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493cfd9601
* Define thread priority enum and set thread priority for all threads in Engine * Split out the thread data and the thread data set operator
109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#define FML_USED_ON_EMBEDDER
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#include "flutter/fml/thread.h"
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#include <memory>
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#include <string>
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#include <utility>
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#include "flutter/fml/build_config.h"
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#include "flutter/fml/message_loop.h"
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#include "flutter/fml/synchronization/waitable_event.h"
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#if defined(FML_OS_WIN)
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#include <windows.h>
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#elif defined(OS_FUCHSIA)
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#include <lib/zx/thread.h>
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#else
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#include <pthread.h>
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#endif
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namespace fml {
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#if defined(FML_OS_WIN)
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// The information on how to set the thread name comes from
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// a MSDN article: http://msdn2.microsoft.com/en-us/library/xcb2z8hs.aspx
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const DWORD kVCThreadNameException = 0x406D1388;
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typedef struct tagTHREADNAME_INFO {
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DWORD dwType; // Must be 0x1000.
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LPCSTR szName; // Pointer to name (in user addr space).
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DWORD dwThreadID; // Thread ID (-1=caller thread).
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DWORD dwFlags; // Reserved for future use, must be zero.
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} THREADNAME_INFO;
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#endif
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void SetThreadName(const std::string& name) {
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if (name == "") {
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return;
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}
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#if defined(FML_OS_MACOSX)
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pthread_setname_np(name.c_str());
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#elif defined(FML_OS_LINUX) || defined(FML_OS_ANDROID)
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pthread_setname_np(pthread_self(), name.c_str());
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#elif defined(FML_OS_WIN)
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THREADNAME_INFO info;
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info.dwType = 0x1000;
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info.szName = name.c_str();
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info.dwThreadID = GetCurrentThreadId();
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info.dwFlags = 0;
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__try {
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RaiseException(kVCThreadNameException, 0, sizeof(info) / sizeof(DWORD),
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reinterpret_cast<DWORD_PTR*>(&info));
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} __except (EXCEPTION_CONTINUE_EXECUTION) {
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}
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#elif defined(OS_FUCHSIA)
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zx::thread::self()->set_property(ZX_PROP_NAME, name.c_str(), name.size());
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#else
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FML_DLOG(INFO) << "Could not set the thread name to '" << name
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<< "' on this platform.";
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#endif
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}
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void Thread::SetCurrentThreadName(const Thread::ThreadConfig& config) {
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SetThreadName(config.name);
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}
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Thread::Thread(const std::string& name)
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: Thread(Thread::SetCurrentThreadName, ThreadConfig(name)) {}
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Thread::Thread(const ThreadConfigSetter& setter, const ThreadConfig& config)
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: joined_(false) {
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fml::AutoResetWaitableEvent latch;
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fml::RefPtr<fml::TaskRunner> runner;
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thread_ = std::make_unique<std::thread>(
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[&latch, &runner, setter, config]() -> void {
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setter(config);
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fml::MessageLoop::EnsureInitializedForCurrentThread();
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auto& loop = MessageLoop::GetCurrent();
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runner = loop.GetTaskRunner();
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latch.Signal();
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loop.Run();
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});
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latch.Wait();
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task_runner_ = runner;
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}
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Thread::~Thread() {
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Join();
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}
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fml::RefPtr<fml::TaskRunner> Thread::GetTaskRunner() const {
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return task_runner_;
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}
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void Thread::Join() {
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if (joined_) {
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return;
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}
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joined_ = true;
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task_runner_->PostTask([]() { MessageLoop::GetCurrent().Terminate(); });
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thread_->join();
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}
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} // namespace fml
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