83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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* Copyright (C) 2013 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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// TODO(b/129481165): remove the #pragma below and fix conversion issues
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wconversion"
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#include <pthread.h>
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#include <sched.h>
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#include <sys/resource.h>
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#include <cutils/sched_policy.h>
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#include <log/log.h>
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#include <system/thread_defs.h>
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#include "EventControlThread.h"
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namespace android {
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EventControlThread::~EventControlThread() = default;
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namespace impl {
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EventControlThread::EventControlThread(EventControlThread::SetVSyncEnabledFunction function)
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: mSetVSyncEnabled(std::move(function)) {
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pthread_setname_np(mThread.native_handle(), "EventControlThread");
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pid_t tid = pthread_gettid_np(mThread.native_handle());
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setpriority(PRIO_PROCESS, tid, ANDROID_PRIORITY_URGENT_DISPLAY);
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set_sched_policy(tid, SP_FOREGROUND);
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}
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EventControlThread::~EventControlThread() {
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{
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std::lock_guard<std::mutex> lock(mMutex);
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mKeepRunning = false;
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mCondition.notify_all();
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}
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mThread.join();
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}
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void EventControlThread::setVsyncEnabled(bool enabled) {
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std::lock_guard<std::mutex> lock(mMutex);
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mVsyncEnabled = enabled;
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mCondition.notify_all();
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}
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// Unfortunately std::unique_lock gives warnings with -Wthread-safety
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void EventControlThread::threadMain() NO_THREAD_SAFETY_ANALYSIS {
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auto keepRunning = true;
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auto currentVsyncEnabled = false;
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while (keepRunning) {
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mSetVSyncEnabled(currentVsyncEnabled);
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std::unique_lock<std::mutex> lock(mMutex);
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mCondition.wait(lock, [this, currentVsyncEnabled, keepRunning]() NO_THREAD_SAFETY_ANALYSIS {
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return currentVsyncEnabled != mVsyncEnabled || keepRunning != mKeepRunning;
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});
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currentVsyncEnabled = mVsyncEnabled;
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keepRunning = mKeepRunning;
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}
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}
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} // namespace impl
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} // namespace android
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// TODO(b/129481165): remove the #pragma below and fix conversion issues
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#pragma clang diagnostic pop // ignored "-Wconversion"
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