9d94a0c736
Also actually specifying the reserve stack size. BUG= R=pbos@webrtc.org Review URL: https://webrtc-codereview.appspot.com/37179004 Cr-Commit-Position: refs/heads/master@{#8331} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8331 4adac7df-926f-26a2-2b94-8c16560cd09d
128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/system_wrappers/source/thread_win.h"
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#include <process.h>
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#include <stdio.h>
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#include <windows.h>
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#include "webrtc/base/checks.h"
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#include "webrtc/system_wrappers/interface/trace.h"
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#include "webrtc/system_wrappers/source/set_thread_name_win.h"
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namespace webrtc {
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namespace {
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void CALLBACK RaiseFlag(ULONG_PTR param) {
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*reinterpret_cast<bool*>(param) = true;
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}
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}
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ThreadWindows::ThreadWindows(ThreadRunFunction func, ThreadObj obj,
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ThreadPriority prio, const char* thread_name)
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: run_function_(func),
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obj_(obj),
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prio_(prio),
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stop_(false),
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thread_(NULL),
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name_(thread_name ? thread_name : "webrtc") {
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DCHECK(func);
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}
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ThreadWindows::~ThreadWindows() {
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DCHECK(main_thread_.CalledOnValidThread());
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DCHECK(!thread_);
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}
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// static
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uint32_t ThreadWrapper::GetThreadId() {
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return GetCurrentThreadId();
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}
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// static
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DWORD WINAPI ThreadWindows::StartThread(void* param) {
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static_cast<ThreadWindows*>(param)->Run();
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return 0;
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}
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bool ThreadWindows::Start(unsigned int& id) {
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DCHECK(main_thread_.CalledOnValidThread());
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DCHECK(!thread_);
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stop_ = false;
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// See bug 2902 for background on STACK_SIZE_PARAM_IS_A_RESERVATION.
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// Set the reserved stack stack size to 1M, which is the default on Windows
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// and Linux.
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DWORD thread_id;
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thread_ = ::CreateThread(NULL, 1024 * 1024, &StartThread, this,
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STACK_SIZE_PARAM_IS_A_RESERVATION, &thread_id);
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if (!thread_ ) {
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DCHECK(false) << "CreateThread failed";
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return false;
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}
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id = thread_id;
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if (prio_ != kNormalPriority) {
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int priority = THREAD_PRIORITY_NORMAL;
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switch (prio_) {
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case kLowPriority:
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priority = THREAD_PRIORITY_BELOW_NORMAL;
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break;
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case kHighPriority:
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priority = THREAD_PRIORITY_ABOVE_NORMAL;
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break;
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case kHighestPriority:
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priority = THREAD_PRIORITY_HIGHEST;
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break;
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case kRealtimePriority:
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priority = THREAD_PRIORITY_TIME_CRITICAL;
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break;
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default:
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break;
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}
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SetThreadPriority(thread_, priority);
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}
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return true;
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}
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bool ThreadWindows::Stop() {
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DCHECK(main_thread_.CalledOnValidThread());
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if (thread_) {
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// Set stop_ to |true| on the worker thread.
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QueueUserAPC(&RaiseFlag, thread_, reinterpret_cast<ULONG_PTR>(&stop_));
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WaitForSingleObject(thread_, INFINITE);
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CloseHandle(thread_);
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thread_ = nullptr;
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}
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return true;
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}
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void ThreadWindows::Run() {
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if (!name_.empty())
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SetThreadName(static_cast<DWORD>(-1), name_.c_str());
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do {
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// The interface contract of Start/Stop is that for a successfull call to
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// Start, there should be at least one call to the run function. So we
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// call the function before checking |stop_|.
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if (!run_function_(obj_))
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break;
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// Alertable sleep to permit RaiseFlag to run and update |stop_|.
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SleepEx(0, true);
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} while (!stop_);
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}
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} // namespace webrtc
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