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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "InputThread.h"
#include <android-base/logging.h>
#include <com_android_input_flags.h>
#include <processgroup/processgroup.h>
namespace android {
namespace input_flags = com::android::input::flags;
namespace {
bool applyInputEventProfile(const Thread& thread) {
#if defined(__ANDROID__)
return SetTaskProfiles(thread.getTid(), {"InputPolicy"});
#else
// Since thread information is not available and there's no benefit of
// applying the task profile on host, return directly.
return true;
#endif
}
// Implementation of Thread from libutils.
class InputThreadImpl : public Thread {
public:
explicit InputThreadImpl(std::function<void()> loop)
: Thread(/* canCallJava */ true), mThreadLoop(loop) {}
~InputThreadImpl() {}
private:
std::function<void()> mThreadLoop;
bool threadLoop() override {
mThreadLoop();
return true;
}
};
} // namespace
InputThread::InputThread(std::string name, std::function<void()> loop, std::function<void()> wake,
bool isInCriticalPath)
: mThreadWake(wake) {
mThread = sp<InputThreadImpl>::make(loop);
mThread->run(name.c_str(), ANDROID_PRIORITY_URGENT_DISPLAY);
if (input_flags::enable_input_policy_profile() && isInCriticalPath) {
if (!applyInputEventProfile(*mThread)) {
LOG(ERROR) << "Couldn't apply input policy profile for " << name;
}
}
}
InputThread::~InputThread() {
mThread->requestExit();
if (mThreadWake) {
mThreadWake();
}
mThread->requestExitAndWait();
}
bool InputThread::isCallingThread() {
#if defined(__ANDROID__)
return gettid() == mThread->getTid();
#else
// Assume that the caller is doing everything correctly,
// since thread information is not available on host
return false;
#endif
}
} // namespace android
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