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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 *(LIBXML_ATTR_ALLOC_SIZE(1) 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 xmlFreeFunc xmlFree; LIBXML_DLL_IMPORT xmlMallocFunc xmlMalloc; LIBXML_DLL_IMPORT xmlMallocFunc xmlMallocAtomic; LIBXML_DLL_IMPORT xmlReallocFunc xmlRealloc; LIBXML_DLL_IMPORT 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 int XMLCALL xmlMemBlocks (void); XMLPUBFUN void XMLCALL xmlMemDisplay (FILE *fp); XMLPUBFUN void XMLCALL xmlMemDisplayLast(FILE *fp, long nbBytes); XMLPUBFUN void XMLCALL xmlMemShow (FILE *fp, int nr); XMLPUBFUN void XMLCALL xmlMemoryDump (void); XMLPUBFUN void * XMLCALL xmlMemMalloc (size_t size) LIBXML_ATTR_ALLOC_SIZE(1); 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) LIBXML_ATTR_ALLOC_SIZE(1); 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) LIBXML_ATTR_ALLOC_SIZE(1); 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__ */