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nsTraceRefcntImpl.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 Communicator client code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   L. David Baron <dbaron@dbaron.org>
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
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 #ifndef nsTraceRefcntImpl_h___
00039 #define nsTraceRefcntImpl_h___
00040 
00041 #include <stdio.h> // for FILE
00042 #include "nsITraceRefcnt.h"
00043 
00044 class nsTraceRefcntImpl : public nsITraceRefcnt
00045 {
00046 public:
00047   NS_DECL_ISUPPORTS
00048   NS_DECL_NSITRACEREFCNT
00049 
00050   nsTraceRefcntImpl();
00051 
00052   static NS_COM void Startup();  
00053   static NS_COM void Shutdown();
00054 
00055   enum StatisticsType {
00056     ALL_STATS,
00057     NEW_STATS
00058   };
00059 
00060   static NS_COM nsresult DumpStatistics(StatisticsType type = ALL_STATS,
00061                                         FILE* out = 0);
00062   
00063   static NS_COM void ResetStatistics(void);
00064 
00065   static NS_COM void LoadLibrarySymbols(const char* aLibraryName,
00066                                         void* aLibrayHandle);
00067 
00068 
00069   static NS_COM void DemangleSymbol(const char * aSymbol, 
00070                                     char * aBuffer,
00071                                     int aBufLen);
00072 
00073   static NS_COM void WalkTheStack(FILE* aStream);
00079   static NS_COM void SetActivityIsLegal(PRBool aLegal);
00080 
00081   static NS_METHOD Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
00082 
00083 private:
00084   ~nsTraceRefcntImpl() {}
00085 };
00086 
00087 #define NS_TRACE_REFCNT_CONTRACTID "@mozilla.org/xpcom/trace-refcnt;1"
00088 #define NS_TRACE_REFCNT_CLASSNAME  "nsTraceRefcnt Interface"
00089 #define NS_TRACE_REFCNT_CID                          \
00090 { /* e3e7511e-a395-4924-94b1-d527861cded4 */         \
00091     0xe3e7511e,                                      \
00092     0xa395,                                          \
00093     0x4924,                                          \
00094     {0x94, 0xb1, 0xd5, 0x27, 0x86, 0x1c, 0xde, 0xd4} \
00095 }                                                    \
00096 
00097 
00098 // And now for that utility that you've all been asking for...
00099 
00100 extern "C" NS_COM void 
00101 NS_MeanAndStdDev(double n, double sumOfValues, double sumOfSquaredValues,
00102                  double *meanResult, double *stdDevResult);
00103 
00105 #endif