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89 lines
2.5 KiB
89 lines
2.5 KiB
/*
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* Copyright 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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#include <gui/FenceMonitor.h>
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#include <gui/TraceUtils.h>
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#include <log/log.h>
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#include <thread>
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namespace android::gui {
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FenceMonitor::FenceMonitor(const char* name) : mName(name), mFencesQueued(0), mFencesSignaled(0) {
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std::thread thread(&FenceMonitor::loop, this);
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pthread_setname_np(thread.native_handle(), mName);
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thread.detach();
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}
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void FenceMonitor::queueFence(const sp<Fence>& fence) {
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char message[64];
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std::lock_guard<std::mutex> lock(mMutex);
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if (fence->getSignalTime() != Fence::SIGNAL_TIME_PENDING) {
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snprintf(message, sizeof(message), "%s fence %u has signaled", mName, mFencesQueued);
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ATRACE_NAME(message);
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// Need an increment on both to make the trace number correct.
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mFencesQueued++;
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mFencesSignaled++;
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return;
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}
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snprintf(message, sizeof(message), "Trace %s fence %u", mName, mFencesQueued);
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ATRACE_NAME(message);
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mQueue.push_back(fence);
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mCondition.notify_one();
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mFencesQueued++;
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ATRACE_INT(mName, int32_t(mQueue.size()));
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}
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void FenceMonitor::loop() {
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while (true) {
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threadLoop();
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}
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}
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void FenceMonitor::threadLoop() {
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sp<Fence> fence;
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uint32_t fenceNum;
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{
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std::unique_lock<std::mutex> lock(mMutex);
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while (mQueue.empty()) {
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mCondition.wait(lock);
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}
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fence = mQueue[0];
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fenceNum = mFencesSignaled;
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}
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{
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char message[64];
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snprintf(message, sizeof(message), "waiting for %s %u", mName, fenceNum);
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ATRACE_NAME(message);
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status_t result = fence->waitForever(message);
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if (result != OK) {
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ALOGE("Error waiting for fence: %d", result);
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}
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}
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{
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std::lock_guard<std::mutex> lock(mMutex);
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mQueue.pop_front();
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mFencesSignaled++;
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ATRACE_INT(mName, int32_t(mQueue.size()));
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}
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}
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} // namespace android::gui
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