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1 /*
2  * Copyright (C) 2010 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23  * THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef ThreadLauncher_h
27 #define ThreadLauncher_h
28 
29 #include "Connection.h"
30 #include "PlatformProcessIdentifier.h"
31 #include <wtf/RefPtr.h>
32 #include <wtf/Threading.h>
33 
34 #if PLATFORM(QT)
35 class QLocalSocket;
36 #endif
37 
38 namespace WebKit {
39 
40 class ThreadLauncher : public ThreadSafeRefCounted<ThreadLauncher> {
41 public:
42     class Client {
43     public:
~Client()44         virtual ~Client() { }
45         virtual void didFinishLaunching(ThreadLauncher*, CoreIPC::Connection::Identifier) = 0;
46     };
47 
create(Client * client)48     static PassRefPtr<ThreadLauncher> create(Client* client)
49     {
50         return adoptRef(new ThreadLauncher(client));
51     }
52 
isLaunching()53     bool isLaunching() const { return m_isLaunching; }
54 
55     void invalidate();
56 
57 private:
58     explicit ThreadLauncher(Client*);
59 
60     void launchThread();
61     void didFinishLaunchingThread(CoreIPC::Connection::Identifier);
62 
63     static CoreIPC::Connection::Identifier createWebThread();
64 
65     bool m_isLaunching;
66     Client* m_client;
67 };
68 
69 } // namespace WebKit
70 
71 #endif // ThreadLauncher_h
72