The Tor Browser: ipc/glue/BrowserProcessSubThread.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * vim: sw=2 ts=8 et :

     3  */

     4 /* This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 #ifndef mozilla_ipc_BrowserProcessSubThread_h

     9 #define mozilla_ipc_BrowserProcessSubThread_h

    11 #include "base/thread.h"

    12 #include "base/lock.h"

    14 #include "nsDebug.h"

    16 class NotificationService;

    18 namespace mozilla {

    19 namespace ipc {

    21 // Copied from browser_process_impl.cc, modified slightly.

    22 class BrowserProcessSubThread : public base::Thread

    23 {

    24 public:

    25   // An enumeration of the well-known threads.

    26   enum ID {

    27       IO,

    28       //FILE,

    29       //DB,

    30       //HISTORY,

    31 #if defined(OS_LINUX)

    32       // This thread has a second connection to the X server and is used

    33       // to process UI requests when routing the request to the UI

    34       // thread would risk deadlock.

    35       BACKGROUND_X11,

    36 #endif

    38       // This identifier does not represent a thread.  Instead it counts

    39       // the number of well-known threads.  Insert new well-known

    40       // threads before this identifier.

    41       ID_COUNT

    42   };

    44   explicit BrowserProcessSubThread(ID aId);

    45   ~BrowserProcessSubThread();

    47   static MessageLoop* GetMessageLoop(ID identifier);

    49 protected:

    50   virtual void Init();

    51   virtual void CleanUp();

    53 private:

    54   // The identifier of this thread.  Only one thread can exist with a given

    55   // identifier at a given time.

    56   ID mIdentifier;

    58   NotificationService* mNotificationService;

    60   // This lock protects |browser_threads_|.  Do not read or modify that array

    61   // without holding this lock.  Do not block while holding this lock.

    63   // FIXME/cjones: XPCOM doesn't like static vars, so can't use

    64   // mozilla::Mutex

    65   static Lock sLock;

    67   // An array of the ChromeThread objects.  This array is protected by |lock_|.

    68   // The threads are not owned by this array.  Typically, the threads are owned

    69   // on the UI thread by the g_browser_process object.  ChromeThreads remove

    70   // themselves from this array upon destruction.

    71   static BrowserProcessSubThread* sBrowserThreads[ID_COUNT];

    72 };

    74 inline void AssertIOThread()

    75 {

    76   NS_ASSERTION(MessageLoop::TYPE_IO == MessageLoop::current()->type(),

    77 	       "should be on the IO thread!");

    78 }

    80 } // namespace ipc

    81 } // namespace mozilla

    83 #endif // mozilla_ipc_BrowserProcessSubThread_h

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