2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 Computer, 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.
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.
31 #include "MainThread.h"
33 #include "Assertions.h"
34 #include "Threading.h"
41 static HWND threadingWindowHandle;
42 static UINT threadingFiredMessage;
43 const LPCWSTR kThreadingWindowClassName = L"ThreadingWindowClass";
45 LRESULT CALLBACK ThreadingWindowWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
47 if (message == threadingFiredMessage)
48 dispatchFunctionsFromMainThread();
50 return DefWindowProc(hWnd, message, wParam, lParam);
54 void initializeMainThreadPlatform()
56 if (threadingWindowHandle)
62 memset(&wcex, 0, sizeof(WNDCLASS));
65 memset(&wcex, 0, sizeof(WNDCLASSEX));
66 wcex.cbSize = sizeof(WNDCLASSEX);
68 wcex.lpfnWndProc = ThreadingWindowWndProc;
69 wcex.lpszClassName = kThreadingWindowClassName;
73 RegisterClassEx(&wcex);
74 hWndParent = HWND_MESSAGE;
77 threadingWindowHandle = CreateWindow(kThreadingWindowClassName, 0, 0,
78 CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, hWndParent, 0, 0, 0);
79 threadingFiredMessage = RegisterWindowMessage(L"com.apple.WebKit.MainThreadFired");
81 initializeCurrentThreadInternal("Main Thread");
84 void scheduleDispatchFunctionsOnMainThread()
86 ASSERT(threadingWindowHandle);
87 PostMessage(threadingWindowHandle, threadingFiredMessage, 0, 0);