LCOV - code coverage report
Current view: directory - dom/workers - RuntimeService.h (source / functions) Found Hit Coverage
Test: app.info Lines: 37 0 0.0 %
Date: 2012-06-02 Functions: 18 0 0.0 %

       1                 : /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
       2                 : /* vim: set ts=2 et sw=2 tw=80: */
       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 Web Workers.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  *   The Mozilla Foundation.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 2011
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *   Ben Turner <bent.mozilla@gmail.com> (Original Author)
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #ifndef mozilla_dom_workers_runtimeservice_h__
      41                 : #define mozilla_dom_workers_runtimeservice_h__
      42                 : 
      43                 : #include "Workers.h"
      44                 : 
      45                 : #include "nsIObserver.h"
      46                 : 
      47                 : #include "jsapi.h"
      48                 : #include "mozilla/Mutex.h"
      49                 : #include "mozilla/TimeStamp.h"
      50                 : #include "nsAutoPtr.h"
      51                 : #include "nsClassHashtable.h"
      52                 : #include "nsCOMPtr.h"
      53                 : #include "nsHashKeys.h"
      54                 : #include "nsStringGlue.h"
      55                 : #include "nsTArray.h"
      56                 : 
      57                 : class nsIThread;
      58                 : class nsITimer;
      59                 : class nsPIDOMWindow;
      60                 : 
      61                 : BEGIN_WORKERS_NAMESPACE
      62                 : 
      63                 : class WorkerPrivate;
      64                 : 
      65                 : class RuntimeService : public nsIObserver
      66                 : {
      67                 :   struct WorkerDomainInfo
      68               0 :   {
      69                 :     nsCString mDomain;
      70                 :     nsTArray<WorkerPrivate*> mActiveWorkers;
      71                 :     nsTArray<WorkerPrivate*> mQueuedWorkers;
      72                 :     PRUint32 mChildWorkerCount;
      73                 : 
      74               0 :     WorkerDomainInfo() : mActiveWorkers(1), mChildWorkerCount(0) { }
      75                 : 
      76                 :     PRUint32
      77               0 :     ActiveWorkerCount() const
      78                 :     {
      79               0 :       return mActiveWorkers.Length() + mChildWorkerCount;
      80                 :     }
      81                 :   };
      82                 : 
      83                 :   struct IdleThreadInfo
      84               0 :   {
      85                 :     nsCOMPtr<nsIThread> mThread;
      86                 :     mozilla::TimeStamp mExpirationTime;
      87                 :   };
      88                 : 
      89                 :   mozilla::Mutex mMutex;
      90                 : 
      91                 :   // Protected by mMutex.
      92                 :   nsClassHashtable<nsCStringHashKey, WorkerDomainInfo> mDomainMap;
      93                 : 
      94                 :   // Protected by mMutex.
      95                 :   nsTArray<IdleThreadInfo> mIdleThreadArray;
      96                 : 
      97                 :   // *Not* protected by mMutex.
      98                 :   nsClassHashtable<nsVoidPtrHashKey, nsTArray<WorkerPrivate*> > mWindowMap;
      99                 : 
     100                 :   // Only used on the main thread.
     101                 :   nsCOMPtr<nsITimer> mIdleThreadTimer;
     102                 : 
     103                 :   nsCString mDetectorName;
     104                 :   nsCString mSystemCharset;
     105                 : 
     106                 :   static PRUint32 sDefaultJSContextOptions;
     107                 :   static PRUint32 sDefaultJSRuntimeHeapSize;
     108                 :   static PRInt32 sCloseHandlerTimeoutSeconds;
     109                 : 
     110                 : #ifdef JS_GC_ZEAL
     111                 :   static PRUint8 sDefaultGCZeal;
     112                 : #endif
     113                 : 
     114                 : public:
     115                 :   struct NavigatorStrings
     116               0 :   {
     117                 :     nsString mAppName;
     118                 :     nsString mAppVersion;
     119                 :     nsString mPlatform;
     120                 :     nsString mUserAgent;
     121                 :   };
     122                 : 
     123                 : private:
     124                 :   NavigatorStrings mNavigatorStrings;
     125                 : 
     126                 :   // True when the observer service holds a reference to this object.
     127                 :   bool mObserved;
     128                 :   bool mShuttingDown;
     129                 :   bool mNavigatorStringsLoaded;
     130                 : 
     131                 : public:
     132                 :   NS_DECL_ISUPPORTS
     133                 :   NS_DECL_NSIOBSERVER
     134                 : 
     135                 :   static RuntimeService*
     136                 :   GetOrCreateService();
     137                 : 
     138                 :   static RuntimeService*
     139                 :   GetService();
     140                 : 
     141                 :   bool
     142                 :   RegisterWorker(JSContext* aCx, WorkerPrivate* aWorkerPrivate);
     143                 : 
     144                 :   void
     145                 :   UnregisterWorker(JSContext* aCx, WorkerPrivate* aWorkerPrivate);
     146                 : 
     147                 :   void
     148                 :   CancelWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
     149                 : 
     150                 :   void
     151                 :   SuspendWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
     152                 : 
     153                 :   void
     154                 :   ResumeWorkersForWindow(JSContext* aCx, nsPIDOMWindow* aWindow);
     155                 : 
     156                 :   const nsACString&
     157               0 :   GetDetectorName() const
     158                 :   {
     159               0 :     return mDetectorName;
     160                 :   }
     161                 : 
     162                 :   const nsACString&
     163               0 :   GetSystemCharset() const
     164                 :   {
     165               0 :     return mSystemCharset;
     166                 :   }
     167                 : 
     168                 :   const NavigatorStrings&
     169               0 :   GetNavigatorStrings() const
     170                 :   {
     171               0 :     return mNavigatorStrings;
     172                 :   }
     173                 : 
     174                 :   void
     175                 :   NoteIdleThread(nsIThread* aThread);
     176                 : 
     177                 :   static PRUint32
     178               0 :   GetDefaultJSContextOptions()
     179                 :   {
     180               0 :     AssertIsOnMainThread();
     181               0 :     return sDefaultJSContextOptions;
     182                 :   }
     183                 : 
     184                 :   static void
     185               0 :   SetDefaultJSContextOptions(PRUint32 aOptions)
     186                 :   {
     187               0 :     AssertIsOnMainThread();
     188               0 :     sDefaultJSContextOptions = aOptions;
     189               0 :   }
     190                 : 
     191                 :   void
     192                 :   UpdateAllWorkerJSContextOptions();
     193                 : 
     194                 :   static PRUint32
     195               0 :   GetDefaultJSRuntimeHeapSize()
     196                 :   {
     197               0 :     AssertIsOnMainThread();
     198               0 :     return sDefaultJSRuntimeHeapSize;
     199                 :   }
     200                 : 
     201                 :   static void
     202               0 :   SetDefaultJSRuntimeHeapSize(PRUint32 aMaxBytes)
     203                 :   {
     204               0 :     AssertIsOnMainThread();
     205               0 :     sDefaultJSRuntimeHeapSize = aMaxBytes;
     206               0 :   }
     207                 : 
     208                 :   void
     209                 :   UpdateAllWorkerJSRuntimeHeapSize();
     210                 : 
     211                 :   static PRUint32
     212               0 :   GetCloseHandlerTimeoutSeconds()
     213                 :   {
     214               0 :     return sCloseHandlerTimeoutSeconds > 0 ? sCloseHandlerTimeoutSeconds : 0;
     215                 :   }
     216                 : 
     217                 : #ifdef JS_GC_ZEAL
     218                 :   static PRUint8
     219               0 :   GetDefaultGCZeal()
     220                 :   {
     221               0 :     AssertIsOnMainThread();
     222               0 :     return sDefaultGCZeal;
     223                 :   }
     224                 : 
     225                 :   static void
     226               0 :   SetDefaultGCZeal(PRUint8 aGCZeal)
     227                 :   {
     228               0 :     AssertIsOnMainThread();
     229               0 :     sDefaultGCZeal = aGCZeal;
     230               0 :   }
     231                 : 
     232                 :   void
     233                 :   UpdateAllWorkerGCZeal();
     234                 : #endif
     235                 : 
     236                 :   void
     237                 :   GarbageCollectAllWorkers(bool aShrinking);
     238                 : 
     239                 :   class AutoSafeJSContext
     240                 :   {
     241                 :     JSContext* mContext;
     242                 : 
     243                 :   public:
     244                 :     AutoSafeJSContext(JSContext* aCx = nsnull);
     245                 :     ~AutoSafeJSContext();
     246                 : 
     247               0 :     operator JSContext*() const
     248                 :     {
     249               0 :       return mContext;
     250                 :     }
     251                 : 
     252                 :     static JSContext*
     253                 :     GetSafeContext();
     254                 :   };
     255                 : 
     256                 : private:
     257                 :   RuntimeService();
     258                 :   ~RuntimeService();
     259                 : 
     260                 :   nsresult
     261                 :   Init();
     262                 : 
     263                 :   void
     264                 :   Cleanup();
     265                 : 
     266                 :   static PLDHashOperator
     267                 :   AddAllTopLevelWorkersToArray(const nsACString& aKey,
     268                 :                                WorkerDomainInfo* aData,
     269                 :                                void* aUserArg);
     270                 : 
     271                 :   void
     272                 :   GetWorkersForWindow(nsPIDOMWindow* aWindow,
     273                 :                       nsTArray<WorkerPrivate*>& aWorkers);
     274                 : 
     275                 :   bool
     276                 :   ScheduleWorker(JSContext* aCx, WorkerPrivate* aWorkerPrivate);
     277                 : 
     278                 :   static void
     279                 :   ShutdownIdleThreads(nsITimer* aTimer, void* aClosure);
     280                 : };
     281                 : 
     282                 : END_WORKERS_NAMESPACE
     283                 : 
     284                 : #endif /* mozilla_dom_workers_runtimeservice_h__ */

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