win32/include/malloc.h

   1 /*
   2  * malloc.h
   3  *
   4  * Support for programs which want to use malloc.h to get memory management
   5  * functions. Unless you absolutely need some of these functions and they are
   6  * not in the ANSI headers you should use the ANSI standard header files
   7  * instead.
   8  *
   9  * This file is part of the Mingw32 package.
  10  *
  11  * Contributors:
  12  *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
  13  *
  14  *  THIS SOFTWARE IS NOT COPYRIGHTED
  15  *
  16  *  This source code is offered for use in the public domain. You may
  17  *  use, modify or distribute it freely.
  18  *
  19  *  This code is distributed in the hope that it will be useful but
  20  *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  21  *  DISCLAIMED. This includes but is not limited to warranties of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  23  *
  24  * $Revision: 1.2 $
  25  * $Author: bellard $
  26  * $Date: 2005/04/17 13:14:29 $
  27  *
  28  */
  29
  30 #ifndef __STRICT_ANSI__
  31
  32 #ifndef _MALLOC_H_
  33 #define _MALLOC_H_
  34
  35 /* All the headers include this file. */
  36 #include <_mingw.h>
  37
  38 #include <stdlib.h>
  39
  40 #ifndef RC_INVOKED
  41
  42 /*
  43  * The structure used to walk through the heap with _heapwalk.
  44  */
  45 typedef struct _heapinfo
  46 {
  47         int*    _pentry;
  48         size_t  _size;
  49         int     _useflag;
  50 } _HEAPINFO;
  51
  52 /* Values for _heapinfo.useflag */
  53 #define _USEDENTRY 0
  54 #define _FREEENTRY 1
  55
  56 #ifdef  __cplusplus
  57 extern "C" {
  58 #endif
  59 /*
  60    The _heap* memory allocation functions are supported on NT
  61    but not W9x. On latter, they always set errno to ENOSYS.
  62 */
  63 int     _heapwalk (_HEAPINFO*);
  64
  65 #ifndef _NO_OLDNAMES
  66 int     heapwalk (_HEAPINFO*);
  67 #endif  /* Not _NO_OLDNAMES */
  68
  69 int     _heapchk (void);        /* Verify heap integrety. */
  70 int     _heapmin (void);        /* Return unused heap to the OS. */
  71 int     _heapset (unsigned int);
  72
  73 size_t  _msize (void*);
  74 size_t  _get_sbh_threshold (void);
  75 int     _set_sbh_threshold (size_t);
  76 void *  _expand (void*, size_t);
  77
  78 #ifdef __cplusplus
  79 }
  80 #endif
  81
  82 #endif  /* RC_INVOKED */
  83
  84 #endif /* Not _MALLOC_H_ */
  85
  86 #endif /* Not __STRICT_ANSI__ */
  87