1f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis/* 2f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * Copyright (C) 2012 The Android Open Source Project 3f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * 4f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * Licensed under the Apache License, Version 2.0 (the "License"); 5f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * you may not use this file except in compliance with the License. 6f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * You may obtain a copy of the License at 7f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * 8f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * http://www.apache.org/licenses/LICENSE-2.0 9f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * 10f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * Unless required by applicable law or agreed to in writing, software 11f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * distributed under the License is distributed on an "AS IS" BASIS, 12f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * See the License for the specific language governing permissions and 14f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis * limitations under the License. 15f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis */ 16f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 17f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#define LOG_TAG "Fence" 18f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#define ATRACE_TAG ATRACE_TAG_GRAPHICS 19f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis//#define LOG_NDEBUG 0 20f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 21f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#include <sync/sync.h> 22f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#include <ui/Fence.h> 23f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#include <unistd.h> 24f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#include <utils/Log.h> 25f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis#include <utils/Trace.h> 26f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 27f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennisnamespace android { 28f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 29ef19414bd8b77a26f5751f3845be79025a8263feJesse Hallconst sp<Fence> Fence::NO_FENCE = sp<Fence>(); 30ef19414bd8b77a26f5751f3845be79025a8263feJesse Hall 31f25e183a70bd631f75dce51e85b7d568472a0cdbJamie GennisFence::Fence() : 32f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis mFenceFd(-1) { 33f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 34f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 35f25e183a70bd631f75dce51e85b7d568472a0cdbJamie GennisFence::Fence(int fenceFd) : 36f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis mFenceFd(fenceFd) { 37f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 38f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 39f25e183a70bd631f75dce51e85b7d568472a0cdbJamie GennisFence::~Fence() { 40f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis if (mFenceFd != -1) { 41f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis close(mFenceFd); 42f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis } 43f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 44f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 45b5c9dcdf3bdab1862047060b8e18c9d1831db8bbMathias Agopianstatus_t Fence::wait(unsigned int timeout) { 46f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis ATRACE_CALL(); 47f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis if (mFenceFd == -1) { 48f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return NO_ERROR; 49f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis } 50b5c9dcdf3bdab1862047060b8e18c9d1831db8bbMathias Agopian int err = sync_wait(mFenceFd, timeout); 51b5c9dcdf3bdab1862047060b8e18c9d1831db8bbMathias Agopian return err < 0 ? -errno : status_t(NO_ERROR); 52f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 53f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 54b5c9dcdf3bdab1862047060b8e18c9d1831db8bbMathias Agopianstatus_t Fence::waitForever(unsigned int warningTimeout, const char* logname) { 55ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall ATRACE_CALL(); 56ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall if (mFenceFd == -1) { 57ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall return NO_ERROR; 58ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall } 59ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall int err = sync_wait(mFenceFd, warningTimeout); 60b5c9dcdf3bdab1862047060b8e18c9d1831db8bbMathias Agopian if (err < 0 && errno == ETIME) { 61ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall ALOGE("%s: fence %d didn't signal in %u ms", logname, mFenceFd, 62ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall warningTimeout); 63ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall err = sync_wait(mFenceFd, TIMEOUT_NEVER); 64ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall } 65b5c9dcdf3bdab1862047060b8e18c9d1831db8bbMathias Agopian return err < 0 ? -errno : status_t(NO_ERROR); 66ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall} 67ba607d53c6a94ea8c4c12571980c4ad159af308bJesse Hall 68f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennissp<Fence> Fence::merge(const String8& name, const sp<Fence>& f1, 69f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis const sp<Fence>& f2) { 70f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis ATRACE_CALL(); 71f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis int result = sync_merge(name.string(), f1->mFenceFd, f2->mFenceFd); 72f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis if (result == -1) { 73d83d67b5d5e98b7f0bdf54b68f6ea28fa4905a33Mathias Agopian status_t err = -errno; 74d83d67b5d5e98b7f0bdf54b68f6ea28fa4905a33Mathias Agopian ALOGE("merge: sync_merge(\"%s\", %d, %d) returned an error: %s (%d)", 75d83d67b5d5e98b7f0bdf54b68f6ea28fa4905a33Mathias Agopian name.string(), f1->mFenceFd, f2->mFenceFd, 76d83d67b5d5e98b7f0bdf54b68f6ea28fa4905a33Mathias Agopian strerror(-err), err); 77ef19414bd8b77a26f5751f3845be79025a8263feJesse Hall return NO_FENCE; 78f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis } 79f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return sp<Fence>(new Fence(result)); 80f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 81f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 82f9783af225aa3b41ec0af36f90941a714269abb7Jesse Hallint Fence::dup() const { 83c777b0b3b9b0ea5d8e378fccde6935765e28e329Jesse Hall if (mFenceFd == -1) { 84c777b0b3b9b0ea5d8e378fccde6935765e28e329Jesse Hall return -1; 85c777b0b3b9b0ea5d8e378fccde6935765e28e329Jesse Hall } 86f9783af225aa3b41ec0af36f90941a714269abb7Jesse Hall return ::dup(mFenceFd); 87f9783af225aa3b41ec0af36f90941a714269abb7Jesse Hall} 88f9783af225aa3b41ec0af36f90941a714269abb7Jesse Hall 89f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennissize_t Fence::getFlattenedSize() const { 90f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return 0; 91f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 92f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 93f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennissize_t Fence::getFdCount() const { 94f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return 1; 95f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 96f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 97f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennisstatus_t Fence::flatten(void* buffer, size_t size, int fds[], 98f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis size_t count) const { 99f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis if (size != 0 || count != 1) { 100f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return BAD_VALUE; 101f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis } 102f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 103f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis fds[0] = mFenceFd; 104f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return NO_ERROR; 105f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 106f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 107f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennisstatus_t Fence::unflatten(void const* buffer, size_t size, int fds[], 108f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis size_t count) { 109f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis if (size != 0 || count != 1) { 110f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return BAD_VALUE; 111f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis } 112f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis if (mFenceFd != -1) { 113f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis // Don't unflatten if we already have a valid fd. 114f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return INVALID_OPERATION; 115f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis } 116f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 117f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis mFenceFd = fds[0]; 118f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis return NO_ERROR; 119f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} 120f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis 121f25e183a70bd631f75dce51e85b7d568472a0cdbJamie Gennis} // namespace android 122