1/* 2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. 3 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 15 * its contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include "config.h" 31#include "MainThread.h" 32 33#include "Assertions.h" 34#include "Threading.h" 35#include "WindowsExtras.h" 36 37namespace WTF { 38 39static HWND threadingWindowHandle; 40static UINT threadingFiredMessage; 41const LPCWSTR kThreadingWindowClassName = L"ThreadingWindowClass"; 42 43LRESULT CALLBACK ThreadingWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) 44{ 45 if (message == threadingFiredMessage) 46 dispatchFunctionsFromMainThread(); 47 else 48 return DefWindowProc(hWnd, message, wParam, lParam); 49 return 0; 50} 51 52void initializeMainThreadPlatform() 53{ 54 if (threadingWindowHandle) 55 return; 56 57 WNDCLASSW wcex; 58 memset(&wcex, 0, sizeof(WNDCLASSW)); 59 wcex.lpfnWndProc = ThreadingWindowWndProc; 60 wcex.lpszClassName = kThreadingWindowClassName; 61 RegisterClassW(&wcex); 62 63 threadingWindowHandle = CreateWindowW(kThreadingWindowClassName, 0, 0, 64 CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, HWND_MESSAGE, 0, 0, 0); 65 threadingFiredMessage = RegisterWindowMessageW(L"com.apple.WebKit.MainThreadFired"); 66 67 initializeCurrentThreadInternal("Main Thread"); 68} 69 70void scheduleDispatchFunctionsOnMainThread() 71{ 72 ASSERT(threadingWindowHandle); 73 PostMessage(threadingWindowHandle, threadingFiredMessage, 0, 0); 74} 75 76} // namespace WTF 77