newlib/winsup/mingw/include/malloc.h

94 lines
2.0 KiB
C

/*
* malloc.h
*
* Support for programs which want to use malloc.h to get memory management
* functions. Unless you absolutely need some of these functions and they are
* not in the ANSI headers you should use the ANSI standard header files
* instead.
*
* This file is part of the Mingw32 package.
*
* Contributors:
* Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAIMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* $Revision$
* $Author$
* $Date$
*
*/
#ifndef __STRICT_ANSI__
#ifndef _MALLOC_H_
#define _MALLOC_H_
/* All the headers include this file. */
#include <_mingw.h>
#include <stdlib.h>
#ifndef RC_INVOKED
/*
* The structure used to walk through the heap with _heapwalk.
*/
typedef struct _heapinfo
{
int* _pentry;
size_t _size;
int _useflag;
} _HEAPINFO;
/* Values for _heapinfo.useflag */
#define _USEDENTRY 0
#define _FREEENTRY 1
#ifdef __cplusplus
extern "C" {
#endif
/*
The _heap* memory allocation functions are supported on NT
but not W9x. On latter, they always set errno to ENOSYS.
*/
int _heapwalk (_HEAPINFO*);
#ifdef __GNUC__
#define _alloca(x) __builtin_alloca((x))
#endif
#ifndef _NO_OLDNAMES
int heapwalk (_HEAPINFO*);
#ifdef __GNUC__
#define alloca(x) __builtin_alloca((x))
#endif
#endif /* Not _NO_OLDNAMES */
int _heapchk (void); /* Verify heap integrety. */
int _heapmin (void); /* Return unused heap to the OS. */
int _heapset (unsigned int);
size_t _msize (void*);
size_t _get_sbh_threshold (void);
int _set_sbh_threshold (size_t);
void * _expand (void*, size_t);
#ifdef __cplusplus
}
#endif
#endif /* RC_INVOKED */
#endif /* Not _MALLOC_H_ */
#endif /* Not __STRICT_ANSI__ */