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4 : /* ***** BEGIN LICENSE BLOCK *****
5 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6 : *
7 : * The contents of this file are subject to the Mozilla Public License Version
8 : * 1.1 (the "License"); you may not use this file except in compliance with
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12 : * Software distributed under the License is distributed on an "AS IS" basis,
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14 : * for the specific language governing rights and limitations under the
15 : * License.
16 : *
17 : * The Original Code is Mozilla Plugin App.
18 : *
19 : * The Initial Developer of the Original Code is
20 : * Ben Turner <bent.mozilla@gmail.com>.
21 : * Portions created by the Initial Developer are Copyright (C) 2009
22 : * the Initial Developer. All Rights Reserved.
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24 : * Contributor(s):
25 : *
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38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : #ifndef mozilla_ipc_BrowserProcessSubThread_h
41 : #define mozilla_ipc_BrowserProcessSubThread_h
42 :
43 : #include "base/thread.h"
44 : #include "base/lock.h"
45 :
46 : #include "nsDebug.h"
47 :
48 : class NotificationService;
49 :
50 : namespace mozilla {
51 : namespace ipc {
52 :
53 : // Copied from browser_process_impl.cc, modified slightly.
54 : class BrowserProcessSubThread : public base::Thread
55 : {
56 : public:
57 : // An enumeration of the well-known threads.
58 : enum ID {
59 : IO,
60 : //FILE,
61 : //DB,
62 : //HISTORY,
63 : #if defined(OS_LINUX)
64 : // This thread has a second connection to the X server and is used
65 : // to process UI requests when routing the request to the UI
66 : // thread would risk deadlock.
67 : BACKGROUND_X11,
68 : #endif
69 :
70 : // This identifier does not represent a thread. Instead it counts
71 : // the number of well-known threads. Insert new well-known
72 : // threads before this identifier.
73 : ID_COUNT
74 : };
75 :
76 : explicit BrowserProcessSubThread(ID aId);
77 : ~BrowserProcessSubThread();
78 :
79 : static MessageLoop* GetMessageLoop(ID identifier);
80 :
81 : protected:
82 : virtual void Init();
83 : virtual void CleanUp();
84 :
85 : private:
86 : // The identifier of this thread. Only one thread can exist with a given
87 : // identifier at a given time.
88 : ID mIdentifier;
89 :
90 : NotificationService* mNotificationService;
91 :
92 : // This lock protects |browser_threads_|. Do not read or modify that array
93 : // without holding this lock. Do not block while holding this lock.
94 :
95 : // FIXME/cjones: XPCOM doesn't like static vars, so can't use
96 : // mozilla::Mutex
97 : static Lock sLock;
98 :
99 : // An array of the ChromeThread objects. This array is protected by |lock_|.
100 : // The threads are not owned by this array. Typically, the threads are owned
101 : // on the UI thread by the g_browser_process object. ChromeThreads remove
102 : // themselves from this array upon destruction.
103 : static BrowserProcessSubThread* sBrowserThreads[ID_COUNT];
104 : };
105 :
106 0 : inline void AssertIOThread()
107 : {
108 0 : NS_ASSERTION(MessageLoop::TYPE_IO == MessageLoop::current()->type(),
109 : "should be on the IO thread!");
110 0 : }
111 :
112 : } // namespace ipc
113 : } // namespace mozilla
114 :
115 : #endif // mozilla_ipc_BrowserProcessSubThread_h
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