IPCThreadState.h revision 376b822728c582a9deb26ce339deb5204ae4d22e
1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright (C) 2005 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * you may not use this file except in compliance with the License. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * See the License for the specific language governing permissions and 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#ifndef ANDROID_IPC_THREAD_STATE_H 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#define ANDROID_IPC_THREAD_STATE_H 19edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/Errors.h> 21c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/Parcel.h> 22c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/ProcessState.h> 23edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/Vector.h> 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 250dd549aae06150421e95f2887773de09e801199eYabin Cui#if defined(_WIN32) 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projecttypedef int uid_t; 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#endif 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass IPCThreadState 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project static IPCThreadState* self(); 361b6084354710ca52c04ea361d751d19174802d57Brad Fitzpatrick static IPCThreadState* selfOrNull(); // self(), but won't instantiate 37edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<ProcessState> process(); 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t clearLastError(); 41edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 429c634fd2d13722106d475b000b05babcce1f65beDan Stoza pid_t getCallingPid() const; 439c634fd2d13722106d475b000b05babcce1f65beDan Stoza uid_t getCallingUid() const; 44702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick 45702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick void setStrictModePolicy(int32_t policy); 46702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick int32_t getStrictModePolicy() const; 475273603e98d2db3bac656b7bcf5352c04c86d62fBrad Fitzpatrick 485273603e98d2db3bac656b7bcf5352c04c86d62fBrad Fitzpatrick void setLastTransactionBinderFlags(int32_t flags); 495273603e98d2db3bac656b7bcf5352c04c86d62fBrad Fitzpatrick int32_t getLastTransactionBinderFlags() const; 505273603e98d2db3bac656b7bcf5352c04c86d62fBrad Fitzpatrick 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int64_t clearCallingIdentity(); 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void restoreCallingIdentity(int64_t token); 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 548d96cab8bfc1b40a8e05c6f43b485750a5ae0a52Todd Poynor int setupPolling(int* fd); 558d96cab8bfc1b40a8e05c6f43b485750a5ae0a52Todd Poynor status_t handlePolledCommands(); 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void flushCommands(); 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void joinThreadPool(bool isMain = true); 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Stop the local process. 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void stopProcess(bool immediate = true); 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t transact(int32_t handle, 64edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project uint32_t code, const Parcel& data, 65edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel* reply, uint32_t flags); 66edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 67edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void incStrongHandle(int32_t handle); 68edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void decStrongHandle(int32_t handle); 69edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void incWeakHandle(int32_t handle); 70edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void decWeakHandle(int32_t handle); 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t attemptIncStrongHandle(int32_t handle); 72edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project static void expungeHandle(int32_t handle, IBinder* binder); 73edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t requestDeathNotification( int32_t handle, 74edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project BpBinder* proxy); 75edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t clearDeathNotification( int32_t handle, 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project BpBinder* proxy); 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project static void shutdown(); 79376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 808c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn // Call this to disable switching threads to background scheduling when 818c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn // receiving incoming IPC calls. This is specifically here for the 828c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn // Android system process, since it expects to have background apps calling 838c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn // in to it but doesn't want to acquire locks in its services while in 848c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn // the background. 858c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn static void disableBackgroundScheduling(bool disable); 86376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 87376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale // Call blocks until the number of executing binder threads is less than 88376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale // the maximum number of binder threads threads allowed for this process. 89376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale void blockUntilThreadAvailable(); 90376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 91edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectprivate: 92edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IPCThreadState(); 93edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ~IPCThreadState(); 94edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 95edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t sendReply(const Parcel& reply, uint32_t flags); 96edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t waitForResponse(Parcel *reply, 97edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t *acquireResult=NULL); 98edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t talkWithDriver(bool doReceive=true); 99edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t writeTransactionData(int32_t cmd, 100edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project uint32_t binderFlags, 101edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int32_t handle, 102edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project uint32_t code, 103edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const Parcel& data, 104edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t* statusBuffer); 1058d96cab8bfc1b40a8e05c6f43b485750a5ae0a52Todd Poynor status_t getAndExecuteCommand(); 106edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t executeCommand(int32_t command); 1078d96cab8bfc1b40a8e05c6f43b485750a5ae0a52Todd Poynor void processPendingDerefs(); 108376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 109edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void clearCaller(); 110376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 111edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project static void threadDestructor(void *st); 112edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project static void freeBuffer(Parcel* parcel, 113edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const uint8_t* data, size_t dataSize, 11484e625ac1e01f5a9c3ed16664da6498212ed662bArve Hjønnevåg const binder_size_t* objects, size_t objectsSize, 115edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project void* cookie); 116edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 117edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project const sp<ProcessState> mProcess; 1188c6cedc9bc9a4b69616a79a95449f6f6b08c7bf1Dianne Hackborn const pid_t mMyThreadId; 119edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Vector<BBinder*> mPendingStrongDerefs; 120edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Vector<RefBase::weakref_type*> mPendingWeakDerefs; 121376b822728c582a9deb26ce339deb5204ae4d22eWale Ogunwale 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel mIn; 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel mOut; 124edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t mLastError; 125edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project pid_t mCallingPid; 126edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project uid_t mCallingUid; 127702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick int32_t mStrictModePolicy; 1285273603e98d2db3bac656b7bcf5352c04c86d62fBrad Fitzpatrick int32_t mLastTransactionBinderFlags; 129edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 130702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick 131edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 132edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 133edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 134edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 135edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#endif // ANDROID_IPC_THREAD_STATE_H 136