LCOV - code coverage report
Current view: directory - xpcom/threads - nsThreadManager.h (source / functions) Found Hit Coverage
Test: app.info Lines: 6 6 100.0 %
Date: 2012-06-02 Functions: 3 3 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* vim:set ts=2 sw=2 sts=2 et cindent: */
       3                 : /* ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is Mozilla code.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is Google Inc.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2006
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *  Darin Fisher <darin@meer.net>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #ifndef nsThreadManager_h__
      40                 : #define nsThreadManager_h__
      41                 : 
      42                 : #include "mozilla/Mutex.h"
      43                 : #include "nsIThreadManager.h"
      44                 : #include "nsRefPtrHashtable.h"
      45                 : #include "nsThread.h"
      46                 : 
      47                 : class nsIRunnable;
      48                 : 
      49                 : class nsThreadManager : public nsIThreadManager
      50                 : {
      51                 : public:
      52                 :   NS_DECL_ISUPPORTS
      53                 :   NS_DECL_NSITHREADMANAGER
      54                 : 
      55          147255 :   static nsThreadManager *get() {
      56          147255 :     return &sInstance;
      57                 :   }
      58                 : 
      59                 :   nsresult Init();
      60                 : 
      61                 :   // Shutdown all threads.  This function should only be called on the main
      62                 :   // thread of the application process.
      63                 :   void Shutdown();
      64                 : 
      65                 :   // Called by nsThread to inform the ThreadManager it exists.  This method
      66                 :   // must be called when the given thread is the current thread.
      67                 :   void RegisterCurrentThread(nsThread *thread);
      68                 : 
      69                 :   // Called by nsThread to inform the ThreadManager it is going away.  This
      70                 :   // method must be called when the given thread is the current thread.
      71                 :   void UnregisterCurrentThread(nsThread *thread);
      72                 : 
      73                 :   // Returns the current thread.  Returns null if OOM or if ThreadManager isn't
      74                 :   // initialized.
      75                 :   nsThread *GetCurrentThread();
      76                 : 
      77                 :   // This needs to be public in order to support static instantiation of this
      78                 :   // class with older compilers (e.g., egcs-2.91.66).
      79            1487 :   ~nsThreadManager() {}
      80                 : 
      81                 : private:
      82            1464 :   nsThreadManager()
      83                 :     : mCurThreadIndex(0)
      84                 :     , mMainPRThread(nsnull)
      85                 :     , mLock(nsnull)
      86            1464 :     , mInitialized(false) {
      87            1464 :   }
      88                 :   
      89                 :   static nsThreadManager sInstance;
      90                 : 
      91                 :   nsRefPtrHashtable<nsVoidPtrHashKey, nsThread> mThreadsByPRThread;
      92                 :   PRUintn             mCurThreadIndex;  // thread-local-storage index
      93                 :   nsRefPtr<nsThread>  mMainThread;
      94                 :   PRThread           *mMainPRThread;
      95                 :   // This is a pointer in order to allow creating nsThreadManager from
      96                 :   // the static context in debug builds.
      97                 :   nsAutoPtr<mozilla::Mutex> mLock;  // protects tables
      98                 :   bool                mInitialized;
      99                 : };
     100                 : 
     101                 : #define NS_THREADMANAGER_CLASSNAME "nsThreadManager"
     102                 : #define NS_THREADMANAGER_CID                       \
     103                 : { /* 7a4204c6-e45a-4c37-8ebb-6709a22c917c */       \
     104                 :   0x7a4204c6,                                      \
     105                 :   0xe45a,                                          \
     106                 :   0x4c37,                                          \
     107                 :   {0x8e, 0xbb, 0x67, 0x09, 0xa2, 0x2c, 0x91, 0x7c} \
     108                 : }
     109                 : 
     110                 : #endif  // nsThreadManager_h__

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