InputDispatcher.cpp revision dc5992e48ca88d882313d206f8174efcc5e01455
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2010 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 569a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * you may not use this file except in compliance with the License. 669a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * You may obtain a copy of the License at 769a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 969a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 1169a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 1269a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1369a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * See the License for the specific language governing permissions and 1469a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define LOG_TAG "InputDispatcher" 18a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn#define ATRACE_TAG ATRACE_TAG_INPUT 19a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project//#define LOG_NDEBUG 0 21a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 22a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn// Log detailed debug messages about each inbound event notification to the dispatcher. 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_INBOUND_EVENT_DETAILS 0 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log detailed debug messages about each outbound event processed by the dispatcher. 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_OUTBOUND_EVENT_DETAILS 0 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log debug messages about the dispatch cycle. 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_DISPATCH_CYCLE 0 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log debug messages about registrations. 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_REGISTRATION 0 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log debug messages about input event injection. 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_INJECTION 0 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log debug messages about input focus tracking. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_FOCUS 0 3969a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log debug messages about the app switch latency optimization. 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define DEBUG_APP_SWITCH 0 42d1945950451220932f70bac83408c761dcba231fMike Lockwood 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project// Log debug messages about hover events. 44d1945950451220932f70bac83408c761dcba231fMike Lockwood#define DEBUG_HOVER 0 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "InputDispatcher.h" 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/Trace.h> 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <cutils/log.h> 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <powermanager/PowerManager.h> 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <ui/Region.h> 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 53d1945950451220932f70bac83408c761dcba231fMike Lockwood#include <stddef.h> 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <unistd.h> 55d1945950451220932f70bac83408c761dcba231fMike Lockwood#include <errno.h> 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <limits.h> 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <time.h> 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define INDENT " " 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define INDENT2 " " 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define INDENT3 " " 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define INDENT4 " " 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectnamespace android { 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 66d1945950451220932f70bac83408c761dcba231fMike Lockwood// Default input dispatching timeout if there is no focused application or paused window 67d1945950451220932f70bac83408c761dcba231fMike Lockwood// from which to determine an appropriate dispatching timeout. 68d1945950451220932f70bac83408c761dcba231fMike Lockwoodconst nsecs_t DEFAULT_INPUT_DISPATCHING_TIMEOUT = 5000 * 1000000LL; // 5 sec 69d1945950451220932f70bac83408c761dcba231fMike Lockwood 70d1945950451220932f70bac83408c761dcba231fMike Lockwood// Amount of time to allow for all pending events to be processed when an app switch 71d1945950451220932f70bac83408c761dcba231fMike Lockwood// key is on the way. This is used to preempt input dispatch and drop input events 7283e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn// when an application takes too long to respond and the user has pressed an app switch key. 73d1945950451220932f70bac83408c761dcba231fMike Lockwoodconst nsecs_t APP_SWITCH_TIMEOUT = 500 * 1000000LL; // 0.5sec 74d1945950451220932f70bac83408c761dcba231fMike Lockwood 75d1945950451220932f70bac83408c761dcba231fMike Lockwood// Amount of time to allow for an event to be dispatched (measured since its eventTime) 7669a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes// before considering it stale and dropping it. 77d1945950451220932f70bac83408c761dcba231fMike Lockwoodconst nsecs_t STALE_EVENT_TIMEOUT = 10000 * 1000000LL; // 10sec 78d1945950451220932f70bac83408c761dcba231fMike Lockwood 79d1945950451220932f70bac83408c761dcba231fMike Lockwood// Amount of time to allow touch events to be streamed out to a connection before requiring 80d1945950451220932f70bac83408c761dcba231fMike Lockwood// that the first event be finished. This value extends the ANR timeout by the specified 81d1945950451220932f70bac83408c761dcba231fMike Lockwood// amount. For example, if streaming is allowed to get ahead by one second relative to the 82d1945950451220932f70bac83408c761dcba231fMike Lockwood// queue of waiting unfinished events, then ANRs will similarly be delayed by one second. 83d1945950451220932f70bac83408c761dcba231fMike Lockwoodconst nsecs_t STREAM_AHEAD_EVENT_TIMEOUT = 500 * 1000000LL; // 0.5sec 8483e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn 8583e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn// Log a warning when an event takes longer than this to process, even if an ANR does not occur. 8683e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackbornconst nsecs_t SLOW_EVENT_PROCESSING_WARNING_TIMEOUT = 2000 * 1000000LL; // 2sec 8783e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn 88d1945950451220932f70bac83408c761dcba231fMike Lockwood// Number of recent events to keep for debugging purposes. 89d1945950451220932f70bac83408c761dcba231fMike Lockwoodconst size_t RECENT_QUEUE_MAX_SIZE = 10; 90d1945950451220932f70bac83408c761dcba231fMike Lockwood 91d1945950451220932f70bac83408c761dcba231fMike Lockwoodstatic inline nsecs_t now() { 92d1945950451220932f70bac83408c761dcba231fMike Lockwood return systemTime(SYSTEM_TIME_MONOTONIC); 93d1945950451220932f70bac83408c761dcba231fMike Lockwood} 94d1945950451220932f70bac83408c761dcba231fMike Lockwood 95d1945950451220932f70bac83408c761dcba231fMike Lockwoodstatic inline const char* toString(bool value) { 96d1945950451220932f70bac83408c761dcba231fMike Lockwood return value ? "true" : "false"; 97d1945950451220932f70bac83408c761dcba231fMike Lockwood} 98d1945950451220932f70bac83408c761dcba231fMike Lockwood 99d1945950451220932f70bac83408c761dcba231fMike Lockwoodstatic inline int32_t getMotionEventActionPointerIndex(int32_t action) { 100d1945950451220932f70bac83408c761dcba231fMike Lockwood return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) 101d1945950451220932f70bac83408c761dcba231fMike Lockwood >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT; 10283e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn} 103d1945950451220932f70bac83408c761dcba231fMike Lockwood 104d1945950451220932f70bac83408c761dcba231fMike Lockwoodstatic bool isValidKeyAction(int32_t action) { 105d1945950451220932f70bac83408c761dcba231fMike Lockwood switch (action) { 10669a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes case AKEY_EVENT_ACTION_DOWN: 107d1945950451220932f70bac83408c761dcba231fMike Lockwood case AKEY_EVENT_ACTION_UP: 108d1945950451220932f70bac83408c761dcba231fMike Lockwood return true; 109d1945950451220932f70bac83408c761dcba231fMike Lockwood default: 110d1945950451220932f70bac83408c761dcba231fMike Lockwood return false; 111d1945950451220932f70bac83408c761dcba231fMike Lockwood } 112d1945950451220932f70bac83408c761dcba231fMike Lockwood} 113d1945950451220932f70bac83408c761dcba231fMike Lockwood 11483e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackbornstatic bool validateKeyEvent(int32_t action) { 11583e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn if (! isValidKeyAction(action)) { 11683e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn ALOGE("Key event has invalid action code 0x%x", action); 11783e6eb11d7ec24e7c363beccab0806989ad89ec5Dianne Hackborn return false; 118d1945950451220932f70bac83408c761dcba231fMike Lockwood } 119d1945950451220932f70bac83408c761dcba231fMike Lockwood return true; 120d1945950451220932f70bac83408c761dcba231fMike Lockwood} 121d1945950451220932f70bac83408c761dcba231fMike Lockwood 122d1945950451220932f70bac83408c761dcba231fMike Lockwoodstatic bool isValidMotionAction(int32_t action, size_t pointerCount) { 123d1945950451220932f70bac83408c761dcba231fMike Lockwood switch (action & AMOTION_EVENT_ACTION_MASK) { 124d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_DOWN: 125d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_UP: 126d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_CANCEL: 127d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_MOVE: 128d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_OUTSIDE: 129d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_HOVER_ENTER: 130d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_HOVER_MOVE: 131d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_HOVER_EXIT: 132d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_SCROLL: 133d1945950451220932f70bac83408c761dcba231fMike Lockwood return true; 134d1945950451220932f70bac83408c761dcba231fMike Lockwood case AMOTION_EVENT_ACTION_POINTER_DOWN: 13569a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes case AMOTION_EVENT_ACTION_POINTER_UP: { 136d1945950451220932f70bac83408c761dcba231fMike Lockwood int32_t index = getMotionEventActionPointerIndex(action); 137d1945950451220932f70bac83408c761dcba231fMike Lockwood return index >= 0 && size_t(index) < pointerCount; 138d1945950451220932f70bac83408c761dcba231fMike Lockwood } 139d1945950451220932f70bac83408c761dcba231fMike Lockwood default: 140d1945950451220932f70bac83408c761dcba231fMike Lockwood return false; 141d1945950451220932f70bac83408c761dcba231fMike Lockwood } 142d1945950451220932f70bac83408c761dcba231fMike Lockwood} 143d1945950451220932f70bac83408c761dcba231fMike Lockwood 144d1945950451220932f70bac83408c761dcba231fMike Lockwoodstatic bool validateMotionEvent(int32_t action, size_t pointerCount, 145d1945950451220932f70bac83408c761dcba231fMike Lockwood const PointerProperties* pointerProperties) { 146d1945950451220932f70bac83408c761dcba231fMike Lockwood if (! isValidMotionAction(action, pointerCount)) { 147d1945950451220932f70bac83408c761dcba231fMike Lockwood ALOGE("Motion event has invalid action code 0x%x", action); 148d1945950451220932f70bac83408c761dcba231fMike Lockwood return false; 149d1945950451220932f70bac83408c761dcba231fMike Lockwood } 150d1945950451220932f70bac83408c761dcba231fMike Lockwood if (pointerCount < 1 || pointerCount > MAX_POINTERS) { 151d1945950451220932f70bac83408c761dcba231fMike Lockwood ALOGE("Motion event has invalid pointer count %zu; value must be between 1 and %d.", 152d1945950451220932f70bac83408c761dcba231fMike Lockwood pointerCount, MAX_POINTERS); 153d1945950451220932f70bac83408c761dcba231fMike Lockwood return false; 154d1945950451220932f70bac83408c761dcba231fMike Lockwood } 155d1945950451220932f70bac83408c761dcba231fMike Lockwood BitSet32 pointerIdBits; 156d1945950451220932f70bac83408c761dcba231fMike Lockwood for (size_t i = 0; i < pointerCount; i++) { 157d1945950451220932f70bac83408c761dcba231fMike Lockwood int32_t id = pointerProperties[i].id; 158d1945950451220932f70bac83408c761dcba231fMike Lockwood if (id < 0 || id > MAX_POINTER_ID) { 159d1945950451220932f70bac83408c761dcba231fMike Lockwood ALOGE("Motion event has invalid pointer id %d; value must be between 0 and %d", 160d1945950451220932f70bac83408c761dcba231fMike Lockwood id, MAX_POINTER_ID); 161d1945950451220932f70bac83408c761dcba231fMike Lockwood return false; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (pointerIdBits.hasBit(id)) { 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ALOGE("Motion event has duplicate pointer id %d", id); 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pointerIdBits.markBit(id); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 17069a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes} 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic bool isMainDisplay(int32_t displayId) { 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return displayId == ADISPLAY_ID_DEFAULT || displayId == ADISPLAY_ID_NONE; 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic void dumpRegion(String8& dump, const Region& region) { 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (region.isEmpty()) { 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dump.append("<empty>"); 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 18006f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick } 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18206f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick bool first = true; 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Region::const_iterator cur = region.begin(); 18406f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick Region::const_iterator const tail = region.end(); 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (cur != tail) { 18606f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick if (first) { 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project first = false; 18806f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick } else { 18906f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick dump.append("|"); 19006f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick } 19106f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick dump.appendFormat("[%d,%d][%d,%d]", cur->left, cur->top, cur->right, cur->bottom); 19206f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick cur++; 19306f367437c88f0960ea093c99388a16d0292121dBrad Fitzpatrick } 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 195a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 196a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 197a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn// --- InputDispatcher --- 198a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 199a53de0629f3b94472c0f160f5bbe1090b020feabDianne HackbornInputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) : 200a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mPolicy(policy), 201a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX), 202a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mNextUnblockedEvent(NULL), 203a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mDispatchEnabled(false), mDispatchFrozen(false), mInputFilterEnabled(false), 204a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) { 205a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mLooper = new Looper(false); 206a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 207a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn mKeyRepeatState.lastKeyEntry = NULL; 208a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 209a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn policy->getDispatcherConfiguration(&mConfig); 210a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn} 211a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 212a53de0629f3b94472c0f160f5bbe1090b020feabDianne HackbornInputDispatcher::~InputDispatcher() { 213a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn { // acquire lock 214a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn AutoMutex _l(mLock); 215a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 216a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn resetKeyRepeatLocked(); 217a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn releasePendingEventLocked(); 218a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn drainInboundQueueLocked(); 219a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn } 220a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 221a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn while (mConnectionsByFd.size() != 0) { 222a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn unregisterInputChannel(mConnectionsByFd.valueAt(0)->inputChannel); 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectvoid InputDispatcher::dispatchOnce() { 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nsecs_t nextWakeupTime = LONG_LONG_MAX; 228d1945950451220932f70bac83408c761dcba231fMike Lockwood { // acquire lock 229d1945950451220932f70bac83408c761dcba231fMike Lockwood AutoMutex _l(mLock); 230d1945950451220932f70bac83408c761dcba231fMike Lockwood mDispatcherIsAliveCondition.broadcast(); 231d1945950451220932f70bac83408c761dcba231fMike Lockwood 232d1945950451220932f70bac83408c761dcba231fMike Lockwood // Run a dispatch loop if there are no pending commands. 233d1945950451220932f70bac83408c761dcba231fMike Lockwood // The dispatch loop might enqueue commands to run afterwards. 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!haveCommandsLocked()) { 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dispatchOnceInnerLocked(&nextWakeupTime); 236a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn } 237a53de0629f3b94472c0f160f5bbe1090b020feabDianne Hackborn 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Run all pending commands if there are any. 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If any commands were run then force the next poll to wake up immediately. 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (runCommandsLockedInterruptible()) { 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextWakeupTime = LONG_LONG_MIN; 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } // release lock 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Wait for callback or timeout or wake. (make sure we round up, not down) 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nsecs_t currentTime = now(); 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int timeoutMillis = toMillisecondTimeoutDelay(currentTime, nextWakeupTime); 248 mLooper->pollOnce(timeoutMillis); 249} 250 251void InputDispatcher::dispatchOnceInnerLocked(nsecs_t* nextWakeupTime) { 252 nsecs_t currentTime = now(); 253 254 // Reset the key repeat timer whenever normal dispatch is suspended while the 255 // device is in a non-interactive state. This is to ensure that we abort a key 256 // repeat if the device is just coming out of sleep. 257 if (!mDispatchEnabled) { 258 resetKeyRepeatLocked(); 259 } 260 261 // If dispatching is frozen, do not process timeouts or try to deliver any new events. 262 if (mDispatchFrozen) { 263#if DEBUG_FOCUS 264 ALOGD("Dispatch frozen. Waiting some more."); 265#endif 266 return; 267 } 268 269 // Optimize latency of app switches. 270 // Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has 271 // been pressed. When it expires, we preempt dispatch and drop all other pending events. 272 bool isAppSwitchDue = mAppSwitchDueTime <= currentTime; 273 if (mAppSwitchDueTime < *nextWakeupTime) { 274 *nextWakeupTime = mAppSwitchDueTime; 275 } 276 277 // Ready to start a new event. 278 // If we don't already have a pending event, go grab one. 279 if (! mPendingEvent) { 280 if (mInboundQueue.isEmpty()) { 281 if (isAppSwitchDue) { 282 // The inbound queue is empty so the app switch key we were waiting 283 // for will never arrive. Stop waiting for it. 284 resetPendingAppSwitchLocked(false); 285 isAppSwitchDue = false; 286 } 287 288 // Synthesize a key repeat if appropriate. 289 if (mKeyRepeatState.lastKeyEntry) { 290 if (currentTime >= mKeyRepeatState.nextRepeatTime) { 291 mPendingEvent = synthesizeKeyRepeatLocked(currentTime); 292 } else { 293 if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) { 294 *nextWakeupTime = mKeyRepeatState.nextRepeatTime; 295 } 296 } 297 } 298 299 // Nothing to do if there is no pending event. 300 if (!mPendingEvent) { 301 return; 302 } 303 } else { 304 // Inbound queue has at least one entry. 305 mPendingEvent = mInboundQueue.dequeueAtHead(); 306 traceInboundQueueLengthLocked(); 307 } 308 309 // Poke user activity for this event. 310 if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) { 311 pokeUserActivityLocked(mPendingEvent); 312 } 313 314 // Get ready to dispatch the event. 315 resetANRTimeoutsLocked(); 316 } 317 318 // Now we have an event to dispatch. 319 // All events are eventually dequeued and processed this way, even if we intend to drop them. 320 ALOG_ASSERT(mPendingEvent != NULL); 321 bool done = false; 322 DropReason dropReason = DROP_REASON_NOT_DROPPED; 323 if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) { 324 dropReason = DROP_REASON_POLICY; 325 } else if (!mDispatchEnabled) { 326 dropReason = DROP_REASON_DISABLED; 327 } 328 329 if (mNextUnblockedEvent == mPendingEvent) { 330 mNextUnblockedEvent = NULL; 331 } 332 333 switch (mPendingEvent->type) { 334 case EventEntry::TYPE_CONFIGURATION_CHANGED: { 335 ConfigurationChangedEntry* typedEntry = 336 static_cast<ConfigurationChangedEntry*>(mPendingEvent); 337 done = dispatchConfigurationChangedLocked(currentTime, typedEntry); 338 dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped 339 break; 340 } 341 342 case EventEntry::TYPE_DEVICE_RESET: { 343 DeviceResetEntry* typedEntry = 344 static_cast<DeviceResetEntry*>(mPendingEvent); 345 done = dispatchDeviceResetLocked(currentTime, typedEntry); 346 dropReason = DROP_REASON_NOT_DROPPED; // device resets are never dropped 347 break; 348 } 349 350 case EventEntry::TYPE_KEY: { 351 KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent); 352 if (isAppSwitchDue) { 353 if (isAppSwitchKeyEventLocked(typedEntry)) { 354 resetPendingAppSwitchLocked(true); 355 isAppSwitchDue = false; 356 } else if (dropReason == DROP_REASON_NOT_DROPPED) { 357 dropReason = DROP_REASON_APP_SWITCH; 358 } 359 } 360 if (dropReason == DROP_REASON_NOT_DROPPED 361 && isStaleEventLocked(currentTime, typedEntry)) { 362 dropReason = DROP_REASON_STALE; 363 } 364 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 365 dropReason = DROP_REASON_BLOCKED; 366 } 367 done = dispatchKeyLocked(currentTime, typedEntry, &dropReason, nextWakeupTime); 368 break; 369 } 370 371 case EventEntry::TYPE_MOTION: { 372 MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent); 373 if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) { 374 dropReason = DROP_REASON_APP_SWITCH; 375 } 376 if (dropReason == DROP_REASON_NOT_DROPPED 377 && isStaleEventLocked(currentTime, typedEntry)) { 378 dropReason = DROP_REASON_STALE; 379 } 380 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 381 dropReason = DROP_REASON_BLOCKED; 382 } 383 done = dispatchMotionLocked(currentTime, typedEntry, 384 &dropReason, nextWakeupTime); 385 break; 386 } 387 388 default: 389 ALOG_ASSERT(false); 390 break; 391 } 392 393 if (done) { 394 if (dropReason != DROP_REASON_NOT_DROPPED) { 395 dropInboundEventLocked(mPendingEvent, dropReason); 396 } 397 398 releasePendingEventLocked(); 399 *nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 400 } 401} 402 403bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) { 404 bool needWake = mInboundQueue.isEmpty(); 405 mInboundQueue.enqueueAtTail(entry); 406 traceInboundQueueLengthLocked(); 407 408 switch (entry->type) { 409 case EventEntry::TYPE_KEY: { 410 // Optimize app switch latency. 411 // If the application takes too long to catch up then we drop all events preceding 412 // the app switch key. 413 KeyEntry* keyEntry = static_cast<KeyEntry*>(entry); 414 if (isAppSwitchKeyEventLocked(keyEntry)) { 415 if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) { 416 mAppSwitchSawKeyDown = true; 417 } else if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 418 if (mAppSwitchSawKeyDown) { 419#if DEBUG_APP_SWITCH 420 ALOGD("App switch is pending!"); 421#endif 422 mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT; 423 mAppSwitchSawKeyDown = false; 424 needWake = true; 425 } 426 } 427 } 428 break; 429 } 430 431 case EventEntry::TYPE_MOTION: { 432 // Optimize case where the current application is unresponsive and the user 433 // decides to touch a window in a different application. 434 // If the application takes too long to catch up then we drop all events preceding 435 // the touch into the other window. 436 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 437 if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN 438 && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) 439 && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY 440 && mInputTargetWaitApplicationHandle != NULL) { 441 int32_t displayId = motionEntry->displayId; 442 int32_t x = int32_t(motionEntry->pointerCoords[0]. 443 getAxisValue(AMOTION_EVENT_AXIS_X)); 444 int32_t y = int32_t(motionEntry->pointerCoords[0]. 445 getAxisValue(AMOTION_EVENT_AXIS_Y)); 446 sp<InputWindowHandle> touchedWindowHandle = findTouchedWindowAtLocked(displayId, x, y); 447 if (touchedWindowHandle != NULL 448 && touchedWindowHandle->inputApplicationHandle 449 != mInputTargetWaitApplicationHandle) { 450 // User touched a different application than the one we are waiting on. 451 // Flag the event, and start pruning the input queue. 452 mNextUnblockedEvent = motionEntry; 453 needWake = true; 454 } 455 } 456 break; 457 } 458 } 459 460 return needWake; 461} 462 463void InputDispatcher::addRecentEventLocked(EventEntry* entry) { 464 entry->refCount += 1; 465 mRecentQueue.enqueueAtTail(entry); 466 if (mRecentQueue.count() > RECENT_QUEUE_MAX_SIZE) { 467 mRecentQueue.dequeueAtHead()->release(); 468 } 469} 470 471sp<InputWindowHandle> InputDispatcher::findTouchedWindowAtLocked(int32_t displayId, 472 int32_t x, int32_t y) { 473 // Traverse windows from front to back to find touched window. 474 size_t numWindows = mWindowHandles.size(); 475 for (size_t i = 0; i < numWindows; i++) { 476 sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i); 477 const InputWindowInfo* windowInfo = windowHandle->getInfo(); 478 if (windowInfo->displayId == displayId) { 479 int32_t flags = windowInfo->layoutParamsFlags; 480 int32_t privateFlags = windowInfo->layoutParamsPrivateFlags; 481 482 if (windowInfo->visible) { 483 if (!(flags & InputWindowInfo::FLAG_NOT_TOUCHABLE)) { 484 bool isTouchModal = (flags & (InputWindowInfo::FLAG_NOT_FOCUSABLE 485 | InputWindowInfo::FLAG_NOT_TOUCH_MODAL)) == 0; 486 if (isTouchModal || windowInfo->touchableRegionContainsPoint(x, y)) { 487 // Found window. 488 return windowHandle; 489 } 490 } 491 } 492 493 if (privateFlags & InputWindowInfo::PRIVATE_FLAG_SYSTEM_ERROR) { 494 // Error window is on top but not visible, so touch is dropped. 495 return NULL; 496 } 497 } 498 } 499 return NULL; 500} 501 502void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) { 503 const char* reason; 504 switch (dropReason) { 505 case DROP_REASON_POLICY: 506#if DEBUG_INBOUND_EVENT_DETAILS 507 ALOGD("Dropped event because policy consumed it."); 508#endif 509 reason = "inbound event was dropped because the policy consumed it"; 510 break; 511 case DROP_REASON_DISABLED: 512 ALOGI("Dropped event because input dispatch is disabled."); 513 reason = "inbound event was dropped because input dispatch is disabled"; 514 break; 515 case DROP_REASON_APP_SWITCH: 516 ALOGI("Dropped event because of pending overdue app switch."); 517 reason = "inbound event was dropped because of pending overdue app switch"; 518 break; 519 case DROP_REASON_BLOCKED: 520 ALOGI("Dropped event because the current application is not responding and the user " 521 "has started interacting with a different application."); 522 reason = "inbound event was dropped because the current application is not responding " 523 "and the user has started interacting with a different application"; 524 break; 525 case DROP_REASON_STALE: 526 ALOGI("Dropped event because it is stale."); 527 reason = "inbound event was dropped because it is stale"; 528 break; 529 default: 530 ALOG_ASSERT(false); 531 return; 532 } 533 534 switch (entry->type) { 535 case EventEntry::TYPE_KEY: { 536 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason); 537 synthesizeCancelationEventsForAllConnectionsLocked(options); 538 break; 539 } 540 case EventEntry::TYPE_MOTION: { 541 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 542 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 543 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, reason); 544 synthesizeCancelationEventsForAllConnectionsLocked(options); 545 } else { 546 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason); 547 synthesizeCancelationEventsForAllConnectionsLocked(options); 548 } 549 break; 550 } 551 } 552} 553 554bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) { 555 return keyCode == AKEYCODE_HOME 556 || keyCode == AKEYCODE_ENDCALL 557 || keyCode == AKEYCODE_APP_SWITCH; 558} 559 560bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) { 561 return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) 562 && isAppSwitchKeyCode(keyEntry->keyCode) 563 && (keyEntry->policyFlags & POLICY_FLAG_TRUSTED) 564 && (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER); 565} 566 567bool InputDispatcher::isAppSwitchPendingLocked() { 568 return mAppSwitchDueTime != LONG_LONG_MAX; 569} 570 571void InputDispatcher::resetPendingAppSwitchLocked(bool handled) { 572 mAppSwitchDueTime = LONG_LONG_MAX; 573 574#if DEBUG_APP_SWITCH 575 if (handled) { 576 ALOGD("App switch has arrived."); 577 } else { 578 ALOGD("App switch was abandoned."); 579 } 580#endif 581} 582 583bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) { 584 return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT; 585} 586 587bool InputDispatcher::haveCommandsLocked() const { 588 return !mCommandQueue.isEmpty(); 589} 590 591bool InputDispatcher::runCommandsLockedInterruptible() { 592 if (mCommandQueue.isEmpty()) { 593 return false; 594 } 595 596 do { 597 CommandEntry* commandEntry = mCommandQueue.dequeueAtHead(); 598 599 Command command = commandEntry->command; 600 (this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible' 601 602 commandEntry->connection.clear(); 603 delete commandEntry; 604 } while (! mCommandQueue.isEmpty()); 605 return true; 606} 607 608InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) { 609 CommandEntry* commandEntry = new CommandEntry(command); 610 mCommandQueue.enqueueAtTail(commandEntry); 611 return commandEntry; 612} 613 614void InputDispatcher::drainInboundQueueLocked() { 615 while (! mInboundQueue.isEmpty()) { 616 EventEntry* entry = mInboundQueue.dequeueAtHead(); 617 releaseInboundEventLocked(entry); 618 } 619 traceInboundQueueLengthLocked(); 620} 621 622void InputDispatcher::releasePendingEventLocked() { 623 if (mPendingEvent) { 624 resetANRTimeoutsLocked(); 625 releaseInboundEventLocked(mPendingEvent); 626 mPendingEvent = NULL; 627 } 628} 629 630void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) { 631 InjectionState* injectionState = entry->injectionState; 632 if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) { 633#if DEBUG_DISPATCH_CYCLE 634 ALOGD("Injected inbound event was dropped."); 635#endif 636 setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED); 637 } 638 if (entry == mNextUnblockedEvent) { 639 mNextUnblockedEvent = NULL; 640 } 641 addRecentEventLocked(entry); 642 entry->release(); 643} 644 645void InputDispatcher::resetKeyRepeatLocked() { 646 if (mKeyRepeatState.lastKeyEntry) { 647 mKeyRepeatState.lastKeyEntry->release(); 648 mKeyRepeatState.lastKeyEntry = NULL; 649 } 650} 651 652InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked(nsecs_t currentTime) { 653 KeyEntry* entry = mKeyRepeatState.lastKeyEntry; 654 655 // Reuse the repeated key entry if it is otherwise unreferenced. 656 uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK) 657 | POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED; 658 if (entry->refCount == 1) { 659 entry->recycle(); 660 entry->eventTime = currentTime; 661 entry->policyFlags = policyFlags; 662 entry->repeatCount += 1; 663 } else { 664 KeyEntry* newEntry = new KeyEntry(currentTime, 665 entry->deviceId, entry->source, policyFlags, 666 entry->action, entry->flags, entry->keyCode, entry->scanCode, 667 entry->metaState, entry->repeatCount + 1, entry->downTime); 668 669 mKeyRepeatState.lastKeyEntry = newEntry; 670 entry->release(); 671 672 entry = newEntry; 673 } 674 entry->syntheticRepeat = true; 675 676 // Increment reference count since we keep a reference to the event in 677 // mKeyRepeatState.lastKeyEntry in addition to the one we return. 678 entry->refCount += 1; 679 680 mKeyRepeatState.nextRepeatTime = currentTime + mConfig.keyRepeatDelay; 681 return entry; 682} 683 684bool InputDispatcher::dispatchConfigurationChangedLocked( 685 nsecs_t currentTime, ConfigurationChangedEntry* entry) { 686#if DEBUG_OUTBOUND_EVENT_DETAILS 687 ALOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime); 688#endif 689 690 // Reset key repeating in case a keyboard device was added or removed or something. 691 resetKeyRepeatLocked(); 692 693 // Enqueue a command to run outside the lock to tell the policy that the configuration changed. 694 CommandEntry* commandEntry = postCommandLocked( 695 & InputDispatcher::doNotifyConfigurationChangedInterruptible); 696 commandEntry->eventTime = entry->eventTime; 697 return true; 698} 699 700bool InputDispatcher::dispatchDeviceResetLocked( 701 nsecs_t currentTime, DeviceResetEntry* entry) { 702#if DEBUG_OUTBOUND_EVENT_DETAILS 703 ALOGD("dispatchDeviceReset - eventTime=%lld, deviceId=%d", entry->eventTime, entry->deviceId); 704#endif 705 706 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, 707 "device was reset"); 708 options.deviceId = entry->deviceId; 709 synthesizeCancelationEventsForAllConnectionsLocked(options); 710 return true; 711} 712 713bool InputDispatcher::dispatchKeyLocked(nsecs_t currentTime, KeyEntry* entry, 714 DropReason* dropReason, nsecs_t* nextWakeupTime) { 715 // Preprocessing. 716 if (! entry->dispatchInProgress) { 717 if (entry->repeatCount == 0 718 && entry->action == AKEY_EVENT_ACTION_DOWN 719 && (entry->policyFlags & POLICY_FLAG_TRUSTED) 720 && (!(entry->policyFlags & POLICY_FLAG_DISABLE_KEY_REPEAT))) { 721 if (mKeyRepeatState.lastKeyEntry 722 && mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) { 723 // We have seen two identical key downs in a row which indicates that the device 724 // driver is automatically generating key repeats itself. We take note of the 725 // repeat here, but we disable our own next key repeat timer since it is clear that 726 // we will not need to synthesize key repeats ourselves. 727 entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1; 728 resetKeyRepeatLocked(); 729 mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves 730 } else { 731 // Not a repeat. Save key down state in case we do see a repeat later. 732 resetKeyRepeatLocked(); 733 mKeyRepeatState.nextRepeatTime = entry->eventTime + mConfig.keyRepeatTimeout; 734 } 735 mKeyRepeatState.lastKeyEntry = entry; 736 entry->refCount += 1; 737 } else if (! entry->syntheticRepeat) { 738 resetKeyRepeatLocked(); 739 } 740 741 if (entry->repeatCount == 1) { 742 entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS; 743 } else { 744 entry->flags &= ~AKEY_EVENT_FLAG_LONG_PRESS; 745 } 746 747 entry->dispatchInProgress = true; 748 749 logOutboundKeyDetailsLocked("dispatchKey - ", entry); 750 } 751 752 // Handle case where the policy asked us to try again later last time. 753 if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER) { 754 if (currentTime < entry->interceptKeyWakeupTime) { 755 if (entry->interceptKeyWakeupTime < *nextWakeupTime) { 756 *nextWakeupTime = entry->interceptKeyWakeupTime; 757 } 758 return false; // wait until next wakeup 759 } 760 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 761 entry->interceptKeyWakeupTime = 0; 762 } 763 764 // Give the policy a chance to intercept the key. 765 if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN) { 766 if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) { 767 CommandEntry* commandEntry = postCommandLocked( 768 & InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible); 769 if (mFocusedWindowHandle != NULL) { 770 commandEntry->inputWindowHandle = mFocusedWindowHandle; 771 } 772 commandEntry->keyEntry = entry; 773 entry->refCount += 1; 774 return false; // wait for the command to run 775 } else { 776 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 777 } 778 } else if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_SKIP) { 779 if (*dropReason == DROP_REASON_NOT_DROPPED) { 780 *dropReason = DROP_REASON_POLICY; 781 } 782 } 783 784 // Clean up if dropping the event. 785 if (*dropReason != DROP_REASON_NOT_DROPPED) { 786 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 787 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 788 return true; 789 } 790 791 // Identify targets. 792 Vector<InputTarget> inputTargets; 793 int32_t injectionResult = findFocusedWindowTargetsLocked(currentTime, 794 entry, inputTargets, nextWakeupTime); 795 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 796 return false; 797 } 798 799 setInjectionResultLocked(entry, injectionResult); 800 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 801 return true; 802 } 803 804 addMonitoringTargetsLocked(inputTargets); 805 806 // Dispatch the key. 807 dispatchEventLocked(currentTime, entry, inputTargets); 808 return true; 809} 810 811void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) { 812#if DEBUG_OUTBOUND_EVENT_DETAILS 813 ALOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 814 "action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, " 815 "repeatCount=%d, downTime=%lld", 816 prefix, 817 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 818 entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState, 819 entry->repeatCount, entry->downTime); 820#endif 821} 822 823bool InputDispatcher::dispatchMotionLocked( 824 nsecs_t currentTime, MotionEntry* entry, DropReason* dropReason, nsecs_t* nextWakeupTime) { 825 // Preprocessing. 826 if (! entry->dispatchInProgress) { 827 entry->dispatchInProgress = true; 828 829 logOutboundMotionDetailsLocked("dispatchMotion - ", entry); 830 } 831 832 // Clean up if dropping the event. 833 if (*dropReason != DROP_REASON_NOT_DROPPED) { 834 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 835 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 836 return true; 837 } 838 839 bool isPointerEvent = entry->source & AINPUT_SOURCE_CLASS_POINTER; 840 841 // Identify targets. 842 Vector<InputTarget> inputTargets; 843 844 bool conflictingPointerActions = false; 845 int32_t injectionResult; 846 if (isPointerEvent) { 847 // Pointer event. (eg. touchscreen) 848 injectionResult = findTouchedWindowTargetsLocked(currentTime, 849 entry, inputTargets, nextWakeupTime, &conflictingPointerActions); 850 } else { 851 // Non touch event. (eg. trackball) 852 injectionResult = findFocusedWindowTargetsLocked(currentTime, 853 entry, inputTargets, nextWakeupTime); 854 } 855 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 856 return false; 857 } 858 859 setInjectionResultLocked(entry, injectionResult); 860 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 861 return true; 862 } 863 864 // TODO: support sending secondary display events to input monitors 865 if (isMainDisplay(entry->displayId)) { 866 addMonitoringTargetsLocked(inputTargets); 867 } 868 869 // Dispatch the motion. 870 if (conflictingPointerActions) { 871 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 872 "conflicting pointer actions"); 873 synthesizeCancelationEventsForAllConnectionsLocked(options); 874 } 875 dispatchEventLocked(currentTime, entry, inputTargets); 876 return true; 877} 878 879 880void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) { 881#if DEBUG_OUTBOUND_EVENT_DETAILS 882 ALOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 883 "action=0x%x, flags=0x%x, " 884 "metaState=0x%x, buttonState=0x%x, " 885 "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld", 886 prefix, 887 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 888 entry->action, entry->flags, 889 entry->metaState, entry->buttonState, 890 entry->edgeFlags, entry->xPrecision, entry->yPrecision, 891 entry->downTime); 892 893 for (uint32_t i = 0; i < entry->pointerCount; i++) { 894 ALOGD(" Pointer %d: id=%d, toolType=%d, " 895 "x=%f, y=%f, pressure=%f, size=%f, " 896 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 897 "orientation=%f", 898 i, entry->pointerProperties[i].id, 899 entry->pointerProperties[i].toolType, 900 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 901 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 902 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 903 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 904 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 905 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 906 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 907 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 908 entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 909 } 910#endif 911} 912 913void InputDispatcher::dispatchEventLocked(nsecs_t currentTime, 914 EventEntry* eventEntry, const Vector<InputTarget>& inputTargets) { 915#if DEBUG_DISPATCH_CYCLE 916 ALOGD("dispatchEventToCurrentInputTargets"); 917#endif 918 919 ALOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true 920 921 pokeUserActivityLocked(eventEntry); 922 923 for (size_t i = 0; i < inputTargets.size(); i++) { 924 const InputTarget& inputTarget = inputTargets.itemAt(i); 925 926 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 927 if (connectionIndex >= 0) { 928 sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex); 929 prepareDispatchCycleLocked(currentTime, connection, eventEntry, &inputTarget); 930 } else { 931#if DEBUG_FOCUS 932 ALOGD("Dropping event delivery to target with channel '%s' because it " 933 "is no longer registered with the input dispatcher.", 934 inputTarget.inputChannel->getName().string()); 935#endif 936 } 937 } 938} 939 940int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime, 941 const EventEntry* entry, 942 const sp<InputApplicationHandle>& applicationHandle, 943 const sp<InputWindowHandle>& windowHandle, 944 nsecs_t* nextWakeupTime, const char* reason) { 945 if (applicationHandle == NULL && windowHandle == NULL) { 946 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) { 947#if DEBUG_FOCUS 948 ALOGD("Waiting for system to become ready for input. Reason: %s", reason); 949#endif 950 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY; 951 mInputTargetWaitStartTime = currentTime; 952 mInputTargetWaitTimeoutTime = LONG_LONG_MAX; 953 mInputTargetWaitTimeoutExpired = false; 954 mInputTargetWaitApplicationHandle.clear(); 955 } 956 } else { 957 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 958#if DEBUG_FOCUS 959 ALOGD("Waiting for application to become ready for input: %s. Reason: %s", 960 getApplicationWindowLabelLocked(applicationHandle, windowHandle).string(), 961 reason); 962#endif 963 nsecs_t timeout; 964 if (windowHandle != NULL) { 965 timeout = windowHandle->getDispatchingTimeout(DEFAULT_INPUT_DISPATCHING_TIMEOUT); 966 } else if (applicationHandle != NULL) { 967 timeout = applicationHandle->getDispatchingTimeout( 968 DEFAULT_INPUT_DISPATCHING_TIMEOUT); 969 } else { 970 timeout = DEFAULT_INPUT_DISPATCHING_TIMEOUT; 971 } 972 973 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY; 974 mInputTargetWaitStartTime = currentTime; 975 mInputTargetWaitTimeoutTime = currentTime + timeout; 976 mInputTargetWaitTimeoutExpired = false; 977 mInputTargetWaitApplicationHandle.clear(); 978 979 if (windowHandle != NULL) { 980 mInputTargetWaitApplicationHandle = windowHandle->inputApplicationHandle; 981 } 982 if (mInputTargetWaitApplicationHandle == NULL && applicationHandle != NULL) { 983 mInputTargetWaitApplicationHandle = applicationHandle; 984 } 985 } 986 } 987 988 if (mInputTargetWaitTimeoutExpired) { 989 return INPUT_EVENT_INJECTION_TIMED_OUT; 990 } 991 992 if (currentTime >= mInputTargetWaitTimeoutTime) { 993 onANRLocked(currentTime, applicationHandle, windowHandle, 994 entry->eventTime, mInputTargetWaitStartTime, reason); 995 996 // Force poll loop to wake up immediately on next iteration once we get the 997 // ANR response back from the policy. 998 *nextWakeupTime = LONG_LONG_MIN; 999 return INPUT_EVENT_INJECTION_PENDING; 1000 } else { 1001 // Force poll loop to wake up when timeout is due. 1002 if (mInputTargetWaitTimeoutTime < *nextWakeupTime) { 1003 *nextWakeupTime = mInputTargetWaitTimeoutTime; 1004 } 1005 return INPUT_EVENT_INJECTION_PENDING; 1006 } 1007} 1008 1009void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout, 1010 const sp<InputChannel>& inputChannel) { 1011 if (newTimeout > 0) { 1012 // Extend the timeout. 1013 mInputTargetWaitTimeoutTime = now() + newTimeout; 1014 } else { 1015 // Give up. 1016 mInputTargetWaitTimeoutExpired = true; 1017 1018 // Input state will not be realistic. Mark it out of sync. 1019 if (inputChannel.get()) { 1020 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 1021 if (connectionIndex >= 0) { 1022 sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex); 1023 sp<InputWindowHandle> windowHandle = connection->inputWindowHandle; 1024 1025 if (windowHandle != NULL) { 1026 const InputWindowInfo* info = windowHandle->getInfo(); 1027 if (info) { 1028 ssize_t stateIndex = mTouchStatesByDisplay.indexOfKey(info->displayId); 1029 if (stateIndex >= 0) { 1030 mTouchStatesByDisplay.editValueAt(stateIndex).removeWindow( 1031 windowHandle); 1032 } 1033 } 1034 } 1035 1036 if (connection->status == Connection::STATUS_NORMAL) { 1037 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, 1038 "application not responding"); 1039 synthesizeCancelationEventsForConnectionLocked(connection, options); 1040 } 1041 } 1042 } 1043 } 1044} 1045 1046nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked( 1047 nsecs_t currentTime) { 1048 if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1049 return currentTime - mInputTargetWaitStartTime; 1050 } 1051 return 0; 1052} 1053 1054void InputDispatcher::resetANRTimeoutsLocked() { 1055#if DEBUG_FOCUS 1056 ALOGD("Resetting ANR timeouts."); 1057#endif 1058 1059 // Reset input target wait timeout. 1060 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 1061 mInputTargetWaitApplicationHandle.clear(); 1062} 1063 1064int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime, 1065 const EventEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime) { 1066 int32_t injectionResult; 1067 1068 // If there is no currently focused window and no focused application 1069 // then drop the event. 1070 if (mFocusedWindowHandle == NULL) { 1071 if (mFocusedApplicationHandle != NULL) { 1072 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1073 mFocusedApplicationHandle, NULL, nextWakeupTime, 1074 "Waiting because no window has focus but there is a " 1075 "focused application that may eventually add a window " 1076 "when it finishes starting up."); 1077 goto Unresponsive; 1078 } 1079 1080 ALOGI("Dropping event because there is no focused window or focused application."); 1081 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1082 goto Failed; 1083 } 1084 1085 // Check permissions. 1086 if (! checkInjectionPermission(mFocusedWindowHandle, entry->injectionState)) { 1087 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1088 goto Failed; 1089 } 1090 1091 // If the currently focused window is paused then keep waiting. 1092 if (mFocusedWindowHandle->getInfo()->paused) { 1093 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1094 mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime, 1095 "Waiting because the focused window is paused."); 1096 goto Unresponsive; 1097 } 1098 1099 // If the currently focused window is still working on previous events then keep waiting. 1100 if (!isWindowReadyForMoreInputLocked(currentTime, mFocusedWindowHandle, entry)) { 1101 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1102 mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime, 1103 "Waiting because the focused window has not finished " 1104 "processing the input events that were previously delivered to it."); 1105 goto Unresponsive; 1106 } 1107 1108 // Success! Output targets. 1109 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1110 addWindowTargetLocked(mFocusedWindowHandle, 1111 InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS, BitSet32(0), 1112 inputTargets); 1113 1114 // Done. 1115Failed: 1116Unresponsive: 1117 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1118 updateDispatchStatisticsLocked(currentTime, entry, 1119 injectionResult, timeSpentWaitingForApplication); 1120#if DEBUG_FOCUS 1121 ALOGD("findFocusedWindow finished: injectionResult=%d, " 1122 "timeSpentWaitingForApplication=%0.1fms", 1123 injectionResult, timeSpentWaitingForApplication / 1000000.0); 1124#endif 1125 return injectionResult; 1126} 1127 1128int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime, 1129 const MotionEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime, 1130 bool* outConflictingPointerActions) { 1131 enum InjectionPermission { 1132 INJECTION_PERMISSION_UNKNOWN, 1133 INJECTION_PERMISSION_GRANTED, 1134 INJECTION_PERMISSION_DENIED 1135 }; 1136 1137 nsecs_t startTime = now(); 1138 1139 // For security reasons, we defer updating the touch state until we are sure that 1140 // event injection will be allowed. 1141 int32_t displayId = entry->displayId; 1142 int32_t action = entry->action; 1143 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 1144 1145 // Update the touch state as needed based on the properties of the touch event. 1146 int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING; 1147 InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1148 sp<InputWindowHandle> newHoverWindowHandle; 1149 1150 // Copy current touch state into mTempTouchState. 1151 // This state is always reset at the end of this function, so if we don't find state 1152 // for the specified display then our initial state will be empty. 1153 const TouchState* oldState = NULL; 1154 ssize_t oldStateIndex = mTouchStatesByDisplay.indexOfKey(displayId); 1155 if (oldStateIndex >= 0) { 1156 oldState = &mTouchStatesByDisplay.valueAt(oldStateIndex); 1157 mTempTouchState.copyFrom(*oldState); 1158 } 1159 1160 bool isSplit = mTempTouchState.split; 1161 bool switchedDevice = mTempTouchState.deviceId >= 0 && mTempTouchState.displayId >= 0 1162 && (mTempTouchState.deviceId != entry->deviceId 1163 || mTempTouchState.source != entry->source 1164 || mTempTouchState.displayId != displayId); 1165 bool isHoverAction = (maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1166 || maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER 1167 || maskedAction == AMOTION_EVENT_ACTION_HOVER_EXIT); 1168 bool newGesture = (maskedAction == AMOTION_EVENT_ACTION_DOWN 1169 || maskedAction == AMOTION_EVENT_ACTION_SCROLL 1170 || isHoverAction); 1171 bool wrongDevice = false; 1172 if (newGesture) { 1173 bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN; 1174 if (switchedDevice && mTempTouchState.down && !down) { 1175#if DEBUG_FOCUS 1176 ALOGD("Dropping event because a pointer for a different device is already down."); 1177#endif 1178 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1179 switchedDevice = false; 1180 wrongDevice = true; 1181 goto Failed; 1182 } 1183 mTempTouchState.reset(); 1184 mTempTouchState.down = down; 1185 mTempTouchState.deviceId = entry->deviceId; 1186 mTempTouchState.source = entry->source; 1187 mTempTouchState.displayId = displayId; 1188 isSplit = false; 1189 } 1190 1191 if (newGesture || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN)) { 1192 /* Case 1: New splittable pointer going down, or need target for hover or scroll. */ 1193 1194 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1195 int32_t x = int32_t(entry->pointerCoords[pointerIndex]. 1196 getAxisValue(AMOTION_EVENT_AXIS_X)); 1197 int32_t y = int32_t(entry->pointerCoords[pointerIndex]. 1198 getAxisValue(AMOTION_EVENT_AXIS_Y)); 1199 sp<InputWindowHandle> newTouchedWindowHandle; 1200 sp<InputWindowHandle> topErrorWindowHandle; 1201 bool isTouchModal = false; 1202 1203 // Traverse windows from front to back to find touched window and outside targets. 1204 size_t numWindows = mWindowHandles.size(); 1205 for (size_t i = 0; i < numWindows; i++) { 1206 sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i); 1207 const InputWindowInfo* windowInfo = windowHandle->getInfo(); 1208 if (windowInfo->displayId != displayId) { 1209 continue; // wrong display 1210 } 1211 1212 int32_t privateFlags = windowInfo->layoutParamsPrivateFlags; 1213 if (privateFlags & InputWindowInfo::PRIVATE_FLAG_SYSTEM_ERROR) { 1214 if (topErrorWindowHandle == NULL) { 1215 topErrorWindowHandle = windowHandle; 1216 } 1217 } 1218 1219 int32_t flags = windowInfo->layoutParamsFlags; 1220 if (windowInfo->visible) { 1221 if (! (flags & InputWindowInfo::FLAG_NOT_TOUCHABLE)) { 1222 isTouchModal = (flags & (InputWindowInfo::FLAG_NOT_FOCUSABLE 1223 | InputWindowInfo::FLAG_NOT_TOUCH_MODAL)) == 0; 1224 if (isTouchModal || windowInfo->touchableRegionContainsPoint(x, y)) { 1225 newTouchedWindowHandle = windowHandle; 1226 break; // found touched window, exit window loop 1227 } 1228 } 1229 1230 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1231 && (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) { 1232 int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE; 1233 if (isWindowObscuredAtPointLocked(windowHandle, x, y)) { 1234 outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1235 } 1236 1237 mTempTouchState.addOrUpdateWindow( 1238 windowHandle, outsideTargetFlags, BitSet32(0)); 1239 } 1240 } 1241 } 1242 1243 // If there is an error window but it is not taking focus (typically because 1244 // it is invisible) then wait for it. Any other focused window may in 1245 // fact be in ANR state. 1246 if (topErrorWindowHandle != NULL && newTouchedWindowHandle != topErrorWindowHandle) { 1247 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1248 NULL, NULL, nextWakeupTime, 1249 "Waiting because a system error window is about to be displayed."); 1250 injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1251 goto Unresponsive; 1252 } 1253 1254 // Figure out whether splitting will be allowed for this window. 1255 if (newTouchedWindowHandle != NULL 1256 && newTouchedWindowHandle->getInfo()->supportsSplitTouch()) { 1257 // New window supports splitting. 1258 isSplit = true; 1259 } else if (isSplit) { 1260 // New window does not support splitting but we have already split events. 1261 // Ignore the new window. 1262 newTouchedWindowHandle = NULL; 1263 } 1264 1265 // Handle the case where we did not find a window. 1266 if (newTouchedWindowHandle == NULL) { 1267 // Try to assign the pointer to the first foreground window we find, if there is one. 1268 newTouchedWindowHandle = mTempTouchState.getFirstForegroundWindowHandle(); 1269 if (newTouchedWindowHandle == NULL) { 1270 ALOGI("Dropping event because there is no touchable window at (%d, %d).", x, y); 1271 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1272 goto Failed; 1273 } 1274 } 1275 1276 // Set target flags. 1277 int32_t targetFlags = InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS; 1278 if (isSplit) { 1279 targetFlags |= InputTarget::FLAG_SPLIT; 1280 } 1281 if (isWindowObscuredAtPointLocked(newTouchedWindowHandle, x, y)) { 1282 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1283 } 1284 1285 // Update hover state. 1286 if (isHoverAction) { 1287 newHoverWindowHandle = newTouchedWindowHandle; 1288 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1289 newHoverWindowHandle = mLastHoverWindowHandle; 1290 } 1291 1292 // Update the temporary touch state. 1293 BitSet32 pointerIds; 1294 if (isSplit) { 1295 uint32_t pointerId = entry->pointerProperties[pointerIndex].id; 1296 pointerIds.markBit(pointerId); 1297 } 1298 mTempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds); 1299 } else { 1300 /* Case 2: Pointer move, up, cancel or non-splittable pointer down. */ 1301 1302 // If the pointer is not currently down, then ignore the event. 1303 if (! mTempTouchState.down) { 1304#if DEBUG_FOCUS 1305 ALOGD("Dropping event because the pointer is not down or we previously " 1306 "dropped the pointer down event."); 1307#endif 1308 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1309 goto Failed; 1310 } 1311 1312 // Check whether touches should slip outside of the current foreground window. 1313 if (maskedAction == AMOTION_EVENT_ACTION_MOVE 1314 && entry->pointerCount == 1 1315 && mTempTouchState.isSlippery()) { 1316 int32_t x = int32_t(entry->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X)); 1317 int32_t y = int32_t(entry->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y)); 1318 1319 sp<InputWindowHandle> oldTouchedWindowHandle = 1320 mTempTouchState.getFirstForegroundWindowHandle(); 1321 sp<InputWindowHandle> newTouchedWindowHandle = 1322 findTouchedWindowAtLocked(displayId, x, y); 1323 if (oldTouchedWindowHandle != newTouchedWindowHandle 1324 && newTouchedWindowHandle != NULL) { 1325#if DEBUG_FOCUS 1326 ALOGD("Touch is slipping out of window %s into window %s.", 1327 oldTouchedWindowHandle->getName().string(), 1328 newTouchedWindowHandle->getName().string()); 1329#endif 1330 // Make a slippery exit from the old window. 1331 mTempTouchState.addOrUpdateWindow(oldTouchedWindowHandle, 1332 InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT, BitSet32(0)); 1333 1334 // Make a slippery entrance into the new window. 1335 if (newTouchedWindowHandle->getInfo()->supportsSplitTouch()) { 1336 isSplit = true; 1337 } 1338 1339 int32_t targetFlags = InputTarget::FLAG_FOREGROUND 1340 | InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER; 1341 if (isSplit) { 1342 targetFlags |= InputTarget::FLAG_SPLIT; 1343 } 1344 if (isWindowObscuredAtPointLocked(newTouchedWindowHandle, x, y)) { 1345 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1346 } 1347 1348 BitSet32 pointerIds; 1349 if (isSplit) { 1350 pointerIds.markBit(entry->pointerProperties[0].id); 1351 } 1352 mTempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds); 1353 } 1354 } 1355 } 1356 1357 if (newHoverWindowHandle != mLastHoverWindowHandle) { 1358 // Let the previous window know that the hover sequence is over. 1359 if (mLastHoverWindowHandle != NULL) { 1360#if DEBUG_HOVER 1361 ALOGD("Sending hover exit event to window %s.", 1362 mLastHoverWindowHandle->getName().string()); 1363#endif 1364 mTempTouchState.addOrUpdateWindow(mLastHoverWindowHandle, 1365 InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT, BitSet32(0)); 1366 } 1367 1368 // Let the new window know that the hover sequence is starting. 1369 if (newHoverWindowHandle != NULL) { 1370#if DEBUG_HOVER 1371 ALOGD("Sending hover enter event to window %s.", 1372 newHoverWindowHandle->getName().string()); 1373#endif 1374 mTempTouchState.addOrUpdateWindow(newHoverWindowHandle, 1375 InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER, BitSet32(0)); 1376 } 1377 } 1378 1379 // Check permission to inject into all touched foreground windows and ensure there 1380 // is at least one touched foreground window. 1381 { 1382 bool haveForegroundWindow = false; 1383 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1384 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1385 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1386 haveForegroundWindow = true; 1387 if (! checkInjectionPermission(touchedWindow.windowHandle, 1388 entry->injectionState)) { 1389 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1390 injectionPermission = INJECTION_PERMISSION_DENIED; 1391 goto Failed; 1392 } 1393 } 1394 } 1395 if (! haveForegroundWindow) { 1396#if DEBUG_FOCUS 1397 ALOGD("Dropping event because there is no touched foreground window to receive it."); 1398#endif 1399 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1400 goto Failed; 1401 } 1402 1403 // Permission granted to injection into all touched foreground windows. 1404 injectionPermission = INJECTION_PERMISSION_GRANTED; 1405 } 1406 1407 // Check whether windows listening for outside touches are owned by the same UID. If it is 1408 // set the policy flag that we will not reveal coordinate information to this window. 1409 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1410 sp<InputWindowHandle> foregroundWindowHandle = 1411 mTempTouchState.getFirstForegroundWindowHandle(); 1412 const int32_t foregroundWindowUid = foregroundWindowHandle->getInfo()->ownerUid; 1413 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1414 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1415 if (touchedWindow.targetFlags & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) { 1416 sp<InputWindowHandle> inputWindowHandle = touchedWindow.windowHandle; 1417 if (inputWindowHandle->getInfo()->ownerUid != foregroundWindowUid) { 1418 mTempTouchState.addOrUpdateWindow(inputWindowHandle, 1419 InputTarget::FLAG_ZERO_COORDS, BitSet32(0)); 1420 } 1421 } 1422 } 1423 } 1424 1425 // Ensure all touched foreground windows are ready for new input. 1426 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1427 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1428 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1429 // If the touched window is paused then keep waiting. 1430 if (touchedWindow.windowHandle->getInfo()->paused) { 1431 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1432 NULL, touchedWindow.windowHandle, nextWakeupTime, 1433 "Waiting because the touched window is paused."); 1434 goto Unresponsive; 1435 } 1436 1437 // If the touched window is still working on previous events then keep waiting. 1438 if (!isWindowReadyForMoreInputLocked(currentTime, touchedWindow.windowHandle, entry)) { 1439 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1440 NULL, touchedWindow.windowHandle, nextWakeupTime, 1441 "Waiting because the touched window has not finished " 1442 "processing the input events that were previously delivered to it."); 1443 goto Unresponsive; 1444 } 1445 } 1446 } 1447 1448 // If this is the first pointer going down and the touched window has a wallpaper 1449 // then also add the touched wallpaper windows so they are locked in for the duration 1450 // of the touch gesture. 1451 // We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper 1452 // engine only supports touch events. We would need to add a mechanism similar 1453 // to View.onGenericMotionEvent to enable wallpapers to handle these events. 1454 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1455 sp<InputWindowHandle> foregroundWindowHandle = 1456 mTempTouchState.getFirstForegroundWindowHandle(); 1457 if (foregroundWindowHandle->getInfo()->hasWallpaper) { 1458 for (size_t i = 0; i < mWindowHandles.size(); i++) { 1459 sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i); 1460 const InputWindowInfo* info = windowHandle->getInfo(); 1461 if (info->displayId == displayId 1462 && windowHandle->getInfo()->layoutParamsType 1463 == InputWindowInfo::TYPE_WALLPAPER) { 1464 mTempTouchState.addOrUpdateWindow(windowHandle, 1465 InputTarget::FLAG_WINDOW_IS_OBSCURED 1466 | InputTarget::FLAG_DISPATCH_AS_IS, 1467 BitSet32(0)); 1468 } 1469 } 1470 } 1471 } 1472 1473 // Success! Output targets. 1474 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1475 1476 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1477 const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i); 1478 addWindowTargetLocked(touchedWindow.windowHandle, touchedWindow.targetFlags, 1479 touchedWindow.pointerIds, inputTargets); 1480 } 1481 1482 // Drop the outside or hover touch windows since we will not care about them 1483 // in the next iteration. 1484 mTempTouchState.filterNonAsIsTouchWindows(); 1485 1486Failed: 1487 // Check injection permission once and for all. 1488 if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) { 1489 if (checkInjectionPermission(NULL, entry->injectionState)) { 1490 injectionPermission = INJECTION_PERMISSION_GRANTED; 1491 } else { 1492 injectionPermission = INJECTION_PERMISSION_DENIED; 1493 } 1494 } 1495 1496 // Update final pieces of touch state if the injector had permission. 1497 if (injectionPermission == INJECTION_PERMISSION_GRANTED) { 1498 if (!wrongDevice) { 1499 if (switchedDevice) { 1500#if DEBUG_FOCUS 1501 ALOGD("Conflicting pointer actions: Switched to a different device."); 1502#endif 1503 *outConflictingPointerActions = true; 1504 } 1505 1506 if (isHoverAction) { 1507 // Started hovering, therefore no longer down. 1508 if (oldState && oldState->down) { 1509#if DEBUG_FOCUS 1510 ALOGD("Conflicting pointer actions: Hover received while pointer was down."); 1511#endif 1512 *outConflictingPointerActions = true; 1513 } 1514 mTempTouchState.reset(); 1515 if (maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER 1516 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) { 1517 mTempTouchState.deviceId = entry->deviceId; 1518 mTempTouchState.source = entry->source; 1519 mTempTouchState.displayId = displayId; 1520 } 1521 } else if (maskedAction == AMOTION_EVENT_ACTION_UP 1522 || maskedAction == AMOTION_EVENT_ACTION_CANCEL) { 1523 // All pointers up or canceled. 1524 mTempTouchState.reset(); 1525 } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1526 // First pointer went down. 1527 if (oldState && oldState->down) { 1528#if DEBUG_FOCUS 1529 ALOGD("Conflicting pointer actions: Down received while already down."); 1530#endif 1531 *outConflictingPointerActions = true; 1532 } 1533 } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 1534 // One pointer went up. 1535 if (isSplit) { 1536 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1537 uint32_t pointerId = entry->pointerProperties[pointerIndex].id; 1538 1539 for (size_t i = 0; i < mTempTouchState.windows.size(); ) { 1540 TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i); 1541 if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) { 1542 touchedWindow.pointerIds.clearBit(pointerId); 1543 if (touchedWindow.pointerIds.isEmpty()) { 1544 mTempTouchState.windows.removeAt(i); 1545 continue; 1546 } 1547 } 1548 i += 1; 1549 } 1550 } 1551 } 1552 1553 // Save changes unless the action was scroll in which case the temporary touch 1554 // state was only valid for this one action. 1555 if (maskedAction != AMOTION_EVENT_ACTION_SCROLL) { 1556 if (mTempTouchState.displayId >= 0) { 1557 if (oldStateIndex >= 0) { 1558 mTouchStatesByDisplay.editValueAt(oldStateIndex).copyFrom(mTempTouchState); 1559 } else { 1560 mTouchStatesByDisplay.add(displayId, mTempTouchState); 1561 } 1562 } else if (oldStateIndex >= 0) { 1563 mTouchStatesByDisplay.removeItemsAt(oldStateIndex); 1564 } 1565 } 1566 1567 // Update hover state. 1568 mLastHoverWindowHandle = newHoverWindowHandle; 1569 } 1570 } else { 1571#if DEBUG_FOCUS 1572 ALOGD("Not updating touch focus because injection was denied."); 1573#endif 1574 } 1575 1576Unresponsive: 1577 // Reset temporary touch state to ensure we release unnecessary references to input channels. 1578 mTempTouchState.reset(); 1579 1580 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1581 updateDispatchStatisticsLocked(currentTime, entry, 1582 injectionResult, timeSpentWaitingForApplication); 1583#if DEBUG_FOCUS 1584 ALOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, " 1585 "timeSpentWaitingForApplication=%0.1fms", 1586 injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0); 1587#endif 1588 return injectionResult; 1589} 1590 1591void InputDispatcher::addWindowTargetLocked(const sp<InputWindowHandle>& windowHandle, 1592 int32_t targetFlags, BitSet32 pointerIds, Vector<InputTarget>& inputTargets) { 1593 inputTargets.push(); 1594 1595 const InputWindowInfo* windowInfo = windowHandle->getInfo(); 1596 InputTarget& target = inputTargets.editTop(); 1597 target.inputChannel = windowInfo->inputChannel; 1598 target.flags = targetFlags; 1599 target.xOffset = - windowInfo->frameLeft; 1600 target.yOffset = - windowInfo->frameTop; 1601 target.scaleFactor = windowInfo->scaleFactor; 1602 target.pointerIds = pointerIds; 1603} 1604 1605void InputDispatcher::addMonitoringTargetsLocked(Vector<InputTarget>& inputTargets) { 1606 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 1607 inputTargets.push(); 1608 1609 InputTarget& target = inputTargets.editTop(); 1610 target.inputChannel = mMonitoringChannels[i]; 1611 target.flags = InputTarget::FLAG_DISPATCH_AS_IS; 1612 target.xOffset = 0; 1613 target.yOffset = 0; 1614 target.pointerIds.clear(); 1615 target.scaleFactor = 1.0f; 1616 } 1617} 1618 1619bool InputDispatcher::checkInjectionPermission(const sp<InputWindowHandle>& windowHandle, 1620 const InjectionState* injectionState) { 1621 if (injectionState 1622 && (windowHandle == NULL 1623 || windowHandle->getInfo()->ownerUid != injectionState->injectorUid) 1624 && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) { 1625 if (windowHandle != NULL) { 1626 ALOGW("Permission denied: injecting event from pid %d uid %d to window %s " 1627 "owned by uid %d", 1628 injectionState->injectorPid, injectionState->injectorUid, 1629 windowHandle->getName().string(), 1630 windowHandle->getInfo()->ownerUid); 1631 } else { 1632 ALOGW("Permission denied: injecting event from pid %d uid %d", 1633 injectionState->injectorPid, injectionState->injectorUid); 1634 } 1635 return false; 1636 } 1637 return true; 1638} 1639 1640bool InputDispatcher::isWindowObscuredAtPointLocked( 1641 const sp<InputWindowHandle>& windowHandle, int32_t x, int32_t y) const { 1642 int32_t displayId = windowHandle->getInfo()->displayId; 1643 size_t numWindows = mWindowHandles.size(); 1644 for (size_t i = 0; i < numWindows; i++) { 1645 sp<InputWindowHandle> otherHandle = mWindowHandles.itemAt(i); 1646 if (otherHandle == windowHandle) { 1647 break; 1648 } 1649 1650 const InputWindowInfo* otherInfo = otherHandle->getInfo(); 1651 if (otherInfo->displayId == displayId 1652 && otherInfo->visible && !otherInfo->isTrustedOverlay() 1653 && otherInfo->frameContainsPoint(x, y)) { 1654 return true; 1655 } 1656 } 1657 return false; 1658} 1659 1660bool InputDispatcher::isWindowReadyForMoreInputLocked(nsecs_t currentTime, 1661 const sp<InputWindowHandle>& windowHandle, const EventEntry* eventEntry) { 1662 ssize_t connectionIndex = getConnectionIndexLocked(windowHandle->getInputChannel()); 1663 if (connectionIndex >= 0) { 1664 sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex); 1665 if (connection->inputPublisherBlocked) { 1666 return false; 1667 } 1668 if (eventEntry->type == EventEntry::TYPE_KEY) { 1669 // If the event is a key event, then we must wait for all previous events to 1670 // complete before delivering it because previous events may have the 1671 // side-effect of transferring focus to a different window and we want to 1672 // ensure that the following keys are sent to the new window. 1673 // 1674 // Suppose the user touches a button in a window then immediately presses "A". 1675 // If the button causes a pop-up window to appear then we want to ensure that 1676 // the "A" key is delivered to the new pop-up window. This is because users 1677 // often anticipate pending UI changes when typing on a keyboard. 1678 // To obtain this behavior, we must serialize key events with respect to all 1679 // prior input events. 1680 return connection->outboundQueue.isEmpty() 1681 && connection->waitQueue.isEmpty(); 1682 } 1683 // Touch events can always be sent to a window immediately because the user intended 1684 // to touch whatever was visible at the time. Even if focus changes or a new 1685 // window appears moments later, the touch event was meant to be delivered to 1686 // whatever window happened to be on screen at the time. 1687 // 1688 // Generic motion events, such as trackball or joystick events are a little trickier. 1689 // Like key events, generic motion events are delivered to the focused window. 1690 // Unlike key events, generic motion events don't tend to transfer focus to other 1691 // windows and it is not important for them to be serialized. So we prefer to deliver 1692 // generic motion events as soon as possible to improve efficiency and reduce lag 1693 // through batching. 1694 // 1695 // The one case where we pause input event delivery is when the wait queue is piling 1696 // up with lots of events because the application is not responding. 1697 // This condition ensures that ANRs are detected reliably. 1698 if (!connection->waitQueue.isEmpty() 1699 && currentTime >= connection->waitQueue.head->deliveryTime 1700 + STREAM_AHEAD_EVENT_TIMEOUT) { 1701 return false; 1702 } 1703 } 1704 return true; 1705} 1706 1707String8 InputDispatcher::getApplicationWindowLabelLocked( 1708 const sp<InputApplicationHandle>& applicationHandle, 1709 const sp<InputWindowHandle>& windowHandle) { 1710 if (applicationHandle != NULL) { 1711 if (windowHandle != NULL) { 1712 String8 label(applicationHandle->getName()); 1713 label.append(" - "); 1714 label.append(windowHandle->getName()); 1715 return label; 1716 } else { 1717 return applicationHandle->getName(); 1718 } 1719 } else if (windowHandle != NULL) { 1720 return windowHandle->getName(); 1721 } else { 1722 return String8("<unknown application or window>"); 1723 } 1724} 1725 1726void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) { 1727 if (mFocusedWindowHandle != NULL) { 1728 const InputWindowInfo* info = mFocusedWindowHandle->getInfo(); 1729 if (info->inputFeatures & InputWindowInfo::INPUT_FEATURE_DISABLE_USER_ACTIVITY) { 1730#if DEBUG_DISPATCH_CYCLE 1731 ALOGD("Not poking user activity: disabled by window '%s'.", info->name.string()); 1732#endif 1733 return; 1734 } 1735 } 1736 1737 int32_t eventType = USER_ACTIVITY_EVENT_OTHER; 1738 switch (eventEntry->type) { 1739 case EventEntry::TYPE_MOTION: { 1740 const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry); 1741 if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) { 1742 return; 1743 } 1744 1745 if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) { 1746 eventType = USER_ACTIVITY_EVENT_TOUCH; 1747 } 1748 break; 1749 } 1750 case EventEntry::TYPE_KEY: { 1751 const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry); 1752 if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) { 1753 return; 1754 } 1755 eventType = USER_ACTIVITY_EVENT_BUTTON; 1756 break; 1757 } 1758 } 1759 1760 CommandEntry* commandEntry = postCommandLocked( 1761 & InputDispatcher::doPokeUserActivityLockedInterruptible); 1762 commandEntry->eventTime = eventEntry->eventTime; 1763 commandEntry->userActivityEventType = eventType; 1764} 1765 1766void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime, 1767 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) { 1768#if DEBUG_DISPATCH_CYCLE 1769 ALOGD("channel '%s' ~ prepareDispatchCycle - flags=0x%08x, " 1770 "xOffset=%f, yOffset=%f, scaleFactor=%f, " 1771 "pointerIds=0x%x", 1772 connection->getInputChannelName(), inputTarget->flags, 1773 inputTarget->xOffset, inputTarget->yOffset, 1774 inputTarget->scaleFactor, inputTarget->pointerIds.value); 1775#endif 1776 1777 // Skip this event if the connection status is not normal. 1778 // We don't want to enqueue additional outbound events if the connection is broken. 1779 if (connection->status != Connection::STATUS_NORMAL) { 1780#if DEBUG_DISPATCH_CYCLE 1781 ALOGD("channel '%s' ~ Dropping event because the channel status is %s", 1782 connection->getInputChannelName(), connection->getStatusLabel()); 1783#endif 1784 return; 1785 } 1786 1787 // Split a motion event if needed. 1788 if (inputTarget->flags & InputTarget::FLAG_SPLIT) { 1789 ALOG_ASSERT(eventEntry->type == EventEntry::TYPE_MOTION); 1790 1791 MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry); 1792 if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) { 1793 MotionEntry* splitMotionEntry = splitMotionEvent( 1794 originalMotionEntry, inputTarget->pointerIds); 1795 if (!splitMotionEntry) { 1796 return; // split event was dropped 1797 } 1798#if DEBUG_FOCUS 1799 ALOGD("channel '%s' ~ Split motion event.", 1800 connection->getInputChannelName()); 1801 logOutboundMotionDetailsLocked(" ", splitMotionEntry); 1802#endif 1803 enqueueDispatchEntriesLocked(currentTime, connection, 1804 splitMotionEntry, inputTarget); 1805 splitMotionEntry->release(); 1806 return; 1807 } 1808 } 1809 1810 // Not splitting. Enqueue dispatch entries for the event as is. 1811 enqueueDispatchEntriesLocked(currentTime, connection, eventEntry, inputTarget); 1812} 1813 1814void InputDispatcher::enqueueDispatchEntriesLocked(nsecs_t currentTime, 1815 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) { 1816 bool wasEmpty = connection->outboundQueue.isEmpty(); 1817 1818 // Enqueue dispatch entries for the requested modes. 1819 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1820 InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT); 1821 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1822 InputTarget::FLAG_DISPATCH_AS_OUTSIDE); 1823 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1824 InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER); 1825 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1826 InputTarget::FLAG_DISPATCH_AS_IS); 1827 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1828 InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT); 1829 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1830 InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER); 1831 1832 // If the outbound queue was previously empty, start the dispatch cycle going. 1833 if (wasEmpty && !connection->outboundQueue.isEmpty()) { 1834 startDispatchCycleLocked(currentTime, connection); 1835 } 1836} 1837 1838void InputDispatcher::enqueueDispatchEntryLocked( 1839 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1840 int32_t dispatchMode) { 1841 int32_t inputTargetFlags = inputTarget->flags; 1842 if (!(inputTargetFlags & dispatchMode)) { 1843 return; 1844 } 1845 inputTargetFlags = (inputTargetFlags & ~InputTarget::FLAG_DISPATCH_MASK) | dispatchMode; 1846 1847 // This is a new event. 1848 // Enqueue a new dispatch entry onto the outbound queue for this connection. 1849 DispatchEntry* dispatchEntry = new DispatchEntry(eventEntry, // increments ref 1850 inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset, 1851 inputTarget->scaleFactor); 1852 1853 // Apply target flags and update the connection's input state. 1854 switch (eventEntry->type) { 1855 case EventEntry::TYPE_KEY: { 1856 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 1857 dispatchEntry->resolvedAction = keyEntry->action; 1858 dispatchEntry->resolvedFlags = keyEntry->flags; 1859 1860 if (!connection->inputState.trackKey(keyEntry, 1861 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) { 1862#if DEBUG_DISPATCH_CYCLE 1863 ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent key event", 1864 connection->getInputChannelName()); 1865#endif 1866 delete dispatchEntry; 1867 return; // skip the inconsistent event 1868 } 1869 break; 1870 } 1871 1872 case EventEntry::TYPE_MOTION: { 1873 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1874 if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) { 1875 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_OUTSIDE; 1876 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT) { 1877 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_EXIT; 1878 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) { 1879 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER; 1880 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) { 1881 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_CANCEL; 1882 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER) { 1883 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_DOWN; 1884 } else { 1885 dispatchEntry->resolvedAction = motionEntry->action; 1886 } 1887 if (dispatchEntry->resolvedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1888 && !connection->inputState.isHovering( 1889 motionEntry->deviceId, motionEntry->source, motionEntry->displayId)) { 1890#if DEBUG_DISPATCH_CYCLE 1891 ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: filling in missing hover enter event", 1892 connection->getInputChannelName()); 1893#endif 1894 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER; 1895 } 1896 1897 dispatchEntry->resolvedFlags = motionEntry->flags; 1898 if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) { 1899 dispatchEntry->resolvedFlags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED; 1900 } 1901 1902 if (!connection->inputState.trackMotion(motionEntry, 1903 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) { 1904#if DEBUG_DISPATCH_CYCLE 1905 ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent motion event", 1906 connection->getInputChannelName()); 1907#endif 1908 delete dispatchEntry; 1909 return; // skip the inconsistent event 1910 } 1911 break; 1912 } 1913 } 1914 1915 // Remember that we are waiting for this dispatch to complete. 1916 if (dispatchEntry->hasForegroundTarget()) { 1917 incrementPendingForegroundDispatchesLocked(eventEntry); 1918 } 1919 1920 // Enqueue the dispatch entry. 1921 connection->outboundQueue.enqueueAtTail(dispatchEntry); 1922 traceOutboundQueueLengthLocked(connection); 1923} 1924 1925void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime, 1926 const sp<Connection>& connection) { 1927#if DEBUG_DISPATCH_CYCLE 1928 ALOGD("channel '%s' ~ startDispatchCycle", 1929 connection->getInputChannelName()); 1930#endif 1931 1932 while (connection->status == Connection::STATUS_NORMAL 1933 && !connection->outboundQueue.isEmpty()) { 1934 DispatchEntry* dispatchEntry = connection->outboundQueue.head; 1935 dispatchEntry->deliveryTime = currentTime; 1936 1937 // Publish the event. 1938 status_t status; 1939 EventEntry* eventEntry = dispatchEntry->eventEntry; 1940 switch (eventEntry->type) { 1941 case EventEntry::TYPE_KEY: { 1942 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 1943 1944 // Publish the key event. 1945 status = connection->inputPublisher.publishKeyEvent(dispatchEntry->seq, 1946 keyEntry->deviceId, keyEntry->source, 1947 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags, 1948 keyEntry->keyCode, keyEntry->scanCode, 1949 keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime, 1950 keyEntry->eventTime); 1951 break; 1952 } 1953 1954 case EventEntry::TYPE_MOTION: { 1955 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1956 1957 PointerCoords scaledCoords[MAX_POINTERS]; 1958 const PointerCoords* usingCoords = motionEntry->pointerCoords; 1959 1960 // Set the X and Y offset depending on the input source. 1961 float xOffset, yOffset, scaleFactor; 1962 if ((motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) 1963 && !(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) { 1964 scaleFactor = dispatchEntry->scaleFactor; 1965 xOffset = dispatchEntry->xOffset * scaleFactor; 1966 yOffset = dispatchEntry->yOffset * scaleFactor; 1967 if (scaleFactor != 1.0f) { 1968 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 1969 scaledCoords[i] = motionEntry->pointerCoords[i]; 1970 scaledCoords[i].scale(scaleFactor); 1971 } 1972 usingCoords = scaledCoords; 1973 } 1974 } else { 1975 xOffset = 0.0f; 1976 yOffset = 0.0f; 1977 scaleFactor = 1.0f; 1978 1979 // We don't want the dispatch target to know. 1980 if (dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS) { 1981 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 1982 scaledCoords[i].clear(); 1983 } 1984 usingCoords = scaledCoords; 1985 } 1986 } 1987 1988 // Publish the motion event. 1989 status = connection->inputPublisher.publishMotionEvent(dispatchEntry->seq, 1990 motionEntry->deviceId, motionEntry->source, 1991 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags, 1992 motionEntry->edgeFlags, motionEntry->metaState, motionEntry->buttonState, 1993 xOffset, yOffset, 1994 motionEntry->xPrecision, motionEntry->yPrecision, 1995 motionEntry->downTime, motionEntry->eventTime, 1996 motionEntry->pointerCount, motionEntry->pointerProperties, 1997 usingCoords); 1998 break; 1999 } 2000 2001 default: 2002 ALOG_ASSERT(false); 2003 return; 2004 } 2005 2006 // Check the result. 2007 if (status) { 2008 if (status == WOULD_BLOCK) { 2009 if (connection->waitQueue.isEmpty()) { 2010 ALOGE("channel '%s' ~ Could not publish event because the pipe is full. " 2011 "This is unexpected because the wait queue is empty, so the pipe " 2012 "should be empty and we shouldn't have any problems writing an " 2013 "event to it, status=%d", connection->getInputChannelName(), status); 2014 abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/); 2015 } else { 2016 // Pipe is full and we are waiting for the app to finish process some events 2017 // before sending more events to it. 2018#if DEBUG_DISPATCH_CYCLE 2019 ALOGD("channel '%s' ~ Could not publish event because the pipe is full, " 2020 "waiting for the application to catch up", 2021 connection->getInputChannelName()); 2022#endif 2023 connection->inputPublisherBlocked = true; 2024 } 2025 } else { 2026 ALOGE("channel '%s' ~ Could not publish event due to an unexpected error, " 2027 "status=%d", connection->getInputChannelName(), status); 2028 abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/); 2029 } 2030 return; 2031 } 2032 2033 // Re-enqueue the event on the wait queue. 2034 connection->outboundQueue.dequeue(dispatchEntry); 2035 traceOutboundQueueLengthLocked(connection); 2036 connection->waitQueue.enqueueAtTail(dispatchEntry); 2037 traceWaitQueueLengthLocked(connection); 2038 } 2039} 2040 2041void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime, 2042 const sp<Connection>& connection, uint32_t seq, bool handled) { 2043#if DEBUG_DISPATCH_CYCLE 2044 ALOGD("channel '%s' ~ finishDispatchCycle - seq=%u, handled=%s", 2045 connection->getInputChannelName(), seq, toString(handled)); 2046#endif 2047 2048 connection->inputPublisherBlocked = false; 2049 2050 if (connection->status == Connection::STATUS_BROKEN 2051 || connection->status == Connection::STATUS_ZOMBIE) { 2052 return; 2053 } 2054 2055 // Notify other system components and prepare to start the next dispatch cycle. 2056 onDispatchCycleFinishedLocked(currentTime, connection, seq, handled); 2057} 2058 2059void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime, 2060 const sp<Connection>& connection, bool notify) { 2061#if DEBUG_DISPATCH_CYCLE 2062 ALOGD("channel '%s' ~ abortBrokenDispatchCycle - notify=%s", 2063 connection->getInputChannelName(), toString(notify)); 2064#endif 2065 2066 // Clear the dispatch queues. 2067 drainDispatchQueueLocked(&connection->outboundQueue); 2068 traceOutboundQueueLengthLocked(connection); 2069 drainDispatchQueueLocked(&connection->waitQueue); 2070 traceWaitQueueLengthLocked(connection); 2071 2072 // The connection appears to be unrecoverably broken. 2073 // Ignore already broken or zombie connections. 2074 if (connection->status == Connection::STATUS_NORMAL) { 2075 connection->status = Connection::STATUS_BROKEN; 2076 2077 if (notify) { 2078 // Notify other system components. 2079 onDispatchCycleBrokenLocked(currentTime, connection); 2080 } 2081 } 2082} 2083 2084void InputDispatcher::drainDispatchQueueLocked(Queue<DispatchEntry>* queue) { 2085 while (!queue->isEmpty()) { 2086 DispatchEntry* dispatchEntry = queue->dequeueAtHead(); 2087 releaseDispatchEntryLocked(dispatchEntry); 2088 } 2089} 2090 2091void InputDispatcher::releaseDispatchEntryLocked(DispatchEntry* dispatchEntry) { 2092 if (dispatchEntry->hasForegroundTarget()) { 2093 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2094 } 2095 delete dispatchEntry; 2096} 2097 2098int InputDispatcher::handleReceiveCallback(int fd, int events, void* data) { 2099 InputDispatcher* d = static_cast<InputDispatcher*>(data); 2100 2101 { // acquire lock 2102 AutoMutex _l(d->mLock); 2103 2104 ssize_t connectionIndex = d->mConnectionsByFd.indexOfKey(fd); 2105 if (connectionIndex < 0) { 2106 ALOGE("Received spurious receive callback for unknown input channel. " 2107 "fd=%d, events=0x%x", fd, events); 2108 return 0; // remove the callback 2109 } 2110 2111 bool notify; 2112 sp<Connection> connection = d->mConnectionsByFd.valueAt(connectionIndex); 2113 if (!(events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP))) { 2114 if (!(events & ALOOPER_EVENT_INPUT)) { 2115 ALOGW("channel '%s' ~ Received spurious callback for unhandled poll event. " 2116 "events=0x%x", connection->getInputChannelName(), events); 2117 return 1; 2118 } 2119 2120 nsecs_t currentTime = now(); 2121 bool gotOne = false; 2122 status_t status; 2123 for (;;) { 2124 uint32_t seq; 2125 bool handled; 2126 status = connection->inputPublisher.receiveFinishedSignal(&seq, &handled); 2127 if (status) { 2128 break; 2129 } 2130 d->finishDispatchCycleLocked(currentTime, connection, seq, handled); 2131 gotOne = true; 2132 } 2133 if (gotOne) { 2134 d->runCommandsLockedInterruptible(); 2135 if (status == WOULD_BLOCK) { 2136 return 1; 2137 } 2138 } 2139 2140 notify = status != DEAD_OBJECT || !connection->monitor; 2141 if (notify) { 2142 ALOGE("channel '%s' ~ Failed to receive finished signal. status=%d", 2143 connection->getInputChannelName(), status); 2144 } 2145 } else { 2146 // Monitor channels are never explicitly unregistered. 2147 // We do it automatically when the remote endpoint is closed so don't warn 2148 // about them. 2149 notify = !connection->monitor; 2150 if (notify) { 2151 ALOGW("channel '%s' ~ Consumer closed input channel or an error occurred. " 2152 "events=0x%x", connection->getInputChannelName(), events); 2153 } 2154 } 2155 2156 // Unregister the channel. 2157 d->unregisterInputChannelLocked(connection->inputChannel, notify); 2158 return 0; // remove the callback 2159 } // release lock 2160} 2161 2162void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked( 2163 const CancelationOptions& options) { 2164 for (size_t i = 0; i < mConnectionsByFd.size(); i++) { 2165 synthesizeCancelationEventsForConnectionLocked( 2166 mConnectionsByFd.valueAt(i), options); 2167 } 2168} 2169 2170void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked( 2171 const sp<InputChannel>& channel, const CancelationOptions& options) { 2172 ssize_t index = getConnectionIndexLocked(channel); 2173 if (index >= 0) { 2174 synthesizeCancelationEventsForConnectionLocked( 2175 mConnectionsByFd.valueAt(index), options); 2176 } 2177} 2178 2179void InputDispatcher::synthesizeCancelationEventsForConnectionLocked( 2180 const sp<Connection>& connection, const CancelationOptions& options) { 2181 if (connection->status == Connection::STATUS_BROKEN) { 2182 return; 2183 } 2184 2185 nsecs_t currentTime = now(); 2186 2187 Vector<EventEntry*> cancelationEvents; 2188 connection->inputState.synthesizeCancelationEvents(currentTime, 2189 cancelationEvents, options); 2190 2191 if (!cancelationEvents.isEmpty()) { 2192#if DEBUG_OUTBOUND_EVENT_DETAILS 2193 ALOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync " 2194 "with reality: %s, mode=%d.", 2195 connection->getInputChannelName(), cancelationEvents.size(), 2196 options.reason, options.mode); 2197#endif 2198 for (size_t i = 0; i < cancelationEvents.size(); i++) { 2199 EventEntry* cancelationEventEntry = cancelationEvents.itemAt(i); 2200 switch (cancelationEventEntry->type) { 2201 case EventEntry::TYPE_KEY: 2202 logOutboundKeyDetailsLocked("cancel - ", 2203 static_cast<KeyEntry*>(cancelationEventEntry)); 2204 break; 2205 case EventEntry::TYPE_MOTION: 2206 logOutboundMotionDetailsLocked("cancel - ", 2207 static_cast<MotionEntry*>(cancelationEventEntry)); 2208 break; 2209 } 2210 2211 InputTarget target; 2212 sp<InputWindowHandle> windowHandle = getWindowHandleLocked(connection->inputChannel); 2213 if (windowHandle != NULL) { 2214 const InputWindowInfo* windowInfo = windowHandle->getInfo(); 2215 target.xOffset = -windowInfo->frameLeft; 2216 target.yOffset = -windowInfo->frameTop; 2217 target.scaleFactor = windowInfo->scaleFactor; 2218 } else { 2219 target.xOffset = 0; 2220 target.yOffset = 0; 2221 target.scaleFactor = 1.0f; 2222 } 2223 target.inputChannel = connection->inputChannel; 2224 target.flags = InputTarget::FLAG_DISPATCH_AS_IS; 2225 2226 enqueueDispatchEntryLocked(connection, cancelationEventEntry, // increments ref 2227 &target, InputTarget::FLAG_DISPATCH_AS_IS); 2228 2229 cancelationEventEntry->release(); 2230 } 2231 2232 startDispatchCycleLocked(currentTime, connection); 2233 } 2234} 2235 2236InputDispatcher::MotionEntry* 2237InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) { 2238 ALOG_ASSERT(pointerIds.value != 0); 2239 2240 uint32_t splitPointerIndexMap[MAX_POINTERS]; 2241 PointerProperties splitPointerProperties[MAX_POINTERS]; 2242 PointerCoords splitPointerCoords[MAX_POINTERS]; 2243 2244 uint32_t originalPointerCount = originalMotionEntry->pointerCount; 2245 uint32_t splitPointerCount = 0; 2246 2247 for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount; 2248 originalPointerIndex++) { 2249 const PointerProperties& pointerProperties = 2250 originalMotionEntry->pointerProperties[originalPointerIndex]; 2251 uint32_t pointerId = uint32_t(pointerProperties.id); 2252 if (pointerIds.hasBit(pointerId)) { 2253 splitPointerIndexMap[splitPointerCount] = originalPointerIndex; 2254 splitPointerProperties[splitPointerCount].copyFrom(pointerProperties); 2255 splitPointerCoords[splitPointerCount].copyFrom( 2256 originalMotionEntry->pointerCoords[originalPointerIndex]); 2257 splitPointerCount += 1; 2258 } 2259 } 2260 2261 if (splitPointerCount != pointerIds.count()) { 2262 // This is bad. We are missing some of the pointers that we expected to deliver. 2263 // Most likely this indicates that we received an ACTION_MOVE events that has 2264 // different pointer ids than we expected based on the previous ACTION_DOWN 2265 // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers 2266 // in this way. 2267 ALOGW("Dropping split motion event because the pointer count is %d but " 2268 "we expected there to be %d pointers. This probably means we received " 2269 "a broken sequence of pointer ids from the input device.", 2270 splitPointerCount, pointerIds.count()); 2271 return NULL; 2272 } 2273 2274 int32_t action = originalMotionEntry->action; 2275 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 2276 if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2277 || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 2278 int32_t originalPointerIndex = getMotionEventActionPointerIndex(action); 2279 const PointerProperties& pointerProperties = 2280 originalMotionEntry->pointerProperties[originalPointerIndex]; 2281 uint32_t pointerId = uint32_t(pointerProperties.id); 2282 if (pointerIds.hasBit(pointerId)) { 2283 if (pointerIds.count() == 1) { 2284 // The first/last pointer went down/up. 2285 action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2286 ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 2287 } else { 2288 // A secondary pointer went down/up. 2289 uint32_t splitPointerIndex = 0; 2290 while (pointerId != uint32_t(splitPointerProperties[splitPointerIndex].id)) { 2291 splitPointerIndex += 1; 2292 } 2293 action = maskedAction | (splitPointerIndex 2294 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); 2295 } 2296 } else { 2297 // An unrelated pointer changed. 2298 action = AMOTION_EVENT_ACTION_MOVE; 2299 } 2300 } 2301 2302 MotionEntry* splitMotionEntry = new MotionEntry( 2303 originalMotionEntry->eventTime, 2304 originalMotionEntry->deviceId, 2305 originalMotionEntry->source, 2306 originalMotionEntry->policyFlags, 2307 action, 2308 originalMotionEntry->flags, 2309 originalMotionEntry->metaState, 2310 originalMotionEntry->buttonState, 2311 originalMotionEntry->edgeFlags, 2312 originalMotionEntry->xPrecision, 2313 originalMotionEntry->yPrecision, 2314 originalMotionEntry->downTime, 2315 originalMotionEntry->displayId, 2316 splitPointerCount, splitPointerProperties, splitPointerCoords, 0, 0); 2317 2318 if (originalMotionEntry->injectionState) { 2319 splitMotionEntry->injectionState = originalMotionEntry->injectionState; 2320 splitMotionEntry->injectionState->refCount += 1; 2321 } 2322 2323 return splitMotionEntry; 2324} 2325 2326void InputDispatcher::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) { 2327#if DEBUG_INBOUND_EVENT_DETAILS 2328 ALOGD("notifyConfigurationChanged - eventTime=%lld", args->eventTime); 2329#endif 2330 2331 bool needWake; 2332 { // acquire lock 2333 AutoMutex _l(mLock); 2334 2335 ConfigurationChangedEntry* newEntry = new ConfigurationChangedEntry(args->eventTime); 2336 needWake = enqueueInboundEventLocked(newEntry); 2337 } // release lock 2338 2339 if (needWake) { 2340 mLooper->wake(); 2341 } 2342} 2343 2344void InputDispatcher::notifyKey(const NotifyKeyArgs* args) { 2345#if DEBUG_INBOUND_EVENT_DETAILS 2346 ALOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, " 2347 "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld", 2348 args->eventTime, args->deviceId, args->source, args->policyFlags, 2349 args->action, args->flags, args->keyCode, args->scanCode, 2350 args->metaState, args->downTime); 2351#endif 2352 if (!validateKeyEvent(args->action)) { 2353 return; 2354 } 2355 2356 uint32_t policyFlags = args->policyFlags; 2357 int32_t flags = args->flags; 2358 int32_t metaState = args->metaState; 2359 if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) { 2360 policyFlags |= POLICY_FLAG_VIRTUAL; 2361 flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 2362 } 2363 if (policyFlags & POLICY_FLAG_ALT) { 2364 metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON; 2365 } 2366 if (policyFlags & POLICY_FLAG_ALT_GR) { 2367 metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON; 2368 } 2369 if (policyFlags & POLICY_FLAG_SHIFT) { 2370 metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON; 2371 } 2372 if (policyFlags & POLICY_FLAG_CAPS_LOCK) { 2373 metaState |= AMETA_CAPS_LOCK_ON; 2374 } 2375 if (policyFlags & POLICY_FLAG_FUNCTION) { 2376 metaState |= AMETA_FUNCTION_ON; 2377 } 2378 2379 policyFlags |= POLICY_FLAG_TRUSTED; 2380 2381 KeyEvent event; 2382 event.initialize(args->deviceId, args->source, args->action, 2383 flags, args->keyCode, args->scanCode, metaState, 0, 2384 args->downTime, args->eventTime); 2385 2386 mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags); 2387 2388 bool needWake; 2389 { // acquire lock 2390 mLock.lock(); 2391 2392 if (shouldSendKeyToInputFilterLocked(args)) { 2393 mLock.unlock(); 2394 2395 policyFlags |= POLICY_FLAG_FILTERED; 2396 if (!mPolicy->filterInputEvent(&event, policyFlags)) { 2397 return; // event was consumed by the filter 2398 } 2399 2400 mLock.lock(); 2401 } 2402 2403 int32_t repeatCount = 0; 2404 KeyEntry* newEntry = new KeyEntry(args->eventTime, 2405 args->deviceId, args->source, policyFlags, 2406 args->action, flags, args->keyCode, args->scanCode, 2407 metaState, repeatCount, args->downTime); 2408 2409 needWake = enqueueInboundEventLocked(newEntry); 2410 mLock.unlock(); 2411 } // release lock 2412 2413 if (needWake) { 2414 mLooper->wake(); 2415 } 2416} 2417 2418bool InputDispatcher::shouldSendKeyToInputFilterLocked(const NotifyKeyArgs* args) { 2419 return mInputFilterEnabled; 2420} 2421 2422void InputDispatcher::notifyMotion(const NotifyMotionArgs* args) { 2423#if DEBUG_INBOUND_EVENT_DETAILS 2424 ALOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 2425 "action=0x%x, flags=0x%x, metaState=0x%x, buttonState=0x%x, edgeFlags=0x%x, " 2426 "xPrecision=%f, yPrecision=%f, downTime=%lld", 2427 args->eventTime, args->deviceId, args->source, args->policyFlags, 2428 args->action, args->flags, args->metaState, args->buttonState, 2429 args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime); 2430 for (uint32_t i = 0; i < args->pointerCount; i++) { 2431 ALOGD(" Pointer %d: id=%d, toolType=%d, " 2432 "x=%f, y=%f, pressure=%f, size=%f, " 2433 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 2434 "orientation=%f", 2435 i, args->pointerProperties[i].id, 2436 args->pointerProperties[i].toolType, 2437 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 2438 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 2439 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 2440 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 2441 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 2442 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 2443 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 2444 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 2445 args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 2446 } 2447#endif 2448 if (!validateMotionEvent(args->action, args->pointerCount, args->pointerProperties)) { 2449 return; 2450 } 2451 2452 uint32_t policyFlags = args->policyFlags; 2453 policyFlags |= POLICY_FLAG_TRUSTED; 2454 mPolicy->interceptMotionBeforeQueueing(args->eventTime, /*byref*/ policyFlags); 2455 2456 bool needWake; 2457 { // acquire lock 2458 mLock.lock(); 2459 2460 if (shouldSendMotionToInputFilterLocked(args)) { 2461 mLock.unlock(); 2462 2463 MotionEvent event; 2464 event.initialize(args->deviceId, args->source, args->action, args->flags, 2465 args->edgeFlags, args->metaState, args->buttonState, 0, 0, 2466 args->xPrecision, args->yPrecision, 2467 args->downTime, args->eventTime, 2468 args->pointerCount, args->pointerProperties, args->pointerCoords); 2469 2470 policyFlags |= POLICY_FLAG_FILTERED; 2471 if (!mPolicy->filterInputEvent(&event, policyFlags)) { 2472 return; // event was consumed by the filter 2473 } 2474 2475 mLock.lock(); 2476 } 2477 2478 // Just enqueue a new motion event. 2479 MotionEntry* newEntry = new MotionEntry(args->eventTime, 2480 args->deviceId, args->source, policyFlags, 2481 args->action, args->flags, args->metaState, args->buttonState, 2482 args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime, 2483 args->displayId, 2484 args->pointerCount, args->pointerProperties, args->pointerCoords, 0, 0); 2485 2486 needWake = enqueueInboundEventLocked(newEntry); 2487 mLock.unlock(); 2488 } // release lock 2489 2490 if (needWake) { 2491 mLooper->wake(); 2492 } 2493} 2494 2495bool InputDispatcher::shouldSendMotionToInputFilterLocked(const NotifyMotionArgs* args) { 2496 // TODO: support sending secondary display events to input filter 2497 return mInputFilterEnabled && isMainDisplay(args->displayId); 2498} 2499 2500void InputDispatcher::notifySwitch(const NotifySwitchArgs* args) { 2501#if DEBUG_INBOUND_EVENT_DETAILS 2502 ALOGD("notifySwitch - eventTime=%lld, policyFlags=0x%x, switchValues=0x%08x, switchMask=0x%08x", 2503 args->eventTime, args->policyFlags, 2504 args->switchValues, args->switchMask); 2505#endif 2506 2507 uint32_t policyFlags = args->policyFlags; 2508 policyFlags |= POLICY_FLAG_TRUSTED; 2509 mPolicy->notifySwitch(args->eventTime, 2510 args->switchValues, args->switchMask, policyFlags); 2511} 2512 2513void InputDispatcher::notifyDeviceReset(const NotifyDeviceResetArgs* args) { 2514#if DEBUG_INBOUND_EVENT_DETAILS 2515 ALOGD("notifyDeviceReset - eventTime=%lld, deviceId=%d", 2516 args->eventTime, args->deviceId); 2517#endif 2518 2519 bool needWake; 2520 { // acquire lock 2521 AutoMutex _l(mLock); 2522 2523 DeviceResetEntry* newEntry = new DeviceResetEntry(args->eventTime, args->deviceId); 2524 needWake = enqueueInboundEventLocked(newEntry); 2525 } // release lock 2526 2527 if (needWake) { 2528 mLooper->wake(); 2529 } 2530} 2531 2532int32_t InputDispatcher::injectInputEvent(const InputEvent* event, int32_t displayId, 2533 int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis, 2534 uint32_t policyFlags) { 2535#if DEBUG_INBOUND_EVENT_DETAILS 2536 ALOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, " 2537 "syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x", 2538 event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags); 2539#endif 2540 2541 nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis); 2542 2543 policyFlags |= POLICY_FLAG_INJECTED; 2544 if (hasInjectionPermission(injectorPid, injectorUid)) { 2545 policyFlags |= POLICY_FLAG_TRUSTED; 2546 } 2547 2548 EventEntry* firstInjectedEntry; 2549 EventEntry* lastInjectedEntry; 2550 switch (event->getType()) { 2551 case AINPUT_EVENT_TYPE_KEY: { 2552 const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event); 2553 int32_t action = keyEvent->getAction(); 2554 if (! validateKeyEvent(action)) { 2555 return INPUT_EVENT_INJECTION_FAILED; 2556 } 2557 2558 int32_t flags = keyEvent->getFlags(); 2559 if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) { 2560 policyFlags |= POLICY_FLAG_VIRTUAL; 2561 } 2562 2563 if (!(policyFlags & POLICY_FLAG_FILTERED)) { 2564 mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags); 2565 } 2566 2567 mLock.lock(); 2568 firstInjectedEntry = new KeyEntry(keyEvent->getEventTime(), 2569 keyEvent->getDeviceId(), keyEvent->getSource(), 2570 policyFlags, action, flags, 2571 keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(), 2572 keyEvent->getRepeatCount(), keyEvent->getDownTime()); 2573 lastInjectedEntry = firstInjectedEntry; 2574 break; 2575 } 2576 2577 case AINPUT_EVENT_TYPE_MOTION: { 2578 const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event); 2579 int32_t action = motionEvent->getAction(); 2580 size_t pointerCount = motionEvent->getPointerCount(); 2581 const PointerProperties* pointerProperties = motionEvent->getPointerProperties(); 2582 if (! validateMotionEvent(action, pointerCount, pointerProperties)) { 2583 return INPUT_EVENT_INJECTION_FAILED; 2584 } 2585 2586 if (!(policyFlags & POLICY_FLAG_FILTERED)) { 2587 nsecs_t eventTime = motionEvent->getEventTime(); 2588 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2589 } 2590 2591 mLock.lock(); 2592 const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes(); 2593 const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords(); 2594 firstInjectedEntry = new MotionEntry(*sampleEventTimes, 2595 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2596 action, motionEvent->getFlags(), 2597 motionEvent->getMetaState(), motionEvent->getButtonState(), 2598 motionEvent->getEdgeFlags(), 2599 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2600 motionEvent->getDownTime(), displayId, 2601 uint32_t(pointerCount), pointerProperties, samplePointerCoords, 2602 motionEvent->getXOffset(), motionEvent->getYOffset()); 2603 lastInjectedEntry = firstInjectedEntry; 2604 for (size_t i = motionEvent->getHistorySize(); i > 0; i--) { 2605 sampleEventTimes += 1; 2606 samplePointerCoords += pointerCount; 2607 MotionEntry* nextInjectedEntry = new MotionEntry(*sampleEventTimes, 2608 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2609 action, motionEvent->getFlags(), 2610 motionEvent->getMetaState(), motionEvent->getButtonState(), 2611 motionEvent->getEdgeFlags(), 2612 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2613 motionEvent->getDownTime(), displayId, 2614 uint32_t(pointerCount), pointerProperties, samplePointerCoords, 2615 motionEvent->getXOffset(), motionEvent->getYOffset()); 2616 lastInjectedEntry->next = nextInjectedEntry; 2617 lastInjectedEntry = nextInjectedEntry; 2618 } 2619 break; 2620 } 2621 2622 default: 2623 ALOGW("Cannot inject event of type %d", event->getType()); 2624 return INPUT_EVENT_INJECTION_FAILED; 2625 } 2626 2627 InjectionState* injectionState = new InjectionState(injectorPid, injectorUid); 2628 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2629 injectionState->injectionIsAsync = true; 2630 } 2631 2632 injectionState->refCount += 1; 2633 lastInjectedEntry->injectionState = injectionState; 2634 2635 bool needWake = false; 2636 for (EventEntry* entry = firstInjectedEntry; entry != NULL; ) { 2637 EventEntry* nextEntry = entry->next; 2638 needWake |= enqueueInboundEventLocked(entry); 2639 entry = nextEntry; 2640 } 2641 2642 mLock.unlock(); 2643 2644 if (needWake) { 2645 mLooper->wake(); 2646 } 2647 2648 int32_t injectionResult; 2649 { // acquire lock 2650 AutoMutex _l(mLock); 2651 2652 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2653 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 2654 } else { 2655 for (;;) { 2656 injectionResult = injectionState->injectionResult; 2657 if (injectionResult != INPUT_EVENT_INJECTION_PENDING) { 2658 break; 2659 } 2660 2661 nsecs_t remainingTimeout = endTime - now(); 2662 if (remainingTimeout <= 0) { 2663#if DEBUG_INJECTION 2664 ALOGD("injectInputEvent - Timed out waiting for injection result " 2665 "to become available."); 2666#endif 2667 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2668 break; 2669 } 2670 2671 mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout); 2672 } 2673 2674 if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED 2675 && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) { 2676 while (injectionState->pendingForegroundDispatches != 0) { 2677#if DEBUG_INJECTION 2678 ALOGD("injectInputEvent - Waiting for %d pending foreground dispatches.", 2679 injectionState->pendingForegroundDispatches); 2680#endif 2681 nsecs_t remainingTimeout = endTime - now(); 2682 if (remainingTimeout <= 0) { 2683#if DEBUG_INJECTION 2684 ALOGD("injectInputEvent - Timed out waiting for pending foreground " 2685 "dispatches to finish."); 2686#endif 2687 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2688 break; 2689 } 2690 2691 mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout); 2692 } 2693 } 2694 } 2695 2696 injectionState->release(); 2697 } // release lock 2698 2699#if DEBUG_INJECTION 2700 ALOGD("injectInputEvent - Finished with result %d. " 2701 "injectorPid=%d, injectorUid=%d", 2702 injectionResult, injectorPid, injectorUid); 2703#endif 2704 2705 return injectionResult; 2706} 2707 2708bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) { 2709 return injectorUid == 0 2710 || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid); 2711} 2712 2713void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) { 2714 InjectionState* injectionState = entry->injectionState; 2715 if (injectionState) { 2716#if DEBUG_INJECTION 2717 ALOGD("Setting input event injection result to %d. " 2718 "injectorPid=%d, injectorUid=%d", 2719 injectionResult, injectionState->injectorPid, injectionState->injectorUid); 2720#endif 2721 2722 if (injectionState->injectionIsAsync 2723 && !(entry->policyFlags & POLICY_FLAG_FILTERED)) { 2724 // Log the outcome since the injector did not wait for the injection result. 2725 switch (injectionResult) { 2726 case INPUT_EVENT_INJECTION_SUCCEEDED: 2727 ALOGV("Asynchronous input event injection succeeded."); 2728 break; 2729 case INPUT_EVENT_INJECTION_FAILED: 2730 ALOGW("Asynchronous input event injection failed."); 2731 break; 2732 case INPUT_EVENT_INJECTION_PERMISSION_DENIED: 2733 ALOGW("Asynchronous input event injection permission denied."); 2734 break; 2735 case INPUT_EVENT_INJECTION_TIMED_OUT: 2736 ALOGW("Asynchronous input event injection timed out."); 2737 break; 2738 } 2739 } 2740 2741 injectionState->injectionResult = injectionResult; 2742 mInjectionResultAvailableCondition.broadcast(); 2743 } 2744} 2745 2746void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2747 InjectionState* injectionState = entry->injectionState; 2748 if (injectionState) { 2749 injectionState->pendingForegroundDispatches += 1; 2750 } 2751} 2752 2753void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2754 InjectionState* injectionState = entry->injectionState; 2755 if (injectionState) { 2756 injectionState->pendingForegroundDispatches -= 1; 2757 2758 if (injectionState->pendingForegroundDispatches == 0) { 2759 mInjectionSyncFinishedCondition.broadcast(); 2760 } 2761 } 2762} 2763 2764sp<InputWindowHandle> InputDispatcher::getWindowHandleLocked( 2765 const sp<InputChannel>& inputChannel) const { 2766 size_t numWindows = mWindowHandles.size(); 2767 for (size_t i = 0; i < numWindows; i++) { 2768 const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i); 2769 if (windowHandle->getInputChannel() == inputChannel) { 2770 return windowHandle; 2771 } 2772 } 2773 return NULL; 2774} 2775 2776bool InputDispatcher::hasWindowHandleLocked( 2777 const sp<InputWindowHandle>& windowHandle) const { 2778 size_t numWindows = mWindowHandles.size(); 2779 for (size_t i = 0; i < numWindows; i++) { 2780 if (mWindowHandles.itemAt(i) == windowHandle) { 2781 return true; 2782 } 2783 } 2784 return false; 2785} 2786 2787void InputDispatcher::setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles) { 2788#if DEBUG_FOCUS 2789 ALOGD("setInputWindows"); 2790#endif 2791 { // acquire lock 2792 AutoMutex _l(mLock); 2793 2794 Vector<sp<InputWindowHandle> > oldWindowHandles = mWindowHandles; 2795 mWindowHandles = inputWindowHandles; 2796 2797 sp<InputWindowHandle> newFocusedWindowHandle; 2798 bool foundHoveredWindow = false; 2799 for (size_t i = 0; i < mWindowHandles.size(); i++) { 2800 const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i); 2801 if (!windowHandle->updateInfo() || windowHandle->getInputChannel() == NULL) { 2802 mWindowHandles.removeAt(i--); 2803 continue; 2804 } 2805 if (windowHandle->getInfo()->hasFocus) { 2806 newFocusedWindowHandle = windowHandle; 2807 } 2808 if (windowHandle == mLastHoverWindowHandle) { 2809 foundHoveredWindow = true; 2810 } 2811 } 2812 2813 if (!foundHoveredWindow) { 2814 mLastHoverWindowHandle = NULL; 2815 } 2816 2817 if (mFocusedWindowHandle != newFocusedWindowHandle) { 2818 if (mFocusedWindowHandle != NULL) { 2819#if DEBUG_FOCUS 2820 ALOGD("Focus left window: %s", 2821 mFocusedWindowHandle->getName().string()); 2822#endif 2823 sp<InputChannel> focusedInputChannel = mFocusedWindowHandle->getInputChannel(); 2824 if (focusedInputChannel != NULL) { 2825 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, 2826 "focus left window"); 2827 synthesizeCancelationEventsForInputChannelLocked( 2828 focusedInputChannel, options); 2829 } 2830 } 2831 if (newFocusedWindowHandle != NULL) { 2832#if DEBUG_FOCUS 2833 ALOGD("Focus entered window: %s", 2834 newFocusedWindowHandle->getName().string()); 2835#endif 2836 } 2837 mFocusedWindowHandle = newFocusedWindowHandle; 2838 } 2839 2840 for (size_t d = 0; d < mTouchStatesByDisplay.size(); d++) { 2841 TouchState& state = mTouchStatesByDisplay.editValueAt(d); 2842 for (size_t i = 0; i < state.windows.size(); i++) { 2843 TouchedWindow& touchedWindow = state.windows.editItemAt(i); 2844 if (!hasWindowHandleLocked(touchedWindow.windowHandle)) { 2845#if DEBUG_FOCUS 2846 ALOGD("Touched window was removed: %s", 2847 touchedWindow.windowHandle->getName().string()); 2848#endif 2849 sp<InputChannel> touchedInputChannel = 2850 touchedWindow.windowHandle->getInputChannel(); 2851 if (touchedInputChannel != NULL) { 2852 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 2853 "touched window was removed"); 2854 synthesizeCancelationEventsForInputChannelLocked( 2855 touchedInputChannel, options); 2856 } 2857 state.windows.removeAt(i--); 2858 } 2859 } 2860 } 2861 2862 // Release information for windows that are no longer present. 2863 // This ensures that unused input channels are released promptly. 2864 // Otherwise, they might stick around until the window handle is destroyed 2865 // which might not happen until the next GC. 2866 for (size_t i = 0; i < oldWindowHandles.size(); i++) { 2867 const sp<InputWindowHandle>& oldWindowHandle = oldWindowHandles.itemAt(i); 2868 if (!hasWindowHandleLocked(oldWindowHandle)) { 2869#if DEBUG_FOCUS 2870 ALOGD("Window went away: %s", oldWindowHandle->getName().string()); 2871#endif 2872 oldWindowHandle->releaseInfo(); 2873 } 2874 } 2875 } // release lock 2876 2877 // Wake up poll loop since it may need to make new input dispatching choices. 2878 mLooper->wake(); 2879} 2880 2881void InputDispatcher::setFocusedApplication( 2882 const sp<InputApplicationHandle>& inputApplicationHandle) { 2883#if DEBUG_FOCUS 2884 ALOGD("setFocusedApplication"); 2885#endif 2886 { // acquire lock 2887 AutoMutex _l(mLock); 2888 2889 if (inputApplicationHandle != NULL && inputApplicationHandle->updateInfo()) { 2890 if (mFocusedApplicationHandle != inputApplicationHandle) { 2891 if (mFocusedApplicationHandle != NULL) { 2892 resetANRTimeoutsLocked(); 2893 mFocusedApplicationHandle->releaseInfo(); 2894 } 2895 mFocusedApplicationHandle = inputApplicationHandle; 2896 } 2897 } else if (mFocusedApplicationHandle != NULL) { 2898 resetANRTimeoutsLocked(); 2899 mFocusedApplicationHandle->releaseInfo(); 2900 mFocusedApplicationHandle.clear(); 2901 } 2902 2903#if DEBUG_FOCUS 2904 //logDispatchStateLocked(); 2905#endif 2906 } // release lock 2907 2908 // Wake up poll loop since it may need to make new input dispatching choices. 2909 mLooper->wake(); 2910} 2911 2912void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) { 2913#if DEBUG_FOCUS 2914 ALOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen); 2915#endif 2916 2917 bool changed; 2918 { // acquire lock 2919 AutoMutex _l(mLock); 2920 2921 if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) { 2922 if (mDispatchFrozen && !frozen) { 2923 resetANRTimeoutsLocked(); 2924 } 2925 2926 if (mDispatchEnabled && !enabled) { 2927 resetAndDropEverythingLocked("dispatcher is being disabled"); 2928 } 2929 2930 mDispatchEnabled = enabled; 2931 mDispatchFrozen = frozen; 2932 changed = true; 2933 } else { 2934 changed = false; 2935 } 2936 2937#if DEBUG_FOCUS 2938 //logDispatchStateLocked(); 2939#endif 2940 } // release lock 2941 2942 if (changed) { 2943 // Wake up poll loop since it may need to make new input dispatching choices. 2944 mLooper->wake(); 2945 } 2946} 2947 2948void InputDispatcher::setInputFilterEnabled(bool enabled) { 2949#if DEBUG_FOCUS 2950 ALOGD("setInputFilterEnabled: enabled=%d", enabled); 2951#endif 2952 2953 { // acquire lock 2954 AutoMutex _l(mLock); 2955 2956 if (mInputFilterEnabled == enabled) { 2957 return; 2958 } 2959 2960 mInputFilterEnabled = enabled; 2961 resetAndDropEverythingLocked("input filter is being enabled or disabled"); 2962 } // release lock 2963 2964 // Wake up poll loop since there might be work to do to drop everything. 2965 mLooper->wake(); 2966} 2967 2968bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel, 2969 const sp<InputChannel>& toChannel) { 2970#if DEBUG_FOCUS 2971 ALOGD("transferTouchFocus: fromChannel=%s, toChannel=%s", 2972 fromChannel->getName().string(), toChannel->getName().string()); 2973#endif 2974 { // acquire lock 2975 AutoMutex _l(mLock); 2976 2977 sp<InputWindowHandle> fromWindowHandle = getWindowHandleLocked(fromChannel); 2978 sp<InputWindowHandle> toWindowHandle = getWindowHandleLocked(toChannel); 2979 if (fromWindowHandle == NULL || toWindowHandle == NULL) { 2980#if DEBUG_FOCUS 2981 ALOGD("Cannot transfer focus because from or to window not found."); 2982#endif 2983 return false; 2984 } 2985 if (fromWindowHandle == toWindowHandle) { 2986#if DEBUG_FOCUS 2987 ALOGD("Trivial transfer to same window."); 2988#endif 2989 return true; 2990 } 2991 if (fromWindowHandle->getInfo()->displayId != toWindowHandle->getInfo()->displayId) { 2992#if DEBUG_FOCUS 2993 ALOGD("Cannot transfer focus because windows are on different displays."); 2994#endif 2995 return false; 2996 } 2997 2998 bool found = false; 2999 for (size_t d = 0; d < mTouchStatesByDisplay.size(); d++) { 3000 TouchState& state = mTouchStatesByDisplay.editValueAt(d); 3001 for (size_t i = 0; i < state.windows.size(); i++) { 3002 const TouchedWindow& touchedWindow = state.windows[i]; 3003 if (touchedWindow.windowHandle == fromWindowHandle) { 3004 int32_t oldTargetFlags = touchedWindow.targetFlags; 3005 BitSet32 pointerIds = touchedWindow.pointerIds; 3006 3007 state.windows.removeAt(i); 3008 3009 int32_t newTargetFlags = oldTargetFlags 3010 & (InputTarget::FLAG_FOREGROUND 3011 | InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS); 3012 state.addOrUpdateWindow(toWindowHandle, newTargetFlags, pointerIds); 3013 3014 found = true; 3015 goto Found; 3016 } 3017 } 3018 } 3019Found: 3020 3021 if (! found) { 3022#if DEBUG_FOCUS 3023 ALOGD("Focus transfer failed because from window did not have focus."); 3024#endif 3025 return false; 3026 } 3027 3028 ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel); 3029 ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel); 3030 if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) { 3031 sp<Connection> fromConnection = mConnectionsByFd.valueAt(fromConnectionIndex); 3032 sp<Connection> toConnection = mConnectionsByFd.valueAt(toConnectionIndex); 3033 3034 fromConnection->inputState.copyPointerStateTo(toConnection->inputState); 3035 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 3036 "transferring touch focus from this window to another window"); 3037 synthesizeCancelationEventsForConnectionLocked(fromConnection, options); 3038 } 3039 3040#if DEBUG_FOCUS 3041 logDispatchStateLocked(); 3042#endif 3043 } // release lock 3044 3045 // Wake up poll loop since it may need to make new input dispatching choices. 3046 mLooper->wake(); 3047 return true; 3048} 3049 3050void InputDispatcher::resetAndDropEverythingLocked(const char* reason) { 3051#if DEBUG_FOCUS 3052 ALOGD("Resetting and dropping all events (%s).", reason); 3053#endif 3054 3055 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, reason); 3056 synthesizeCancelationEventsForAllConnectionsLocked(options); 3057 3058 resetKeyRepeatLocked(); 3059 releasePendingEventLocked(); 3060 drainInboundQueueLocked(); 3061 resetANRTimeoutsLocked(); 3062 3063 mTouchStatesByDisplay.clear(); 3064 mLastHoverWindowHandle.clear(); 3065} 3066 3067void InputDispatcher::logDispatchStateLocked() { 3068 String8 dump; 3069 dumpDispatchStateLocked(dump); 3070 3071 char* text = dump.lockBuffer(dump.size()); 3072 char* start = text; 3073 while (*start != '\0') { 3074 char* end = strchr(start, '\n'); 3075 if (*end == '\n') { 3076 *(end++) = '\0'; 3077 } 3078 ALOGD("%s", start); 3079 start = end; 3080 } 3081} 3082 3083void InputDispatcher::dumpDispatchStateLocked(String8& dump) { 3084 dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled); 3085 dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen); 3086 3087 if (mFocusedApplicationHandle != NULL) { 3088 dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n", 3089 mFocusedApplicationHandle->getName().string(), 3090 mFocusedApplicationHandle->getDispatchingTimeout( 3091 DEFAULT_INPUT_DISPATCHING_TIMEOUT) / 1000000.0); 3092 } else { 3093 dump.append(INDENT "FocusedApplication: <null>\n"); 3094 } 3095 dump.appendFormat(INDENT "FocusedWindow: name='%s'\n", 3096 mFocusedWindowHandle != NULL ? mFocusedWindowHandle->getName().string() : "<null>"); 3097 3098 if (!mTouchStatesByDisplay.isEmpty()) { 3099 dump.appendFormat(INDENT "TouchStatesByDisplay:\n"); 3100 for (size_t i = 0; i < mTouchStatesByDisplay.size(); i++) { 3101 const TouchState& state = mTouchStatesByDisplay.valueAt(i); 3102 dump.appendFormat(INDENT2 "%d: down=%s, split=%s, deviceId=%d, source=0x%08x\n", 3103 state.displayId, toString(state.down), toString(state.split), 3104 state.deviceId, state.source); 3105 if (!state.windows.isEmpty()) { 3106 dump.append(INDENT3 "Windows:\n"); 3107 for (size_t i = 0; i < state.windows.size(); i++) { 3108 const TouchedWindow& touchedWindow = state.windows[i]; 3109 dump.appendFormat(INDENT4 "%zu: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n", 3110 i, touchedWindow.windowHandle->getName().string(), 3111 touchedWindow.pointerIds.value, 3112 touchedWindow.targetFlags); 3113 } 3114 } else { 3115 dump.append(INDENT3 "Windows: <none>\n"); 3116 } 3117 } 3118 } else { 3119 dump.append(INDENT "TouchStates: <no displays touched>\n"); 3120 } 3121 3122 if (!mWindowHandles.isEmpty()) { 3123 dump.append(INDENT "Windows:\n"); 3124 for (size_t i = 0; i < mWindowHandles.size(); i++) { 3125 const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i); 3126 const InputWindowInfo* windowInfo = windowHandle->getInfo(); 3127 3128 dump.appendFormat(INDENT2 "%zu: name='%s', displayId=%d, " 3129 "paused=%s, hasFocus=%s, hasWallpaper=%s, " 3130 "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, " 3131 "frame=[%d,%d][%d,%d], scale=%f, " 3132 "touchableRegion=", 3133 i, windowInfo->name.string(), windowInfo->displayId, 3134 toString(windowInfo->paused), 3135 toString(windowInfo->hasFocus), 3136 toString(windowInfo->hasWallpaper), 3137 toString(windowInfo->visible), 3138 toString(windowInfo->canReceiveKeys), 3139 windowInfo->layoutParamsFlags, windowInfo->layoutParamsType, 3140 windowInfo->layer, 3141 windowInfo->frameLeft, windowInfo->frameTop, 3142 windowInfo->frameRight, windowInfo->frameBottom, 3143 windowInfo->scaleFactor); 3144 dumpRegion(dump, windowInfo->touchableRegion); 3145 dump.appendFormat(", inputFeatures=0x%08x", windowInfo->inputFeatures); 3146 dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n", 3147 windowInfo->ownerPid, windowInfo->ownerUid, 3148 windowInfo->dispatchingTimeout / 1000000.0); 3149 } 3150 } else { 3151 dump.append(INDENT "Windows: <none>\n"); 3152 } 3153 3154 if (!mMonitoringChannels.isEmpty()) { 3155 dump.append(INDENT "MonitoringChannels:\n"); 3156 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3157 const sp<InputChannel>& channel = mMonitoringChannels[i]; 3158 dump.appendFormat(INDENT2 "%zu: '%s'\n", i, channel->getName().string()); 3159 } 3160 } else { 3161 dump.append(INDENT "MonitoringChannels: <none>\n"); 3162 } 3163 3164 nsecs_t currentTime = now(); 3165 3166 // Dump recently dispatched or dropped events from oldest to newest. 3167 if (!mRecentQueue.isEmpty()) { 3168 dump.appendFormat(INDENT "RecentQueue: length=%u\n", mRecentQueue.count()); 3169 for (EventEntry* entry = mRecentQueue.head; entry; entry = entry->next) { 3170 dump.append(INDENT2); 3171 entry->appendDescription(dump); 3172 dump.appendFormat(", age=%0.1fms\n", 3173 (currentTime - entry->eventTime) * 0.000001f); 3174 } 3175 } else { 3176 dump.append(INDENT "RecentQueue: <empty>\n"); 3177 } 3178 3179 // Dump event currently being dispatched. 3180 if (mPendingEvent) { 3181 dump.append(INDENT "PendingEvent:\n"); 3182 dump.append(INDENT2); 3183 mPendingEvent->appendDescription(dump); 3184 dump.appendFormat(", age=%0.1fms\n", 3185 (currentTime - mPendingEvent->eventTime) * 0.000001f); 3186 } else { 3187 dump.append(INDENT "PendingEvent: <none>\n"); 3188 } 3189 3190 // Dump inbound events from oldest to newest. 3191 if (!mInboundQueue.isEmpty()) { 3192 dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count()); 3193 for (EventEntry* entry = mInboundQueue.head; entry; entry = entry->next) { 3194 dump.append(INDENT2); 3195 entry->appendDescription(dump); 3196 dump.appendFormat(", age=%0.1fms\n", 3197 (currentTime - entry->eventTime) * 0.000001f); 3198 } 3199 } else { 3200 dump.append(INDENT "InboundQueue: <empty>\n"); 3201 } 3202 3203 if (!mConnectionsByFd.isEmpty()) { 3204 dump.append(INDENT "Connections:\n"); 3205 for (size_t i = 0; i < mConnectionsByFd.size(); i++) { 3206 const sp<Connection>& connection = mConnectionsByFd.valueAt(i); 3207 dump.appendFormat(INDENT2 "%zu: channelName='%s', windowName='%s', " 3208 "status=%s, monitor=%s, inputPublisherBlocked=%s\n", 3209 i, connection->getInputChannelName(), connection->getWindowName(), 3210 connection->getStatusLabel(), toString(connection->monitor), 3211 toString(connection->inputPublisherBlocked)); 3212 3213 if (!connection->outboundQueue.isEmpty()) { 3214 dump.appendFormat(INDENT3 "OutboundQueue: length=%u\n", 3215 connection->outboundQueue.count()); 3216 for (DispatchEntry* entry = connection->outboundQueue.head; entry; 3217 entry = entry->next) { 3218 dump.append(INDENT4); 3219 entry->eventEntry->appendDescription(dump); 3220 dump.appendFormat(", targetFlags=0x%08x, resolvedAction=%d, age=%0.1fms\n", 3221 entry->targetFlags, entry->resolvedAction, 3222 (currentTime - entry->eventEntry->eventTime) * 0.000001f); 3223 } 3224 } else { 3225 dump.append(INDENT3 "OutboundQueue: <empty>\n"); 3226 } 3227 3228 if (!connection->waitQueue.isEmpty()) { 3229 dump.appendFormat(INDENT3 "WaitQueue: length=%u\n", 3230 connection->waitQueue.count()); 3231 for (DispatchEntry* entry = connection->waitQueue.head; entry; 3232 entry = entry->next) { 3233 dump.append(INDENT4); 3234 entry->eventEntry->appendDescription(dump); 3235 dump.appendFormat(", targetFlags=0x%08x, resolvedAction=%d, " 3236 "age=%0.1fms, wait=%0.1fms\n", 3237 entry->targetFlags, entry->resolvedAction, 3238 (currentTime - entry->eventEntry->eventTime) * 0.000001f, 3239 (currentTime - entry->deliveryTime) * 0.000001f); 3240 } 3241 } else { 3242 dump.append(INDENT3 "WaitQueue: <empty>\n"); 3243 } 3244 } 3245 } else { 3246 dump.append(INDENT "Connections: <none>\n"); 3247 } 3248 3249 if (isAppSwitchPendingLocked()) { 3250 dump.appendFormat(INDENT "AppSwitch: pending, due in %0.1fms\n", 3251 (mAppSwitchDueTime - now()) / 1000000.0); 3252 } else { 3253 dump.append(INDENT "AppSwitch: not pending\n"); 3254 } 3255 3256 dump.append(INDENT "Configuration:\n"); 3257 dump.appendFormat(INDENT2 "KeyRepeatDelay: %0.1fms\n", 3258 mConfig.keyRepeatDelay * 0.000001f); 3259 dump.appendFormat(INDENT2 "KeyRepeatTimeout: %0.1fms\n", 3260 mConfig.keyRepeatTimeout * 0.000001f); 3261} 3262 3263status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel, 3264 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) { 3265#if DEBUG_REGISTRATION 3266 ALOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(), 3267 toString(monitor)); 3268#endif 3269 3270 { // acquire lock 3271 AutoMutex _l(mLock); 3272 3273 if (getConnectionIndexLocked(inputChannel) >= 0) { 3274 ALOGW("Attempted to register already registered input channel '%s'", 3275 inputChannel->getName().string()); 3276 return BAD_VALUE; 3277 } 3278 3279 sp<Connection> connection = new Connection(inputChannel, inputWindowHandle, monitor); 3280 3281 int fd = inputChannel->getFd(); 3282 mConnectionsByFd.add(fd, connection); 3283 3284 if (monitor) { 3285 mMonitoringChannels.push(inputChannel); 3286 } 3287 3288 mLooper->addFd(fd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this); 3289 } // release lock 3290 3291 // Wake the looper because some connections have changed. 3292 mLooper->wake(); 3293 return OK; 3294} 3295 3296status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) { 3297#if DEBUG_REGISTRATION 3298 ALOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string()); 3299#endif 3300 3301 { // acquire lock 3302 AutoMutex _l(mLock); 3303 3304 status_t status = unregisterInputChannelLocked(inputChannel, false /*notify*/); 3305 if (status) { 3306 return status; 3307 } 3308 } // release lock 3309 3310 // Wake the poll loop because removing the connection may have changed the current 3311 // synchronization state. 3312 mLooper->wake(); 3313 return OK; 3314} 3315 3316status_t InputDispatcher::unregisterInputChannelLocked(const sp<InputChannel>& inputChannel, 3317 bool notify) { 3318 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 3319 if (connectionIndex < 0) { 3320 ALOGW("Attempted to unregister already unregistered input channel '%s'", 3321 inputChannel->getName().string()); 3322 return BAD_VALUE; 3323 } 3324 3325 sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex); 3326 mConnectionsByFd.removeItemsAt(connectionIndex); 3327 3328 if (connection->monitor) { 3329 removeMonitorChannelLocked(inputChannel); 3330 } 3331 3332 mLooper->removeFd(inputChannel->getFd()); 3333 3334 nsecs_t currentTime = now(); 3335 abortBrokenDispatchCycleLocked(currentTime, connection, notify); 3336 3337 connection->status = Connection::STATUS_ZOMBIE; 3338 return OK; 3339} 3340 3341void InputDispatcher::removeMonitorChannelLocked(const sp<InputChannel>& inputChannel) { 3342 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3343 if (mMonitoringChannels[i] == inputChannel) { 3344 mMonitoringChannels.removeAt(i); 3345 break; 3346 } 3347 } 3348} 3349 3350ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) { 3351 ssize_t connectionIndex = mConnectionsByFd.indexOfKey(inputChannel->getFd()); 3352 if (connectionIndex >= 0) { 3353 sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex); 3354 if (connection->inputChannel.get() == inputChannel.get()) { 3355 return connectionIndex; 3356 } 3357 } 3358 3359 return -1; 3360} 3361 3362void InputDispatcher::onDispatchCycleFinishedLocked( 3363 nsecs_t currentTime, const sp<Connection>& connection, uint32_t seq, bool handled) { 3364 CommandEntry* commandEntry = postCommandLocked( 3365 & InputDispatcher::doDispatchCycleFinishedLockedInterruptible); 3366 commandEntry->connection = connection; 3367 commandEntry->eventTime = currentTime; 3368 commandEntry->seq = seq; 3369 commandEntry->handled = handled; 3370} 3371 3372void InputDispatcher::onDispatchCycleBrokenLocked( 3373 nsecs_t currentTime, const sp<Connection>& connection) { 3374 ALOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!", 3375 connection->getInputChannelName()); 3376 3377 CommandEntry* commandEntry = postCommandLocked( 3378 & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible); 3379 commandEntry->connection = connection; 3380} 3381 3382void InputDispatcher::onANRLocked( 3383 nsecs_t currentTime, const sp<InputApplicationHandle>& applicationHandle, 3384 const sp<InputWindowHandle>& windowHandle, 3385 nsecs_t eventTime, nsecs_t waitStartTime, const char* reason) { 3386 float dispatchLatency = (currentTime - eventTime) * 0.000001f; 3387 float waitDuration = (currentTime - waitStartTime) * 0.000001f; 3388 ALOGI("Application is not responding: %s. " 3389 "It has been %0.1fms since event, %0.1fms since wait started. Reason: %s", 3390 getApplicationWindowLabelLocked(applicationHandle, windowHandle).string(), 3391 dispatchLatency, waitDuration, reason); 3392 3393 // Capture a record of the InputDispatcher state at the time of the ANR. 3394 time_t t = time(NULL); 3395 struct tm tm; 3396 localtime_r(&t, &tm); 3397 char timestr[64]; 3398 strftime(timestr, sizeof(timestr), "%F %T", &tm); 3399 mLastANRState.clear(); 3400 mLastANRState.append(INDENT "ANR:\n"); 3401 mLastANRState.appendFormat(INDENT2 "Time: %s\n", timestr); 3402 mLastANRState.appendFormat(INDENT2 "Window: %s\n", 3403 getApplicationWindowLabelLocked(applicationHandle, windowHandle).string()); 3404 mLastANRState.appendFormat(INDENT2 "DispatchLatency: %0.1fms\n", dispatchLatency); 3405 mLastANRState.appendFormat(INDENT2 "WaitDuration: %0.1fms\n", waitDuration); 3406 mLastANRState.appendFormat(INDENT2 "Reason: %s\n", reason); 3407 dumpDispatchStateLocked(mLastANRState); 3408 3409 CommandEntry* commandEntry = postCommandLocked( 3410 & InputDispatcher::doNotifyANRLockedInterruptible); 3411 commandEntry->inputApplicationHandle = applicationHandle; 3412 commandEntry->inputWindowHandle = windowHandle; 3413 commandEntry->reason = reason; 3414} 3415 3416void InputDispatcher::doNotifyConfigurationChangedInterruptible( 3417 CommandEntry* commandEntry) { 3418 mLock.unlock(); 3419 3420 mPolicy->notifyConfigurationChanged(commandEntry->eventTime); 3421 3422 mLock.lock(); 3423} 3424 3425void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible( 3426 CommandEntry* commandEntry) { 3427 sp<Connection> connection = commandEntry->connection; 3428 3429 if (connection->status != Connection::STATUS_ZOMBIE) { 3430 mLock.unlock(); 3431 3432 mPolicy->notifyInputChannelBroken(connection->inputWindowHandle); 3433 3434 mLock.lock(); 3435 } 3436} 3437 3438void InputDispatcher::doNotifyANRLockedInterruptible( 3439 CommandEntry* commandEntry) { 3440 mLock.unlock(); 3441 3442 nsecs_t newTimeout = mPolicy->notifyANR( 3443 commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle, 3444 commandEntry->reason); 3445 3446 mLock.lock(); 3447 3448 resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, 3449 commandEntry->inputWindowHandle != NULL 3450 ? commandEntry->inputWindowHandle->getInputChannel() : NULL); 3451} 3452 3453void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible( 3454 CommandEntry* commandEntry) { 3455 KeyEntry* entry = commandEntry->keyEntry; 3456 3457 KeyEvent event; 3458 initializeKeyEvent(&event, entry); 3459 3460 mLock.unlock(); 3461 3462 nsecs_t delay = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle, 3463 &event, entry->policyFlags); 3464 3465 mLock.lock(); 3466 3467 if (delay < 0) { 3468 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_SKIP; 3469 } else if (!delay) { 3470 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 3471 } else { 3472 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER; 3473 entry->interceptKeyWakeupTime = now() + delay; 3474 } 3475 entry->release(); 3476} 3477 3478void InputDispatcher::doDispatchCycleFinishedLockedInterruptible( 3479 CommandEntry* commandEntry) { 3480 sp<Connection> connection = commandEntry->connection; 3481 nsecs_t finishTime = commandEntry->eventTime; 3482 uint32_t seq = commandEntry->seq; 3483 bool handled = commandEntry->handled; 3484 3485 // Handle post-event policy actions. 3486 DispatchEntry* dispatchEntry = connection->findWaitQueueEntry(seq); 3487 if (dispatchEntry) { 3488 nsecs_t eventDuration = finishTime - dispatchEntry->deliveryTime; 3489 if (eventDuration > SLOW_EVENT_PROCESSING_WARNING_TIMEOUT) { 3490 String8 msg; 3491 msg.appendFormat("Window '%s' spent %0.1fms processing the last input event: ", 3492 connection->getWindowName(), eventDuration * 0.000001f); 3493 dispatchEntry->eventEntry->appendDescription(msg); 3494 ALOGI("%s", msg.string()); 3495 } 3496 3497 bool restartEvent; 3498 if (dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) { 3499 KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry); 3500 restartEvent = afterKeyEventLockedInterruptible(connection, 3501 dispatchEntry, keyEntry, handled); 3502 } else if (dispatchEntry->eventEntry->type == EventEntry::TYPE_MOTION) { 3503 MotionEntry* motionEntry = static_cast<MotionEntry*>(dispatchEntry->eventEntry); 3504 restartEvent = afterMotionEventLockedInterruptible(connection, 3505 dispatchEntry, motionEntry, handled); 3506 } else { 3507 restartEvent = false; 3508 } 3509 3510 // Dequeue the event and start the next cycle. 3511 // Note that because the lock might have been released, it is possible that the 3512 // contents of the wait queue to have been drained, so we need to double-check 3513 // a few things. 3514 if (dispatchEntry == connection->findWaitQueueEntry(seq)) { 3515 connection->waitQueue.dequeue(dispatchEntry); 3516 traceWaitQueueLengthLocked(connection); 3517 if (restartEvent && connection->status == Connection::STATUS_NORMAL) { 3518 connection->outboundQueue.enqueueAtHead(dispatchEntry); 3519 traceOutboundQueueLengthLocked(connection); 3520 } else { 3521 releaseDispatchEntryLocked(dispatchEntry); 3522 } 3523 } 3524 3525 // Start the next dispatch cycle for this connection. 3526 startDispatchCycleLocked(now(), connection); 3527 } 3528} 3529 3530bool InputDispatcher::afterKeyEventLockedInterruptible(const sp<Connection>& connection, 3531 DispatchEntry* dispatchEntry, KeyEntry* keyEntry, bool handled) { 3532 if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3533 // Get the fallback key state. 3534 // Clear it out after dispatching the UP. 3535 int32_t originalKeyCode = keyEntry->keyCode; 3536 int32_t fallbackKeyCode = connection->inputState.getFallbackKey(originalKeyCode); 3537 if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 3538 connection->inputState.removeFallbackKey(originalKeyCode); 3539 } 3540 3541 if (handled || !dispatchEntry->hasForegroundTarget()) { 3542 // If the application handles the original key for which we previously 3543 // generated a fallback or if the window is not a foreground window, 3544 // then cancel the associated fallback key, if any. 3545 if (fallbackKeyCode != -1) { 3546 // Dispatch the unhandled key to the policy with the cancel flag. 3547#if DEBUG_OUTBOUND_EVENT_DETAILS 3548 ALOGD("Unhandled key event: Asking policy to cancel fallback action. " 3549 "keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x", 3550 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount, 3551 keyEntry->policyFlags); 3552#endif 3553 KeyEvent event; 3554 initializeKeyEvent(&event, keyEntry); 3555 event.setFlags(event.getFlags() | AKEY_EVENT_FLAG_CANCELED); 3556 3557 mLock.unlock(); 3558 3559 mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3560 &event, keyEntry->policyFlags, &event); 3561 3562 mLock.lock(); 3563 3564 // Cancel the fallback key. 3565 if (fallbackKeyCode != AKEYCODE_UNKNOWN) { 3566 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3567 "application handled the original non-fallback key " 3568 "or is no longer a foreground target, " 3569 "canceling previously dispatched fallback key"); 3570 options.keyCode = fallbackKeyCode; 3571 synthesizeCancelationEventsForConnectionLocked(connection, options); 3572 } 3573 connection->inputState.removeFallbackKey(originalKeyCode); 3574 } 3575 } else { 3576 // If the application did not handle a non-fallback key, first check 3577 // that we are in a good state to perform unhandled key event processing 3578 // Then ask the policy what to do with it. 3579 bool initialDown = keyEntry->action == AKEY_EVENT_ACTION_DOWN 3580 && keyEntry->repeatCount == 0; 3581 if (fallbackKeyCode == -1 && !initialDown) { 3582#if DEBUG_OUTBOUND_EVENT_DETAILS 3583 ALOGD("Unhandled key event: Skipping unhandled key event processing " 3584 "since this is not an initial down. " 3585 "keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x", 3586 originalKeyCode, keyEntry->action, keyEntry->repeatCount, 3587 keyEntry->policyFlags); 3588#endif 3589 return false; 3590 } 3591 3592 // Dispatch the unhandled key to the policy. 3593#if DEBUG_OUTBOUND_EVENT_DETAILS 3594 ALOGD("Unhandled key event: Asking policy to perform fallback action. " 3595 "keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x", 3596 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount, 3597 keyEntry->policyFlags); 3598#endif 3599 KeyEvent event; 3600 initializeKeyEvent(&event, keyEntry); 3601 3602 mLock.unlock(); 3603 3604 bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3605 &event, keyEntry->policyFlags, &event); 3606 3607 mLock.lock(); 3608 3609 if (connection->status != Connection::STATUS_NORMAL) { 3610 connection->inputState.removeFallbackKey(originalKeyCode); 3611 return false; 3612 } 3613 3614 // Latch the fallback keycode for this key on an initial down. 3615 // The fallback keycode cannot change at any other point in the lifecycle. 3616 if (initialDown) { 3617 if (fallback) { 3618 fallbackKeyCode = event.getKeyCode(); 3619 } else { 3620 fallbackKeyCode = AKEYCODE_UNKNOWN; 3621 } 3622 connection->inputState.setFallbackKey(originalKeyCode, fallbackKeyCode); 3623 } 3624 3625 ALOG_ASSERT(fallbackKeyCode != -1); 3626 3627 // Cancel the fallback key if the policy decides not to send it anymore. 3628 // We will continue to dispatch the key to the policy but we will no 3629 // longer dispatch a fallback key to the application. 3630 if (fallbackKeyCode != AKEYCODE_UNKNOWN 3631 && (!fallback || fallbackKeyCode != event.getKeyCode())) { 3632#if DEBUG_OUTBOUND_EVENT_DETAILS 3633 if (fallback) { 3634 ALOGD("Unhandled key event: Policy requested to send key %d" 3635 "as a fallback for %d, but on the DOWN it had requested " 3636 "to send %d instead. Fallback canceled.", 3637 event.getKeyCode(), originalKeyCode, fallbackKeyCode); 3638 } else { 3639 ALOGD("Unhandled key event: Policy did not request fallback for %d, " 3640 "but on the DOWN it had requested to send %d. " 3641 "Fallback canceled.", 3642 originalKeyCode, fallbackKeyCode); 3643 } 3644#endif 3645 3646 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3647 "canceling fallback, policy no longer desires it"); 3648 options.keyCode = fallbackKeyCode; 3649 synthesizeCancelationEventsForConnectionLocked(connection, options); 3650 3651 fallback = false; 3652 fallbackKeyCode = AKEYCODE_UNKNOWN; 3653 if (keyEntry->action != AKEY_EVENT_ACTION_UP) { 3654 connection->inputState.setFallbackKey(originalKeyCode, 3655 fallbackKeyCode); 3656 } 3657 } 3658 3659#if DEBUG_OUTBOUND_EVENT_DETAILS 3660 { 3661 String8 msg; 3662 const KeyedVector<int32_t, int32_t>& fallbackKeys = 3663 connection->inputState.getFallbackKeys(); 3664 for (size_t i = 0; i < fallbackKeys.size(); i++) { 3665 msg.appendFormat(", %d->%d", fallbackKeys.keyAt(i), 3666 fallbackKeys.valueAt(i)); 3667 } 3668 ALOGD("Unhandled key event: %d currently tracked fallback keys%s.", 3669 fallbackKeys.size(), msg.string()); 3670 } 3671#endif 3672 3673 if (fallback) { 3674 // Restart the dispatch cycle using the fallback key. 3675 keyEntry->eventTime = event.getEventTime(); 3676 keyEntry->deviceId = event.getDeviceId(); 3677 keyEntry->source = event.getSource(); 3678 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK; 3679 keyEntry->keyCode = fallbackKeyCode; 3680 keyEntry->scanCode = event.getScanCode(); 3681 keyEntry->metaState = event.getMetaState(); 3682 keyEntry->repeatCount = event.getRepeatCount(); 3683 keyEntry->downTime = event.getDownTime(); 3684 keyEntry->syntheticRepeat = false; 3685 3686#if DEBUG_OUTBOUND_EVENT_DETAILS 3687 ALOGD("Unhandled key event: Dispatching fallback key. " 3688 "originalKeyCode=%d, fallbackKeyCode=%d, fallbackMetaState=%08x", 3689 originalKeyCode, fallbackKeyCode, keyEntry->metaState); 3690#endif 3691 return true; // restart the event 3692 } else { 3693#if DEBUG_OUTBOUND_EVENT_DETAILS 3694 ALOGD("Unhandled key event: No fallback key."); 3695#endif 3696 } 3697 } 3698 } 3699 return false; 3700} 3701 3702bool InputDispatcher::afterMotionEventLockedInterruptible(const sp<Connection>& connection, 3703 DispatchEntry* dispatchEntry, MotionEntry* motionEntry, bool handled) { 3704 return false; 3705} 3706 3707void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) { 3708 mLock.unlock(); 3709 3710 mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType); 3711 3712 mLock.lock(); 3713} 3714 3715void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) { 3716 event->initialize(entry->deviceId, entry->source, entry->action, entry->flags, 3717 entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount, 3718 entry->downTime, entry->eventTime); 3719} 3720 3721void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry, 3722 int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) { 3723 // TODO Write some statistics about how long we spend waiting. 3724} 3725 3726void InputDispatcher::traceInboundQueueLengthLocked() { 3727 if (ATRACE_ENABLED()) { 3728 ATRACE_INT("iq", mInboundQueue.count()); 3729 } 3730} 3731 3732void InputDispatcher::traceOutboundQueueLengthLocked(const sp<Connection>& connection) { 3733 if (ATRACE_ENABLED()) { 3734 char counterName[40]; 3735 snprintf(counterName, sizeof(counterName), "oq:%s", connection->getWindowName()); 3736 ATRACE_INT(counterName, connection->outboundQueue.count()); 3737 } 3738} 3739 3740void InputDispatcher::traceWaitQueueLengthLocked(const sp<Connection>& connection) { 3741 if (ATRACE_ENABLED()) { 3742 char counterName[40]; 3743 snprintf(counterName, sizeof(counterName), "wq:%s", connection->getWindowName()); 3744 ATRACE_INT(counterName, connection->waitQueue.count()); 3745 } 3746} 3747 3748void InputDispatcher::dump(String8& dump) { 3749 AutoMutex _l(mLock); 3750 3751 dump.append("Input Dispatcher State:\n"); 3752 dumpDispatchStateLocked(dump); 3753 3754 if (!mLastANRState.isEmpty()) { 3755 dump.append("\nInput Dispatcher State at time of last ANR:\n"); 3756 dump.append(mLastANRState); 3757 } 3758} 3759 3760void InputDispatcher::monitor() { 3761 // Acquire and release the lock to ensure that the dispatcher has not deadlocked. 3762 mLock.lock(); 3763 mLooper->wake(); 3764 mDispatcherIsAliveCondition.wait(mLock); 3765 mLock.unlock(); 3766} 3767 3768 3769// --- InputDispatcher::Queue --- 3770 3771template <typename T> 3772uint32_t InputDispatcher::Queue<T>::count() const { 3773 uint32_t result = 0; 3774 for (const T* entry = head; entry; entry = entry->next) { 3775 result += 1; 3776 } 3777 return result; 3778} 3779 3780 3781// --- InputDispatcher::InjectionState --- 3782 3783InputDispatcher::InjectionState::InjectionState(int32_t injectorPid, int32_t injectorUid) : 3784 refCount(1), 3785 injectorPid(injectorPid), injectorUid(injectorUid), 3786 injectionResult(INPUT_EVENT_INJECTION_PENDING), injectionIsAsync(false), 3787 pendingForegroundDispatches(0) { 3788} 3789 3790InputDispatcher::InjectionState::~InjectionState() { 3791} 3792 3793void InputDispatcher::InjectionState::release() { 3794 refCount -= 1; 3795 if (refCount == 0) { 3796 delete this; 3797 } else { 3798 ALOG_ASSERT(refCount > 0); 3799 } 3800} 3801 3802 3803// --- InputDispatcher::EventEntry --- 3804 3805InputDispatcher::EventEntry::EventEntry(int32_t type, nsecs_t eventTime, uint32_t policyFlags) : 3806 refCount(1), type(type), eventTime(eventTime), policyFlags(policyFlags), 3807 injectionState(NULL), dispatchInProgress(false) { 3808} 3809 3810InputDispatcher::EventEntry::~EventEntry() { 3811 releaseInjectionState(); 3812} 3813 3814void InputDispatcher::EventEntry::release() { 3815 refCount -= 1; 3816 if (refCount == 0) { 3817 delete this; 3818 } else { 3819 ALOG_ASSERT(refCount > 0); 3820 } 3821} 3822 3823void InputDispatcher::EventEntry::releaseInjectionState() { 3824 if (injectionState) { 3825 injectionState->release(); 3826 injectionState = NULL; 3827 } 3828} 3829 3830 3831// --- InputDispatcher::ConfigurationChangedEntry --- 3832 3833InputDispatcher::ConfigurationChangedEntry::ConfigurationChangedEntry(nsecs_t eventTime) : 3834 EventEntry(TYPE_CONFIGURATION_CHANGED, eventTime, 0) { 3835} 3836 3837InputDispatcher::ConfigurationChangedEntry::~ConfigurationChangedEntry() { 3838} 3839 3840void InputDispatcher::ConfigurationChangedEntry::appendDescription(String8& msg) const { 3841 msg.append("ConfigurationChangedEvent(), policyFlags=0x%08x", 3842 policyFlags); 3843} 3844 3845 3846// --- InputDispatcher::DeviceResetEntry --- 3847 3848InputDispatcher::DeviceResetEntry::DeviceResetEntry(nsecs_t eventTime, int32_t deviceId) : 3849 EventEntry(TYPE_DEVICE_RESET, eventTime, 0), 3850 deviceId(deviceId) { 3851} 3852 3853InputDispatcher::DeviceResetEntry::~DeviceResetEntry() { 3854} 3855 3856void InputDispatcher::DeviceResetEntry::appendDescription(String8& msg) const { 3857 msg.appendFormat("DeviceResetEvent(deviceId=%d), policyFlags=0x%08x", 3858 deviceId, policyFlags); 3859} 3860 3861 3862// --- InputDispatcher::KeyEntry --- 3863 3864InputDispatcher::KeyEntry::KeyEntry(nsecs_t eventTime, 3865 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, 3866 int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState, 3867 int32_t repeatCount, nsecs_t downTime) : 3868 EventEntry(TYPE_KEY, eventTime, policyFlags), 3869 deviceId(deviceId), source(source), action(action), flags(flags), 3870 keyCode(keyCode), scanCode(scanCode), metaState(metaState), 3871 repeatCount(repeatCount), downTime(downTime), 3872 syntheticRepeat(false), interceptKeyResult(KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN), 3873 interceptKeyWakeupTime(0) { 3874} 3875 3876InputDispatcher::KeyEntry::~KeyEntry() { 3877} 3878 3879void InputDispatcher::KeyEntry::appendDescription(String8& msg) const { 3880 msg.appendFormat("KeyEvent(deviceId=%d, source=0x%08x, action=%d, " 3881 "flags=0x%08x, keyCode=%d, scanCode=%d, metaState=0x%08x, " 3882 "repeatCount=%d), policyFlags=0x%08x", 3883 deviceId, source, action, flags, keyCode, scanCode, metaState, 3884 repeatCount, policyFlags); 3885} 3886 3887void InputDispatcher::KeyEntry::recycle() { 3888 releaseInjectionState(); 3889 3890 dispatchInProgress = false; 3891 syntheticRepeat = false; 3892 interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3893 interceptKeyWakeupTime = 0; 3894} 3895 3896 3897// --- InputDispatcher::MotionEntry --- 3898 3899InputDispatcher::MotionEntry::MotionEntry(nsecs_t eventTime, 3900 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags, 3901 int32_t metaState, int32_t buttonState, 3902 int32_t edgeFlags, float xPrecision, float yPrecision, 3903 nsecs_t downTime, int32_t displayId, uint32_t pointerCount, 3904 const PointerProperties* pointerProperties, const PointerCoords* pointerCoords, 3905 float xOffset, float yOffset) : 3906 EventEntry(TYPE_MOTION, eventTime, policyFlags), 3907 eventTime(eventTime), 3908 deviceId(deviceId), source(source), action(action), flags(flags), 3909 metaState(metaState), buttonState(buttonState), edgeFlags(edgeFlags), 3910 xPrecision(xPrecision), yPrecision(yPrecision), 3911 downTime(downTime), displayId(displayId), pointerCount(pointerCount) { 3912 for (uint32_t i = 0; i < pointerCount; i++) { 3913 this->pointerProperties[i].copyFrom(pointerProperties[i]); 3914 this->pointerCoords[i].copyFrom(pointerCoords[i]); 3915 if (xOffset || yOffset) { 3916 this->pointerCoords[i].applyOffset(xOffset, yOffset); 3917 } 3918 } 3919} 3920 3921InputDispatcher::MotionEntry::~MotionEntry() { 3922} 3923 3924void InputDispatcher::MotionEntry::appendDescription(String8& msg) const { 3925 msg.appendFormat("MotionEvent(deviceId=%d, source=0x%08x, action=%d, " 3926 "flags=0x%08x, metaState=0x%08x, buttonState=0x%08x, edgeFlags=0x%08x, " 3927 "xPrecision=%.1f, yPrecision=%.1f, displayId=%d, pointers=[", 3928 deviceId, source, action, flags, metaState, buttonState, edgeFlags, 3929 xPrecision, yPrecision, displayId); 3930 for (uint32_t i = 0; i < pointerCount; i++) { 3931 if (i) { 3932 msg.append(", "); 3933 } 3934 msg.appendFormat("%d: (%.1f, %.1f)", pointerProperties[i].id, 3935 pointerCoords[i].getX(), pointerCoords[i].getY()); 3936 } 3937 msg.appendFormat("]), policyFlags=0x%08x", policyFlags); 3938} 3939 3940 3941// --- InputDispatcher::DispatchEntry --- 3942 3943volatile int32_t InputDispatcher::DispatchEntry::sNextSeqAtomic; 3944 3945InputDispatcher::DispatchEntry::DispatchEntry(EventEntry* eventEntry, 3946 int32_t targetFlags, float xOffset, float yOffset, float scaleFactor) : 3947 seq(nextSeq()), 3948 eventEntry(eventEntry), targetFlags(targetFlags), 3949 xOffset(xOffset), yOffset(yOffset), scaleFactor(scaleFactor), 3950 deliveryTime(0), resolvedAction(0), resolvedFlags(0) { 3951 eventEntry->refCount += 1; 3952} 3953 3954InputDispatcher::DispatchEntry::~DispatchEntry() { 3955 eventEntry->release(); 3956} 3957 3958uint32_t InputDispatcher::DispatchEntry::nextSeq() { 3959 // Sequence number 0 is reserved and will never be returned. 3960 uint32_t seq; 3961 do { 3962 seq = android_atomic_inc(&sNextSeqAtomic); 3963 } while (!seq); 3964 return seq; 3965} 3966 3967 3968// --- InputDispatcher::InputState --- 3969 3970InputDispatcher::InputState::InputState() { 3971} 3972 3973InputDispatcher::InputState::~InputState() { 3974} 3975 3976bool InputDispatcher::InputState::isNeutral() const { 3977 return mKeyMementos.isEmpty() && mMotionMementos.isEmpty(); 3978} 3979 3980bool InputDispatcher::InputState::isHovering(int32_t deviceId, uint32_t source, 3981 int32_t displayId) const { 3982 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3983 const MotionMemento& memento = mMotionMementos.itemAt(i); 3984 if (memento.deviceId == deviceId 3985 && memento.source == source 3986 && memento.displayId == displayId 3987 && memento.hovering) { 3988 return true; 3989 } 3990 } 3991 return false; 3992} 3993 3994bool InputDispatcher::InputState::trackKey(const KeyEntry* entry, 3995 int32_t action, int32_t flags) { 3996 switch (action) { 3997 case AKEY_EVENT_ACTION_UP: { 3998 if (entry->flags & AKEY_EVENT_FLAG_FALLBACK) { 3999 for (size_t i = 0; i < mFallbackKeys.size(); ) { 4000 if (mFallbackKeys.valueAt(i) == entry->keyCode) { 4001 mFallbackKeys.removeItemsAt(i); 4002 } else { 4003 i += 1; 4004 } 4005 } 4006 } 4007 ssize_t index = findKeyMemento(entry); 4008 if (index >= 0) { 4009 mKeyMementos.removeAt(index); 4010 return true; 4011 } 4012 /* FIXME: We can't just drop the key up event because that prevents creating 4013 * popup windows that are automatically shown when a key is held and then 4014 * dismissed when the key is released. The problem is that the popup will 4015 * not have received the original key down, so the key up will be considered 4016 * to be inconsistent with its observed state. We could perhaps handle this 4017 * by synthesizing a key down but that will cause other problems. 4018 * 4019 * So for now, allow inconsistent key up events to be dispatched. 4020 * 4021#if DEBUG_OUTBOUND_EVENT_DETAILS 4022 ALOGD("Dropping inconsistent key up event: deviceId=%d, source=%08x, " 4023 "keyCode=%d, scanCode=%d", 4024 entry->deviceId, entry->source, entry->keyCode, entry->scanCode); 4025#endif 4026 return false; 4027 */ 4028 return true; 4029 } 4030 4031 case AKEY_EVENT_ACTION_DOWN: { 4032 ssize_t index = findKeyMemento(entry); 4033 if (index >= 0) { 4034 mKeyMementos.removeAt(index); 4035 } 4036 addKeyMemento(entry, flags); 4037 return true; 4038 } 4039 4040 default: 4041 return true; 4042 } 4043} 4044 4045bool InputDispatcher::InputState::trackMotion(const MotionEntry* entry, 4046 int32_t action, int32_t flags) { 4047 int32_t actionMasked = action & AMOTION_EVENT_ACTION_MASK; 4048 switch (actionMasked) { 4049 case AMOTION_EVENT_ACTION_UP: 4050 case AMOTION_EVENT_ACTION_CANCEL: { 4051 ssize_t index = findMotionMemento(entry, false /*hovering*/); 4052 if (index >= 0) { 4053 mMotionMementos.removeAt(index); 4054 return true; 4055 } 4056#if DEBUG_OUTBOUND_EVENT_DETAILS 4057 ALOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, " 4058 "actionMasked=%d", 4059 entry->deviceId, entry->source, actionMasked); 4060#endif 4061 return false; 4062 } 4063 4064 case AMOTION_EVENT_ACTION_DOWN: { 4065 ssize_t index = findMotionMemento(entry, false /*hovering*/); 4066 if (index >= 0) { 4067 mMotionMementos.removeAt(index); 4068 } 4069 addMotionMemento(entry, flags, false /*hovering*/); 4070 return true; 4071 } 4072 4073 case AMOTION_EVENT_ACTION_POINTER_UP: 4074 case AMOTION_EVENT_ACTION_POINTER_DOWN: 4075 case AMOTION_EVENT_ACTION_MOVE: { 4076 if (entry->source & AINPUT_SOURCE_CLASS_NAVIGATION) { 4077 // Trackballs can send MOVE events with a corresponding DOWN or UP. There's no need to 4078 // generate cancellation events for these since they're based in relative rather than 4079 // absolute units. 4080 return true; 4081 } 4082 4083 ssize_t index = findMotionMemento(entry, false /*hovering*/); 4084 4085 if (entry->source & AINPUT_SOURCE_CLASS_JOYSTICK) { 4086 // Joysticks can send MOVE events without a corresponding DOWN or UP. Since all 4087 // joystick axes are normalized to [-1, 1] we can trust that 0 means it's neutral. Any 4088 // other value and we need to track the motion so we can send cancellation events for 4089 // anything generating fallback events (e.g. DPad keys for joystick movements). 4090 if (index >= 0) { 4091 if (entry->pointerCoords[0].isEmpty()) { 4092 mMotionMementos.removeAt(index); 4093 } else { 4094 MotionMemento& memento = mMotionMementos.editItemAt(index); 4095 memento.setPointers(entry); 4096 } 4097 } else if (!entry->pointerCoords[0].isEmpty()) { 4098 addMotionMemento(entry, flags, false /*hovering*/); 4099 } 4100 4101 // Joysticks and trackballs can send MOVE events without corresponding DOWN or UP. 4102 return true; 4103 } 4104 if (index >= 0) { 4105 MotionMemento& memento = mMotionMementos.editItemAt(index); 4106 memento.setPointers(entry); 4107 return true; 4108 } 4109#if DEBUG_OUTBOUND_EVENT_DETAILS 4110 ALOGD("Dropping inconsistent motion pointer up/down or move event: " 4111 "deviceId=%d, source=%08x, actionMasked=%d", 4112 entry->deviceId, entry->source, actionMasked); 4113#endif 4114 return false; 4115 } 4116 4117 case AMOTION_EVENT_ACTION_HOVER_EXIT: { 4118 ssize_t index = findMotionMemento(entry, true /*hovering*/); 4119 if (index >= 0) { 4120 mMotionMementos.removeAt(index); 4121 return true; 4122 } 4123#if DEBUG_OUTBOUND_EVENT_DETAILS 4124 ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x", 4125 entry->deviceId, entry->source); 4126#endif 4127 return false; 4128 } 4129 4130 case AMOTION_EVENT_ACTION_HOVER_ENTER: 4131 case AMOTION_EVENT_ACTION_HOVER_MOVE: { 4132 ssize_t index = findMotionMemento(entry, true /*hovering*/); 4133 if (index >= 0) { 4134 mMotionMementos.removeAt(index); 4135 } 4136 addMotionMemento(entry, flags, true /*hovering*/); 4137 return true; 4138 } 4139 4140 default: 4141 return true; 4142 } 4143} 4144 4145ssize_t InputDispatcher::InputState::findKeyMemento(const KeyEntry* entry) const { 4146 for (size_t i = 0; i < mKeyMementos.size(); i++) { 4147 const KeyMemento& memento = mKeyMementos.itemAt(i); 4148 if (memento.deviceId == entry->deviceId 4149 && memento.source == entry->source 4150 && memento.keyCode == entry->keyCode 4151 && memento.scanCode == entry->scanCode) { 4152 return i; 4153 } 4154 } 4155 return -1; 4156} 4157 4158ssize_t InputDispatcher::InputState::findMotionMemento(const MotionEntry* entry, 4159 bool hovering) const { 4160 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4161 const MotionMemento& memento = mMotionMementos.itemAt(i); 4162 if (memento.deviceId == entry->deviceId 4163 && memento.source == entry->source 4164 && memento.displayId == entry->displayId 4165 && memento.hovering == hovering) { 4166 return i; 4167 } 4168 } 4169 return -1; 4170} 4171 4172void InputDispatcher::InputState::addKeyMemento(const KeyEntry* entry, int32_t flags) { 4173 mKeyMementos.push(); 4174 KeyMemento& memento = mKeyMementos.editTop(); 4175 memento.deviceId = entry->deviceId; 4176 memento.source = entry->source; 4177 memento.keyCode = entry->keyCode; 4178 memento.scanCode = entry->scanCode; 4179 memento.metaState = entry->metaState; 4180 memento.flags = flags; 4181 memento.downTime = entry->downTime; 4182 memento.policyFlags = entry->policyFlags; 4183} 4184 4185void InputDispatcher::InputState::addMotionMemento(const MotionEntry* entry, 4186 int32_t flags, bool hovering) { 4187 mMotionMementos.push(); 4188 MotionMemento& memento = mMotionMementos.editTop(); 4189 memento.deviceId = entry->deviceId; 4190 memento.source = entry->source; 4191 memento.flags = flags; 4192 memento.xPrecision = entry->xPrecision; 4193 memento.yPrecision = entry->yPrecision; 4194 memento.downTime = entry->downTime; 4195 memento.displayId = entry->displayId; 4196 memento.setPointers(entry); 4197 memento.hovering = hovering; 4198 memento.policyFlags = entry->policyFlags; 4199} 4200 4201void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) { 4202 pointerCount = entry->pointerCount; 4203 for (uint32_t i = 0; i < entry->pointerCount; i++) { 4204 pointerProperties[i].copyFrom(entry->pointerProperties[i]); 4205 pointerCoords[i].copyFrom(entry->pointerCoords[i]); 4206 } 4207} 4208 4209void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime, 4210 Vector<EventEntry*>& outEvents, const CancelationOptions& options) { 4211 for (size_t i = 0; i < mKeyMementos.size(); i++) { 4212 const KeyMemento& memento = mKeyMementos.itemAt(i); 4213 if (shouldCancelKey(memento, options)) { 4214 outEvents.push(new KeyEntry(currentTime, 4215 memento.deviceId, memento.source, memento.policyFlags, 4216 AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED, 4217 memento.keyCode, memento.scanCode, memento.metaState, 0, memento.downTime)); 4218 } 4219 } 4220 4221 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4222 const MotionMemento& memento = mMotionMementos.itemAt(i); 4223 if (shouldCancelMotion(memento, options)) { 4224 outEvents.push(new MotionEntry(currentTime, 4225 memento.deviceId, memento.source, memento.policyFlags, 4226 memento.hovering 4227 ? AMOTION_EVENT_ACTION_HOVER_EXIT 4228 : AMOTION_EVENT_ACTION_CANCEL, 4229 memento.flags, 0, 0, 0, 4230 memento.xPrecision, memento.yPrecision, memento.downTime, 4231 memento.displayId, 4232 memento.pointerCount, memento.pointerProperties, memento.pointerCoords, 4233 0, 0)); 4234 } 4235 } 4236} 4237 4238void InputDispatcher::InputState::clear() { 4239 mKeyMementos.clear(); 4240 mMotionMementos.clear(); 4241 mFallbackKeys.clear(); 4242} 4243 4244void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const { 4245 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4246 const MotionMemento& memento = mMotionMementos.itemAt(i); 4247 if (memento.source & AINPUT_SOURCE_CLASS_POINTER) { 4248 for (size_t j = 0; j < other.mMotionMementos.size(); ) { 4249 const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j); 4250 if (memento.deviceId == otherMemento.deviceId 4251 && memento.source == otherMemento.source 4252 && memento.displayId == otherMemento.displayId) { 4253 other.mMotionMementos.removeAt(j); 4254 } else { 4255 j += 1; 4256 } 4257 } 4258 other.mMotionMementos.push(memento); 4259 } 4260 } 4261} 4262 4263int32_t InputDispatcher::InputState::getFallbackKey(int32_t originalKeyCode) { 4264 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4265 return index >= 0 ? mFallbackKeys.valueAt(index) : -1; 4266} 4267 4268void InputDispatcher::InputState::setFallbackKey(int32_t originalKeyCode, 4269 int32_t fallbackKeyCode) { 4270 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4271 if (index >= 0) { 4272 mFallbackKeys.replaceValueAt(index, fallbackKeyCode); 4273 } else { 4274 mFallbackKeys.add(originalKeyCode, fallbackKeyCode); 4275 } 4276} 4277 4278void InputDispatcher::InputState::removeFallbackKey(int32_t originalKeyCode) { 4279 mFallbackKeys.removeItem(originalKeyCode); 4280} 4281 4282bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento, 4283 const CancelationOptions& options) { 4284 if (options.keyCode != -1 && memento.keyCode != options.keyCode) { 4285 return false; 4286 } 4287 4288 if (options.deviceId != -1 && memento.deviceId != options.deviceId) { 4289 return false; 4290 } 4291 4292 switch (options.mode) { 4293 case CancelationOptions::CANCEL_ALL_EVENTS: 4294 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4295 return true; 4296 case CancelationOptions::CANCEL_FALLBACK_EVENTS: 4297 return memento.flags & AKEY_EVENT_FLAG_FALLBACK; 4298 default: 4299 return false; 4300 } 4301} 4302 4303bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento, 4304 const CancelationOptions& options) { 4305 if (options.deviceId != -1 && memento.deviceId != options.deviceId) { 4306 return false; 4307 } 4308 4309 switch (options.mode) { 4310 case CancelationOptions::CANCEL_ALL_EVENTS: 4311 return true; 4312 case CancelationOptions::CANCEL_POINTER_EVENTS: 4313 return memento.source & AINPUT_SOURCE_CLASS_POINTER; 4314 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4315 return !(memento.source & AINPUT_SOURCE_CLASS_POINTER); 4316 default: 4317 return false; 4318 } 4319} 4320 4321 4322// --- InputDispatcher::Connection --- 4323 4324InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel, 4325 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) : 4326 status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle), 4327 monitor(monitor), 4328 inputPublisher(inputChannel), inputPublisherBlocked(false) { 4329} 4330 4331InputDispatcher::Connection::~Connection() { 4332} 4333 4334const char* InputDispatcher::Connection::getWindowName() const { 4335 if (inputWindowHandle != NULL) { 4336 return inputWindowHandle->getName().string(); 4337 } 4338 if (monitor) { 4339 return "monitor"; 4340 } 4341 return "?"; 4342} 4343 4344const char* InputDispatcher::Connection::getStatusLabel() const { 4345 switch (status) { 4346 case STATUS_NORMAL: 4347 return "NORMAL"; 4348 4349 case STATUS_BROKEN: 4350 return "BROKEN"; 4351 4352 case STATUS_ZOMBIE: 4353 return "ZOMBIE"; 4354 4355 default: 4356 return "UNKNOWN"; 4357 } 4358} 4359 4360InputDispatcher::DispatchEntry* InputDispatcher::Connection::findWaitQueueEntry(uint32_t seq) { 4361 for (DispatchEntry* entry = waitQueue.head; entry != NULL; entry = entry->next) { 4362 if (entry->seq == seq) { 4363 return entry; 4364 } 4365 } 4366 return NULL; 4367} 4368 4369 4370// --- InputDispatcher::CommandEntry --- 4371 4372InputDispatcher::CommandEntry::CommandEntry(Command command) : 4373 command(command), eventTime(0), keyEntry(NULL), userActivityEventType(0), 4374 seq(0), handled(false) { 4375} 4376 4377InputDispatcher::CommandEntry::~CommandEntry() { 4378} 4379 4380 4381// --- InputDispatcher::TouchState --- 4382 4383InputDispatcher::TouchState::TouchState() : 4384 down(false), split(false), deviceId(-1), source(0), displayId(-1) { 4385} 4386 4387InputDispatcher::TouchState::~TouchState() { 4388} 4389 4390void InputDispatcher::TouchState::reset() { 4391 down = false; 4392 split = false; 4393 deviceId = -1; 4394 source = 0; 4395 displayId = -1; 4396 windows.clear(); 4397} 4398 4399void InputDispatcher::TouchState::copyFrom(const TouchState& other) { 4400 down = other.down; 4401 split = other.split; 4402 deviceId = other.deviceId; 4403 source = other.source; 4404 displayId = other.displayId; 4405 windows = other.windows; 4406} 4407 4408void InputDispatcher::TouchState::addOrUpdateWindow(const sp<InputWindowHandle>& windowHandle, 4409 int32_t targetFlags, BitSet32 pointerIds) { 4410 if (targetFlags & InputTarget::FLAG_SPLIT) { 4411 split = true; 4412 } 4413 4414 for (size_t i = 0; i < windows.size(); i++) { 4415 TouchedWindow& touchedWindow = windows.editItemAt(i); 4416 if (touchedWindow.windowHandle == windowHandle) { 4417 touchedWindow.targetFlags |= targetFlags; 4418 if (targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) { 4419 touchedWindow.targetFlags &= ~InputTarget::FLAG_DISPATCH_AS_IS; 4420 } 4421 touchedWindow.pointerIds.value |= pointerIds.value; 4422 return; 4423 } 4424 } 4425 4426 windows.push(); 4427 4428 TouchedWindow& touchedWindow = windows.editTop(); 4429 touchedWindow.windowHandle = windowHandle; 4430 touchedWindow.targetFlags = targetFlags; 4431 touchedWindow.pointerIds = pointerIds; 4432} 4433 4434void InputDispatcher::TouchState::removeWindow(const sp<InputWindowHandle>& windowHandle) { 4435 for (size_t i = 0; i < windows.size(); i++) { 4436 if (windows.itemAt(i).windowHandle == windowHandle) { 4437 windows.removeAt(i); 4438 return; 4439 } 4440 } 4441} 4442 4443void InputDispatcher::TouchState::filterNonAsIsTouchWindows() { 4444 for (size_t i = 0 ; i < windows.size(); ) { 4445 TouchedWindow& window = windows.editItemAt(i); 4446 if (window.targetFlags & (InputTarget::FLAG_DISPATCH_AS_IS 4447 | InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER)) { 4448 window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK; 4449 window.targetFlags |= InputTarget::FLAG_DISPATCH_AS_IS; 4450 i += 1; 4451 } else { 4452 windows.removeAt(i); 4453 } 4454 } 4455} 4456 4457sp<InputWindowHandle> InputDispatcher::TouchState::getFirstForegroundWindowHandle() const { 4458 for (size_t i = 0; i < windows.size(); i++) { 4459 const TouchedWindow& window = windows.itemAt(i); 4460 if (window.targetFlags & InputTarget::FLAG_FOREGROUND) { 4461 return window.windowHandle; 4462 } 4463 } 4464 return NULL; 4465} 4466 4467bool InputDispatcher::TouchState::isSlippery() const { 4468 // Must have exactly one foreground window. 4469 bool haveSlipperyForegroundWindow = false; 4470 for (size_t i = 0; i < windows.size(); i++) { 4471 const TouchedWindow& window = windows.itemAt(i); 4472 if (window.targetFlags & InputTarget::FLAG_FOREGROUND) { 4473 if (haveSlipperyForegroundWindow 4474 || !(window.windowHandle->getInfo()->layoutParamsFlags 4475 & InputWindowInfo::FLAG_SLIPPERY)) { 4476 return false; 4477 } 4478 haveSlipperyForegroundWindow = true; 4479 } 4480 } 4481 return haveSlipperyForegroundWindow; 4482} 4483 4484 4485// --- InputDispatcherThread --- 4486 4487InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) : 4488 Thread(/*canCallJava*/ true), mDispatcher(dispatcher) { 4489} 4490 4491InputDispatcherThread::~InputDispatcherThread() { 4492} 4493 4494bool InputDispatcherThread::threadLoop() { 4495 mDispatcher->dispatchOnce(); 4496 return true; 4497} 4498 4499} // namespace android 4500