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148 lines
4.5 KiB
C++
148 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#ifndef nsTraceRefcnt_h___
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#define nsTraceRefcnt_h___
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#include "nsCom.h"
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#include <stdio.h>
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class nsVoidArray;
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#ifdef DEBUG
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struct mozCtorDtorCounter {
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PRInt32 ctors;
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PRInt32 dtors;
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};
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#endif
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/**
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* This class is used to support tracing (and logging using nspr) of
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* addref and release calls. Note that only calls that use the
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* NS_ADDREF and related macros in nsISupports can be traced.
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*
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* The name of the nspr log module is "xpcomrefcnt" (case matters).
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*
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* This code only performs tracing built with debugging AND when
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* built with -DMOZ_TRACE_XPCOM_REFCNT (because it's expensive!).
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*/
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class nsTraceRefcnt {
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public:
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static NS_COM unsigned long AddRef(void* aPtr,
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unsigned long aNewRefcnt,
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const char* aFile,
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int aLine);
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static NS_COM unsigned long Release(void* aPtr,
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unsigned long aNewRefcnt,
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const char* aFile,
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int aLine);
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static NS_COM void Create(void* aPtr,
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const char* aType,
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const char* aFile,
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int aLine);
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static NS_COM void Destroy(void* aPtr,
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const char* aFile,
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int aLine);
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static NS_COM void LoadLibrarySymbols(const char* aLibraryName,
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void* aLibrayHandle);
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static NS_COM void WalkTheStack(char* aBuffer, int aBufLen);
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static NS_COM void DemangleSymbol(const char * aSymbol,
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char * aBuffer,
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int aBufLen);
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static NS_COM void LogAddRef(void* aPtr,
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nsrefcnt aRefCnt,
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const char* aClass,
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PRUint32 classSize);
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static NS_COM void LogRelease(void* aPtr,
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nsrefcnt aRefCnt,
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const char* aClass,
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PRUint32 classSize);
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#ifdef DEBUG
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/**
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* Register a constructor with the xpcom library. This records the
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* type name and the address of the counter so that later on when
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* DumpLeaks is called, we can print out those objects ctors whose
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* counter is not zero (the ones that have live object references
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* still out there)
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*/
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static NS_COM void RegisterCtor(const char* aType,
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mozCtorDtorCounter* aCounterAddr);
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static NS_COM void UnregisterCtor(const char* aType);
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/**
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* Dump the leaking constructors out.
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*/
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static NS_COM void DumpLeaks(FILE* out);
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/**
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* Erase the ctor registration data.
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*/
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static NS_COM void FlushCtorRegistry(void);
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#endif
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protected:
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#ifdef DEBUG
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static nsVoidArray* mCtors;
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#endif
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};
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//----------------------------------------------------------------------
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#ifdef DEBUG
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#define MOZ_DECL_CTOR_COUNTER(_type) \
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static mozCtorDtorCounter gCounter_##_type
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#define MOZ_COUNT_CTOR(_type) \
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PR_BEGIN_MACRO \
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if (0 == gCounter_##_type . ctors) { \
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nsTraceRefcnt::RegisterCtor(#_type, &gCounter_##_type); \
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} \
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gCounter_##_type . ctors++; \
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PR_END_MACRO
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#define MOZ_COUNT_DTOR(_type) \
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PR_BEGIN_MACRO \
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gCounter_##_type . dtors ++; \
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PR_END_MACRO
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#else
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#define MOZ_DECL_CTOR_COUNTER(_type)
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#define MOZ_COUNT_CTOR(_type)
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#define MOZ_COUNT_DTOR(_type)
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#endif /* DEBUG */
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#ifdef BLOATY
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extern "C" void
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NS_DumpBloatStatistics(void);
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#endif
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#endif /* nsTraceRefcnt_h___ */
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