newlib/libc/include/malloc.h

   1 /* malloc.h -- header file for memory routines.  */
   2
   3 #ifndef _INCLUDE_MALLOC_H_
   4 #define _INCLUDE_MALLOC_H_
   5
   6 #include <_ansi.h>
   7 #include <sys/reent.h>
   8
   9 #define __need_size_t
  10 #include <stddef.h>
  11
  12 /* include any machine-specific extensions */
  13 #include <machine/malloc.h>
  14
  15 #ifdef __cplusplus
  16 extern "C" {
  17 #endif
  18
  19 /* This version of struct mallinfo must match the one in
  20    libc/stdlib/mallocr.c.  */
  21
  22 struct mallinfo {
  23   size_t arena;    /* total space allocated from system */
  24   size_t ordblks;  /* number of non-inuse chunks */
  25   size_t smblks;   /* unused -- always zero */
  26   size_t hblks;    /* number of mmapped regions */
  27   size_t hblkhd;   /* total space in mmapped regions */
  28   size_t usmblks;  /* unused -- always zero */
  29   size_t fsmblks;  /* unused -- always zero */
  30   size_t uordblks; /* total allocated space */
  31   size_t fordblks; /* total non-inuse space */
  32   size_t keepcost; /* top-most, releasable (via malloc_trim) space */
  33 };
  34
  35 /* The routines.  */
  36
  37 extern void *malloc (size_t);
  38 #ifdef __CYGWIN__
  39 #undef _malloc_r
  40 #define _malloc_r(r, s) malloc (s)
  41 #else
  42 extern void *_malloc_r (struct _reent *, size_t);
  43 #endif
  44
  45 extern void free (void *);
  46 #ifdef __CYGWIN__
  47 #undef _free_r
  48 #define _free_r(r, p) free (p)
  49 #else
  50 extern void _free_r (struct _reent *, void *);
  51 #endif
  52
  53 extern void *realloc (void *, size_t);
  54 #ifdef __CYGWIN__
  55 #undef _realloc_r
  56 #define _realloc_r(r, p, s) realloc (p, s)
  57 #else
  58 extern void *_realloc_r (struct _reent *, void *, size_t);
  59 #endif
  60
  61 extern void *calloc (size_t, size_t);
  62 #ifdef __CYGWIN__
  63 #undef _calloc_r
  64 #define _calloc_r(r, s1, s2) calloc (s1, s2);
  65 #else
  66 extern void *_calloc_r (struct _reent *, size_t, size_t);
  67 #endif
  68
  69 extern void *memalign (size_t, size_t);
  70 #ifdef __CYGWIN__
  71 #undef _memalign_r
  72 #define _memalign_r(r, s1, s2) memalign (s1, s2);
  73 #else
  74 extern void *_memalign_r (struct _reent *, size_t, size_t);
  75 #endif
  76
  77 extern struct mallinfo mallinfo (void);
  78 #ifdef __CYGWIN__
  79 #undef _mallinfo_r
  80 #define _mallinfo_r(r) mallinfo ()
  81 #else
  82 extern struct mallinfo _mallinfo_r (struct _reent *);
  83 #endif
  84
  85 extern void malloc_stats (void);
  86 #ifdef __CYGWIN__
  87 #undef _malloc_stats_r
  88 #define _malloc_stats_r(r) malloc_stats ()
  89 #else
  90 extern void _malloc_stats_r (struct _reent *);
  91 #endif
  92
  93 extern int mallopt (int, int);
  94 #ifdef __CYGWIN__
  95 #undef _mallopt_r
  96 #define _mallopt_r(i1, i2) mallopt (i1, i2)
  97 #else
  98 extern int _mallopt_r (struct _reent *, int, int);
  99 #endif
 100
 101 extern size_t malloc_usable_size (void *);
 102 #ifdef __CYGWIN__
 103 #undef _malloc_usable_size_r
 104 #define _malloc_usable_size_r(r, p) malloc_usable_size (p)
 105 #else
 106 extern size_t _malloc_usable_size_r (struct _reent *, void *);
 107 #endif
 108
 109 /* These aren't too useful on an embedded system, but we define them
 110    anyhow.  */
 111
 112 extern void *valloc (size_t);
 113 #ifdef __CYGWIN__
 114 #undef _valloc_r
 115 #define _valloc_r(r, s) valloc (s)
 116 #else
 117 extern void *_valloc_r (struct _reent *, size_t);
 118 #endif
 119
 120 extern void *pvalloc (size_t);
 121 #ifdef __CYGWIN__
 122 #undef _pvalloc_r
 123 #define _pvalloc_r(r, s) pvalloc (s)
 124 #else
 125 extern void *_pvalloc_r (struct _reent *, size_t);
 126 #endif
 127
 128 extern int malloc_trim (size_t);
 129 #ifdef __CYGWIN__
 130 #undef _malloc_trim_r
 131 #define _malloc_trim_r(r, s) malloc_trim (s)
 132 #else
 133 extern int _malloc_trim_r (struct _reent *, size_t);
 134 #endif
 135
 136 extern void __malloc_lock(struct _reent *);
 137
 138 extern void __malloc_unlock(struct _reent *);
 139
 140 /* A compatibility routine for an earlier version of the allocator.  */
 141
 142 extern void mstats (char *);
 143 #ifdef __CYGWIN__
 144 #undef _mstats_r
 145 #define _mstats_r(r, p) mstats (p)
 146 #else
 147 extern void _mstats_r (struct _reent *, char *);
 148 #endif
 149
 150 /* SVID2/XPG mallopt options */
 151
 152 #define M_MXFAST  1    /* UNUSED in this malloc */
 153 #define M_NLBLKS  2    /* UNUSED in this malloc */
 154 #define M_GRAIN   3    /* UNUSED in this malloc */
 155 #define M_KEEP    4    /* UNUSED in this malloc */
 156
 157 /* mallopt options that actually do something */
 158
 159 #define M_TRIM_THRESHOLD    -1
 160 #define M_TOP_PAD           -2
 161 #define M_MMAP_THRESHOLD    -3
 162 #define M_MMAP_MAX          -4
 163
 164 #ifndef __CYGWIN__
 165 /* Some systems provide this, so do too for compatibility.  */
 166 extern void cfree (void *);
 167 #endif /* __CYGWIN__ */
 168
 169 #ifdef __cplusplus
 170 }
 171 #endif
 172
 173 #endif /* _INCLUDE_MALLOC_H_ */