Files
frameworks_base/libs/hwui/thread/TaskManager.h
Stan Iliev 80dbc35555 Tell JVM to not wait for HWUI worker threads upon shutdown
RenderThread is setup as a daemon thread, which allows JVM to
exit without waiting on it. This CL does same setup for HWUI
worker threads, which offload work from the RenderThread.
This fixes an issue exposed by Vulkan pipeline, which is pushing
different loads to the worker threads and causing some java tests
to hang on exit. This is not a Vulkan specific issue, because GL
also hangs if worker thread is started.

Bug: 123374538
Test: Ran DismissDialogsInstrumentation test
Change-Id: Ie4ee94737ced975323a0792f57f8426c958e8056
2019-02-05 16:26:58 -05:00

109 lines
2.8 KiB
C++

/*
* Copyright (C) 2013 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.
*/
#ifndef ANDROID_HWUI_TASK_MANAGER_H
#define ANDROID_HWUI_TASK_MANAGER_H
#include <utils/Mutex.h>
#include <utils/String8.h>
#include <utils/Thread.h>
#include "Signal.h"
#include <vector>
namespace android {
namespace uirenderer {
template <typename T>
class Task;
class TaskBase;
template <typename T>
class TaskProcessor;
class TaskProcessorBase;
class TaskManager {
public:
TaskManager();
~TaskManager();
/**
* Returns true if this task manager can run tasks,
* false otherwise. This method will typically return
* false on a single CPU core device.
*/
bool canRunTasks() const;
/**
* Stops all allocated threads. Adding tasks will start
* the threads again as necessary.
*/
void stop();
private:
template <typename T>
friend class TaskProcessor;
template <typename T>
bool addTask(const sp<Task<T> >& task, const sp<TaskProcessor<T> >& processor) {
return addTaskBase(sp<TaskBase>(task), sp<TaskProcessorBase>(processor));
}
bool addTaskBase(const sp<TaskBase>& task, const sp<TaskProcessorBase>& processor);
struct TaskWrapper {
TaskWrapper() : mTask(), mProcessor() {}
TaskWrapper(const sp<TaskBase>& task, const sp<TaskProcessorBase>& processor)
: mTask(task), mProcessor(processor) {}
sp<TaskBase> mTask;
sp<TaskProcessorBase> mProcessor;
};
class WorkerThread : public Thread {
public:
explicit WorkerThread(const String8& name)
: Thread(false), mSignal(Condition::WAKE_UP_ONE), mName(name) {}
bool addTask(const TaskWrapper& task);
size_t getTaskCount() const;
void exit();
private:
virtual status_t readyToRun() override;
virtual bool threadLoop() override;
// Lock for the list of tasks
mutable Mutex mLock;
std::vector<TaskWrapper> mTasks;
// Signal used to wake up the thread when a new
// task is available in the list
mutable Signal mSignal;
const String8 mName;
};
std::vector<sp<WorkerThread> > mThreads;
};
} // namespace uirenderer
} // namespace android
#endif // ANDROID_HWUI_TASK_MANAGER_H