blob: 26cc1f50f37ce35cca296856b84312e239665f09 [file] [log] [blame]
/*
* Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2009 Torch Mobile 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Apple Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 "config.h"
#include <wtf/MainThread.h>
#include <wtf/Assertions.h>
#include <wtf/RunLoop.h>
#include <wtf/Threading.h>
#include <wtf/WindowsExtras.h>
namespace WTF {
static HWND threadingWindowHandle;
static UINT threadingFiredMessage;
const LPCWSTR kThreadingWindowClassName = L"ThreadingWindowClass";
static ThreadIdentifier mainThread { 0 };
LRESULT CALLBACK ThreadingWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if (message == threadingFiredMessage)
dispatchFunctionsFromMainThread();
else
return DefWindowProc(hWnd, message, wParam, lParam);
return 0;
}
void initializeMainThreadPlatform()
{
if (threadingWindowHandle)
return;
WNDCLASSW wcex;
memset(&wcex, 0, sizeof(WNDCLASSW));
wcex.lpfnWndProc = ThreadingWindowWndProc;
wcex.lpszClassName = kThreadingWindowClassName;
RegisterClassW(&wcex);
threadingWindowHandle = CreateWindowW(kThreadingWindowClassName, 0, 0,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, HWND_MESSAGE, 0, 0, 0);
threadingFiredMessage = RegisterWindowMessageW(L"com.apple.WebKit.MainThreadFired");
mainThread = Thread::currentID();
Thread::initializeCurrentThreadInternal("Main Thread");
RunLoop::registerRunLoopMessageWindowClass();
}
bool isMainThread()
{
return mainThread == Thread::currentID();
}
bool isMainThreadIfInitialized()
{
return isMainThread();
}
bool isMainThreadInitialized()
{
return true;
}
void scheduleDispatchFunctionsOnMainThread()
{
ASSERT(threadingWindowHandle);
PostMessage(threadingWindowHandle, threadingFiredMessage, 0, 0);
}
} // namespace WTF