release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/sysroot/usr/include/malloc.h

   1 /* Prototypes and definition for malloc implementation.
   2    Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _MALLOC_H
  21 #define _MALLOC_H 1
  22
  23 #include <features.h>
  24
  25 /*
  26   `ptmalloc', a malloc implementation for multiple threads without
  27   lock contention, by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.
  28   See the files `ptmalloc.c' or `COPYRIGHT' for copying conditions.
  29
  30   VERSION 2.6.4-pt Wed Dec  4 00:35:54 MET 1996
  31
  32   This work is mainly derived from malloc-2.6.4 by Doug Lea
  33   <dl@cs.oswego.edu>, which is available from:
  34
  35                  ftp://g.oswego.edu/pub/misc/malloc.c
  36
  37   This trimmed-down header file only provides function prototypes and
  38   the exported data structures.  For more detailed function
  39   descriptions and compile-time options, see the source file
  40   `ptmalloc.c'.
  41 */
  42
  43 #if defined(__STDC__) || defined (__cplusplus)
  44 # include <stddef.h>
  45 # define __malloc_ptr_t  void *
  46 #else
  47 # undef  size_t
  48 # define size_t          unsigned int
  49 # undef  ptrdiff_t
  50 # define ptrdiff_t       int
  51 # define __malloc_ptr_t  char *
  52 #endif
  53
  54 #if   !defined __attribute_malloc__
  55 # define __attribute_malloc__
  56 #endif
  57
  58 #ifdef __GNUC__
  59
  60 /* GCC can always grok prototypes.  For C++ programs we add throw()
  61    to help it optimize the function calls.  But this works only with
  62    gcc 2.8.x and egcs.  */
  63 #ifndef __THROW
  64 # if defined __cplusplus && (__GNUC__ >= 3 || __GNUC_MINOR__ >= 8)
  65 #  define __THROW       throw ()
  66 # else
  67 #  define __THROW
  68 # endif
  69 #endif
  70 # define __MALLOC_P(args)       args __THROW
  71 /* This macro will be used for functions which might take C++ callback
  72    functions.  */
  73 # define __MALLOC_PMT(args)     args
  74
  75 #else   /* Not GCC.  */
  76
  77 # define __THROW
  78
  79 # if (defined __STDC__ && __STDC__) || defined __cplusplus
  80
  81 #  define __MALLOC_P(args)      args
  82 #  define __MALLOC_PMT(args)    args
  83
  84 # else  /* Not ANSI C or C++.  */
  85
  86 #  define __MALLOC_P(args)      ()      /* No prototypes.  */
  87 #  define __MALLOC_PMT(args)    ()
  88
  89 # endif /* ANSI C or C++.  */
  90
  91 #endif  /* GCC.  */
  92
  93 #ifndef NULL
  94 # ifdef __cplusplus
  95 #  define NULL  0
  96 # else
  97 #  define NULL  ((__malloc_ptr_t) 0)
  98 # endif
  99 #endif
 100
 101 #ifdef __cplusplus
 102 extern "C" {
 103 #endif
 104
 105 /* Allocate SIZE bytes of memory.  */
 106 extern __malloc_ptr_t malloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
 107
 108 /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0.  */
 109 extern __malloc_ptr_t calloc __MALLOC_P ((size_t __nmemb, size_t __size))
 110        __attribute_malloc__;
 111
 112 /* Re-allocate the previously allocated block in __ptr, making the new
 113    block SIZE bytes long.  */
 114 extern __malloc_ptr_t realloc __MALLOC_P ((__malloc_ptr_t __ptr,
 115                                            size_t __size))
 116        __attribute_malloc__;
 117
 118 /* Free a block allocated by `malloc', `realloc' or `calloc'.  */
 119 extern void free __MALLOC_P ((__malloc_ptr_t __ptr));
 120
 121 /* Allocate SIZE bytes allocated to ALIGNMENT bytes.  */
 122 extern __malloc_ptr_t memalign __MALLOC_P ((size_t __alignment, size_t __size));
 123
 124 /* Allocate SIZE bytes on a page boundary.  */
 125 extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
 126
 127 #ifdef __MALLOC_STANDARD__
 128
 129 /* SVID2/XPG mallinfo structure */
 130 struct mallinfo {
 131   int arena;    /* total space allocated from system */
 132   int ordblks;  /* number of non-inuse chunks */
 133   int smblks;   /* unused -- always zero */
 134   int hblks;    /* number of mmapped regions */
 135   int hblkhd;   /* total space in mmapped regions */
 136   int usmblks;  /* unused -- always zero */
 137   int fsmblks;  /* unused -- always zero */
 138   int uordblks; /* total allocated space */
 139   int fordblks; /* total non-inuse space */
 140   int keepcost; /* top-most, releasable (via malloc_trim) space */
 141 };
 142
 143 /* Returns a copy of the updated current mallinfo. */
 144 extern struct mallinfo mallinfo __MALLOC_P ((void));
 145
 146 /* Release all but __pad bytes of freed top-most memory back to the
 147    system. Return 1 if successful, else 0. */
 148 extern int malloc_trim(size_t pad);
 149
 150 #include <stdio.h>
 151 /* Prints brief summary statistics to the specified file.
 152  * Writes to stderr if file is NULL. */
 153 extern void malloc_stats(FILE *file);
 154
 155 /* SVID2/XPG mallopt options */
 156 #ifndef M_MXFAST
 157 # define M_MXFAST  1    /* UNUSED in this malloc */
 158 #endif
 159 #ifndef M_NLBLKS
 160 # define M_NLBLKS  2    /* UNUSED in this malloc */
 161 #endif
 162 #ifndef M_GRAIN
 163 # define M_GRAIN   3    /* UNUSED in this malloc */
 164 #endif
 165 #ifndef M_KEEP
 166 # define M_KEEP    4    /* UNUSED in this malloc */
 167 #endif
 168
 169 /* mallopt options that actually do something */
 170 #define M_TRIM_THRESHOLD    -1
 171 #define M_TOP_PAD           -2
 172 #define M_MMAP_THRESHOLD    -3
 173 #define M_MMAP_MAX          -4
 174 #define M_CHECK_ACTION      -5
 175 #define M_PERTURB           -6
 176
 177 /* General SVID/XPG interface to tunable parameters. */
 178 extern int mallopt __MALLOC_P ((int __param, int __val));
 179
 180 #endif /* __MALLOC_STANDARD__ */
 181
 182 /* uClibc may use malloc internally in situations where user can not be
 183  * notified about out-of-memory condition. In this situation uClibc will
 184  * call __uc_malloc_failed if it is non-NULL, and retry allocation
 185  * if it returns. If __uc_malloc_failed is NULL, uclibc will _exit(1).
 186  * NB: do not use stdio in __uc_malloc_failed handler! */
 187 extern void *__uc_malloc(size_t size);
 188 extern void (*__uc_malloc_failed)(size_t size);
 189
 190 #ifdef __cplusplus
 191 } /* end of extern "C" */
 192 #endif
 193
 194 #endif /* malloc.h */