diff options
Diffstat (limited to 'plugins/!NotAdopted/VypressChat/contrib/memwatch.c')
| -rw-r--r-- | plugins/!NotAdopted/VypressChat/contrib/memwatch.c | 2664 |
1 files changed, 0 insertions, 2664 deletions
diff --git a/plugins/!NotAdopted/VypressChat/contrib/memwatch.c b/plugins/!NotAdopted/VypressChat/contrib/memwatch.c deleted file mode 100644 index fc59fa40a1..0000000000 --- a/plugins/!NotAdopted/VypressChat/contrib/memwatch.c +++ /dev/null @@ -1,2664 +0,0 @@ -/*
-** MEMWATCH.C
-** Nonintrusive ANSI C memory leak / overwrite detection
-** Copyright (C) 1992-2003 Johan Lindh
-** All rights reserved.
-** Version 2.71
-
- This file is part of MEMWATCH.
-
- MEMWATCH is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- MEMWATCH is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with MEMWATCH; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-**
-** 920810 JLI [1.00]
-** 920830 JLI [1.10 double-free detection]
-** 920912 JLI [1.15 mwPuts, mwGrab/Drop, mwLimit]
-** 921022 JLI [1.20 ASSERT and VERIFY]
-** 921105 JLI [1.30 C++ support and TRACE]
-** 921116 JLI [1.40 mwSetOutFunc]
-** 930215 JLI [1.50 modified ASSERT/VERIFY]
-** 930327 JLI [1.51 better auto-init & PC-lint support]
-** 930506 JLI [1.55 MemWatch class, improved C++ support]
-** 930507 JLI [1.60 mwTest & CHECK()]
-** 930809 JLI [1.65 Abort/Retry/Ignore]
-** 930820 JLI [1.70 data dump when unfreed]
-** 931016 JLI [1.72 modified C++ new/delete handling]
-** 931108 JLI [1.77 mwSetAssertAction() & some small changes]
-** 940110 JLI [1.80 no-mans-land alloc/checking]
-** 940328 JLI [2.00 version 2.0 rewrite]
-** Improved NML (no-mans-land) support.
-** Improved performance (especially for free()ing!).
-** Support for 'read-only' buffers (checksums)
-** ^^ NOTE: I never did this... maybe I should?
-** FBI (free'd block info) tagged before freed blocks
-** Exporting of the mwCounter variable
-** mwBreakOut() localizes debugger support
-** Allocation statistics (global, per-module, per-line)
-** Self-repair ability with relinking
-** 950913 JLI [2.10 improved garbage handling]
-** 951201 JLI [2.11 improved auto-free in emergencies]
-** 960125 JLI [X.01 implemented auto-checking using mwAutoCheck()]
-** 960514 JLI [2.12 undefining of existing macros]
-** 960515 JLI [2.13 possibility to use default new() & delete()]
-** 960516 JLI [2.20 suppression of file flushing on unfreed msgs]
-** 960516 JLI [2.21 better support for using MEMWATCH with DLL's]
-** 960710 JLI [X.02 multiple logs and mwFlushNow()]
-** 960801 JLI [2.22 merged X.01 version with current]
-** 960805 JLI [2.30 mwIsXXXXAddr() to avoid unneeded GP's]
-** 960805 JLI [2.31 merged X.02 version with current]
-** 961002 JLI [2.32 support for realloc() + fixed STDERR bug]
-** 961222 JLI [2.40 added mwMark() & mwUnmark()]
-** 970101 JLI [2.41 added over/underflow checking after failed ASSERT/VERIFY]
-** 970113 JLI [2.42 added support for PC-Lint 7.00g]
-** 970207 JLI [2.43 added support for strdup()]
-** 970209 JLI [2.44 changed default filename to lowercase]
-** 970405 JLI [2.45 fixed bug related with atexit() and some C++ compilers]
-** 970723 JLI [2.46 added MW_ARI_NULLREAD flag]
-** 970813 JLI [2.47 stabilized marker handling]
-** 980317 JLI [2.48 ripped out C++ support; wasn't working good anyway]
-** 980318 JLI [2.50 improved self-repair facilities & SIGSEGV support]
-** 980417 JLI [2.51 more checks for invalid addresses]
-** 980512 JLI [2.52 moved MW_ARI_NULLREAD to occur before aborting]
-** 990112 JLI [2.53 added check for empty heap to mwIsOwned]
-** 990217 JLI [2.55 improved the emergency repairs diagnostics and NML]
-** 990224 JLI [2.56 changed ordering of members in structures]
-** 990303 JLI [2.57 first maybe-fixit-for-hpux test]
-** 990516 JLI [2.58 added 'static' to the definition of mwAutoInit]
-** 990517 JLI [2.59 fixed some high-sensitivity warnings]
-** 990610 JLI [2.60 fixed some more high-sensitivity warnings]
-** 990715 JLI [2.61 changed TRACE/ASSERT/VERIFY macro names]
-** 991001 JLI [2.62 added CHECK_BUFFER() and mwTestBuffer()]
-** 991007 JLI [2.63 first shot at a 64-bit compatible version]
-** 991009 JLI [2.64 undef's strdup() if defined, mwStrdup made const]
-** 000704 JLI [2.65 added some more detection for 64-bits]
-** 010502 JLI [2.66 incorporated some user fixes]
-** [mwRelink() could print out garbage pointer (thanks mac@phobos.ca)]
-** [added array destructor for C++ (thanks rdasilva@connecttel.com)]
-** [added mutex support (thanks rdasilva@connecttel.com)]
-** 010531 JLI [2.67 fix: mwMutexXXX() was declared even if MW_HAVE_MUTEX was not defined]
-** 010619 JLI [2.68 fix: mwRealloc() could leave the mutex locked]
-** 020918 JLI [2.69 changed to GPL, added C++ array allocation by Howard Cohen]
-** 030212 JLI [2.70 mwMalloc() bug for very large allocations (4GB on 32bits)]
-** 030520 JLI [2.71 added ULONG_LONG_MAX as a 64-bit detector (thanks Sami Salonen)]
-*/
-
-#define __MEMWATCH_C 1
-
-#ifdef MW_NOCPP
-#define MEMWATCH_NOCPP
-#endif
-#ifdef MW_STDIO
-#define MEMWATCH_STDIO
-#endif
-
-/***********************************************************************
-** Include files
-***********************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <signal.h>
-#include <setjmp.h>
-#include <time.h>
-#include <limits.h>
-#include "memwatch.h"
-
-#ifndef toupper
-#include <ctype.h>
-#endif
-
-#if defined(WIN32) || defined(__WIN32__)
-#define MW_HAVE_MUTEX 1
-#include <windows.h>
-#endif
-
-#if defined(MW_PTHREADS) || defined(HAVE_PTHREAD_H)
-#define MW_HAVE_MUTEX 1
-#include <pthread.h>
-#endif
-
-/***********************************************************************
-** Defines & other weird stuff
-***********************************************************************/
-
-/*lint -save -e767 */
-#define VERSION "2.71" /* the current version number */
-#define CHKVAL(mw) (0xFE0180L^(long)mw->count^(long)mw->size^(long)mw->line)
-#define FLUSH() mwFlush()
-#define TESTS(f,l) if(mwTestAlways) (void)mwTestNow(f,l,1)
-#define PRECHK 0x01234567L
-#define POSTCHK 0x76543210L
-#define mwBUFFER_TO_MW(p) ( (mwData*) (void*) ( ((char*)p)-mwDataSize-mwOverflowZoneSize ) )
-/*lint -restore */
-
-#define MW_NML 0x0001
-
-#ifdef _MSC_VER
-#define COMMIT "c" /* Microsoft C requires the 'c' to perform as desired */
-#else
-#define COMMIT "" /* Normal ANSI */
-#endif /* _MSC_VER */
-
-#ifdef __cplusplus
-#define CPPTEXT "++"
-#else
-#define CPPTEXT ""
-#endif /* __cplusplus */
-
-#ifdef MEMWATCH_STDIO
-#define mwSTDERR stderr
-#else
-#define mwSTDERR mwLog
-#endif
-
-#ifdef MW_HAVE_MUTEX
-#define MW_MUTEX_INIT() mwMutexInit()
-#define MW_MUTEX_TERM() mwMutexTerm()
-#define MW_MUTEX_LOCK() mwMutexLock()
-#define MW_MUTEX_UNLOCK() mwMutexUnlock()
-#else
-#define MW_MUTEX_INIT()
-#define MW_MUTEX_TERM()
-#define MW_MUTEX_LOCK()
-#define MW_MUTEX_UNLOCK()
-#endif
-
-/***********************************************************************
-** If you really, really know what you're doing,
-** you can predefine these things yourself.
-***********************************************************************/
-
-#ifndef mwBYTE_DEFINED
-# if CHAR_BIT != 8
-# error need CHAR_BIT to be 8!
-# else
-typedef unsigned char mwBYTE;
-# define mwBYTE_DEFINED 1
-# endif
-#endif
-
-#if defined(ULONGLONG_MAX) || defined(ULLONG_MAX) || defined(_UI64_MAX) || defined(ULONG_LONG_MAX)
-# define mw64BIT 1
-# define mwROUNDALLOC_DEFAULT 8
-#else
-# if UINT_MAX <= 0xFFFFUL
-# define mw16BIT 1
-# define mwROUNDALLOC_DEFAULT 2
-# else
-# if ULONG_MAX > 0xFFFFFFFFUL
-# define mw64BIT 1
-# define mwROUNDALLOC_DEFAULT 8
-# else
-# define mw32BIT 1
-# define mwROUNDALLOC_DEFAULT 4
-# endif
-# endif
-#endif
-
-/* mwROUNDALLOC is the number of bytes to */
-/* round up to, to ensure that the end of */
-/* the buffer is suitable for storage of */
-/* any kind of object */
-#ifndef mwROUNDALLOC
-# define mwROUNDALLOC mwROUNDALLOC_DEFAULT
-#endif
-
-#ifndef mwDWORD_DEFINED
-#if ULONG_MAX == 0xFFFFFFFFUL
-typedef unsigned long mwDWORD;
-#define mwDWORD_DEFINED "unsigned long"
-#endif
-#endif
-
-#ifndef mwDWORD_DEFINED
-#if UINT_MAX == 0xFFFFFFFFUL
-typedef unsigned int mwDWORD;
-#define mwDWORD_DEFINED "unsigned int"
-#endif
-#endif
-
-#ifndef mwDWORD_DEFINED
-#if USHRT_MAX == 0xFFFFFFFFUL
-typedef unsigned short mwDWORD;
-#define mwDWORD_DEFINED "unsigned short"
-#endif
-#endif
-
-#ifndef mwBYTE_DEFINED
-#error "can't find out the correct type for a 8 bit scalar"
-#endif
-
-#ifndef mwDWORD_DEFINED
-#error "can't find out the correct type for a 32 bit scalar"
-#endif
-
-/***********************************************************************
-** Typedefs & structures
-***********************************************************************/
-
-/* main data holding area, precedes actual allocation */
-typedef struct mwData_ mwData;
-struct mwData_ {
- mwData* prev; /* previous allocation in chain */
- mwData* next; /* next allocation in chain */
- const char* file; /* file name where allocated */
- long count; /* action count */
- long check; /* integrity check value */
-#if 0
- long crc; /* data crc value */
-#endif
- size_t size; /* size of allocation */
- int line; /* line number where allocated */
- unsigned flag; /* flag word */
- };
-
-/* statistics structure */
-typedef struct mwStat_ mwStat;
-struct mwStat_ {
- mwStat* next; /* next statistic buffer */
- const char* file;
- long total; /* total bytes allocated */
- long num; /* total number of allocations */
- long max; /* max allocated at one time */
- long curr; /* current allocations */
- int line;
- };
-
-/* grabbing structure, 1K in size */
-typedef struct mwGrabData_ mwGrabData;
-struct mwGrabData_ {
- mwGrabData* next;
- int type;
- char blob[ 1024 - sizeof(mwGrabData*) - sizeof(int) ];
- };
-
-typedef struct mwMarker_ mwMarker;
-struct mwMarker_ {
- void *host;
- char *text;
- mwMarker *next;
- int level;
- };
-
-#if defined(WIN32) || defined(__WIN32__)
-typedef HANDLE mwMutex;
-#endif
-
-#if defined(MW_PTHREADS) || defined(HAVE_PTHREAD_H)
-typedef pthread_mutex_t mwMutex;
-#endif
-
-/***********************************************************************
-** Static variables
-***********************************************************************/
-
-static int mwInited = 0;
-static int mwInfoWritten = 0;
-static int mwUseAtexit = 0;
-static FILE* mwLog = NULL;
-static int mwFlushing = 0;
-static int mwStatLevel = MW_STAT_DEFAULT;
-static int mwNML = MW_NML_DEFAULT;
-static int mwFBI = 0;
-static long mwAllocLimit = 0L;
-static int mwUseLimit = 0;
-
-static long mwNumCurAlloc = 0L;
-static mwData* mwHead = NULL;
-static mwData* mwTail = NULL;
-static int mwDataSize = 0;
-static unsigned char mwOverflowZoneTemplate[] = "mEmwAtch";
-static int mwOverflowZoneSize = mwROUNDALLOC;
-
-static void (*mwOutFunction)(int) = NULL;
-static int (*mwAriFunction)(const char*) = NULL;
-static int mwAriAction = MW_ARI_ABORT;
-
-static char mwPrintBuf[MW_TRACE_BUFFER+8];
-
-static unsigned long mwCounter = 0L;
-static long mwErrors = 0L;
-
-static int mwTestFlags = 0;
-static int mwTestAlways = 0;
-
-static FILE* mwLogB1 = NULL;
-static int mwFlushingB1 = 0;
-
-static mwStat* mwStatList = NULL;
-static long mwStatTotAlloc = 0L;
-static long mwStatMaxAlloc = 0L;
-static long mwStatNumAlloc = 0L;
-static long mwStatCurAlloc = 0L;
-static long mwNmlNumAlloc = 0L;
-static long mwNmlCurAlloc = 0L;
-
-static mwGrabData* mwGrabList = NULL;
-static long mwGrabSize = 0L;
-
-static void * mwLastFree[MW_FREE_LIST];
-static const char *mwLFfile[MW_FREE_LIST];
-static int mwLFline[MW_FREE_LIST];
-static int mwLFcur = 0;
-
-static mwMarker* mwFirstMark = NULL;
-
-static FILE* mwLogB2 = NULL;
-static int mwFlushingB2 = 0;
-
-#ifdef MW_HAVE_MUTEX
-static mwMutex mwGlobalMutex;
-#endif
-
-/***********************************************************************
-** Static function declarations
-***********************************************************************/
-
-static void mwAutoInit( void );
-static FILE* mwLogR( void );
-static void mwLogW( FILE* );
-static int mwFlushR( void );
-static void mwFlushW( int );
-static void mwFlush( void );
-static void mwIncErr( void );
-static void mwUnlink( mwData*, const char* file, int line );
-static int mwRelink( mwData*, const char* file, int line );
-static int mwIsHeapOK( mwData *mw );
-static int mwIsOwned( mwData* mw, const char* file, int line );
-static int mwTestBuf( mwData* mw, const char* file, int line );
-static void mwDefaultOutFunc( int );
-static void mwWrite( const char* format, ... );
-static void mwLogFile( const char* name );
-static size_t mwFreeUp( size_t, int );
-static const void *mwTestMem( const void *, unsigned, int );
-static int mwStrCmpI( const char *s1, const char *s2 );
-static int mwTestNow( const char *file, int line, int always_invoked );
-static void mwDropAll( void );
-static const char *mwGrabType( int type );
-static unsigned mwGrab_( unsigned kb, int type, int silent );
-static unsigned mwDrop_( unsigned kb, int type, int silent );
-static int mwARI( const char* text );
-static void mwStatReport( void );
-static mwStat* mwStatGet( const char*, int, int );
-static void mwStatAlloc( size_t, const char*, int );
-static void mwStatFree( size_t, const char*, int );
-static int mwCheckOF( const void * p );
-static void mwWriteOF( void * p );
-static char mwDummy( char c );
-#ifdef MW_HAVE_MUTEX
-static void mwMutexInit( void );
-static void mwMutexTerm( void );
-static void mwMutexLock( void );
-static void mwMutexUnlock( void );
-#endif
-
-/***********************************************************************
-** System functions
-***********************************************************************/
-
-void mwInit( void ) {
- time_t tid;
-
- if( mwInited++ > 0 ) return;
-
- MW_MUTEX_INIT();
-
- /* start a log if none is running */
- if( mwLogR() == NULL ) mwLogFile( "memwatch.log" );
- if( mwLogR() == NULL ) {
- int i;
- char buf[32];
- /* oops, could not open it! */
- /* probably because it's already open */
- /* so we try some other names */
- for( i=1; i<100; i++ ) {
- sprintf( buf, "memwat%02d.log", i );
- mwLogFile( buf );
- if( mwLogR() != NULL ) break;
- }
- }
-
- /* initialize the statistics */
- mwStatList = NULL;
- mwStatTotAlloc = 0L;
- mwStatCurAlloc = 0L;
- mwStatMaxAlloc = 0L;
- mwStatNumAlloc = 0L;
- mwNmlCurAlloc = 0L;
- mwNmlNumAlloc = 0L;
-
- /* calculate the buffer size to use for a mwData */
- mwDataSize = sizeof(mwData);
- while( mwDataSize % mwROUNDALLOC ) mwDataSize ++;
-
- /* write informational header if needed */
- if( !mwInfoWritten ) {
- mwInfoWritten = 1;
- (void) time( &tid );
- mwWrite(
- "\n============="
- " MEMWATCH " VERSION " Copyright (C) 1992-1999 Johan Lindh "
- "=============\n");
- mwWrite( "\nStarted at %s\n", ctime( &tid ) );
-
-/**************************************************************** Generic */
- mwWrite( "Modes: " );
-#ifdef mwNew
- mwWrite( "C++ " );
-#endif /* mwNew */
-#ifdef __STDC__
- mwWrite( "__STDC__ " );
-#endif /* __STDC__ */
-#ifdef mw16BIT
- mwWrite( "16-bit " );
-#endif
-#ifdef mw32BIT
- mwWrite( "32-bit " );
-#endif
-#ifdef mw64BIT
- mwWrite( "64-bit " );
-#endif
- mwWrite( "mwDWORD==(" mwDWORD_DEFINED ")\n" );
- mwWrite( "mwROUNDALLOC==%d sizeof(mwData)==%d mwDataSize==%d\n",
- mwROUNDALLOC, sizeof(mwData), mwDataSize );
-/**************************************************************** Generic */
-
-/************************************************************ Microsoft C */
-#ifdef _MSC_VER
- mwWrite( "Compiled using Microsoft C" CPPTEXT
- " %d.%02d\n", _MSC_VER / 100, _MSC_VER % 100 );
-#endif /* _MSC_VER */
-/************************************************************ Microsoft C */
-
-/************************************************************** Borland C */
-#ifdef __BORLANDC__
- mwWrite( "Compiled using Borland C"
-#ifdef __cplusplus
- "++ %d.%01d\n", __BCPLUSPLUS__/0x100, (__BCPLUSPLUS__%0x100)/0x10 );
-#else
- " %d.%01d\n", __BORLANDC__/0x100, (__BORLANDC__%0x100)/0x10 );
-#endif /* __cplusplus */
-#endif /* __BORLANDC__ */
-/************************************************************** Borland C */
-
-/************************************************************** Watcom C */
-#ifdef __WATCOMC__
- mwWrite( "Compiled using Watcom C %d.%02d ",
- __WATCOMC__/100, __WATCOMC__%100 );
-#ifdef __FLAT__
- mwWrite( "(32-bit flat model)" );
-#endif /* __FLAT__ */
- mwWrite( "\n" );
-#endif /* __WATCOMC__ */
-/************************************************************** Watcom C */
-
- mwWrite( "\n" );
- FLUSH();
- }
-
- if( mwUseAtexit ) (void) atexit( mwAbort );
- return;
- }
-
-void mwAbort( void ) {
- mwData *mw;
- mwMarker *mrk;
- char *data;
- time_t tid;
- int c, i, j;
- int errors;
-
- tid = time( NULL );
- mwWrite( "\nStopped at %s\n", ctime( &tid) );
-
- if( !mwInited )
- mwWrite( "internal: mwAbort(): MEMWATCH not initialized!\n" );
-
- /* release the grab list */
- mwDropAll();
-
- /* report mwMarked items */
- while( mwFirstMark ) {
- mrk = mwFirstMark->next;
- mwWrite( "mark: %p: %s\n", mwFirstMark->host, mwFirstMark->text );
- free( mwFirstMark->text );
- free( mwFirstMark );
- mwFirstMark = mrk;
- mwErrors ++;
- }
-
- /* release all still allocated memory */
- errors = 0;
- while( mwHead != NULL && errors < 3 ) {
- if( !mwIsOwned(mwHead, __FILE__, __LINE__ ) ) {
- if( errors < 3 )
- {
- errors ++;
- mwWrite( "internal: NML/unfreed scan restarting\n" );
- FLUSH();
- mwHead = mwHead;
- continue;
- }
- mwWrite( "internal: NML/unfreed scan aborted, heap too damaged\n" );
- FLUSH();
- break;
- }
- mwFlushW(0);
- if( !(mwHead->flag & MW_NML) ) {
- mwErrors++;
- data = ((char*)mwHead)+mwDataSize;
- mwWrite( "unfreed: <%ld> %s(%d), %ld bytes at %p ",
- mwHead->count, mwHead->file, mwHead->line, (long)mwHead->size, data+mwOverflowZoneSize );
- if( mwCheckOF( data ) ) {
- mwWrite( "[underflowed] ");
- FLUSH();
- }
- if( mwCheckOF( (data+mwOverflowZoneSize+mwHead->size) ) ) {
- mwWrite( "[overflowed] ");
- FLUSH();
- }
- mwWrite( " \t{" );
- j = 16; if( mwHead->size < 16 ) j = (int) mwHead->size;
- for( i=0;i<16;i++ ) {
- if( i<j ) mwWrite( "%02X ",
- (unsigned char) *(data+mwOverflowZoneSize+i) );
- else mwWrite( ".. " );
- }
- for( i=0;i<j;i++ ) {
- c = *(data+mwOverflowZoneSize+i);
- if( c < 32 || c > 126 ) c = '.';
- mwWrite( "%c", c );
- }
- mwWrite( "}\n" );
- mw = mwHead;
- mwUnlink( mw, __FILE__, __LINE__ );
- free( mw );
- }
- else {
- data = ((char*)mwHead) + mwDataSize + mwOverflowZoneSize;
- if( mwTestMem( data, mwHead->size, MW_VAL_NML ) ) {
- mwErrors++;
- mwWrite( "wild pointer: <%ld> NoMansLand %p alloc'd at %s(%d)\n",
- mwHead->count, data + mwOverflowZoneSize, mwHead->file, mwHead->line );
- FLUSH();
- }
- mwNmlNumAlloc --;
- mwNmlCurAlloc -= mwHead->size;
- mw = mwHead;
- mwUnlink( mw, __FILE__, __LINE__ );
- free( mw );
- }
- }
-
- if( mwNmlNumAlloc ) mwWrite("internal: NoMansLand block counter %ld, not zero\n", mwNmlNumAlloc );
- if( mwNmlCurAlloc ) mwWrite("internal: NoMansLand byte counter %ld, not zero\n", mwNmlCurAlloc );
-
- /* report statistics */
- mwStatReport();
- FLUSH();
-
- mwInited = 0;
- mwHead = mwTail = NULL;
- if( mwErrors )
- fprintf(mwSTDERR,"MEMWATCH detected %ld anomalies\n",mwErrors);
- mwLogFile( NULL );
- mwErrors = 0;
-
- MW_MUTEX_TERM();
-
- }
-
-void mwTerm( void ) {
- if( mwInited == 1 )
- {
- mwAbort();
- return;
- }
- if( !mwInited )
- mwWrite("internal: mwTerm(): MEMWATCH has not been started!\n");
- else
- mwInited --;
- }
-
-void mwStatistics( int level )
-{
- mwAutoInit();
- if( level<0 ) level=0;
- if( mwStatLevel != level )
- {
- mwWrite( "statistics: now collecting on a %s basis\n",
- level<1?"global":(level<2?"module":"line") );
- mwStatLevel = level;
- }
-}
-
-void mwAutoCheck( int onoff ) {
- mwAutoInit();
- mwTestAlways = onoff;
- if( onoff ) mwTestFlags = MW_TEST_ALL;
- }
-
-void mwSetOutFunc( void (*func)(int) ) {
- mwAutoInit();
- mwOutFunction = func;
- }
-
-static void mwWriteOF( void *p )
-{
- int i;
- unsigned char *ptr;
- ptr = (unsigned char*) p;
- for( i=0; i<mwOverflowZoneSize; i++ )
- {
- *(ptr+i) = mwOverflowZoneTemplate[i%8];
- }
- return;
-}
-
-static int mwCheckOF( const void *p )
-{
- int i;
- const unsigned char *ptr;
- ptr = (const unsigned char *) p;
- for( i=0; i<mwOverflowZoneSize; i++ )
- {
- if( *(ptr+i) != mwOverflowZoneTemplate[i%8] )
- return 1; /* errors found */
- }
- return 0; /* no errors */
-}
-
-int mwTest( const char *file, int line, int items ) {
- mwAutoInit();
- mwTestFlags = items;
- return mwTestNow( file, line, 0 );
- }
-
-/*
-** Returns zero if there are no errors.
-** Returns nonzero if there are errors.
-*/
-int mwTestBuffer( const char *file, int line, void *p ) {
- mwData* mw;
-
- mwAutoInit();
-
- /* do the quick ownership test */
- mw = (mwData*) mwBUFFER_TO_MW( p );
-
- if( mwIsOwned( mw, file, line ) ) {
- return mwTestBuf( mw, file, line );
- }
- return 1;
- }
-
-void mwBreakOut( const char* cause ) {
- fprintf(mwSTDERR, "breakout: %s\n", cause);
- mwWrite("breakout: %s\n", cause );
- return;
- }
-
-/*
-** 981217 JLI: is it possible that ->next is not always set?
-*/
-void * mwMark( void *p, const char *desc, const char *file, unsigned line ) {
- mwMarker *mrk;
- unsigned n, isnew;
- char *buf;
- int tot, oflow = 0;
- char wherebuf[128];
-
- mwAutoInit();
- TESTS(NULL,0);
-
- if( desc == NULL ) desc = "unknown";
- if( file == NULL ) file = "unknown";
-
- tot = sprintf( wherebuf, "%.48s called from %s(%d)", desc, file, line );
- if( tot >= (int)sizeof(wherebuf) ) { wherebuf[sizeof(wherebuf)-1] = 0; oflow = 1; }
-
- if( p == NULL ) {
- mwWrite("mark: %s(%d), no mark for NULL:'%s' may be set\n", file, line, desc );
- return p;
- }
-
- if( mwFirstMark != NULL && !mwIsReadAddr( mwFirstMark, sizeof( mwMarker ) ) )
- {
- mwWrite("mark: %s(%d), mwFirstMark (%p) is trashed, can't mark for %s\n",
- file, line, mwFirstMark, desc );
- return p;
- }
-
- for( mrk=mwFirstMark; mrk; mrk=mrk->next )
- {
- if( mrk->next != NULL && !mwIsReadAddr( mrk->next, sizeof( mwMarker ) ) )
- {
- mwWrite("mark: %s(%d), mark(%p)->next(%p) is trashed, can't mark for %s\n",
- file, line, mrk, mrk->next, desc );
- return p;
- }
- if( mrk->host == p ) break;
- }
-
- if( mrk == NULL ) {
- isnew = 1;
- mrk = (mwMarker*) malloc( sizeof( mwMarker ) );
- if( mrk == NULL ) {
- mwWrite("mark: %s(%d), no mark for %p:'%s', out of memory\n", file, line, p, desc );
- return p;
- }
- mrk->next = NULL;
- n = 0;
- }
- else {
- isnew = 0;
- n = strlen( mrk->text );
- }
-
- n += strlen( wherebuf );
- buf = (char*) malloc( n+3 );
- if( buf == NULL ) {
- if( isnew ) free( mrk );
- mwWrite("mark: %s(%d), no mark for %p:'%s', out of memory\n", file, line, p, desc );
- return p;
- }
-
- if( isnew ) {
- memcpy( buf, wherebuf, n+1 );
- mrk->next = mwFirstMark;
- mrk->host = p;
- mrk->text = buf;
- mrk->level = 1;
- mwFirstMark = mrk;
- }
- else {
- strcpy( buf, mrk->text );
- strcat( buf, ", " );
- strcat( buf, wherebuf );
- free( mrk->text );
- mrk->text = buf;
- mrk->level ++;
- }
-
- if( oflow ) {
- mwIncErr();
- mwTrace( " [WARNING: OUTPUT BUFFER OVERFLOW - SYSTEM UNSTABLE]\n" );
- }
- return p;
- }
-
-void* mwUnmark( void *p, const char *file, unsigned line ) {
- mwMarker *mrk, *prv;
- mrk = mwFirstMark;
- prv = NULL;
- while( mrk ) {
- if( mrk->host == p ) {
- if( mrk->level < 2 ) {
- if( prv ) prv->next = mrk->next;
- else mwFirstMark = mrk->next;
- free( mrk->text );
- free( mrk );
- return p;
- }
- mrk->level --;
- return p;
- }
- prv = mrk;
- mrk = mrk->next;
- }
- mwWrite("mark: %s(%d), no mark found for %p\n", file, line, p );
- return p;
- }
-
-
-/***********************************************************************
-** Abort/Retry/Ignore handlers
-***********************************************************************/
-
-static int mwARI( const char *estr ) {
- char inbuf[81];
- int c;
- fprintf(mwSTDERR, "\n%s\nMEMWATCH: Abort, Retry or Ignore? ", estr);
- (void) fgets(inbuf,sizeof(inbuf),stdin);
- for( c=0; inbuf[c] && inbuf[c] <= ' '; c++ ) ;
- c = inbuf[c];
- if( c == 'R' || c == 'r' ) {
- mwBreakOut( estr );
- return MW_ARI_RETRY;
- }
- if( c == 'I' || c == 'i' ) return MW_ARI_IGNORE;
- return MW_ARI_ABORT;
- }
-
-/* standard ARI handler (exported) */
-int mwAriHandler( const char *estr ) {
- mwAutoInit();
- return mwARI( estr );
- }
-
-/* used to set the ARI function */
-void mwSetAriFunc( int (*func)(const char *) ) {
- mwAutoInit();
- mwAriFunction = func;
- }
-
-/***********************************************************************
-** Allocation handlers
-***********************************************************************/
-
-void* mwMalloc( size_t size, const char* file, int line) {
- size_t needed;
- mwData *mw;
- char *ptr;
- void *p;
-
- mwAutoInit();
-
- MW_MUTEX_LOCK();
-
- TESTS(file,line);
-
- mwCounter ++;
- needed = mwDataSize + mwOverflowZoneSize*2 + size;
- if( needed < size )
- {
- /* theoretical case: req size + mw overhead exceeded size_t limits */
- return NULL;
- }
-
- /* if this allocation would violate the limit, fail it */
- if( mwUseLimit && ((long)size + mwStatCurAlloc > mwAllocLimit) ) {
- mwWrite( "limit fail: <%ld> %s(%d), %ld wanted %ld available\n",
- mwCounter, file, line, (long)size, mwAllocLimit - mwStatCurAlloc );
- mwIncErr();
- FLUSH();
- MW_MUTEX_UNLOCK();
- return NULL;
- }
-
- mw = (mwData*) malloc( needed );
- if( mw == NULL ) {
- if( mwFreeUp(needed,0) >= needed ) {
- mw = (mwData*) malloc(needed);
- if( mw == NULL ) {
- mwWrite( "internal: mwFreeUp(%u) reported success, but malloc() fails\n", needed );
- mwIncErr();
- FLUSH();
- }
- }
- if( mw == NULL ) {
- mwWrite( "fail: <%ld> %s(%d), %ld wanted %ld allocated\n",
- mwCounter, file, line, (long)size, mwStatCurAlloc );
- mwIncErr();
- FLUSH();
- MW_MUTEX_UNLOCK();
- return NULL;
- }
- }
-
- mw->count = mwCounter;
- mw->prev = NULL;
- mw->next = mwHead;
- mw->file = file;
- mw->size = size;
- mw->line = line;
- mw->flag = 0;
- mw->check = CHKVAL(mw);
-
- if( mwHead ) mwHead->prev = mw;
- mwHead = mw;
- if( mwTail == NULL ) mwTail = mw;
-
- ptr = ((char*)mw) + mwDataSize;
- mwWriteOF( ptr ); /* '*(long*)ptr = PRECHK;' */
- ptr += mwOverflowZoneSize;
- p = ptr;
- memset( ptr, MW_VAL_NEW, size );
- ptr += size;
- mwWriteOF( ptr ); /* '*(long*)ptr = POSTCHK;' */
-
- mwNumCurAlloc ++;
- mwStatCurAlloc += (long) size;
- mwStatTotAlloc += (long) size;
- if( mwStatCurAlloc > mwStatMaxAlloc )
- mwStatMaxAlloc = mwStatCurAlloc;
- mwStatNumAlloc ++;
-
- if( mwStatLevel ) mwStatAlloc( size, file, line );
-
- MW_MUTEX_UNLOCK();
- return p;
- }
-
-void* mwRealloc( void *p, size_t size, const char* file, int line) {
- int oldUseLimit, i;
- mwData *mw;
- char *ptr;
-
- mwAutoInit();
-
- if( p == NULL ) return mwMalloc( size, file, line );
- if( size == 0 ) { mwFree( p, file, line ); return NULL; }
-
- MW_MUTEX_LOCK();
-
- /* do the quick ownership test */
- mw = (mwData*) mwBUFFER_TO_MW( p );
- if( mwIsOwned( mw, file, line ) ) {
-
- /* if the buffer is an NML, treat this as a double-free */
- if( mw->flag & MW_NML )
- {
- mwIncErr();
- if( *((unsigned char*)(mw)+mwDataSize+mwOverflowZoneSize) != MW_VAL_NML )
- {
- mwWrite( "internal: <%ld> %s(%d), no-mans-land MW-%p is corrupted\n",
- mwCounter, file, line, mw );
- }
- goto check_dbl_free;
- }
-
- /* if this allocation would violate the limit, fail it */
- if( mwUseLimit && ((long)size + mwStatCurAlloc - (long)mw->size > mwAllocLimit) ) {
- TESTS(file,line);
- mwCounter ++;
- mwWrite( "limit fail: <%ld> %s(%d), %ld wanted %ld available\n",
- mwCounter, file, line, (unsigned long)size - mw->size, mwAllocLimit - mwStatCurAlloc );
- mwIncErr();
- FLUSH();
- MW_MUTEX_UNLOCK();
- return NULL;
- }
-
- /* fake realloc operation */
- oldUseLimit = mwUseLimit;
- mwUseLimit = 0;
- ptr = (char*) mwMalloc( size, file, line );
- if( ptr != NULL ) {
- if( size < mw->size )
- memcpy( ptr, p, size );
- else
- memcpy( ptr, p, mw->size );
- mwFree( p, file, line );
- }
- mwUseLimit = oldUseLimit;
- MW_MUTEX_UNLOCK();
- return (void*) ptr;
- }
-
- /* Unknown pointer! */
-
- /* using free'd pointer? */
-check_dbl_free:
- for(i=0;i<MW_FREE_LIST;i++) {
- if( mwLastFree[i] == p ) {
- mwIncErr();
- mwWrite( "realloc: <%ld> %s(%d), %p was"
- " freed from %s(%d)\n",
- mwCounter, file, line, p,
- mwLFfile[i], mwLFline[i] );
- FLUSH();
- MW_MUTEX_UNLOCK();
- return NULL;
- }
- }
-
- /* some weird pointer */
- mwIncErr();
- mwWrite( "realloc: <%ld> %s(%d), unknown pointer %p\n",
- mwCounter, file, line, p );
- FLUSH();
- MW_MUTEX_UNLOCK();
- return NULL;
- }
-
-char *mwStrdup( const char* str, const char* file, int line ) {
- size_t len;
- char *newstring;
-
- MW_MUTEX_LOCK();
-
- if( str == NULL ) {
- mwIncErr();
- mwWrite( "strdup: <%ld> %s(%d), strdup(NULL) called\n",
- mwCounter, file, line );
- FLUSH();
- MW_MUTEX_UNLOCK();
- return NULL;
- }
-
- len = strlen( str ) + 1;
- newstring = (char*) mwMalloc( len, file, line );
- if( newstring != NULL ) memcpy( newstring, str, len );
- MW_MUTEX_UNLOCK();
- return newstring;
- }
-
-void mwFree( void* p, const char* file, int line ) {
- int i;
- mwData* mw;
- char buffer[ sizeof(mwData) + (mwROUNDALLOC*3) + 64 ];
-
- /* this code is in support of C++ delete */
- if( file == NULL ) {
- mwFree_( p );
- MW_MUTEX_UNLOCK();
- return;
- }
-
- mwAutoInit();
-
- MW_MUTEX_LOCK();
- TESTS(file,line);
- mwCounter ++;
-
- /* on NULL free, write a warning and return */
- if( p == NULL ) {
- mwWrite( "NULL free: <%ld> %s(%d), NULL pointer free'd\n",
- mwCounter, file, line );
- FLUSH();
- MW_MUTEX_UNLOCK();
- return;
- }
-
- /* do the quick ownership test */
- mw = (mwData*) mwBUFFER_TO_MW( p );
-
- if( mwIsOwned( mw, file, line ) ) {
- (void) mwTestBuf( mw, file, line );
-
- /* if the buffer is an NML, treat this as a double-free */
- if( mw->flag & MW_NML )
- {
- if( *(((unsigned char*)mw)+mwDataSize+mwOverflowZoneSize) != MW_VAL_NML )
- {
- mwWrite( "internal: <%ld> %s(%d), no-mans-land MW-%p is corrupted\n",
- mwCounter, file, line, mw );
- }
- goto check_dbl_free;
- }
-
- /* update the statistics */
- mwNumCurAlloc --;
- mwStatCurAlloc -= (long) mw->size;
- if( mwStatLevel ) mwStatFree( mw->size, mw->file, mw->line );
-
- /* we should either free the allocation or keep it as NML */
- if( mwNML ) {
- mw->flag |= MW_NML;
- mwNmlNumAlloc ++;
- mwNmlCurAlloc += (long) mw->size;
- memset( ((char*)mw)+mwDataSize+mwOverflowZoneSize, MW_VAL_NML, mw->size );
- }
- else {
- /* unlink the allocation, and enter the post-free data */
- mwUnlink( mw, file, line );
- memset( mw, MW_VAL_DEL,
- mw->size + mwDataSize+mwOverflowZoneSize+mwOverflowZoneSize );
- if( mwFBI ) {
- memset( mw, '.', mwDataSize + mwOverflowZoneSize );
- sprintf( buffer, "FBI<%ld>%s(%d)", mwCounter, file, line );
- strncpy( (char*)(void*)mw, buffer, mwDataSize + mwOverflowZoneSize );
- }
- free( mw );
- }
-
- /* add the pointer to the last-free track */
- mwLFfile[ mwLFcur ] = file;
- mwLFline[ mwLFcur ] = line;
- mwLastFree[ mwLFcur++ ] = p;
- if( mwLFcur == MW_FREE_LIST ) mwLFcur = 0;
-
- MW_MUTEX_UNLOCK();
- return;
- }
-
- /* check for double-freeing */
-check_dbl_free:
- for(i=0;i<MW_FREE_LIST;i++) {
- if( mwLastFree[i] == p ) {
- mwIncErr();
- mwWrite( "double-free: <%ld> %s(%d), %p was"
- " freed from %s(%d)\n",
- mwCounter, file, line, p,
- mwLFfile[i], mwLFline[i] );
- FLUSH();
- MW_MUTEX_UNLOCK();
- return;
- }
- }
-
- /* some weird pointer... block the free */
- mwIncErr();
- mwWrite( "WILD free: <%ld> %s(%d), unknown pointer %p\n",
- mwCounter, file, line, p );
- FLUSH();
- MW_MUTEX_UNLOCK();
- return;
- }
-
-void* mwCalloc( size_t a, size_t b, const char *file, int line ) {
- void *p;
- size_t size = a * b;
- p = mwMalloc( size, file, line );
- if( p == NULL ) return NULL;
- memset( p, 0, size );
- return p;
- }
-
-void mwFree_( void *p ) {
- MW_MUTEX_LOCK();
- TESTS(NULL,0);
- MW_MUTEX_UNLOCK();
- free(p);
- }
-
-void* mwMalloc_( size_t size ) {
- MW_MUTEX_LOCK();
- TESTS(NULL,0);
- MW_MUTEX_UNLOCK();
- return malloc( size );
- }
-
-void* mwRealloc_( void *p, size_t size ) {
- MW_MUTEX_LOCK();
- TESTS(NULL,0);
- MW_MUTEX_UNLOCK();
- return realloc( p, size );
- }
-
-void* mwCalloc_( size_t a, size_t b ) {
- MW_MUTEX_LOCK();
- TESTS(NULL,0);
- MW_MUTEX_UNLOCK();
- return calloc( a, b );
- }
-
-void mwFlushNow( void ) {
- if( mwLogR() ) fflush( mwLogR() );
- return;
- }
-
-void mwDoFlush( int onoff ) {
- mwFlushW( onoff<1?0:onoff );
- if( onoff ) if( mwLogR() ) fflush( mwLogR() );
- return;
- }
-
-void mwLimit( long lim ) {
- TESTS(NULL,0);
- mwWrite("limit: old limit = ");
- if( !mwAllocLimit ) mwWrite( "none" );
- else mwWrite( "%ld bytes", mwAllocLimit );
- mwWrite( ", new limit = ");
- if( !lim ) {
- mwWrite( "none\n" );
- mwUseLimit = 0;
- }
- else {
- mwWrite( "%ld bytes\n", lim );
- mwUseLimit = 1;
- }
- mwAllocLimit = lim;
- FLUSH();
- }
-
-void mwSetAriAction( int action ) {
- MW_MUTEX_LOCK();
- TESTS(NULL,0);
- mwAriAction = action;
- MW_MUTEX_UNLOCK();
- return;
- }
-
-int mwAssert( int exp, const char *exps, const char *fn, int ln ) {
- int i;
- char buffer[MW_TRACE_BUFFER+8];
- if( exp ) {
- return 0;
- }
- mwAutoInit();
- MW_MUTEX_LOCK();
- TESTS(fn,ln);
- mwIncErr();
- mwCounter++;
- mwWrite( "assert trap: <%ld> %s(%d), %s\n", mwCounter, fn, ln, exps );
- if( mwAriFunction != NULL ) {
- sprintf( buffer, "MEMWATCH: assert trap: %s(%d), %s", fn, ln, exps );
- i = (*mwAriFunction)(buffer);
- switch( i ) {
- case MW_ARI_IGNORE:
- mwWrite( "assert trap: <%ld> IGNORED - execution continues\n", mwCounter );
- MW_MUTEX_UNLOCK();
- return 0;
- case MW_ARI_RETRY:
- mwWrite( "assert trap: <%ld> RETRY - executing again\n", mwCounter );
- MW_MUTEX_UNLOCK();
- return 1;
- }
- }
- else {
- if( mwAriAction & MW_ARI_IGNORE ) {
- mwWrite( "assert trap: <%ld> AUTO IGNORED - execution continues\n", mwCounter );
- MW_MUTEX_UNLOCK();
- return 0;
- }
- fprintf(mwSTDERR,"\nMEMWATCH: assert trap: %s(%d), %s\n", fn, ln, exps );
- }
-
- FLUSH();
- (void) mwTestNow( fn, ln, 1 );
- FLUSH();
-
- if( mwAriAction & MW_ARI_NULLREAD ) {
- /* This is made in an attempt to kick in */
- /* any debuggers or OS stack traces */
- FLUSH();
- /*lint -save -e413 */
- i = *((int*)NULL);
- mwDummy( (char)i );
- /*lint -restore */
- }
-
- MW_MUTEX_UNLOCK();
- exit(255);
- /* NOT REACHED - the return statement is in to keep */
- /* stupid compilers from squeaking about differing return modes. */
- /* Smart compilers instead say 'code unreachable...' */
- /*lint -save -e527 */
- return 0;
- /*lint -restore */
- }
-
-int mwVerify( int exp, const char *exps, const char *fn, int ln ) {
- int i;
- char buffer[MW_TRACE_BUFFER+8];
- if( exp ) {
- return 0;
- }
- mwAutoInit();
- MW_MUTEX_LOCK();
- TESTS(fn,ln);
- mwIncErr();
- mwCounter++;
- mwWrite( "verify trap: <%ld> %s(%d), %s\n", mwCounter, fn, ln, exps );
- if( mwAriFunction != NULL ) {
- sprintf( buffer, "MEMWATCH: verify trap: %s(%d), %s", fn, ln, exps );
- i = (*mwAriFunction)(buffer);
- if( i == 0 ) {
- mwWrite( "verify trap: <%ld> IGNORED - execution continues\n", mwCounter );
- MW_MUTEX_UNLOCK();
- return 0;
- }
- if( i == 1 ) {
- mwWrite( "verify trap: <%ld> RETRY - executing again\n", mwCounter );
- MW_MUTEX_UNLOCK();
- return 1;
- }
- }
- else {
- if( mwAriAction & MW_ARI_NULLREAD ) {
- /* This is made in an attempt to kick in */
- /* any debuggers or OS stack traces */
- FLUSH();
- /*lint -save -e413 */
- i = *((int*)NULL);
- mwDummy( (char)i );
- /*lint -restore */
- }
- if( mwAriAction & MW_ARI_IGNORE ) {
- mwWrite( "verify trap: <%ld> AUTO IGNORED - execution continues\n", mwCounter );
- MW_MUTEX_UNLOCK();
- return 0;
- }
- fprintf(mwSTDERR,"\nMEMWATCH: verify trap: %s(%d), %s\n", fn, ln, exps );
- }
- FLUSH();
- (void) mwTestNow( fn, ln, 1 );
- FLUSH();
- MW_MUTEX_UNLOCK();
- exit(255);
- /* NOT REACHED - the return statement is in to keep */
- /* stupid compilers from squeaking about differing return modes. */
- /* Smart compilers instead say 'code unreachable...' */
- /*lint -save -e527 */
- return 0;
- /*lint -restore */
- }
-
-void mwTrace( const char *format, ... ) {
- int tot, oflow = 0;
- va_list mark;
-
- mwAutoInit();
- MW_MUTEX_LOCK();
- TESTS(NULL,0);
- if( mwOutFunction == NULL ) mwOutFunction = mwDefaultOutFunc;
-
- va_start( mark, format );
- tot = vsprintf( mwPrintBuf, format, mark );
- va_end( mark );
- if( tot >= MW_TRACE_BUFFER ) { mwPrintBuf[MW_TRACE_BUFFER] = 0; oflow = 1; }
- for(tot=0;mwPrintBuf[tot];tot++)
- (*mwOutFunction)( mwPrintBuf[tot] );
- if( oflow ) {
- mwIncErr();
- mwTrace( " [WARNING: OUTPUT BUFFER OVERFLOW - SYSTEM UNSTABLE]\n" );
- }
-
- FLUSH();
- MW_MUTEX_UNLOCK();
- }
-
-
-/***********************************************************************
-** Grab & Drop
-***********************************************************************/
-
-unsigned mwGrab( unsigned kb ) {
- TESTS(NULL,0);
- return mwGrab_( kb, MW_VAL_GRB, 0 );
- }
-
-unsigned mwDrop( unsigned kb ) {
- TESTS(NULL,0);
- return mwDrop_( kb, MW_VAL_GRB, 0 );
- }
-
-static void mwDropAll() {
- TESTS(NULL,0);
- (void) mwDrop_( 0, MW_VAL_GRB, 0 );
- (void) mwDrop_( 0, MW_VAL_NML, 0 );
- if( mwGrabList != NULL )
- mwWrite( "internal: the grab list is not empty after mwDropAll()\n");
- }
-
-static const char *mwGrabType( int type ) {
- switch( type ) {
- case MW_VAL_GRB:
- return "grabbed";
- case MW_VAL_NML:
- return "no-mans-land";
- default:
- /* do nothing */
- ;
- }
- return "<unknown type>";
- }
-
-static unsigned mwGrab_( unsigned kb, int type, int silent ) {
- unsigned i = kb;
- mwGrabData *gd;
- if( !kb ) i = kb = 65000U;
-
- for(;kb;kb--) {
- if( mwUseLimit &&
- (mwStatCurAlloc + mwGrabSize + (long)sizeof(mwGrabData) > mwAllocLimit) ) {
- if( !silent ) {
- mwWrite("grabbed: all allowed memory to %s (%u kb)\n",
- mwGrabType(type), i-kb);
- FLUSH();
- }
- return i-kb;
- }
- gd = (mwGrabData*) malloc( sizeof(mwGrabData) );
- if( gd == NULL ) {
- if( !silent ) {
- mwWrite("grabbed: all available memory to %s (%u kb)\n",
- mwGrabType(type), i-kb);
- FLUSH();
- }
- return i-kb;
- }
- mwGrabSize += (long) sizeof(mwGrabData);
- gd->next = mwGrabList;
- memset( gd->blob, type, sizeof(gd->blob) );
- gd->type = type;
- mwGrabList = gd;
- }
- if( !silent ) {
- mwWrite("grabbed: %u kilobytes of %s memory\n", i, mwGrabType(type) );
- FLUSH();
- }
- return i;
- }
-
-static unsigned mwDrop_( unsigned kb, int type, int silent ) {
- unsigned i = kb;
- mwGrabData *gd,*tmp,*pr;
- const void *p;
-
- if( mwGrabList == NULL && kb == 0 ) return 0;
- if( !kb ) i = kb = 60000U;
-
- pr = NULL;
- gd = mwGrabList;
- for(;kb;) {
- if( gd == NULL ) {
- if( i-kb > 0 && !silent ) {
- mwWrite("dropped: all %s memory (%u kb)\n", mwGrabType(type), i-kb);
- FLUSH();
- }
- return i-kb;
- }
- if( gd->type == type ) {
- if( pr ) pr->next = gd->next;
- kb --;
- tmp = gd;
- if( mwGrabList == gd ) mwGrabList = gd->next;
- gd = gd->next;
- p = mwTestMem( tmp->blob, sizeof( tmp->blob ), type );
- if( p != NULL ) {
- mwWrite( "wild pointer: <%ld> %s memory hit at %p\n",
- mwCounter, mwGrabType(type), p );
- FLUSH();
- }
- mwGrabSize -= (long) sizeof(mwGrabData);
- free( tmp );
- }
- else {
- pr = gd;
- gd = gd->next;
- }
- }
- if( !silent ) {
- mwWrite("dropped: %u kilobytes of %s memory\n", i, mwGrabType(type) );
- FLUSH();
- }
- return i;
- }
-
-/***********************************************************************
-** No-Mans-Land
-***********************************************************************/
-
-void mwNoMansLand( int level ) {
- mwAutoInit();
- TESTS(NULL,0);
- switch( level ) {
- case MW_NML_NONE:
- (void) mwDrop_( 0, MW_VAL_NML, 0 );
- break;
- case MW_NML_FREE:
- break;
- case MW_NML_ALL:
- (void) mwGrab_( 0, MW_VAL_NML, 0 );
- break;
- default:
- return;
- }
- mwNML = level;
- }
-
-/***********************************************************************
-** Static functions
-***********************************************************************/
-
-static void mwAutoInit( void )
-{
- if( mwInited ) return;
- mwUseAtexit = 1;
- mwInit();
- return;
-}
-
-static FILE *mwLogR() {
- if( (mwLog == mwLogB1) && (mwLog == mwLogB2) ) return mwLog;
- if( mwLog == mwLogB1 ) mwLogB2 = mwLog;
- if( mwLog == mwLogB2 ) mwLogB1 = mwLog;
- if( mwLogB1 == mwLogB2 ) mwLog = mwLogB1;
- if( (mwLog == mwLogB1) && (mwLog == mwLogB2) ) {
- mwWrite("internal: log file handle damaged and recovered\n");
- FLUSH();
- return mwLog;
- }
- fprintf(mwSTDERR,"\nMEMWATCH: log file handle destroyed, using mwSTDERR\n" );
- mwLog = mwLogB1 = mwLogB2 = mwSTDERR;
- return mwSTDERR;
- }
-
-static void mwLogW( FILE *p ) {
- mwLog = mwLogB1 = mwLogB2 = p;
- }
-
-static int mwFlushR() {
- if( (mwFlushing == mwFlushingB1) && (mwFlushing == mwFlushingB2) ) return mwFlushing;
- if( mwFlushing == mwFlushingB1 ) mwFlushingB2 = mwFlushing;
- if( mwFlushing == mwFlushingB2 ) mwFlushingB1 = mwFlushing;
- if( mwFlushingB1 == mwFlushingB2 ) mwFlushing = mwFlushingB1;
- if( (mwFlushing == mwFlushingB1) && (mwFlushing == mwFlushingB2) ) {
- mwWrite("internal: flushing flag damaged and recovered\n");
- FLUSH();
- return mwFlushing;
- }
- mwWrite("internal: flushing flag destroyed, so set to true\n");
- mwFlushing = mwFlushingB1 = mwFlushingB2 = 1;
- return 1;
- }
-
-static void mwFlushW( int n ) {
- mwFlushing = mwFlushingB1 = mwFlushingB2 = n;
- }
-
-static void mwIncErr() {
- mwErrors++;
- mwFlushW( mwFlushR()+1 );
- FLUSH();
- }
-
-static void mwFlush() {
- if( mwLogR() == NULL ) return;
-#ifdef MW_FLUSH
- fflush( mwLogR() );
-#else
- if( mwFlushR() ) fflush( mwLogR() );
-#endif
- return;
- }
-
-static void mwUnlink( mwData* mw, const char* file, int line ) {
- if( mw->prev == NULL ) {
- if( mwHead != mw )
- mwWrite( "internal: <%ld> %s(%d), MW-%p: link1 NULL, but not head\n",
- mwCounter, file, line, mw );
- mwHead = mw->next;
- }
- else {
- if( mw->prev->next != mw )
- mwWrite( "internal: <%ld> %s(%d), MW-%p: link1 failure\n",
- mwCounter, file, line, mw );
- else mw->prev->next = mw->next;
- }
- if( mw->next == NULL ) {
- if( mwTail != mw )
- mwWrite( "internal: <%ld> %s(%d), MW-%p: link2 NULL, but not tail\n",
- mwCounter, file, line, mw );
- mwTail = mw->prev;
- }
- else {
- if( mw->next->prev != mw )
- mwWrite( "internal: <%ld> %s(%d), MW-%p: link2 failure\n",
- mwCounter, file, line, mw );
- else mw->next->prev = mw->prev;
- }
- }
-
-/*
-** Relinking tries to repair a damaged mw block.
-** Returns nonzero if it thinks it successfully
-** repaired the heap chain.
-*/
-static int mwRelink( mwData* mw, const char* file, int line ) {
- int fails;
- mwData *mw1, *mw2;
- long count, size;
- mwStat *ms;
-
- if( file == NULL ) file = "unknown";
-
- if( mw == NULL ) {
- mwWrite("relink: cannot repair MW at NULL\n");
- FLUSH();
- goto emergency;
- }
-
- if( !mwIsSafeAddr(mw, mwDataSize) ) {
- mwWrite("relink: MW-%p is a garbage pointer\n", mw);
- FLUSH();
- goto emergency;
- }
-
- mwWrite("relink: <%ld> %s(%d) attempting to repair MW-%p...\n", mwCounter, file, line, mw );
- FLUSH();
- fails = 0;
-
- /* Repair from head */
- if( mwHead != mw ) {
- if( !mwIsSafeAddr( mwHead, mwDataSize ) ) {
- mwWrite("relink: failed for MW-%p; head pointer destroyed\n", mw );
- FLUSH();
- goto emergency;
- }
- for( mw1=mwHead; mw1; mw1=mw1->next ) {
- if( mw1->next == mw ) {
- mw->prev = mw1;
- break;
- }
- if( mw1->next &&
- ( !mwIsSafeAddr(mw1->next, mwDataSize ) || mw1->next->prev != mw1) ) {
- mwWrite("relink: failed for MW-%p; forward chain fragmented at MW-%p: 'next' is %p\n", mw, mw1, mw1->next );
- FLUSH();
- goto emergency;
- }
- }
- if( mw1 == NULL ) {
- mwWrite("relink: MW-%p not found in forward chain search\n", mw );
- FLUSH();
- fails ++;
- }
- }
- else
- {
- mwWrite( "relink: MW-%p is the head (first) allocation\n", mw );
- if( mw->prev != NULL )
- {
- mwWrite( "relink: MW-%p prev pointer is non-NULL, you have a wild pointer\n", mw );
- mw->prev = NULL;
- }
- }
-
- /* Repair from tail */
- if( mwTail != mw ) {
- if( !mwIsSafeAddr( mwTail, mwDataSize ) ) {
- mwWrite("relink: failed for MW-%p; tail pointer destroyed\n", mw );
- FLUSH();
- goto emergency;
- }
- for( mw1=mwTail; mw1; mw1=mw1->prev ) {
- if( mw1->prev == mw ) {
- mw->next = mw1;
- break;
- }
- if( mw1->prev && (!mwIsSafeAddr(mw1->prev, mwDataSize ) || mw1->prev->next != mw1) ) {
- mwWrite("relink: failed for MW-%p; reverse chain fragmented at MW-%p, 'prev' is %p\n", mw, mw1, mw1->prev );
- FLUSH();
- goto emergency;
- }
- }
- if( mw1 == NULL ) {
- mwWrite("relink: MW-%p not found in reverse chain search\n", mw );
- FLUSH();
- fails ++;
- }
- }
- else
- {
- mwWrite( "relink: MW-%p is the tail (last) allocation\n", mw );
- if( mw->next != NULL )
- {
- mwWrite( "relink: MW-%p next pointer is non-NULL, you have a wild pointer\n", mw );
- mw->next = NULL;
- }
- }
-
- if( fails > 1 ) {
- mwWrite("relink: heap appears intact, MW-%p probably garbage pointer\n", mw );
- FLUSH();
- goto verifyok;
- }
-
- /* restore MW info where possible */
- if( mwIsReadAddr( mw->file, 1 ) ) {
- ms = mwStatGet( mw->file, -1, 0 );
- if( ms == NULL ) mw->file = "<relinked>";
- }
- mw->check = CHKVAL(mw);
- goto verifyok;
-
- /* Emergency repair */
- emergency:
-
- if( mwHead == NULL && mwTail == NULL )
- {
- if( mwStatCurAlloc == 0 )
- mwWrite("relink: <%ld> %s(%d) heap is empty, nothing to repair\n", mwCounter, file, line );
- else
- mwWrite("relink: <%ld> %s(%d) heap damaged beyond repair\n", mwCounter, file, line );
- FLUSH();
- return 0;
- }
-
- mwWrite("relink: <%ld> %s(%d) attempting emergency repairs...\n", mwCounter, file, line );
- FLUSH();
-
- if( mwHead == NULL || mwTail == NULL )
- {
- if( mwHead == NULL ) mwWrite("relink: mwHead is NULL, but mwTail is %p\n", mwTail );
- else mwWrite("relink: mwTail is NULL, but mwHead is %p\n", mwHead );
- }
-
- mw1=NULL;
- if( mwHead != NULL )
- {
- if( !mwIsReadAddr( mwHead, mwDataSize ) || mwHead->check != CHKVAL(mwHead) )
- {
- mwWrite("relink: mwHead (MW-%p) is damaged, skipping forward scan\n", mwHead );
- mwHead = NULL;
- goto scan_reverse;
- }
- if( mwHead->prev != NULL )
- {
- mwWrite("relink: the mwHead pointer's 'prev' member is %p, not NULL\n", mwHead->prev );
- }
- for( mw1=mwHead; mw1; mw1=mw1->next )
- {
- if( mw1->next )
- {
- if( !mwIsReadAddr(mw1->next,mwDataSize) ||
- !mw1->next->check != CHKVAL(mw1) ||
- mw1->next->prev != mw1 )
- {
- mwWrite("relink: forward chain's last intact MW is MW-%p, %ld %sbytes at %s(%d)\n",
- mw1, mw1->size, (mw->flag & MW_NML)?"NoMansLand ":"", mw1->file, mw1->line );
- if( mwIsReadAddr(mw1->next,mwDataSize ) )
- {
- mwWrite("relink: forward chain's first damaged MW is MW-%p, %ld %sbytes at %s(%d)\n",
- mw1->next, mw1->size, (mw->flag & MW_NML)?"NoMansLand ":"",
- mwIsReadAddr(mw1->file,16)?mw1->file:"<garbage-pointer>", mw1->line );
- }
- else
- {
- mwWrite("relink: the 'next' pointer of this MW points to %p, which is out-of-legal-access\n",
- mw1->next );
- }
- break;
- }
- }
- }
- }
-
-
-scan_reverse:
- mw2=NULL;
- if( mwTail != NULL )
- {
- if( !mwIsReadAddr(mwTail,mwDataSize) || mwTail->check != CHKVAL(mwTail) )
- {
- mwWrite("relink: mwTail (%p) is damaged, skipping reverse scan\n", mwTail );
- mwTail = NULL;
- goto analyze;
- }
- if( mwTail->next != NULL )
- {
- mwWrite("relink: the mwTail pointer's 'next' member is %p, not NULL\n", mwTail->next );
- }
- for( mw2=mwTail; mw2; mw2=mw2->prev )
- {
- if( mw2->prev )
- {
- if( !mwIsReadAddr(mw2->prev,mwDataSize) ||
- !mw2->prev->check != CHKVAL(mw2) ||
- mw2->prev->next != mw2 )
- {
- mwWrite("relink: reverse chain's last intact MW is MW-%p, %ld %sbytes at %s(%d)\n",
- mw2, mw2->size, (mw->flag & MW_NML)?"NoMansLand ":"", mw2->file, mw2->line );
- if( mwIsReadAddr(mw2->prev,mwDataSize ) )
- {
- mwWrite("relink: reverse chain's first damaged MW is MW-%p, %ld %sbytes at %s(%d)\n",
- mw2->prev, mw2->size, (mw->flag & MW_NML)?"NoMansLand ":"",
- mwIsReadAddr(mw2->file,16)?mw2->file:"<garbage-pointer>", mw2->line );
- }
- else
- {
- mwWrite("relink: the 'prev' pointer of this MW points to %p, which is out-of-legal-access\n",
- mw2->prev );
- }
- break;
- }
- }
- }
- }
-
-analyze:
- if( mwHead == NULL && mwTail == NULL )
- {
- mwWrite("relink: both head and tail pointers damaged, aborting program\n");
- mwFlushW(1);
- FLUSH();
- abort();
- }
- if( mwHead == NULL )
- {
- mwHead = mw2;
- mwWrite("relink: heap truncated, MW-%p designated as new mwHead\n", mw2 );
- mw2->prev = NULL;
- mw1 = mw2 = NULL;
- }
- if( mwTail == NULL )
- {
- mwTail = mw1;
- mwWrite("relink: heap truncated, MW-%p designated as new mwTail\n", mw1 );
- mw1->next = NULL;
- mw1 = mw2 = NULL;
- }
- if( mw1 == NULL && mw2 == NULL &&
- mwHead->prev == NULL && mwTail->next == NULL ) {
- mwWrite("relink: verifying heap integrity...\n" );
- FLUSH();
- goto verifyok;
- }
- if( mw1 && mw2 && mw1 != mw2 ) {
- mw1->next = mw2;
- mw2->prev = mw1;
- mwWrite("relink: emergency repairs successful, assessing damage...\n");
- FLUSH();
- }
- else {
- mwWrite("relink: heap totally destroyed, aborting program\n");
- mwFlushW(1);
- FLUSH();
- abort();
- }
-
- /* Verify by checking that the number of active allocations */
- /* match the number of entries in the chain */
-verifyok:
- if( !mwIsHeapOK( NULL ) ) {
- mwWrite("relink: heap verification FAILS - aborting program\n");
- mwFlushW(1);
- FLUSH();
- abort();
- }
- for( size=count=0, mw1=mwHead; mw1; mw1=mw1->next ) {
- count ++;
- size += (long) mw1->size;
- }
- if( count == mwNumCurAlloc ) {
- mwWrite("relink: successful, ");
- if( size == mwStatCurAlloc ) {
- mwWrite("no allocations lost\n");
- }
- else {
- if( mw != NULL ) {
- mwWrite("size information lost for MW-%p\n", mw);
- mw->size = 0;
- }
- }
- }
- else {
- mwWrite("relink: partial, %ld MW-blocks of %ld bytes lost\n",
- mwNmlNumAlloc+mwNumCurAlloc-count, mwNmlCurAlloc+mwStatCurAlloc-size );
- return 0;
- }
-
- return 1;
- }
-
-/*
-** If mwData* is NULL:
-** Returns 0 if heap chain is broken.
-** Returns 1 if heap chain is intact.
-** If mwData* is not NULL:
-** Returns 0 if mwData* is missing or if chain is broken.
-** Returns 1 if chain is intact and mwData* is found.
-*/
-static int mwIsHeapOK( mwData *includes_mw ) {
- int found = 0;
- mwData *mw;
-
- for( mw = mwHead; mw; mw=mw->next ) {
- if( includes_mw == mw ) found++;
- if( !mwIsSafeAddr( mw, mwDataSize ) ) return 0;
- if( mw->prev ) {
- if( !mwIsSafeAddr( mw->prev, mwDataSize ) ) return 0;
- if( mw==mwHead || mw->prev->next != mw ) return 0;
- }
- if( mw->next ) {
- if( !mwIsSafeAddr( mw->next, mwDataSize ) ) return 0;
- if( mw==mwTail || mw->next->prev != mw ) return 0;
- }
- else if( mw!=mwTail ) return 0;
- }
-
- if( includes_mw != NULL && !found ) return 0;
-
- return 1;
- }
-
-static int mwIsOwned( mwData* mw, const char *file, int line ) {
- int retv;
- mwStat *ms;
-
- /* see if the address is legal according to OS */
- if( !mwIsSafeAddr( mw, mwDataSize ) ) return 0;
-
- /* make sure we have _anything_ allocated */
- if( mwHead == NULL && mwTail == NULL && mwStatCurAlloc == 0 )
- return 0;
-
- /* calculate checksum */
- if( mw->check != CHKVAL(mw) ) {
- /* may be damaged checksum, see if block is in heap */
- if( mwIsHeapOK( mw ) ) {
- /* damaged checksum, repair it */
- mwWrite( "internal: <%ld> %s(%d), checksum for MW-%p is incorrect\n",
- mwCounter, file, line, mw );
- mwIncErr();
- if( mwIsReadAddr( mw->file, 1 ) ) {
- ms = mwStatGet( mw->file, -1, 0 );
- if( ms == NULL ) mw->file = "<relinked>";
- }
- else mw->file = "<unknown>";
- mw->size = 0;
- mw->check = CHKVAL(mw);
- return 1;
- }
- /* no, it's just some garbage data */
- return 0;
- }
-
- /* check that the non-NULL pointers are safe */
- if( mw->prev && !mwIsSafeAddr( mw->prev, mwDataSize ) ) mwRelink( mw, file, line );
- if( mw->next && !mwIsSafeAddr( mw->next, mwDataSize ) ) mwRelink( mw, file, line );
-
- /* safe address, checksum OK, proceed with heap checks */
-
- /* see if the block is in the heap */
- retv = 0;
- if( mw->prev ) { if( mw->prev->next == mw ) retv ++; }
- else { if( mwHead == mw ) retv++; }
- if( mw->next ) { if( mw->next->prev == mw ) retv ++; }
- else { if( mwTail == mw ) retv++; }
- if( mw->check == CHKVAL(mw) ) retv ++;
- if( retv > 2 ) return 1;
-
- /* block not in heap, check heap for corruption */
-
- if( !mwIsHeapOK( mw ) ) {
- if( mwRelink( mw, file, line ) )
- return 1;
- }
-
- /* unable to repair */
- mwWrite( "internal: <%ld> %s(%d), mwIsOwned fails for MW-%p\n",
- mwCounter, file, line, mw );
- mwIncErr();
-
- return 0;
- }
-
-/*
-** mwTestBuf:
-** Checks a buffers links and pre/postfixes.
-** Writes errors found to the log.
-** Returns zero if no errors found.
-*/
-static int mwTestBuf( mwData* mw, const char* file, int line ) {
- int retv = 0;
- char *p;
-
- if( file == NULL ) file = "unknown";
-
- if( !mwIsSafeAddr( mw, mwDataSize + mwOverflowZoneSize ) ) {
- mwWrite( "internal: <%ld> %s(%d): pointer MW-%p is invalid\n",
- mwCounter, file, line, mw );
- mwIncErr();
- return 2;
- }
-
- if( mw->check != CHKVAL(mw) ) {
- mwWrite( "internal: <%ld> %s(%d), info trashed; relinking\n",
- mwCounter, file, line );
- mwIncErr();
- if( !mwRelink( mw, file, line ) ) return 2;
- }
-
- if( mw->prev && mw->prev->next != mw ) {
- mwWrite( "internal: <%ld> %s(%d), buffer <%ld> %s(%d) link1 broken\n",
- mwCounter,file,line, (long)mw->size, mw->count, mw->file, mw->line );
- mwIncErr();
- if( !mwRelink( mw, file, line ) ) retv = 2;
- }
- if( mw->next && mw->next->prev != mw ) {
- mwWrite( "internal: <%ld> %s(%d), buffer <%ld> %s(%d) link2 broken\n",
- mwCounter,file,line, (long)mw->size, mw->count, mw->file, mw->line );
- mwIncErr();
- if( !mwRelink( mw, file, line ) ) retv = 2;
- }
-
- p = ((char*)mw) + mwDataSize;
- if( mwCheckOF( p ) ) {
- mwWrite( "underflow: <%ld> %s(%d), %ld bytes alloc'd at <%ld> %s(%d)\n",
- mwCounter,file,line, (long)mw->size, mw->count, mw->file, mw->line );
- mwIncErr();
- retv = 1;
- }
- p += mwOverflowZoneSize + mw->size;
- if( mwIsReadAddr( p, mwOverflowZoneSize ) && mwCheckOF( p ) ) {
- mwWrite( "overflow: <%ld> %s(%d), %ld bytes alloc'd at <%ld> %s(%d)\n",
- mwCounter,file,line, (long)mw->size, mw->count, mw->file, mw->line );
- mwIncErr();
- retv = 1;
- }
-
- return retv;
- }
-
-static void mwDefaultOutFunc( int c ) {
- if( mwLogR() ) fputc( c, mwLogR() );
- }
-
-static void mwWrite( const char *format, ... ) {
- int tot, oflow = 0;
- va_list mark;
- mwAutoInit();
- if( mwOutFunction == NULL ) mwOutFunction = mwDefaultOutFunc;
- va_start( mark, format );
- tot = vsprintf( mwPrintBuf, format, mark );
- va_end( mark );
- if( tot >= MW_TRACE_BUFFER ) { mwPrintBuf[MW_TRACE_BUFFER] = 0; oflow = 1; }
- for(tot=0;mwPrintBuf[tot];tot++)
- (*mwOutFunction)( mwPrintBuf[tot] );
- if( oflow ) {
- mwWrite( "\ninternal: mwWrite(): WARNING! OUTPUT EXCEEDED %u CHARS: SYSTEM UNSTABLE\n", MW_TRACE_BUFFER-1 );
- FLUSH();
- }
- return;
- }
-
-static void mwLogFile( const char *name ) {
- time_t tid;
- (void) time( &tid );
- if( mwLogR() != NULL ) {
- fclose( mwLogR() );
- mwLogW( NULL );
- }
- if( name == NULL ) return;
- mwLogW( fopen( name, "a" COMMIT ) );
- if( mwLogR() == NULL )
- mwWrite( "logfile: failed to open/create file '%s'\n", name );
- }
-
-/*
-** Try to free NML memory until a contiguous allocation of
-** 'needed' bytes can be satisfied. If this is not enough
-** and the 'urgent' parameter is nonzero, grabbed memory is
-** also freed.
-*/
-static size_t mwFreeUp( size_t needed, int urgent ) {
- void *p;
- mwData *mw, *mw2;
- char *data;
-
- /* free grabbed NML memory */
- for(;;) {
- if( mwDrop_( 1, MW_VAL_NML, 1 ) == 0 ) break;
- p = malloc( needed );
- if( p == NULL ) continue;
- free( p );
- return needed;
- }
-
- /* free normal NML memory */
- mw = mwHead;
- while( mw != NULL ) {
- if( !(mw->flag & MW_NML) ) mw = mw->next;
- else {
- data = ((char*)mw)+mwDataSize+mwOverflowZoneSize;
- if( mwTestMem( data, mw->size, MW_VAL_NML ) ) {
- mwIncErr();
- mwWrite( "wild pointer: <%ld> NoMansLand %p alloc'd at %s(%d)\n",
- mw->count, data + mwOverflowZoneSize, mw->file, mw->line );
- }
- mw2 = mw->next;
- mwUnlink( mw, "mwFreeUp", 0 );
- free( mw );
- mw = mw2;
- p = malloc( needed );
- if( p == NULL ) continue;
- free( p );
- return needed;
- }
- }
-
- /* if not urgent (for internal purposes), fail */
- if( !urgent ) return 0;
-
- /* free grabbed memory */
- for(;;) {
- if( mwDrop_( 1, MW_VAL_GRB, 1 ) == 0 ) break;
- p = malloc( needed );
- if( p == NULL ) continue;
- free( p );
- return needed;
- }
-
- return 0;
- }
-
-static const void * mwTestMem( const void *p, unsigned len, int c ) {
- const unsigned char *ptr;
- ptr = (const unsigned char *) p;
- while( len-- ) {
- if( *ptr != (unsigned char)c ) return (const void*)ptr;
- ptr ++;
- }
- return NULL;
- }
-
-static int mwStrCmpI( const char *s1, const char *s2 ) {
- if( s1 == NULL || s2 == NULL ) return 0;
- while( *s1 ) {
- if( toupper(*s2) == toupper(*s1) ) { s1++; s2++; continue; }
- return 1;
- }
- return 0;
- }
-
-#define AIPH() if( always_invoked ) { mwWrite("autocheck: <%ld> %s(%d) ", mwCounter, file, line ); always_invoked = 0; }
-
-static int mwTestNow( const char *file, int line, int always_invoked ) {
- int retv = 0;
- mwData *mw;
- char *data;
-
- if( file && !always_invoked )
- mwWrite("check: <%ld> %s(%d), checking %s%s%s\n",
- mwCounter, file, line,
- (mwTestFlags & MW_TEST_CHAIN) ? "chain ": "",
- (mwTestFlags & MW_TEST_ALLOC) ? "alloc ": "",
- (mwTestFlags & MW_TEST_NML) ? "nomansland ": ""
- );
-
- if( mwTestFlags & MW_TEST_CHAIN ) {
- for( mw = mwHead; mw; mw=mw->next ) {
- if( !mwIsSafeAddr(mw, mwDataSize) ) {
- AIPH();
- mwWrite("check: heap corruption detected\n");
- mwIncErr();
- return retv + 1;
- }
- if( mw->prev ) {
- if( !mwIsSafeAddr(mw->prev, mwDataSize) ) {
- AIPH();
- mwWrite("check: heap corruption detected\n");
- mwIncErr();
- return retv + 1;
- }
- if( mw==mwHead || mw->prev->next != mw ) {
- AIPH();
- mwWrite("check: heap chain broken, prev link incorrect\n");
- mwIncErr();
- retv ++;
- }
- }
- if( mw->next ) {
- if( !mwIsSafeAddr(mw->next, mwDataSize) ) {
- AIPH();
- mwWrite("check: heap corruption detected\n");
- mwIncErr();
- return retv + 1;
- }
- if( mw==mwTail || mw->next->prev != mw ) {
- AIPH();
- mwWrite("check: heap chain broken, next link incorrect\n");
- mwIncErr();
- retv ++;
- }
- }
- else if( mw!=mwTail ) {
- AIPH();
- mwWrite("check: heap chain broken, tail incorrect\n");
- mwIncErr();
- retv ++;
- }
- }
- }
- if( mwTestFlags & MW_TEST_ALLOC ) {
- for( mw = mwHead; mw; mw=mw->next ) {
- if( mwTestBuf( mw, file, line ) ) retv ++;
- }
- }
- if( mwTestFlags & MW_TEST_NML ) {
- for( mw = mwHead; mw; mw=mw->next ) {
- if( (mw->flag & MW_NML) ) {
- data = ((char*)mw)+mwDataSize+mwOverflowZoneSize;
- if( mwTestMem( data, mw->size, MW_VAL_NML ) ) {
- mwIncErr();
- mwWrite( "wild pointer: <%ld> NoMansLand %p alloc'd at %s(%d)\n",
- mw->count, data + mwOverflowZoneSize, mw->file, mw->line );
- }
- }
- }
- }
-
-
- if( file && !always_invoked && !retv )
- mwWrite("check: <%ld> %s(%d), complete; no errors\n",
- mwCounter, file, line );
- return retv;
- }
-
-/**********************************************************************
-** Statistics
-**********************************************************************/
-
-static void mwStatReport()
-{
- mwStat* ms, *ms2;
- const char *modname;
- int modnamelen;
-
- /* global statistics report */
- mwWrite( "\nMemory usage statistics (global):\n" );
- mwWrite( " N)umber of allocations made: %ld\n", mwStatNumAlloc );
- mwWrite( " L)argest memory usage : %ld\n", mwStatMaxAlloc );
- mwWrite( " T)otal of all alloc() calls: %ld\n", mwStatTotAlloc );
- mwWrite( " U)nfreed bytes totals : %ld\n", mwStatCurAlloc );
- FLUSH();
-
- if( mwStatLevel < 1 ) return;
-
- /* on a per-module basis */
- mwWrite( "\nMemory usage statistics (detailed):\n");
- mwWrite( " Module/Line Number Largest Total Unfreed \n");
- for( ms=mwStatList; ms; ms=ms->next )
- {
- if( ms->line == -1 )
- {
- if( ms->file == NULL || !mwIsReadAddr(ms->file,22) ) modname = "<unknown>";
- else modname = ms->file;
- modnamelen = strlen(modname);
- if( modnamelen > 42 )
- {
- modname = modname + modnamelen - 42;
- }
-
- mwWrite(" %-42s %-8ld %-8ld %-8ld %-8ld\n",
- modname, ms->num, ms->max, ms->total, ms->curr );
- if( ms->file && mwStatLevel > 1 )
- {
- for( ms2=mwStatList; ms2; ms2=ms2->next )
- {
- if( ms2->line!=-1 && ms2->file!=NULL && !mwStrCmpI( ms2->file, ms->file ) )
- {
- mwWrite( " %-8d %-8ld %-8ld %-8ld %-8ld\n",
- ms2->line, ms2->num, ms2->max, ms2->total, ms2->curr );
- }
- }
- }
- }
- }
-}
-
-static mwStat* mwStatGet( const char *file, int line, int makenew ) {
- mwStat* ms;
-
- if( mwStatLevel < 2 ) line = -1;
-
- for( ms=mwStatList; ms!=NULL; ms=ms->next ) {
- if( line != ms->line ) continue;
- if( file==NULL ) {
- if( ms->file == NULL ) break;
- continue;
- }
- if( ms->file == NULL ) continue;
- if( !strcmp( ms->file, file ) ) break;
- }
-
- if( ms != NULL ) return ms;
-
- if( !makenew ) return NULL;
-
- ms = (mwStat*) malloc( sizeof(mwStat) );
- if( ms == NULL ) {
- if( mwFreeUp( sizeof(mwStat), 0 ) < sizeof(mwStat) ||
- (ms=(mwStat*)malloc(sizeof(mwStat))) == NULL ) {
- mwWrite("internal: memory low, statistics incomplete for '%s'\n", file );
- return NULL;
- }
- }
- ms->file = file;
- ms->line = line;
- ms->total = 0L;
- ms->max = 0L;
- ms->num = 0L;
- ms->curr = 0L;
- ms->next = mwStatList;
- mwStatList = ms;
- return ms;
- }
-
-static void mwStatAlloc( size_t size, const char* file, int line ) {
- mwStat* ms;
-
- /* update the module statistics */
- ms = mwStatGet( file, -1, 1 );
- if( ms != NULL ) {
- ms->total += (long) size;
- ms->curr += (long) size;
- ms->num ++;
- if( ms->curr > ms->max ) ms->max = ms->curr;
- }
-
- /* update the line statistics */
- if( mwStatLevel > 1 && line != -1 && file ) {
- ms = mwStatGet( file, line, 1 );
- if( ms != NULL ) {
- ms->total += (long) size;
- ms->curr += (long) size;
- ms->num ++;
- if( ms->curr > ms->max ) ms->max = ms->curr;
- }
- }
-
- }
-
-static void mwStatFree( size_t size, const char* file, int line ) {
- mwStat* ms;
-
- /* update the module statistics */
- ms = mwStatGet( file, -1, 1 );
- if( ms != NULL ) ms->curr -= (long) size;
-
- /* update the line statistics */
- if( mwStatLevel > 1 && line != -1 && file ) {
- ms = mwStatGet( file, line, 1 );
- if( ms != NULL ) ms->curr -= (long) size;
- }
- }
-
-/***********************************************************************
-** Safe memory checkers
-**
-** Using ifdefs, implement the operating-system specific mechanism
-** of identifying a piece of memory as legal to access with read
-** and write priviliges. Default: return nonzero for non-NULL pointers.
-***********************************************************************/
-
-static char mwDummy( char c )
-{
- return c;
-}
-
-#ifndef MW_SAFEADDR
-#ifdef WIN32
-#define MW_SAFEADDR
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-int mwIsReadAddr( const void *p, unsigned len )
-{
- if( p == NULL ) return 0;
- if( IsBadReadPtr(p,len) ) return 0;
- return 1;
-}
-int mwIsSafeAddr( void *p, unsigned len )
-{
- /* NOTE: For some reason, under Win95 the IsBad... */
- /* can return false for invalid pointers. */
- if( p == NULL ) return 0;
- if( IsBadReadPtr(p,len) || IsBadWritePtr(p,len) ) return 0;
- return 1;
-}
-#endif /* WIN32 */
-#endif /* MW_SAFEADDR */
-
-#ifndef MW_SAFEADDR
-#ifdef SIGSEGV
-#define MW_SAFEADDR
-
-typedef void (*mwSignalHandlerPtr)( int );
-mwSignalHandlerPtr mwOldSIGSEGV = (mwSignalHandlerPtr) 0;
-jmp_buf mwSIGSEGVjump;
-static void mwSIGSEGV( int n );
-
-static void mwSIGSEGV( int n )
-{
- n = n;
- longjmp( mwSIGSEGVjump, 1 );
-}
-
-int mwIsReadAddr( const void *p, unsigned len )
-{
- const char *ptr;
-
- if( p == NULL ) return 0;
- if( !len ) return 1;
-
- /* set up to catch the SIGSEGV signal */
- mwOldSIGSEGV = signal( SIGSEGV, mwSIGSEGV );
-
- if( setjmp( mwSIGSEGVjump ) )
- {
- signal( SIGSEGV, mwOldSIGSEGV );
- return 0;
- }
-
- /* read all the bytes in the range */
- ptr = (const char *)p;
- ptr += len;
-
- /* the reason for this rather strange construct is that */
- /* we want to keep the number of used parameters and locals */
- /* to a minimum. if we use len for a counter gcc will complain */
- /* it may get clobbered by longjmp() at high warning levels. */
- /* it's a harmless warning, but this way we don't have to see it. */
- do
- {
- ptr --;
- if( *ptr == 0x7C ) (void) mwDummy( (char)0 );
- } while( (const void*) ptr != p );
-
- /* remove the handler */
- signal( SIGSEGV, mwOldSIGSEGV );
-
- return 1;
-}
-int mwIsSafeAddr( void *p, unsigned len )
-{
- char *ptr;
-
- if( p == NULL ) return 0;
- if( !len ) return 1;
-
- /* set up to catch the SIGSEGV signal */
- mwOldSIGSEGV = signal( SIGSEGV, mwSIGSEGV );
-
- if( setjmp( mwSIGSEGVjump ) )
- {
- signal( SIGSEGV, mwOldSIGSEGV );
- return 0;
- }
-
- /* read and write-back all the bytes in the range */
- ptr = (char *)p;
- ptr += len;
-
- /* the reason for this rather strange construct is that */
- /* we want to keep the number of used parameters and locals */
- /* to a minimum. if we use len for a counter gcc will complain */
- /* it may get clobbered by longjmp() at high warning levels. */
- /* it's a harmless warning, but this way we don't have to see it. */
- do
- {
- ptr --;
- *ptr = mwDummy( *ptr );
- } while( (void*) ptr != p );
-
- /* remove the handler */
- signal( SIGSEGV, mwOldSIGSEGV );
-
- return 1;
-}
-#endif /* SIGSEGV */
-#endif /* MW_SAFEADDR */
-
-#ifndef MW_SAFEADDR
-int mwIsReadAddr( const void *p, unsigned len )
-{
- if( p == NULL ) return 0;
- if( len == 0 ) return 1;
- return 1;
-}
-int mwIsSafeAddr( void *p, unsigned len )
-{
- if( p == NULL ) return 0;
- if( len == 0 ) return 1;
- return 1;
-}
-#endif
-
-/**********************************************************************
-** Mutex handling
-**********************************************************************/
-
-#if defined(WIN32) || defined(__WIN32__)
-
-static void mwMutexInit( void )
-{
- mwGlobalMutex = CreateMutex( NULL, FALSE, NULL);
- return;
-}
-
-static void mwMutexTerm( void )
-{
- CloseHandle( mwGlobalMutex );
- return;
-}
-
-static void mwMutexLock( void )
-{
- if( WaitForSingleObject(mwGlobalMutex, 1000 ) == WAIT_TIMEOUT )
- {
- mwWrite( "mwMutexLock: timed out, possible deadlock\n" );
- }
- return;
-}
-
-static void mwMutexUnlock( void )
-{
- ReleaseMutex( mwGlobalMutex );
- return;
-}
-
-#endif
-
-#if defined(MW_PTHREADS) || defined(HAVE_PTHREAD_H)
-
-static void mwMutexInit( void )
-{
- pthread_mutex_init( &mwGlobalMutex, NULL );
- return;
-}
-
-static void mwMutexTerm( void )
-{
- pthread_mutex_destroy( &mwGlobalMutex );
- return;
-}
-
-static void mwMutexLock( void )
-{
- pthread_mutex_lock(&mwGlobalMutex);
- return;
-}
-
-static void mwMutexUnlock( void )
-{
- pthread_mutex_unlock(&mwGlobalMutex);
- return;
-}
-
-#endif
-
-/**********************************************************************
-** C++ new & delete
-**********************************************************************/
-
-#if 0 /* 980317: disabled C++ */
-
-#ifdef __cplusplus
-#ifndef MEMWATCH_NOCPP
-
-int mwNCur = 0;
-const char *mwNFile = NULL;
-int mwNLine = 0;
-
-class MemWatch {
-public:
- MemWatch();
- ~MemWatch();
- };
-
-MemWatch::MemWatch() {
- if( mwInited ) return;
- mwUseAtexit = 0;
- mwInit();
- }
-
-MemWatch::~MemWatch() {
- if( mwUseAtexit ) return;
- mwTerm();
- }
-
-/*
-** This global new will catch all 'new' calls where MEMWATCH is
-** not active.
-*/
-void* operator new( unsigned size ) {
- mwNCur = 0;
- return mwMalloc( size, "<unknown>", 0 );
- }
-
-/*
-** This is the new operator that's called when a module uses mwNew.
-*/
-void* operator new( unsigned size, const char *file, int line ) {
- mwNCur = 0;
- return mwMalloc( size, file, line );
- }
-
-/*
-** This is the new operator that's called when a module uses mwNew[].
-** -- hjc 07/16/02
-*/
-void* operator new[] ( unsigned size, const char *file, int line ) {
- mwNCur = 0;
- return mwMalloc( size, file, line );
- }
-
-/*
-** Since this delete operator will recieve ALL delete's
-** even those from within libraries, we must accept
-** delete's before we've been initialized. Nor can we
-** reliably check for wild free's if the mwNCur variable
-** is not set.
-*/
-void operator delete( void *p ) {
- if( p == NULL ) return;
- if( !mwInited ) {
- free( p );
- return;
- }
- if( mwNCur ) {
- mwFree( p, mwNFile, mwNLine );
- mwNCur = 0;
- return;
- }
- mwFree_( p );
- }
-
-void operator delete[]( void *p ) {
- if( p == NULL ) return;
- if( !mwInited ) {
- free( p );
- return;
- }
- if( mwNCur ) {
- mwFree( p, mwNFile, mwNLine );
- mwNCur = 0;
- return;
- }
- mwFree_( p );
- }
-
-#endif /* MEMWATCH_NOCPP */
-#endif /* __cplusplus */
-
-#endif /* 980317: disabled C++ */
-
-/* MEMWATCH.C */
|