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nsExceptionService.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * ActiveState Tool Corp..
00019  * Portions created by the Initial Developer are Copyright (C) 2001
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Mark Hammond <MarkH@ActiveState.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsExceptionService_h__
00040 #define nsExceptionService_h__
00041 
00042 #include "nsVoidArray.h"
00043 #include "nsIException.h"
00044 #include "nsIExceptionService.h"
00045 #include "nsIObserverService.h"
00046 #include "nsHashtable.h"
00047 #include "nsIObserver.h"
00048 
00049 class nsExceptionManager;
00050 
00052 class nsExceptionService : public nsIExceptionService, public nsIObserver
00053 {
00054 public:
00055   NS_DECL_ISUPPORTS
00056   NS_DECL_NSIEXCEPTIONSERVICE
00057   NS_DECL_NSIEXCEPTIONMANAGER
00058   NS_DECL_NSIOBSERVER
00059 
00060   nsExceptionService();
00061 
00062   /* additional members */
00063   nsresult DoGetExceptionFromProvider(nsresult errCode,
00064                                       nsIException *defaultException,
00065                                       nsIException **_richError);
00066   void Shutdown();
00067 
00068 
00069   /* thread management and cleanup */
00070   static void AddThread(nsExceptionManager *);
00071   static void DropThread(nsExceptionManager *);
00072   static void DoDropThread(nsExceptionManager *thread);
00073 
00074   static void DropAllThreads();
00075   static nsExceptionManager *firstThread;
00076 
00077   nsSupportsHashtable mProviders;
00078 
00079   /* single lock protects both providers hashtable
00080      and thread list */
00081   static PRLock* lock;
00082 
00083   static PRUintn tlsIndex;
00084   static void PR_CALLBACK ThreadDestruct( void *data );
00085 #ifdef NS_DEBUG
00086   static PRInt32 totalInstances;
00087 #endif
00088 
00089 private:
00090   ~nsExceptionService();
00091 };
00092 
00093 
00094 #endif // nsExceptionService_h__