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1164 lines
26 KiB
1164 lines
26 KiB
/*
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* xmlmemory.c: libxml memory allocator wrapper.
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*
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* daniel@veillard.com
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*/
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#define IN_LIBXML
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#include "libxml.h"
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#else
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#endif
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#ifdef HAVE_CTYPE_H
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#include <ctype.h>
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#endif
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/* #define DEBUG_MEMORY */
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/**
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* MEM_LIST:
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*
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* keep track of all allocated blocks for error reporting
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* Always build the memory list !
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*/
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#ifdef DEBUG_MEMORY_LOCATION
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#ifndef MEM_LIST
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#define MEM_LIST /* keep a list of all the allocated memory blocks */
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#endif
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#endif
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#include <libxml/globals.h> /* must come before xmlmemory.h */
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#include <libxml/xmlmemory.h>
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#include <libxml/xmlerror.h>
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#include <libxml/threads.h>
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static int xmlMemInitialized = 0;
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static unsigned long debugMemSize = 0;
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static unsigned long debugMemBlocks = 0;
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static unsigned long debugMaxMemSize = 0;
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static xmlMutexPtr xmlMemMutex = NULL;
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void xmlMallocBreakpoint(void);
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/************************************************************************
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* *
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* Macros, variables and associated types *
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* *
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************************************************************************/
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#if !defined(LIBXML_THREAD_ENABLED) && !defined(LIBXML_THREAD_ALLOC_ENABLED)
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#ifdef xmlMalloc
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#undef xmlMalloc
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#endif
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#ifdef xmlRealloc
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#undef xmlRealloc
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#endif
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#ifdef xmlMemStrdup
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#undef xmlMemStrdup
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#endif
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#endif
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/*
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* Each of the blocks allocated begin with a header containing information
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*/
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#define MEMTAG 0x5aa5
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#define MALLOC_TYPE 1
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#define REALLOC_TYPE 2
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#define STRDUP_TYPE 3
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#define MALLOC_ATOMIC_TYPE 4
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#define REALLOC_ATOMIC_TYPE 5
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typedef struct memnod {
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unsigned int mh_tag;
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unsigned int mh_type;
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unsigned long mh_number;
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size_t mh_size;
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#ifdef MEM_LIST
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struct memnod *mh_next;
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struct memnod *mh_prev;
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#endif
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const char *mh_file;
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unsigned int mh_line;
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} MEMHDR;
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#ifdef SUN4
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#define ALIGN_SIZE 16
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#else
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#define ALIGN_SIZE sizeof(double)
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#endif
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#define HDR_SIZE sizeof(MEMHDR)
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#define RESERVE_SIZE (((HDR_SIZE + (ALIGN_SIZE-1)) \
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/ ALIGN_SIZE ) * ALIGN_SIZE)
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#define MAX_SIZE_T ((size_t)-1)
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#define CLIENT_2_HDR(a) ((void *) (((char *) (a)) - RESERVE_SIZE))
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#define HDR_2_CLIENT(a) ((void *) (((char *) (a)) + RESERVE_SIZE))
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static unsigned int block=0;
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static unsigned int xmlMemStopAtBlock = 0;
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static void *xmlMemTraceBlockAt = NULL;
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#ifdef MEM_LIST
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static MEMHDR *memlist = NULL;
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#endif
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static void debugmem_tag_error(void *addr);
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#ifdef MEM_LIST
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static void debugmem_list_add(MEMHDR *);
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static void debugmem_list_delete(MEMHDR *);
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#endif
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#define Mem_Tag_Err(a) debugmem_tag_error(a);
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#ifndef TEST_POINT
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#define TEST_POINT
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#endif
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/**
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* xmlMallocBreakpoint:
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*
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* Breakpoint to use in conjunction with xmlMemStopAtBlock. When the block
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* number reaches the specified value this function is called. One need to add a breakpoint
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* to it to get the context in which the given block is allocated.
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*/
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void
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xmlMallocBreakpoint(void) {
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xmlGenericError(xmlGenericErrorContext,
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"xmlMallocBreakpoint reached on block %d\n", xmlMemStopAtBlock);
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}
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/**
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* xmlMallocLoc:
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* @size: an int specifying the size in byte to allocate.
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* @file: the file name or NULL
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* @line: the line number
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*
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* a malloc() equivalent, with logging of the allocation info.
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*
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* Returns a pointer to the allocated area or NULL in case of lack of memory.
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*/
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void *
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xmlMallocLoc(size_t size, const char * file, int line)
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{
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MEMHDR *p;
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void *ret;
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if (!xmlMemInitialized) xmlInitMemory();
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#ifdef DEBUG_MEMORY
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xmlGenericError(xmlGenericErrorContext,
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"Malloc(%d)\n",size);
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#endif
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TEST_POINT
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if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
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xmlGenericError(xmlGenericErrorContext,
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"xmlMallocLoc : Unsigned overflow\n");
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xmlMemoryDump();
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return(NULL);
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}
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p = (MEMHDR *) malloc(RESERVE_SIZE+size);
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if (!p) {
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xmlGenericError(xmlGenericErrorContext,
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"xmlMallocLoc : Out of free space\n");
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xmlMemoryDump();
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return(NULL);
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}
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p->mh_tag = MEMTAG;
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p->mh_size = size;
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p->mh_type = MALLOC_TYPE;
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p->mh_file = file;
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p->mh_line = line;
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xmlMutexLock(xmlMemMutex);
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p->mh_number = ++block;
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debugMemSize += size;
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debugMemBlocks++;
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if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
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#ifdef MEM_LIST
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debugmem_list_add(p);
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#endif
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xmlMutexUnlock(xmlMemMutex);
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#ifdef DEBUG_MEMORY
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xmlGenericError(xmlGenericErrorContext,
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"Malloc(%d) Ok\n",size);
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#endif
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if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
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ret = HDR_2_CLIENT(p);
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if (xmlMemTraceBlockAt == ret) {
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xmlGenericError(xmlGenericErrorContext,
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"%p : Malloc(%lu) Ok\n", xmlMemTraceBlockAt,
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(long unsigned)size);
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xmlMallocBreakpoint();
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}
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TEST_POINT
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return(ret);
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}
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/**
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* xmlMallocAtomicLoc:
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* @size: an unsigned int specifying the size in byte to allocate.
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* @file: the file name or NULL
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* @line: the line number
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*
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* a malloc() equivalent, with logging of the allocation info.
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*
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* Returns a pointer to the allocated area or NULL in case of lack of memory.
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*/
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void *
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xmlMallocAtomicLoc(size_t size, const char * file, int line)
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{
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MEMHDR *p;
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void *ret;
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if (!xmlMemInitialized) xmlInitMemory();
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#ifdef DEBUG_MEMORY
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xmlGenericError(xmlGenericErrorContext,
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"Malloc(%d)\n",size);
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#endif
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TEST_POINT
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if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
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xmlGenericError(xmlGenericErrorContext,
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"xmlMallocAtomicLoc : Unsigned overflow\n");
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xmlMemoryDump();
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return(NULL);
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}
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p = (MEMHDR *) malloc(RESERVE_SIZE+size);
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if (!p) {
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xmlGenericError(xmlGenericErrorContext,
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"xmlMallocAtomicLoc : Out of free space\n");
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xmlMemoryDump();
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return(NULL);
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}
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p->mh_tag = MEMTAG;
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p->mh_size = size;
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p->mh_type = MALLOC_ATOMIC_TYPE;
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p->mh_file = file;
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p->mh_line = line;
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xmlMutexLock(xmlMemMutex);
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p->mh_number = ++block;
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debugMemSize += size;
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debugMemBlocks++;
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if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
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#ifdef MEM_LIST
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debugmem_list_add(p);
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#endif
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xmlMutexUnlock(xmlMemMutex);
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#ifdef DEBUG_MEMORY
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xmlGenericError(xmlGenericErrorContext,
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"Malloc(%d) Ok\n",size);
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#endif
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if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
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ret = HDR_2_CLIENT(p);
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if (xmlMemTraceBlockAt == ret) {
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xmlGenericError(xmlGenericErrorContext,
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"%p : Malloc(%lu) Ok\n", xmlMemTraceBlockAt,
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(long unsigned)size);
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xmlMallocBreakpoint();
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}
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TEST_POINT
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return(ret);
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}
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/**
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* xmlMemMalloc:
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* @size: an int specifying the size in byte to allocate.
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*
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* a malloc() equivalent, with logging of the allocation info.
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*
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* Returns a pointer to the allocated area or NULL in case of lack of memory.
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*/
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void *
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xmlMemMalloc(size_t size)
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{
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return(xmlMallocLoc(size, "none", 0));
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}
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/**
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* xmlReallocLoc:
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* @ptr: the initial memory block pointer
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* @size: an int specifying the size in byte to allocate.
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* @file: the file name or NULL
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* @line: the line number
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*
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* a realloc() equivalent, with logging of the allocation info.
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*
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* Returns a pointer to the allocated area or NULL in case of lack of memory.
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*/
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void *
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xmlReallocLoc(void *ptr,size_t size, const char * file, int line)
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{
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MEMHDR *p, *tmp;
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unsigned long number;
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#ifdef DEBUG_MEMORY
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size_t oldsize;
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#endif
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if (ptr == NULL)
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return(xmlMallocLoc(size, file, line));
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|
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if (!xmlMemInitialized) xmlInitMemory();
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TEST_POINT
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p = CLIENT_2_HDR(ptr);
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number = p->mh_number;
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if (xmlMemStopAtBlock == number) xmlMallocBreakpoint();
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if (p->mh_tag != MEMTAG) {
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Mem_Tag_Err(p);
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goto error;
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}
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p->mh_tag = ~MEMTAG;
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xmlMutexLock(xmlMemMutex);
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debugMemSize -= p->mh_size;
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debugMemBlocks--;
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#ifdef DEBUG_MEMORY
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oldsize = p->mh_size;
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#endif
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#ifdef MEM_LIST
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debugmem_list_delete(p);
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#endif
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xmlMutexUnlock(xmlMemMutex);
|
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|
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if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
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xmlGenericError(xmlGenericErrorContext,
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|
"xmlReallocLoc : Unsigned overflow\n");
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xmlMemoryDump();
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return(NULL);
|
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}
|
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|
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tmp = (MEMHDR *) realloc(p,RESERVE_SIZE+size);
|
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if (!tmp) {
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free(p);
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goto error;
|
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}
|
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p = tmp;
|
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if (xmlMemTraceBlockAt == ptr) {
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xmlGenericError(xmlGenericErrorContext,
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"%p : Realloced(%lu -> %lu) Ok\n",
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xmlMemTraceBlockAt, (long unsigned)p->mh_size,
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(long unsigned)size);
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xmlMallocBreakpoint();
|
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}
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p->mh_tag = MEMTAG;
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p->mh_number = number;
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p->mh_type = REALLOC_TYPE;
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p->mh_size = size;
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p->mh_file = file;
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p->mh_line = line;
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xmlMutexLock(xmlMemMutex);
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debugMemSize += size;
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debugMemBlocks++;
|
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if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
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#ifdef MEM_LIST
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debugmem_list_add(p);
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#endif
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xmlMutexUnlock(xmlMemMutex);
|
|
|
|
TEST_POINT
|
|
|
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#ifdef DEBUG_MEMORY
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xmlGenericError(xmlGenericErrorContext,
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"Realloced(%d to %d) Ok\n", oldsize, size);
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#endif
|
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return(HDR_2_CLIENT(p));
|
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|
|
error:
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return(NULL);
|
|
}
|
|
|
|
/**
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|
* xmlMemRealloc:
|
|
* @ptr: the initial memory block pointer
|
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* @size: an int specifying the size in byte to allocate.
|
|
*
|
|
* a realloc() equivalent, with logging of the allocation info.
|
|
*
|
|
* Returns a pointer to the allocated area or NULL in case of lack of memory.
|
|
*/
|
|
|
|
void *
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xmlMemRealloc(void *ptr,size_t size) {
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return(xmlReallocLoc(ptr, size, "none", 0));
|
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}
|
|
|
|
/**
|
|
* xmlMemFree:
|
|
* @ptr: the memory block pointer
|
|
*
|
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* a free() equivalent, with error checking.
|
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*/
|
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void
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xmlMemFree(void *ptr)
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{
|
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MEMHDR *p;
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char *target;
|
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#ifdef DEBUG_MEMORY
|
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size_t size;
|
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#endif
|
|
|
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if (ptr == NULL)
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return;
|
|
|
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if (ptr == (void *) -1) {
|
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xmlGenericError(xmlGenericErrorContext,
|
|
"trying to free pointer from freed area\n");
|
|
goto error;
|
|
}
|
|
|
|
if (xmlMemTraceBlockAt == ptr) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"%p : Freed()\n", xmlMemTraceBlockAt);
|
|
xmlMallocBreakpoint();
|
|
}
|
|
|
|
TEST_POINT
|
|
|
|
target = (char *) ptr;
|
|
|
|
p = CLIENT_2_HDR(ptr);
|
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if (p->mh_tag != MEMTAG) {
|
|
Mem_Tag_Err(p);
|
|
goto error;
|
|
}
|
|
if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
|
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p->mh_tag = ~MEMTAG;
|
|
memset(target, -1, p->mh_size);
|
|
xmlMutexLock(xmlMemMutex);
|
|
debugMemSize -= p->mh_size;
|
|
debugMemBlocks--;
|
|
#ifdef DEBUG_MEMORY
|
|
size = p->mh_size;
|
|
#endif
|
|
#ifdef MEM_LIST
|
|
debugmem_list_delete(p);
|
|
#endif
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
|
|
free(p);
|
|
|
|
TEST_POINT
|
|
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"Freed(%d) Ok\n", size);
|
|
#endif
|
|
|
|
return;
|
|
|
|
error:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlMemFree(%p) error\n", ptr);
|
|
xmlMallocBreakpoint();
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* xmlMemStrdupLoc:
|
|
* @str: the initial string pointer
|
|
* @file: the file name or NULL
|
|
* @line: the line number
|
|
*
|
|
* a strdup() equivalent, with logging of the allocation info.
|
|
*
|
|
* Returns a pointer to the new string or NULL if allocation error occurred.
|
|
*/
|
|
|
|
char *
|
|
xmlMemStrdupLoc(const char *str, const char *file, int line)
|
|
{
|
|
char *s;
|
|
size_t size = strlen(str) + 1;
|
|
MEMHDR *p;
|
|
|
|
if (!xmlMemInitialized) xmlInitMemory();
|
|
TEST_POINT
|
|
|
|
if (size > (MAX_SIZE_T - RESERVE_SIZE)) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlMemStrdupLoc : Unsigned overflow\n");
|
|
xmlMemoryDump();
|
|
return(NULL);
|
|
}
|
|
|
|
p = (MEMHDR *) malloc(RESERVE_SIZE+size);
|
|
if (!p) {
|
|
goto error;
|
|
}
|
|
p->mh_tag = MEMTAG;
|
|
p->mh_size = size;
|
|
p->mh_type = STRDUP_TYPE;
|
|
p->mh_file = file;
|
|
p->mh_line = line;
|
|
xmlMutexLock(xmlMemMutex);
|
|
p->mh_number = ++block;
|
|
debugMemSize += size;
|
|
debugMemBlocks++;
|
|
if (debugMemSize > debugMaxMemSize) debugMaxMemSize = debugMemSize;
|
|
#ifdef MEM_LIST
|
|
debugmem_list_add(p);
|
|
#endif
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
|
|
s = (char *) HDR_2_CLIENT(p);
|
|
|
|
if (xmlMemStopAtBlock == p->mh_number) xmlMallocBreakpoint();
|
|
|
|
strcpy(s,str);
|
|
|
|
TEST_POINT
|
|
|
|
if (xmlMemTraceBlockAt == s) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"%p : Strdup() Ok\n", xmlMemTraceBlockAt);
|
|
xmlMallocBreakpoint();
|
|
}
|
|
|
|
return(s);
|
|
|
|
error:
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* xmlMemoryStrdup:
|
|
* @str: the initial string pointer
|
|
*
|
|
* a strdup() equivalent, with logging of the allocation info.
|
|
*
|
|
* Returns a pointer to the new string or NULL if allocation error occurred.
|
|
*/
|
|
|
|
char *
|
|
xmlMemoryStrdup(const char *str) {
|
|
return(xmlMemStrdupLoc(str, "none", 0));
|
|
}
|
|
|
|
/**
|
|
* xmlMemUsed:
|
|
*
|
|
* Provides the amount of memory currently allocated
|
|
*
|
|
* Returns an int representing the amount of memory allocated.
|
|
*/
|
|
|
|
int
|
|
xmlMemUsed(void) {
|
|
int res;
|
|
|
|
xmlMutexLock(xmlMemMutex);
|
|
res = debugMemSize;
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
return(res);
|
|
}
|
|
|
|
/**
|
|
* xmlMemBlocks:
|
|
*
|
|
* Provides the number of memory areas currently allocated
|
|
*
|
|
* Returns an int representing the number of blocks
|
|
*/
|
|
|
|
int
|
|
xmlMemBlocks(void) {
|
|
int res;
|
|
|
|
xmlMutexLock(xmlMemMutex);
|
|
res = debugMemBlocks;
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
return(res);
|
|
}
|
|
|
|
#ifdef MEM_LIST
|
|
/**
|
|
* xmlMemContentShow:
|
|
* @fp: a FILE descriptor used as the output file
|
|
* @p: a memory block header
|
|
*
|
|
* tries to show some content from the memory block
|
|
*/
|
|
|
|
static void
|
|
xmlMemContentShow(FILE *fp, MEMHDR *p)
|
|
{
|
|
int i,j,k,len;
|
|
const char *buf;
|
|
|
|
if (p == NULL) {
|
|
fprintf(fp, " NULL");
|
|
return;
|
|
}
|
|
len = p->mh_size;
|
|
buf = (const char *) HDR_2_CLIENT(p);
|
|
|
|
for (i = 0;i < len;i++) {
|
|
if (buf[i] == 0) break;
|
|
if (!isprint((unsigned char) buf[i])) break;
|
|
}
|
|
if ((i < 4) && ((buf[i] != 0) || (i == 0))) {
|
|
if (len >= 4) {
|
|
MEMHDR *q;
|
|
void *cur;
|
|
|
|
for (j = 0;(j < len -3) && (j < 40);j += 4) {
|
|
cur = *((void **) &buf[j]);
|
|
q = CLIENT_2_HDR(cur);
|
|
p = memlist;
|
|
k = 0;
|
|
while (p != NULL) {
|
|
if (p == q) break;
|
|
p = p->mh_next;
|
|
if (k++ > 100) break;
|
|
}
|
|
if ((p != NULL) && (p == q)) {
|
|
fprintf(fp, " pointer to #%lu at index %d",
|
|
p->mh_number, j);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
} else if ((i == 0) && (buf[i] == 0)) {
|
|
fprintf(fp," null");
|
|
} else {
|
|
if (buf[i] == 0) fprintf(fp," \"%.25s\"", buf);
|
|
else {
|
|
fprintf(fp," [");
|
|
for (j = 0;j < i;j++)
|
|
fprintf(fp,"%c", buf[j]);
|
|
fprintf(fp,"]");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* xmlMemDisplayLast:
|
|
* @fp: a FILE descriptor used as the output file, if NULL, the result is
|
|
* written to the file .memorylist
|
|
* @nbBytes: the amount of memory to dump
|
|
*
|
|
* the last nbBytes of memory allocated and not freed, useful for dumping
|
|
* the memory left allocated between two places at runtime.
|
|
*/
|
|
|
|
void
|
|
xmlMemDisplayLast(FILE *fp, long nbBytes)
|
|
{
|
|
#ifdef MEM_LIST
|
|
MEMHDR *p;
|
|
unsigned idx;
|
|
int nb = 0;
|
|
#endif
|
|
FILE *old_fp = fp;
|
|
|
|
if (nbBytes <= 0)
|
|
return;
|
|
|
|
if (fp == NULL) {
|
|
fp = fopen(".memorylist", "w");
|
|
if (fp == NULL)
|
|
return;
|
|
}
|
|
|
|
#ifdef MEM_LIST
|
|
fprintf(fp," Last %li MEMORY ALLOCATED : %lu, MAX was %lu\n",
|
|
nbBytes, debugMemSize, debugMaxMemSize);
|
|
fprintf(fp,"BLOCK NUMBER SIZE TYPE\n");
|
|
idx = 0;
|
|
xmlMutexLock(xmlMemMutex);
|
|
p = memlist;
|
|
while ((p) && (nbBytes > 0)) {
|
|
fprintf(fp,"%-5u %6lu %6lu ",idx++,p->mh_number,
|
|
(unsigned long)p->mh_size);
|
|
switch (p->mh_type) {
|
|
case STRDUP_TYPE:fprintf(fp,"strdup() in ");break;
|
|
case MALLOC_TYPE:fprintf(fp,"malloc() in ");break;
|
|
case REALLOC_TYPE:fprintf(fp,"realloc() in ");break;
|
|
case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break;
|
|
case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break;
|
|
default:
|
|
fprintf(fp,"Unknown memory block, may be corrupted");
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
if (old_fp == NULL)
|
|
fclose(fp);
|
|
return;
|
|
}
|
|
if (p->mh_file != NULL) fprintf(fp,"%s(%u)", p->mh_file, p->mh_line);
|
|
if (p->mh_tag != MEMTAG)
|
|
fprintf(fp," INVALID");
|
|
nb++;
|
|
if (nb < 100)
|
|
xmlMemContentShow(fp, p);
|
|
else
|
|
fprintf(fp," skip");
|
|
|
|
fprintf(fp,"\n");
|
|
nbBytes -= (unsigned long)p->mh_size;
|
|
p = p->mh_next;
|
|
}
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
#else
|
|
fprintf(fp,"Memory list not compiled (MEM_LIST not defined !)\n");
|
|
#endif
|
|
if (old_fp == NULL)
|
|
fclose(fp);
|
|
}
|
|
|
|
/**
|
|
* xmlMemDisplay:
|
|
* @fp: a FILE descriptor used as the output file, if NULL, the result is
|
|
* written to the file .memorylist
|
|
*
|
|
* show in-extenso the memory blocks allocated
|
|
*/
|
|
|
|
void
|
|
xmlMemDisplay(FILE *fp)
|
|
{
|
|
#ifdef MEM_LIST
|
|
MEMHDR *p;
|
|
unsigned idx;
|
|
int nb = 0;
|
|
#if defined(HAVE_LOCALTIME) && defined(HAVE_STRFTIME)
|
|
time_t currentTime;
|
|
char buf[500];
|
|
struct tm * tstruct;
|
|
#endif
|
|
#endif
|
|
FILE *old_fp = fp;
|
|
|
|
if (fp == NULL) {
|
|
fp = fopen(".memorylist", "w");
|
|
if (fp == NULL)
|
|
return;
|
|
}
|
|
|
|
#ifdef MEM_LIST
|
|
#if defined(HAVE_LOCALTIME) && defined(HAVE_STRFTIME)
|
|
currentTime = time(NULL);
|
|
tstruct = localtime(¤tTime);
|
|
strftime(buf, sizeof(buf) - 1, "%I:%M:%S %p", tstruct);
|
|
fprintf(fp," %s\n\n", buf);
|
|
#endif
|
|
|
|
|
|
fprintf(fp," MEMORY ALLOCATED : %lu, MAX was %lu\n",
|
|
debugMemSize, debugMaxMemSize);
|
|
fprintf(fp,"BLOCK NUMBER SIZE TYPE\n");
|
|
idx = 0;
|
|
xmlMutexLock(xmlMemMutex);
|
|
p = memlist;
|
|
while (p) {
|
|
fprintf(fp,"%-5u %6lu %6lu ",idx++,p->mh_number,
|
|
(unsigned long)p->mh_size);
|
|
switch (p->mh_type) {
|
|
case STRDUP_TYPE:fprintf(fp,"strdup() in ");break;
|
|
case MALLOC_TYPE:fprintf(fp,"malloc() in ");break;
|
|
case REALLOC_TYPE:fprintf(fp,"realloc() in ");break;
|
|
case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break;
|
|
case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break;
|
|
default:
|
|
fprintf(fp,"Unknown memory block, may be corrupted");
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
if (old_fp == NULL)
|
|
fclose(fp);
|
|
return;
|
|
}
|
|
if (p->mh_file != NULL) fprintf(fp,"%s(%u)", p->mh_file, p->mh_line);
|
|
if (p->mh_tag != MEMTAG)
|
|
fprintf(fp," INVALID");
|
|
nb++;
|
|
if (nb < 100)
|
|
xmlMemContentShow(fp, p);
|
|
else
|
|
fprintf(fp," skip");
|
|
|
|
fprintf(fp,"\n");
|
|
p = p->mh_next;
|
|
}
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
#else
|
|
fprintf(fp,"Memory list not compiled (MEM_LIST not defined !)\n");
|
|
#endif
|
|
if (old_fp == NULL)
|
|
fclose(fp);
|
|
}
|
|
|
|
#ifdef MEM_LIST
|
|
|
|
static void debugmem_list_add(MEMHDR *p)
|
|
{
|
|
p->mh_next = memlist;
|
|
p->mh_prev = NULL;
|
|
if (memlist) memlist->mh_prev = p;
|
|
memlist = p;
|
|
#ifdef MEM_LIST_DEBUG
|
|
if (stderr)
|
|
Mem_Display(stderr);
|
|
#endif
|
|
}
|
|
|
|
static void debugmem_list_delete(MEMHDR *p)
|
|
{
|
|
if (p->mh_next)
|
|
p->mh_next->mh_prev = p->mh_prev;
|
|
if (p->mh_prev)
|
|
p->mh_prev->mh_next = p->mh_next;
|
|
else memlist = p->mh_next;
|
|
#ifdef MEM_LIST_DEBUG
|
|
if (stderr)
|
|
Mem_Display(stderr);
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* debugmem_tag_error:
|
|
*
|
|
* internal error function.
|
|
*/
|
|
|
|
static void debugmem_tag_error(void *p)
|
|
{
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"Memory tag error occurs :%p \n\t bye\n", p);
|
|
#ifdef MEM_LIST
|
|
if (stderr)
|
|
xmlMemDisplay(stderr);
|
|
#endif
|
|
}
|
|
|
|
#ifdef MEM_LIST
|
|
static FILE *xmlMemoryDumpFile = NULL;
|
|
#endif
|
|
|
|
/**
|
|
* xmlMemShow:
|
|
* @fp: a FILE descriptor used as the output file
|
|
* @nr: number of entries to dump
|
|
*
|
|
* show a show display of the memory allocated, and dump
|
|
* the @nr last allocated areas which were not freed
|
|
*/
|
|
|
|
void
|
|
xmlMemShow(FILE *fp, int nr ATTRIBUTE_UNUSED)
|
|
{
|
|
#ifdef MEM_LIST
|
|
MEMHDR *p;
|
|
#endif
|
|
|
|
if (fp != NULL)
|
|
fprintf(fp," MEMORY ALLOCATED : %lu, MAX was %lu\n",
|
|
debugMemSize, debugMaxMemSize);
|
|
#ifdef MEM_LIST
|
|
xmlMutexLock(xmlMemMutex);
|
|
if (nr > 0) {
|
|
fprintf(fp,"NUMBER SIZE TYPE WHERE\n");
|
|
p = memlist;
|
|
while ((p) && nr > 0) {
|
|
fprintf(fp,"%6lu %6lu ",p->mh_number,(unsigned long)p->mh_size);
|
|
switch (p->mh_type) {
|
|
case STRDUP_TYPE:fprintf(fp,"strdup() in ");break;
|
|
case MALLOC_TYPE:fprintf(fp,"malloc() in ");break;
|
|
case MALLOC_ATOMIC_TYPE:fprintf(fp,"atomicmalloc() in ");break;
|
|
case REALLOC_TYPE:fprintf(fp,"realloc() in ");break;
|
|
case REALLOC_ATOMIC_TYPE:fprintf(fp,"atomicrealloc() in ");break;
|
|
default:fprintf(fp," ??? in ");break;
|
|
}
|
|
if (p->mh_file != NULL)
|
|
fprintf(fp,"%s(%u)", p->mh_file, p->mh_line);
|
|
if (p->mh_tag != MEMTAG)
|
|
fprintf(fp," INVALID");
|
|
xmlMemContentShow(fp, p);
|
|
fprintf(fp,"\n");
|
|
nr--;
|
|
p = p->mh_next;
|
|
}
|
|
}
|
|
xmlMutexUnlock(xmlMemMutex);
|
|
#endif /* MEM_LIST */
|
|
}
|
|
|
|
/**
|
|
* xmlMemoryDump:
|
|
*
|
|
* Dump in-extenso the memory blocks allocated to the file .memorylist
|
|
*/
|
|
|
|
void
|
|
xmlMemoryDump(void)
|
|
{
|
|
#ifdef MEM_LIST
|
|
FILE *dump;
|
|
|
|
if (debugMaxMemSize == 0)
|
|
return;
|
|
dump = fopen(".memdump", "w");
|
|
if (dump == NULL)
|
|
xmlMemoryDumpFile = stderr;
|
|
else xmlMemoryDumpFile = dump;
|
|
|
|
xmlMemDisplay(xmlMemoryDumpFile);
|
|
|
|
if (dump != NULL) fclose(dump);
|
|
#endif /* MEM_LIST */
|
|
}
|
|
|
|
|
|
/****************************************************************
|
|
* *
|
|
* Initialization Routines *
|
|
* *
|
|
****************************************************************/
|
|
|
|
/**
|
|
* xmlInitMemory:
|
|
*
|
|
* Initialize the memory layer.
|
|
*
|
|
* Returns 0 on success
|
|
*/
|
|
int
|
|
xmlInitMemory(void)
|
|
{
|
|
#ifdef HAVE_STDLIB_H
|
|
char *breakpoint;
|
|
#endif
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlInitMemory()\n");
|
|
#endif
|
|
/*
|
|
This is really not good code (see Bug 130419). Suggestions for
|
|
improvement will be welcome!
|
|
*/
|
|
if (xmlMemInitialized) return(-1);
|
|
xmlMemInitialized = 1;
|
|
xmlMemMutex = xmlNewMutex();
|
|
|
|
#ifdef HAVE_STDLIB_H
|
|
breakpoint = getenv("XML_MEM_BREAKPOINT");
|
|
if (breakpoint != NULL) {
|
|
sscanf(breakpoint, "%ud", &xmlMemStopAtBlock);
|
|
}
|
|
#endif
|
|
#ifdef HAVE_STDLIB_H
|
|
breakpoint = getenv("XML_MEM_TRACE");
|
|
if (breakpoint != NULL) {
|
|
sscanf(breakpoint, "%p", &xmlMemTraceBlockAt);
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlInitMemory() Ok\n");
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlCleanupMemory:
|
|
*
|
|
* Free up all the memory allocated by the library for its own
|
|
* use. This should not be called by user level code.
|
|
*/
|
|
void
|
|
xmlCleanupMemory(void) {
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlCleanupMemory()\n");
|
|
#endif
|
|
if (xmlMemInitialized == 0)
|
|
return;
|
|
|
|
xmlFreeMutex(xmlMemMutex);
|
|
xmlMemMutex = NULL;
|
|
xmlMemInitialized = 0;
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlCleanupMemory() Ok\n");
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* xmlMemSetup:
|
|
* @freeFunc: the free() function to use
|
|
* @mallocFunc: the malloc() function to use
|
|
* @reallocFunc: the realloc() function to use
|
|
* @strdupFunc: the strdup() function to use
|
|
*
|
|
* Override the default memory access functions with a new set
|
|
* This has to be called before any other libxml routines !
|
|
*
|
|
* Should this be blocked if there was already some allocations
|
|
* done ?
|
|
*
|
|
* Returns 0 on success
|
|
*/
|
|
int
|
|
xmlMemSetup(xmlFreeFunc freeFunc, xmlMallocFunc mallocFunc,
|
|
xmlReallocFunc reallocFunc, xmlStrdupFunc strdupFunc) {
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlMemSetup()\n");
|
|
#endif
|
|
if (freeFunc == NULL)
|
|
return(-1);
|
|
if (mallocFunc == NULL)
|
|
return(-1);
|
|
if (reallocFunc == NULL)
|
|
return(-1);
|
|
if (strdupFunc == NULL)
|
|
return(-1);
|
|
xmlFree = freeFunc;
|
|
xmlMalloc = mallocFunc;
|
|
xmlMallocAtomic = mallocFunc;
|
|
xmlRealloc = reallocFunc;
|
|
xmlMemStrdup = strdupFunc;
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlMemSetup() Ok\n");
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlMemGet:
|
|
* @freeFunc: place to save the free() function in use
|
|
* @mallocFunc: place to save the malloc() function in use
|
|
* @reallocFunc: place to save the realloc() function in use
|
|
* @strdupFunc: place to save the strdup() function in use
|
|
*
|
|
* Provides the memory access functions set currently in use
|
|
*
|
|
* Returns 0 on success
|
|
*/
|
|
int
|
|
xmlMemGet(xmlFreeFunc *freeFunc, xmlMallocFunc *mallocFunc,
|
|
xmlReallocFunc *reallocFunc, xmlStrdupFunc *strdupFunc) {
|
|
if (freeFunc != NULL) *freeFunc = xmlFree;
|
|
if (mallocFunc != NULL) *mallocFunc = xmlMalloc;
|
|
if (reallocFunc != NULL) *reallocFunc = xmlRealloc;
|
|
if (strdupFunc != NULL) *strdupFunc = xmlMemStrdup;
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlGcMemSetup:
|
|
* @freeFunc: the free() function to use
|
|
* @mallocFunc: the malloc() function to use
|
|
* @mallocAtomicFunc: the malloc() function to use for atomic allocations
|
|
* @reallocFunc: the realloc() function to use
|
|
* @strdupFunc: the strdup() function to use
|
|
*
|
|
* Override the default memory access functions with a new set
|
|
* This has to be called before any other libxml routines !
|
|
* The mallocAtomicFunc is specialized for atomic block
|
|
* allocations (i.e. of areas useful for garbage collected memory allocators
|
|
*
|
|
* Should this be blocked if there was already some allocations
|
|
* done ?
|
|
*
|
|
* Returns 0 on success
|
|
*/
|
|
int
|
|
xmlGcMemSetup(xmlFreeFunc freeFunc, xmlMallocFunc mallocFunc,
|
|
xmlMallocFunc mallocAtomicFunc, xmlReallocFunc reallocFunc,
|
|
xmlStrdupFunc strdupFunc) {
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlGcMemSetup()\n");
|
|
#endif
|
|
if (freeFunc == NULL)
|
|
return(-1);
|
|
if (mallocFunc == NULL)
|
|
return(-1);
|
|
if (mallocAtomicFunc == NULL)
|
|
return(-1);
|
|
if (reallocFunc == NULL)
|
|
return(-1);
|
|
if (strdupFunc == NULL)
|
|
return(-1);
|
|
xmlFree = freeFunc;
|
|
xmlMalloc = mallocFunc;
|
|
xmlMallocAtomic = mallocAtomicFunc;
|
|
xmlRealloc = reallocFunc;
|
|
xmlMemStrdup = strdupFunc;
|
|
#ifdef DEBUG_MEMORY
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlGcMemSetup() Ok\n");
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlGcMemGet:
|
|
* @freeFunc: place to save the free() function in use
|
|
* @mallocFunc: place to save the malloc() function in use
|
|
* @mallocAtomicFunc: place to save the atomic malloc() function in use
|
|
* @reallocFunc: place to save the realloc() function in use
|
|
* @strdupFunc: place to save the strdup() function in use
|
|
*
|
|
* Provides the memory access functions set currently in use
|
|
* The mallocAtomicFunc is specialized for atomic block
|
|
* allocations (i.e. of areas useful for garbage collected memory allocators
|
|
*
|
|
* Returns 0 on success
|
|
*/
|
|
int
|
|
xmlGcMemGet(xmlFreeFunc *freeFunc, xmlMallocFunc *mallocFunc,
|
|
xmlMallocFunc *mallocAtomicFunc, xmlReallocFunc *reallocFunc,
|
|
xmlStrdupFunc *strdupFunc) {
|
|
if (freeFunc != NULL) *freeFunc = xmlFree;
|
|
if (mallocFunc != NULL) *mallocFunc = xmlMalloc;
|
|
if (mallocAtomicFunc != NULL) *mallocAtomicFunc = xmlMallocAtomic;
|
|
if (reallocFunc != NULL) *reallocFunc = xmlRealloc;
|
|
if (strdupFunc != NULL) *strdupFunc = xmlMemStrdup;
|
|
return(0);
|
|
}
|
|
|
|
#define bottom_xmlmemory
|
|
#include "elfgcchack.h"
|