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MALLOC.H
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C/C++ Source or Header
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1996-07-24
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7KB
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195 lines
/*
* malloc.h Memory allocation functions
*
* Copyright by WATCOM International Corp. 1988-1996. All rights reserved.
*/
#ifndef _MALLOC_H_INCLUDED
#define _MALLOC_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _COMDEF_H_INCLUDED
#include <_comdef.h>
#endif
#if defined(_M_IX86)
#pragma pack(__push,1);
#else
#pragma pack(__push,8);
#endif
#ifndef _SIZE_T_DEFINED
#define _SIZE_T_DEFINED
#define _SIZE_T_DEFINED_
typedef unsigned size_t;
#endif
#ifndef NULL
#if defined(__SMALL__) || defined(__MEDIUM__) || defined(__386__) || defined(__AXP__) || defined(__PPC__)
#define NULL 0
#else
#define NULL 0L
#endif
#endif
#ifndef alloca
_WCRTLINK extern void *alloca(size_t __size);
_WCRTLINK extern void *_alloca(size_t __size);
_WCRTLINK extern unsigned stackavail( void );
#if defined(__AXP__) || defined(__PPC__)
extern void *__builtin_alloca(size_t __size);
#pragma intrinsic(__builtin_alloca);
#define __alloca( s ) (__builtin_alloca(s))
#define alloca( s ) ((s<stackavail())?__alloca(s):NULL)
#define _alloca( s ) ((s<stackavail())?__alloca(s):NULL)
#else
extern void *__doalloca(size_t __size);
#pragma aux stackavail __modify __nomemory;
#define __ALLOCA_ALIGN( s ) (((s)+(sizeof(int)-1))&~(sizeof(int)-1))
#define __alloca( s ) __doalloca(__ALLOCA_ALIGN(s))
#if defined(__386__)
extern void __GRO(size_t __size);
#pragma aux __GRO "*" __parm __routine [];
#define alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?(__GRO(__ALLOCA_ALIGN(s)),__alloca(s)):NULL)
#define _alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?(__GRO(__ALLOCA_ALIGN(s)),__alloca(s)):NULL)
#else
#define alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?__alloca(s):NULL)
#define _alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?__alloca(s):NULL)
#endif
#if defined(__386__)
#pragma aux __doalloca = \
"sub esp,eax" \
__parm __nomemory [__eax] __value [__esp] __modify __exact __nomemory [__esp];
#elif defined(__SMALL__) || defined(__MEDIUM__) /* small data models */
#pragma aux __doalloca = \
"sub sp,ax" \
__parm __nomemory [__ax] __value [__sp] __modify __exact __nomemory [__sp];
#else /* large data models */
#pragma aux __doalloca = \
"sub sp,ax" \
"mov ax,sp" \
"mov dx,ss" \
__parm __nomemory [__ax] __value [__dx __ax] __modify __exact __nomemory [__dx __ax __sp];
#endif
#endif
#endif
#define _HEAPOK 0
#define _HEAPEMPTY 1 /* heap isn't initialized */
#define _HEAPBADBEGIN 2 /* heap header is corrupted */
#define _HEAPBADNODE 3 /* heap entry is corrupted */
#define _HEAPEND 4 /* end of heap entries (_heapwalk) */
#define _HEAPBADPTR 5 /* invalid heap entry pointer (_heapwalk) */
#define _USEDENTRY 0
#define _FREEENTRY 1
typedef struct _heapinfo {
void _WCFAR *_pentry; /* heap pointer */
size_t _size; /* heap entry size */
int _useflag; /* heap entry 'in-use' flag */
} _HEAPINFO;
_WCRTLINK extern int _heapenable( int __enabled );
_WCRTLINK extern int _heapchk( void );
_WCRTLINK extern int _nheapchk( void );
_WCRTLINK extern int _fheapchk( void );
_WCRTLINK extern int _heapset( unsigned int __fill );
_WCRTLINK extern int _nheapset( unsigned int __fill );
_WCRTLINK extern int _fheapset( unsigned int __fill );
_WCRTLINK extern int _heapwalk( struct _heapinfo *__entry );
_WCRTLINK extern int _nheapwalk( struct _heapinfo *__entry );
_WCRTLINK extern int _fheapwalk( struct _heapinfo *__entry );
_WCRTLINK extern void _heapgrow( void );
_WCRTLINK extern void _nheapgrow( void );
_WCRTLINK extern void _fheapgrow( void );
_WCRTLINK extern int _heapmin( void );
_WCRTLINK extern int _nheapmin( void );
_WCRTLINK extern int _fheapmin( void );
_WCRTLINK extern int _heapshrink( void );
_WCRTLINK extern int _nheapshrink( void );
_WCRTLINK extern int _fheapshrink( void );
_WCRTLINK extern int __nmemneed( size_t );
_WCRTLINK extern int __fmemneed( size_t );
#if !defined(_fcalloc) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCFAR *_fcalloc( size_t __n, size_t __size );
#endif
#if !defined(_ncalloc) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCNEAR *_ncalloc( size_t __n, size_t __size );
#endif
_WCRTLINK extern void * _expand( void *__ptr, size_t __size );
#if !defined(_fexpand) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCFAR *_fexpand( void _WCFAR *__ptr, size_t __size );
#endif
#if !defined(_nexpand) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCNEAR *_nexpand( void _WCNEAR *__ptr, size_t __size );
#endif
#if !defined(_ffree) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _ffree( void _WCFAR *__ptr );
#endif
#if !defined(_fmalloc) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCFAR * _fmalloc( size_t __size );
#endif
_WCRTLINK extern unsigned int _freect( size_t __size );
_WCRTLINK extern void _WCHUGE *halloc( long __n, size_t __size );
_WCRTLINK extern void hfree( void _WCHUGE * );
#if !defined(_nfree) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _nfree( void _WCNEAR *__ptr );
#endif
#if !defined(_nmalloc) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCNEAR *_nmalloc( size_t __size );
#endif
#if !defined(_nrealloc) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCNEAR *_nrealloc( void _WCNEAR *__ptr, size_t __size );
#endif
#if !defined(_frealloc) || !defined(_INC_WINDOWSX)
_WCRTLINK extern void _WCFAR *_frealloc( void _WCFAR *__ptr, size_t __size );
#endif
_WCRTLINK extern size_t _msize( void *__ptr );
#if !defined(_nmsize) || !defined(_INC_WINDOWSX)
_WCRTLINK extern size_t _nmsize( void _WCNEAR *__ptr );
#endif
#if !defined(_fmsize) || !defined(_INC_WINDOWSX)
_WCRTLINK extern size_t _fmsize( void _WCFAR *__ptr );
#endif
_WCRTLINK extern size_t _memavl( void );
_WCRTLINK extern size_t _memmax( void );
_WCRTLINK extern void * calloc( size_t __n, size_t __size );
_WCRTLINK extern void free( void *__ptr );
_WCRTLINK extern void * malloc( size_t __size );
_WCRTLINK extern void * realloc( void *__ptr, size_t __size );
#if defined(_M_IX86)
/* based heap function prototypes */
#define _NULLSEG ((__segment)0)
#define _NULLOFF ((void __based(void) *)~0)
_WCRTLINK extern int _bfreeseg( __segment __seg );
_WCRTLINK extern __segment _bheapseg( size_t size );
_WCRTLINK extern void __based(void) *_bcalloc( __segment __seg, size_t __num, size_t __size );
_WCRTLINK extern void __based(void) *_bexpand( __segment __seg, void __based(void) *__mem, size_t __size );
_WCRTLINK extern void _bfree( __segment __seg, void __based(void) *__mem );
_WCRTLINK extern int _bheapchk( __segment __seg );
_WCRTLINK extern int _bheapmin( __segment __seg );
_WCRTLINK extern int _bheapshrink( __segment __seg );
_WCRTLINK extern int _bheapset( __segment __seg, unsigned int __fill );
_WCRTLINK extern int _bheapwalk( __segment __seg, struct _heapinfo *__entry );
_WCRTLINK extern void __based(void) *_bmalloc( __segment __seg, size_t __size );
_WCRTLINK extern size_t _bmsize( __segment __seg, void __based(void) *__mem );
_WCRTLINK extern void __based(void) *_brealloc( __segment __seg, void __based(void) *__mem, size_t __size );
#endif
#pragma pack(__pop);
#ifdef __cplusplus
};
#endif
#endif