kc3-lang/libxml2/include/libxml/xmlmemory.h

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• Hash : 3c908dca
  Author :
  Date : 2003-04-19T00:07:51
  

  added xmlMallocAtomic() to be used when allocating blocks which do not
  
  * DOCBparser.c HTMLparser.c c14n.c catalog.c encoding.c globals.c
    nanohttp.c parser.c parserInternals.c relaxng.c tree.c uri.c
    xmlmemory.c xmlreader.c xmlregexp.c xpath.c xpointer.c
    include/libxml/globals.h include/libxml/xmlmemory.h: added
    xmlMallocAtomic() to be used when allocating blocks which
    do not contains pointers, add xmlGcMemSetup() and xmlGcMemGet()
    to allow registering the full set of functions needed by
    a garbage collecting allocator like libgc, ref #109944
  Daniel
  

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• include/libxml/xmlmemory.h

• /*
   * xmlmemory.h: interface for the memory allocation debug.
   *
   * daniel@veillard.com
   */
  
  
  #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 (*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 *(*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);
  
  /*
   * 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
   */
  int     xmlMemSetup	(xmlFreeFunc freeFunc,
  			 xmlMallocFunc mallocFunc,
  			 xmlReallocFunc reallocFunc,
  			 xmlStrdupFunc strdupFunc);
  int     xmlMemGet	(xmlFreeFunc *freeFunc,
  			 xmlMallocFunc *mallocFunc,
  			 xmlReallocFunc *reallocFunc,
  			 xmlStrdupFunc *strdupFunc);
  int     xmlGcMemSetup	(xmlFreeFunc freeFunc,
  			 xmlMallocFunc mallocFunc,
  			 xmlMallocFunc mallocAtomicFunc,
  			 xmlReallocFunc reallocFunc,
  			 xmlStrdupFunc strdupFunc);
  int     xmlGcMemGet	(xmlFreeFunc *freeFunc,
  			 xmlMallocFunc *mallocFunc,
  			 xmlMallocFunc *mallocAtomicFunc,
  			 xmlReallocFunc *reallocFunc,
  			 xmlStrdupFunc *strdupFunc);
  
  /*
   * Initialization of the memory layer.
   */
  int	xmlInitMemory	(void);
  
  /*
   * Those are specific to the XML debug memory wrapper.
   */
  int	xmlMemUsed	(void);
  void	xmlMemDisplay	(FILE *fp);
  void	xmlMemShow	(FILE *fp, int nr);
  void	xmlMemoryDump	(void);
  void *	xmlMemMalloc	(size_t size);
  void *	xmlMemRealloc	(void *ptr,size_t size);
  void	xmlMemFree	(void *ptr);
  char *	xmlMemoryStrdup	(const char *str);
  
  #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__)
  
  void *	xmlMallocLoc(size_t size, const char *file, int line);
  void *	xmlReallocLoc(void *ptr,size_t size, const char *file, int line);
  char *	xmlMemStrdupLoc(const char *str, const char *file, int 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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