contrib/tre/lib/xmalloc.h

   1 /*
   2   xmalloc.h - Simple malloc debugging library API
   3
   4   This software is released under a BSD-style license.
   5   See the file LICENSE for details and copyright.
   6
   7 */
   8
   9 #ifndef _XMALLOC_H
  10 #define _XMALLOC_H 1
  11
  12 void *xmalloc_impl(size_t size, const char *file, int line, const char *func);
  13 void *xcalloc_impl(size_t nmemb, size_t size, const char *file, int line,
  14                    const char *func);
  15 void xfree_impl(void *ptr, const char *file, int line, const char *func);
  16 void *xrealloc_impl(void *ptr, size_t new_size, const char *file, int line,
  17                     const char *func);
  18 int xmalloc_dump_leaks(void);
  19 void xmalloc_configure(int fail_after);
  20
  21
  22 #ifndef XMALLOC_INTERNAL
  23 #ifdef MALLOC_DEBUGGING
  24
  25 /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
  26    which contains the name of the function currently being defined.
  27 #  define __XMALLOC_FUNCTION     __PRETTY_FUNCTION__
  28    This is broken in G++ before version 2.6.
  29    C9x has a similar variable called __func__, but prefer the GCC one since
  30    it demangles C++ function names.  */
  31 # ifdef __GNUC__
  32 #  if __GNUC__ > 2 || (__GNUC__ == 2 \
  33                        && __GNUC_MINOR__ >= (defined __cplusplus ? 6 : 4))
  34 #   define __XMALLOC_FUNCTION    __PRETTY_FUNCTION__
  35 #  else
  36 #   define __XMALLOC_FUNCTION    ((const char *) 0)
  37 #  endif
  38 # else
  39 #  if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
  40 #   define __XMALLOC_FUNCTION    __func__
  41 #  else
  42 #   define __XMALLOC_FUNCTION    ((const char *) 0)
  43 #  endif
  44 # endif
  45
  46 #define xmalloc(size) xmalloc_impl(size, __FILE__, __LINE__, \
  47                                    __XMALLOC_FUNCTION)
  48 #define xcalloc(nmemb, size) xcalloc_impl(nmemb, size, __FILE__, __LINE__, \
  49                                           __XMALLOC_FUNCTION)
  50 #define xfree(ptr) xfree_impl(ptr, __FILE__, __LINE__, __XMALLOC_FUNCTION)
  51 #define xrealloc(ptr, new_size) xrealloc_impl(ptr, new_size, __FILE__, \
  52                                               __LINE__, __XMALLOC_FUNCTION)
  53 #undef malloc
  54 #undef calloc
  55 #undef free
  56 #undef realloc
  57
  58 #define malloc  USE_XMALLOC_INSTEAD_OF_MALLOC
  59 #define calloc  USE_XCALLOC_INSTEAD_OF_CALLOC
  60 #define free    USE_XFREE_INSTEAD_OF_FREE
  61 #define realloc USE_XREALLOC_INSTEAD_OF_REALLOC
  62
  63 #else /* !MALLOC_DEBUGGING */
  64
  65 #include <stdlib.h>
  66
  67 #define xmalloc(size) malloc(size)
  68 #define xcalloc(nmemb, size) calloc(nmemb, size)
  69 #define xfree(ptr) free(ptr)
  70 #define xrealloc(ptr, new_size) realloc(ptr, new_size)
  71
  72 #endif /* !MALLOC_DEBUGGING */
  73 #endif /* !XMALLOC_INTERNAL */
  74
  75 #endif /* _XMALLOC_H */
  76
  77 /* EOF */