michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * vim: sw=2 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_ipc_BrowserProcessSubThread_h
michael@0: #define mozilla_ipc_BrowserProcessSubThread_h
michael@0: 
michael@0: #include "base/thread.h"
michael@0: #include "base/lock.h"
michael@0: 
michael@0: #include "nsDebug.h"
michael@0: 
michael@0: class NotificationService;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace ipc {
michael@0: 
michael@0: // Copied from browser_process_impl.cc, modified slightly.
michael@0: class BrowserProcessSubThread : public base::Thread
michael@0: {
michael@0: public:
michael@0:   // An enumeration of the well-known threads.
michael@0:   enum ID {
michael@0:       IO,
michael@0:       //FILE,
michael@0:       //DB,
michael@0:       //HISTORY,
michael@0: #if defined(OS_LINUX)
michael@0:       // This thread has a second connection to the X server and is used
michael@0:       // to process UI requests when routing the request to the UI
michael@0:       // thread would risk deadlock.
michael@0:       BACKGROUND_X11,
michael@0: #endif
michael@0: 
michael@0:       // This identifier does not represent a thread.  Instead it counts
michael@0:       // the number of well-known threads.  Insert new well-known
michael@0:       // threads before this identifier.
michael@0:       ID_COUNT
michael@0:   };
michael@0: 
michael@0:   explicit BrowserProcessSubThread(ID aId);
michael@0:   ~BrowserProcessSubThread();
michael@0: 
michael@0:   static MessageLoop* GetMessageLoop(ID identifier);
michael@0: 
michael@0: protected:
michael@0:   virtual void Init();
michael@0:   virtual void CleanUp();
michael@0: 
michael@0: private:
michael@0:   // The identifier of this thread.  Only one thread can exist with a given
michael@0:   // identifier at a given time.
michael@0:   ID mIdentifier;
michael@0: 
michael@0:   NotificationService* mNotificationService;
michael@0: 
michael@0:   // This lock protects |browser_threads_|.  Do not read or modify that array
michael@0:   // without holding this lock.  Do not block while holding this lock.
michael@0: 
michael@0:   // FIXME/cjones: XPCOM doesn't like static vars, so can't use 
michael@0:   // mozilla::Mutex
michael@0:   static Lock sLock;
michael@0: 
michael@0:   // An array of the ChromeThread objects.  This array is protected by |lock_|.
michael@0:   // The threads are not owned by this array.  Typically, the threads are owned
michael@0:   // on the UI thread by the g_browser_process object.  ChromeThreads remove
michael@0:   // themselves from this array upon destruction.
michael@0:   static BrowserProcessSubThread* sBrowserThreads[ID_COUNT];
michael@0: };
michael@0: 
michael@0: inline void AssertIOThread()
michael@0: {
michael@0:   NS_ASSERTION(MessageLoop::TYPE_IO == MessageLoop::current()->type(),
michael@0: 	       "should be on the IO thread!");
michael@0: }
michael@0: 
michael@0: } // namespace ipc
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_ipc_BrowserProcessSubThread_h