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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "base/platform_thread.h"
#include <process.h>
#include "base/logging.h"
#include "base/win_util.h"
namespace {
// The information on how to set the thread name comes from
// a MSDN article: http://msdn2.microsoft.com/en-us/library/xcb2z8hs.aspx
const DWORD kVCThreadNameException = 0x406D1388;
typedef struct tagTHREADNAME_INFO {
DWORD dwType; // Must be 0x1000.
LPCSTR szName; // Pointer to name (in user addr space).
DWORD dwThreadID; // Thread ID (-1=caller thread).
DWORD dwFlags; // Reserved for future use, must be zero.
} THREADNAME_INFO;
unsigned __stdcall ThreadFunc(void* closure) {
PlatformThread::Delegate* delegate =
static_cast<PlatformThread::Delegate*>(closure);
delegate->ThreadMain();
return NULL;
}
} // namespace
// static
int PlatformThread::CurrentId() {
return GetCurrentThreadId();
}
// static
void PlatformThread::YieldCurrentThread() {
::Sleep(0);
}
// static
void PlatformThread::Sleep(int duration_ms) {
::Sleep(duration_ms);
}
// static
void PlatformThread::SetName(int thread_id, const char* name) {
THREADNAME_INFO info;
info.dwType = 0x1000;
info.szName = name;
info.dwThreadID = thread_id;
info.dwFlags = 0;
__try {
RaiseException(kVCThreadNameException, 0, sizeof(info)/sizeof(DWORD),
reinterpret_cast<DWORD_PTR*>(&info));
} __except(EXCEPTION_CONTINUE_EXECUTION) {
}
}
// static
bool PlatformThread::Create(size_t stack_size, Delegate* delegate,
PlatformThreadHandle* thread_handle) {
unsigned int flags = 0;
if (stack_size > 0 && win_util::GetWinVersion() >= win_util::WINVERSION_XP) {
flags = STACK_SIZE_PARAM_IS_A_RESERVATION;
} else {
stack_size = 0;
}
*thread_handle = reinterpret_cast<PlatformThreadHandle>(_beginthreadex(
NULL, stack_size, ThreadFunc, delegate, flags, NULL));
return *thread_handle != NULL;
}
// static
void PlatformThread::Join(PlatformThreadHandle thread_handle) {
DCHECK(thread_handle);
// Wait for the thread to exit. It should already have terminated but make
// sure this assumption is valid.
DWORD result = WaitForSingleObject(thread_handle, INFINITE);
DCHECK_EQ(WAIT_OBJECT_0, result);
CloseHandle(thread_handle);
}
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