1 /*

     2  * malloc.h

     3  * This file has no copyright assigned and is placed in the Public Domain.

     4  * This file is a part of the mingw-runtime package.

     5  * No warranty is given; refer to the file DISCLAIMER within the package.

     6  *

     7  * Support for programs which want to use malloc.h to get memory management

     8  * functions. Unless you absolutely need some of these functions and they are

     9  * not in the ANSI headers you should use the ANSI standard header files

    10  * instead.

    11  *

    12  */

    13 

    14 #ifndef _MALLOC_H_

    15 #define _MALLOC_H_

    16 

    17 /* All the headers include this file. */

    18 #include <_mingw.h>

    19 

    20 #include <stdlib.h>

    21 

    22 #ifndef RC_INVOKED

    23 

    24 /*

    25  * The structure used to walk through the heap with _heapwalk.

    26  */

    27 typedef	struct _heapinfo

    28 {

    29 	int*	_pentry;

    30 	size_t	_size;

    31 	int	_useflag;

    32 } _HEAPINFO;

    33 

    34 /* Values for _heapinfo.useflag */

    35 #define _FREEENTRY 0

    36 #define _USEDENTRY 1

    37 

    38 /* Return codes for _heapwalk()  */

    39 #define _HEAPEMPTY	(-1)

    40 #define _HEAPOK		(-2)

    41 #define _HEAPBADBEGIN	(-3)

    42 #define _HEAPBADNODE	(-4)

    43 #define _HEAPEND	(-5)

    44 #define _HEAPBADPTR	(-6)

    45 

    46 /* maximum size of a user request for memory */

    47 #define _HEAP_MAXREQ  0xFFFFFFE0

    48 

    49 #ifdef	__cplusplus

    50 extern "C" {

    51 #endif

    52 /*

    53    The _heap* memory allocation functions are supported on NT

    54    but not W9x. On latter, they always set errno to ENOSYS.

    55 */

    56 _CRTIMP int __cdecl __MINGW_NOTHROW _heapwalk (_HEAPINFO*);

    57 #ifdef __GNUC__

    58 #define _alloca(x) __builtin_alloca((x))

    59 #endif

    60 

    61 #ifndef	_NO_OLDNAMES

    62 _CRTIMP int __cdecl __MINGW_NOTHROW heapwalk (_HEAPINFO*);

    63 #ifdef __GNUC__

    64 #define alloca(x) __builtin_alloca((x))

    65 #endif

    66 #endif	/* Not _NO_OLDNAMES */

    67 

    68 _CRTIMP int __cdecl __MINGW_NOTHROW _heapchk (void);	/* Verify heap integrety. */

    69 _CRTIMP int __cdecl __MINGW_NOTHROW _heapmin (void);	/* Return unused heap to the OS. */

    70 _CRTIMP int __cdecl __MINGW_NOTHROW _heapset (unsigned int);

    71 

    72 _CRTIMP size_t __cdecl __MINGW_NOTHROW _msize (void*);

    73 _CRTIMP size_t __cdecl __MINGW_NOTHROW _get_sbh_threshold (void); 

    74 _CRTIMP int __cdecl __MINGW_NOTHROW _set_sbh_threshold (size_t);

    75 _CRTIMP void* __cdecl __MINGW_NOTHROW _expand (void*, size_t); 

    76 

    77 /* These require msvcr70.dll or higher. */ 

    78 #if __MSVCRT_VERSION__ >= 0x0700

    79 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_offset_malloc(size_t, size_t, size_t);

    80 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_offset_realloc(void*, size_t, size_t, size_t);

    81 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_offset_recalloc(void*, size_t, size_t, size_t, size_t);

    82 

    83 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_malloc (size_t, size_t);

    84 _CRTIMP void * __cdecl __MINGW_NOTHROW _aligned_realloc (void*, size_t, size_t);

    85 _CRTIMP void* __cdecl __MINGW_NOTHROW _aligned_recalloc(void*, size_t, size_t, size_t);

    86 _CRTIMP void __cdecl __MINGW_NOTHROW _aligned_free (void*);

    87 #endif /* __MSVCRT_VERSION__ >= 0x0700 */

    88 

    89 /* These require libmingwex.a. */ 

    90 void * __cdecl __MINGW_NOTHROW __mingw_aligned_offset_malloc (size_t, size_t, size_t);

    91 void * __cdecl __MINGW_NOTHROW __mingw_aligned_offset_realloc (void*, size_t, size_t, size_t);

    92 

    93 void * __cdecl __MINGW_NOTHROW __mingw_aligned_malloc (size_t, size_t);

    94 void * __cdecl __MINGW_NOTHROW __mingw_aligned_realloc (void*, size_t, size_t);

    95 void __cdecl __MINGW_NOTHROW __mingw_aligned_free (void*);

    96 

    97 #ifdef __cplusplus

    98 }

    99 #endif

   100 

   101 #endif	/* RC_INVOKED */

   102 

   103 #endif /* Not _MALLOC_H_ */