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114 lines
3.5 KiB
114 lines
3.5 KiB
/*
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* Copyright 2021 Rockchip Electronics Co. LTD
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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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* author: zj@rock-chips.com
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "OutFrameThread"
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#include "OutFrameThread.h"
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#include <pthread.h>
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#include <sys/resource.h>
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#include <utils/Log.h>
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std::atomic<uint32_t> OutFrameThread::mNextThreadIndex{1};
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OutFrameThread::OutFrameThread(const char *prefix) {
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setup(prefix);
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}
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OutFrameThread::OutFrameThread() {
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setup("OutFrame");
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}
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OutFrameThread::~OutFrameThread() {
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ALOGE_IF(pthread_equal(pthread_self(), mThread),
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"%s() destructor running in thread", __func__);
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ALOGE_IF(mHasThread, "%s() thread never joined", __func__);
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}
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void OutFrameThread::setup(const char *prefix) {
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// Name the thread with an increasing index, "prefix_#", for debugging.
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uint32_t index = mNextThreadIndex++;
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// Wrap the index so that we do not hit the 16 char limit
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// and to avoid hard-to-read large numbers.
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index = index % 100000; // arbitrary
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snprintf(mName, sizeof(mName), "%s_%u", prefix, index);
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}
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void OutFrameThread::dispatch() {
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if (mRunnable != nullptr) {
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// androidSetThreadPriority(gettid(), ANDROID_PRIORITY_HIGHEST);
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int ret = setpriority(PRIO_PROCESS, 0, -20);
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if (ret < 0) {
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ALOGE("failed to setpriority - %s err = %s", mName, strerror(errno));
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}
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mRunnable->run();
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} else {
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run();
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}
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}
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// This is the entry point for the new thread created by createThread_l().
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// It converts the 'C' function call to a C++ method call.
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static void *ThreadInternal(void *arg) {
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OutFrameThread *thread = (OutFrameThread *)arg;
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thread->dispatch();
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return nullptr;
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}
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bool OutFrameThread::start(Runnable *runnable) {
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if (mHasThread) {
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ALOGE("start() - mHasThread already true");
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return false;
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}
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// mRunnable will be read by the new thread when it starts.
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// pthread_create() forces a memory synchronization so mRunnable does not need
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// to be atomic.
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mRunnable = runnable;
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int err = pthread_create(&mThread, nullptr, ThreadInternal, this);
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if (err != 0) {
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ALOGE("start() - pthread_create() returned %d %s", err, strerror(err));
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return false;
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} else {
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int err = pthread_setname_np(mThread, mName);
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ALOGW_IF((err != 0), "Could not set name of OutFrameThread. err = %d", err);
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mHasThread = true;
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return true;
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}
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}
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bool OutFrameThread::stop() {
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if (!mHasThread) {
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ALOGE("stop() but no thread running");
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return false;
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}
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// Check to see if the thread is trying to stop itself.
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if (pthread_equal(pthread_self(), mThread)) {
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ALOGE("%s() attempt to pthread_join() from launched thread!", __func__);
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return false;
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}
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int err = pthread_join(mThread, nullptr);
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if (err != 0) {
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ALOGE("stop() - pthread_join() returned %d %s", err, strerror(err));
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return false;
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} else {
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mHasThread = false;
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return true;
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}
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}
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