/*
* 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>
#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 (*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 *(LIBXML_ATTR_ALLOC_SIZE(1) *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 *(*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 *(*xmlStrdupFunc)(const char *str);
/*
* In general the memory allocation entry points are not kept
* thread specific but this can be overridden by LIBXML_THREAD_ALLOC_ENABLED
* - xmlMalloc
* - xmlMallocAtomic
* - xmlRealloc
* - xmlMemStrdup
* - xmlFree
*/
/** DOC_DISABLE */
#ifdef LIBXML_THREAD_ALLOC_ENABLED
#define XML_GLOBALS_ALLOC \
XML_OP(xmlMalloc, xmlMallocFunc, XML_NO_ATTR) \
XML_OP(xmlMallocAtomic, xmlMallocFunc, XML_NO_ATTR) \
XML_OP(xmlRealloc, xmlReallocFunc, XML_NO_ATTR) \
XML_OP(xmlFree, xmlFreeFunc, XML_NO_ATTR) \
XML_OP(xmlMemStrdup, xmlStrdupFunc, XML_NO_ATTR)
#define XML_OP XML_DECLARE_GLOBAL
XML_GLOBALS_ALLOC
#undef XML_OP
#if defined(LIBXML_THREAD_ENABLED) && !defined(XML_GLOBALS_NO_REDEFINITION)
#define xmlMalloc XML_GLOBAL_MACRO(xmlMalloc)
#define xmlMallocAtomic XML_GLOBAL_MACRO(xmlMallocAtomic)
#define xmlRealloc XML_GLOBAL_MACRO(xmlRealloc)
#define xmlFree XML_GLOBAL_MACRO(xmlFree)
#define xmlMemStrdup XML_GLOBAL_MACRO(xmlMemStrdup)
#endif
#else
#define XML_GLOBALS_ALLOC
/** DOC_ENABLE */
XMLPUBVAR xmlMallocFunc xmlMalloc;
XMLPUBVAR xmlMallocFunc xmlMallocAtomic;
XMLPUBVAR xmlReallocFunc xmlRealloc;
XMLPUBVAR xmlFreeFunc xmlFree;
XMLPUBVAR xmlStrdupFunc xmlMemStrdup;
#endif
/*
* 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
xmlMemSetup (xmlFreeFunc freeFunc,
xmlMallocFunc mallocFunc,
xmlReallocFunc reallocFunc,
xmlStrdupFunc strdupFunc);
XMLPUBFUN int
xmlMemGet (xmlFreeFunc *freeFunc,
xmlMallocFunc *mallocFunc,
xmlReallocFunc *reallocFunc,
xmlStrdupFunc *strdupFunc);
XMLPUBFUN int
xmlGcMemSetup (xmlFreeFunc freeFunc,
xmlMallocFunc mallocFunc,
xmlMallocFunc mallocAtomicFunc,
xmlReallocFunc reallocFunc,
xmlStrdupFunc strdupFunc);
XMLPUBFUN int
xmlGcMemGet (xmlFreeFunc *freeFunc,
xmlMallocFunc *mallocFunc,
xmlMallocFunc *mallocAtomicFunc,
xmlReallocFunc *reallocFunc,
xmlStrdupFunc *strdupFunc);
/*
* Initialization of the memory layer.
*/
XML_DEPRECATED
XMLPUBFUN int
xmlInitMemory (void);
/*
* Cleanup of the memory layer.
*/
XML_DEPRECATED
XMLPUBFUN void
xmlCleanupMemory (void);
/*
* These are specific to the XML debug memory wrapper.
*/
XMLPUBFUN size_t
xmlMemSize (void *ptr);
XMLPUBFUN int
xmlMemUsed (void);
XMLPUBFUN int
xmlMemBlocks (void);
XMLPUBFUN void
xmlMemDisplay (FILE *fp);
XMLPUBFUN void
xmlMemDisplayLast(FILE *fp, long nbBytes);
XMLPUBFUN void
xmlMemShow (FILE *fp, int nr);
XMLPUBFUN void
xmlMemoryDump (void);
XMLPUBFUN void *
xmlMemMalloc (size_t size) LIBXML_ATTR_ALLOC_SIZE(1);
XMLPUBFUN void *
xmlMemRealloc (void *ptr,size_t size);
XMLPUBFUN void
xmlMemFree (void *ptr);
XMLPUBFUN char *
xmlMemoryStrdup (const char *str);
XMLPUBFUN void *
xmlMallocLoc (size_t size, const char *file, int line) LIBXML_ATTR_ALLOC_SIZE(1);
XMLPUBFUN void *
xmlReallocLoc (void *ptr, size_t size, const char *file, int line);
XMLPUBFUN void *
xmlMallocAtomicLoc (size_t size, const char *file, int line) LIBXML_ATTR_ALLOC_SIZE(1);
XMLPUBFUN char *
xmlMemStrdupLoc (const char *str, const char *file, int line);
/** DOC_DISABLE */
#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 */
/** DOC_ENABLE */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __DEBUG_MEMORY_ALLOC__ */
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