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 #ifdef __cplusplus
  13 extern "C" {
  14 #endif
  15
  16 /* This version of struct mallinfo must match the one in
  17    libc/stdlib/mallocr.c.  */
  18
  19 struct mallinfo {
  20   int arena;    /* total space allocated from system */
  21   int ordblks;  /* number of non-inuse chunks */
  22   int smblks;   /* unused -- always zero */
  23   int hblks;    /* number of mmapped regions */
  24   int hblkhd;   /* total space in mmapped regions */
  25   int usmblks;  /* unused -- always zero */
  26   int fsmblks;  /* unused -- always zero */
  27   int uordblks; /* total allocated space */
  28   int fordblks; /* total non-inuse space */
  29   int keepcost; /* top-most, releasable (via malloc_trim) space */
  30 };
  31
  32 /* The routines.  */
  33
  34 extern _PTR malloc _PARAMS ((size_t));
  35 extern _PTR _malloc_r _PARAMS ((struct _reent *, size_t));
  36
  37 extern _VOID free _PARAMS ((_PTR));
  38 extern _VOID _free_r _PARAMS ((struct _reent *, _PTR));
  39
  40 extern _PTR realloc _PARAMS ((_PTR, size_t));
  41 extern _PTR _realloc_r _PARAMS ((struct _reent *, _PTR, size_t));
  42
  43 extern _PTR calloc _PARAMS ((size_t, size_t));
  44 extern _PTR _calloc_r _PARAMS ((struct _reent *, size_t, size_t));
  45
  46 extern _PTR memalign _PARAMS ((size_t, size_t));
  47 extern _PTR _memalign_r _PARAMS ((struct _reent *, size_t, size_t));
  48
  49 extern struct mallinfo mallinfo _PARAMS ((void));
  50 extern struct mallinfo _mallinfo_r _PARAMS ((struct _reent *));
  51
  52 extern void malloc_stats _PARAMS ((void));
  53 extern void _malloc_stats_r _PARAMS ((struct _reent *));
  54
  55 extern int mallopt _PARAMS ((int, int));
  56 extern int _mallopt_r _PARAMS ((struct _reent *, int, int));
  57
  58 extern size_t malloc_usable_size _PARAMS ((_PTR));
  59 extern size_t _malloc_usable_size_r _PARAMS ((struct _reent *, _PTR));
  60
  61 /* These aren't too useful on an embedded system, but we define them
  62    anyhow.  */
  63
  64 extern _PTR valloc _PARAMS ((size_t));
  65 extern _PTR _valloc_r _PARAMS ((struct _reent *, size_t));
  66
  67 extern _PTR pvalloc _PARAMS ((size_t));
  68 extern _PTR _pvalloc_r _PARAMS ((struct _reent *, size_t));
  69
  70 extern int malloc_trim _PARAMS ((size_t));
  71 extern int _malloc_trim_r _PARAMS ((struct _reent *, size_t));
  72
  73 /* A compatibility routine for an earlier version of the allocator.  */
  74
  75 extern _VOID mstats _PARAMS ((char *));
  76 extern _VOID _mstats_r _PARAMS ((struct _reent *, char *));
  77
  78 /* SVID2/XPG mallopt options */
  79
  80 #define M_MXFAST  1    /* UNUSED in this malloc */
  81 #define M_NLBLKS  2    /* UNUSED in this malloc */
  82 #define M_GRAIN   3    /* UNUSED in this malloc */
  83 #define M_KEEP    4    /* UNUSED in this malloc */
  84
  85 /* mallopt options that actually do something */
  86
  87 #define M_TRIM_THRESHOLD    -1
  88 #define M_TOP_PAD           -2
  89 #define M_MMAP_THRESHOLD    -3
  90 #define M_MMAP_MAX          -4
  91
  92 #if !defined (__CYGWIN__) && !defined (__MSYS__)
  93 /* Some systems provide this, so do too for compatibility.  */
  94 extern void cfree _PARAMS ((_PTR));
  95 #endif /* not __CYGWIN__ and not __MSYS__ */
  96
  97 #ifdef __cplusplus
  98 }
  99 #endif
 100
 101 #endif /* _INCLUDE_MALLOC_H_ */