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/* Prototypes and definition for malloc implementation.

   Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#ifndef _MALLOC_H

#define _MALLOC_H 1

#include <features.h>

/*

  `ptmalloc', a malloc implementation for multiple threads without

  lock contention, by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.

  See the files `ptmalloc.c' or `COPYRIGHT' for copying conditions.

  VERSION 2.6.4-pt Wed Dec  4 00:35:54 MET 1996

  This work is mainly derived from malloc-2.6.4 by Doug Lea

  <dl@cs.oswego.edu>, which is available from:

                 ftp://g.oswego.edu/pub/misc/malloc.c

  This trimmed-down header file only provides function prototypes and

  the exported data structures.  For more detailed function

  descriptions and compile-time options, see the source file

  `ptmalloc.c'.

*/

#if defined(__STDC__) || defined (__cplusplus)

# include <stddef.h>

# define __malloc_ptr_t  void *

#else

# undef  size_t

# define size_t          unsigned int

# undef  ptrdiff_t

# define ptrdiff_t       int

# define __malloc_ptr_t  char *

#endif

#ifdef _LIBC

/* Used by GNU libc internals. */

# define __malloc_size_t size_t

# define __malloc_ptrdiff_t ptrdiff_t

#elif !defined __attribute_malloc__

# define __attribute_malloc__

#endif

#ifdef __GNUC__

/* GCC can always grok prototypes.  For C++ programs we add throw()

   to help it optimize the function calls.  But this works only with

   gcc 2.8.x and egcs.  */

#ifndef __THROW

# if defined __cplusplus && (__GNUC__ >= 3 || __GNUC_MINOR__ >= 8)

#  define __THROW       throw ()

# else

#  define __THROW

# endif

#endif

# define __MALLOC_P(args)       args __THROW

/* This macro will be used for functions which might take C++ callback

   functions.  */

# define __MALLOC_PMT(args)     args

#else   /* Not GCC.  */

# define __THROW

# if (defined __STDC__ && __STDC__) || defined __cplusplus

#  define __MALLOC_P(args)      args

#  define __MALLOC_PMT(args)    args

# else  /* Not ANSI C or C++.  */

#  define __MALLOC_P(args)      ()      /* No prototypes.  */

#  define __MALLOC_PMT(args)    ()

# endif /* ANSI C or C++.  */

#endif  /* GCC.  */

#ifndef NULL

# ifdef __cplusplus

#  define NULL  0

# else

#  define NULL  ((__malloc_ptr_t) 0)

# endif

#endif

#ifdef __cplusplus

extern "C" {

#endif

/* Allocate SIZE bytes of memory.  */

extern __malloc_ptr_t malloc __MALLOC_P ((size_t __size)) __attribute_malloc__;

/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0.  */

extern __malloc_ptr_t calloc __MALLOC_P ((size_t __nmemb, size_t __size))

       __attribute_malloc__;

/* Re-allocate the previously allocated block in __ptr, making the new

   block SIZE bytes long.  */

extern __malloc_ptr_t realloc __MALLOC_P ((__malloc_ptr_t __ptr,

                                           size_t __size))

       __attribute_malloc__;

/* Free a block allocated by `malloc', `realloc' or `calloc'.  */

extern void free __MALLOC_P ((__malloc_ptr_t __ptr));

/* Allocate SIZE bytes allocated to ALIGNMENT bytes.  */

extern __malloc_ptr_t memalign __MALLOC_P ((size_t __alignment, size_t __size));

/* Allocate SIZE bytes on a page boundary.  */

extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size)) __attribute_malloc__;

#ifdef __MALLOC_STANDARD__

/* SVID2/XPG mallinfo structure */

struct mallinfo {

  int arena;    /* total space allocated from system */

  int ordblks;  /* number of non-inuse chunks */

  int smblks;   /* unused -- always zero */

  int hblks;    /* number of mmapped regions */

  int hblkhd;   /* total space in mmapped regions */

  int usmblks;  /* unused -- always zero */

  int fsmblks;  /* unused -- always zero */

  int uordblks; /* total allocated space */

  int fordblks; /* total non-inuse space */

  int keepcost; /* top-most, releasable (via malloc_trim) space */

};

/* Returns a copy of the updated current mallinfo. */

extern struct mallinfo mallinfo __MALLOC_P ((void));

/* Release all but __pad bytes of freed top-most memory back to the

   system. Return 1 if successful, else 0. */

extern int malloc_trim(size_t pad);

#include <stdio.h>

/* Prints brief summary statistics to the specified file.

 * Writes to stderr if file is NULL. */

extern void malloc_stats(FILE *file);

/* SVID2/XPG mallopt options */

#ifndef M_MXFAST

# define M_MXFAST  1    /* UNUSED in this malloc */

#endif

#ifndef M_NLBLKS

# define M_NLBLKS  2    /* UNUSED in this malloc */

#endif

#ifndef M_GRAIN

# define M_GRAIN   3    /* UNUSED in this malloc */

#endif

#ifndef M_KEEP

# define M_KEEP    4    /* UNUSED in this malloc */

#endif

/* mallopt options that actually do something */

#define M_TRIM_THRESHOLD    -1

#define M_TOP_PAD           -2

#define M_MMAP_THRESHOLD    -3

#define M_MMAP_MAX          -4

#define M_CHECK_ACTION      -5

#define M_PERTURB           -6

/* General SVID/XPG interface to tunable parameters. */

extern int mallopt __MALLOC_P ((int __param, int __val));

#endif /* __MALLOC_STANDARD__ */

#ifdef __cplusplus

} /* end of extern "C" */

#endif

#endif /* malloc.h */