352e9f0b7a
Unlike the Java Looper the native one requires manually setting of the looper for a particular thread. So... do that. Fixes: 124467483 Test: really good guess Change-Id: Iac9b4a052e79228aea5760262996729d8dadb1b8
90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
/*
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* Copyright (C) 2017 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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#ifndef HWUI_THREADBASE_H
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#define HWUI_THREADBASE_H
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#include "WorkQueue.h"
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#include "utils/Macros.h"
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#include <utils/Looper.h>
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#include <utils/Thread.h>
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#include <algorithm>
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namespace android::uirenderer {
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class ThreadBase : public Thread {
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PREVENT_COPY_AND_ASSIGN(ThreadBase);
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public:
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ThreadBase()
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: Thread(false)
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, mLooper(new Looper(false))
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, mQueue([this]() { mLooper->wake(); }, mLock) {}
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WorkQueue& queue() { return mQueue; }
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void requestExit() {
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Thread::requestExit();
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mLooper->wake();
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}
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void start(const char* name = "ThreadBase") { Thread::run(name); }
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void join() { Thread::join(); }
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bool isRunning() const { return Thread::isRunning(); }
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protected:
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void waitForWork() {
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nsecs_t nextWakeup;
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{
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std::unique_lock lock{mLock};
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nextWakeup = mQueue.nextWakeup(lock);
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}
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int timeout = -1;
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if (nextWakeup < std::numeric_limits<nsecs_t>::max()) {
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timeout = ns2ms(nextWakeup - WorkQueue::clock::now());
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if (timeout < 0) timeout = 0;
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}
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int result = mLooper->pollOnce(timeout);
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LOG_ALWAYS_FATAL_IF(result == Looper::POLL_ERROR, "RenderThread Looper POLL_ERROR!");
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}
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void processQueue() { mQueue.process(); }
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virtual bool threadLoop() override {
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Looper::setForThread(mLooper);
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while (!exitPending()) {
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waitForWork();
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processQueue();
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}
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Looper::setForThread(nullptr);
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return false;
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}
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sp<Looper> mLooper;
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private:
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WorkQueue mQueue;
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std::mutex mLock;
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};
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} // namespace android::uirenderer
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#endif // HWUI_THREADBASE_H
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