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/*
* Summary: interface for the memory allocator
* Description: provides interfaces for the memory allocator,
* including debugging capabilities.
*
* Copy: See Copyright for the status of this software.
*
* Author: Daniel Veillard
*/
#ifndef __DEBUG_MEMORY_ALLOC__
#define __DEBUG_MEMORY_ALLOC__
#include <stdio.h>
#include <libxml/xmlversion.h>
/**
* DEBUG_MEMORY:
*
* DEBUG_MEMORY replaces the allocator with a collect and debug
* shell to the libc allocator.
* DEBUG_MEMORY should only be activated when debugging
* libxml i.e. if libxml has been configured with --with-debug-mem too.
*/
/* #define DEBUG_MEMORY_FREED */
/* #define DEBUG_MEMORY_LOCATION */
#ifdef DEBUG
#ifndef DEBUG_MEMORY
#define DEBUG_MEMORY
#endif
#endif
/**
* DEBUG_MEMORY_LOCATION:
*
* DEBUG_MEMORY_LOCATION should be activated only when debugging
* libxml i.e. if libxml has been configured with --with-debug-mem too.
*/
#ifdef DEBUG_MEMORY_LOCATION
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* The XML memory wrapper support 4 basic overloadable functions.
*/
/**
* xmlFreeFunc:
* @mem: an already allocated block of memory
*
* Signature for a free() implementation.
*/
typedef void (XMLCALL *xmlFreeFunc)(void *mem);
/**
* xmlMallocFunc:
* @size: the size requested in bytes
*
* Signature for a malloc() implementation.
*
* Returns a pointer to the newly allocated block or NULL in case of error.
*/
typedef void *(XMLCALL *xmlMallocFunc)(size_t size);
/**
* xmlReallocFunc:
* @mem: an already allocated block of memory
* @size: the new size requested in bytes
*
* Signature for a realloc() implementation.
*
* Returns a pointer to the newly reallocated block or NULL in case of error.
*/
typedef void *(XMLCALL *xmlReallocFunc)(void *mem, size_t size);
/**
* xmlStrdupFunc:
* @str: a zero terminated string
*
* Signature for an strdup() implementation.
*
* Returns the copy of the string or NULL in case of error.
*/
typedef char *(XMLCALL *xmlStrdupFunc)(const char *str);
/*
* The 4 interfaces used for all memory handling within libxml.
LIBXML_DLL_IMPORT extern xmlFreeFunc xmlFree;
LIBXML_DLL_IMPORT extern xmlMallocFunc xmlMalloc;
LIBXML_DLL_IMPORT extern xmlMallocFunc xmlMallocAtomic;
LIBXML_DLL_IMPORT extern xmlReallocFunc xmlRealloc;
LIBXML_DLL_IMPORT extern xmlStrdupFunc xmlMemStrdup;
*/
/*
* The way to overload the existing functions.
* The xmlGc function have an extra entry for atomic block
* allocations useful for garbage collected memory allocators
*/
XMLPUBFUN int XMLCALL
xmlMemSetup (xmlFreeFunc freeFunc,
xmlMallocFunc mallocFunc,
xmlReallocFunc reallocFunc,
xmlStrdupFunc strdupFunc);
XMLPUBFUN int XMLCALL
xmlMemGet (xmlFreeFunc *freeFunc,
xmlMallocFunc *mallocFunc,
xmlReallocFunc *reallocFunc,
xmlStrdupFunc *strdupFunc);
XMLPUBFUN int XMLCALL
xmlGcMemSetup (xmlFreeFunc freeFunc,
xmlMallocFunc mallocFunc,
xmlMallocFunc mallocAtomicFunc,
xmlReallocFunc reallocFunc,
xmlStrdupFunc strdupFunc);
XMLPUBFUN int XMLCALL
xmlGcMemGet (xmlFreeFunc *freeFunc,
xmlMallocFunc *mallocFunc,
xmlMallocFunc *mallocAtomicFunc,
xmlReallocFunc *reallocFunc,
xmlStrdupFunc *strdupFunc);
/*
* Initialization of the memory layer.
*/
XMLPUBFUN int XMLCALL
xmlInitMemory (void);
/*
* Cleanup of the memory layer.
*/
XMLPUBFUN void XMLCALL
xmlCleanupMemory (void);
/*
* These are specific to the XML debug memory wrapper.
*/
XMLPUBFUN int XMLCALL
xmlMemUsed (void);
XMLPUBFUN void XMLCALL
xmlMemDisplay (FILE *fp);
XMLPUBFUN void XMLCALL
xmlMemShow (FILE *fp, int nr);
XMLPUBFUN void XMLCALL
xmlMemoryDump (void);
XMLPUBFUN void * XMLCALL
xmlMemMalloc (size_t size);
XMLPUBFUN void * XMLCALL
xmlMemRealloc (void *ptr,size_t size);
XMLPUBFUN void XMLCALL
xmlMemFree (void *ptr);
XMLPUBFUN char * XMLCALL
xmlMemoryStrdup (const char *str);
XMLPUBFUN void * XMLCALL
xmlMallocLoc (size_t size, const char *file, int line);
XMLPUBFUN void * XMLCALL
xmlReallocLoc (void *ptr, size_t size, const char *file, int line);
XMLPUBFUN void * XMLCALL
xmlMallocAtomicLoc (size_t size, const char *file, int line);
XMLPUBFUN char * XMLCALL
xmlMemStrdupLoc (const char *str, const char *file, int line);
#ifdef DEBUG_MEMORY_LOCATION
/**
* xmlMalloc:
* @size: number of bytes to allocate
*
* Wrapper for the malloc() function used in the XML library.
*
* Returns the pointer to the allocated area or NULL in case of error.
*/
#define xmlMalloc(size) xmlMallocLoc((size), __FILE__, __LINE__)
/**
* xmlMallocAtomic:
* @size: number of bytes to allocate
*
* Wrapper for the malloc() function used in the XML library for allocation
* of block not containing pointers to other areas.
*
* Returns the pointer to the allocated area or NULL in case of error.
*/
#define xmlMallocAtomic(size) xmlMallocAtomicLoc((size), __FILE__, __LINE__)
/**
* xmlRealloc:
* @ptr: pointer to the existing allocated area
* @size: number of bytes to allocate
*
* Wrapper for the realloc() function used in the XML library.
*
* Returns the pointer to the allocated area or NULL in case of error.
*/
#define xmlRealloc(ptr, size) xmlReallocLoc((ptr), (size), __FILE__, __LINE__)
/**
* xmlMemStrdup:
* @str: pointer to the existing string
*
* Wrapper for the strdup() function, xmlStrdup() is usually preferred.
*
* Returns the pointer to the allocated area or NULL in case of error.
*/
#define xmlMemStrdup(str) xmlMemStrdupLoc((str), __FILE__, __LINE__)
#endif /* DEBUG_MEMORY_LOCATION */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#ifndef __XML_GLOBALS_H
#ifndef __XML_THREADS_H__
#include <libxml/threads.h>
#include <libxml/globals.h>
#endif
#endif
#endif /* __DEBUG_MEMORY_ALLOC__ */
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