+++ /dev/null
-/* Declarations for `malloc' and friends.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
- Written May 1989 by Mike Haertel.
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-This 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
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with this library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.
-
- The author may be reached (Email) at the address mike@ai.mit.edu,
- or (US mail) as Mike Haertel c/o Free Software Foundation. */
-
-#ifndef _MALLOC_H
-
-#define _MALLOC_H 1
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-#if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
-#undef __P
-#define __P(args) args
-#undef __ptr_t
-#define __ptr_t void *
-#else /* Not C++ or ANSI C. */
-#undef __P
-#define __P(args) ()
-#undef const
-#define const
-#undef __ptr_t
-#define __ptr_t char *
-#endif /* C++ or ANSI C. */
-
-#ifndef NULL
-#define NULL 0
-#endif
-
-#ifdef __STDC__
-#include <stddef.h>
-#else
-#undef size_t
-#define size_t unsigned int
-#undef ptrdiff_t
-#define ptrdiff_t int
-#endif
-
-
-/* Allocate SIZE bytes of memory. */
-extern __ptr_t malloc __P ((size_t __size));
-/* Re-allocate the previously allocated block
- in __ptr_t, making the new block SIZE bytes long. */
-extern __ptr_t realloc __P ((__ptr_t __ptr, size_t __size));
-/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
-extern __ptr_t calloc __P ((size_t __nmemb, size_t __size));
-/* Free a block allocated by `malloc', `realloc' or `calloc'. */
-extern void free __P ((__ptr_t __ptr));
-
-/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
-extern __ptr_t memalign __P ((size_t __alignment, size_t __size));
-
-/* Allocate SIZE bytes on a page boundary. */
-extern __ptr_t valloc __P ((size_t __size));
-
-
-#ifdef _MALLOC_INTERNAL
-
-#include <stdio.h> /* Harmless, gets __GNU_LIBRARY__ defined. */
-
-#if defined(__GNU_LIBRARY__) || defined(STDC_HEADERS) || defined(USG)
-#include <string.h>
-#else
-#ifndef memset
-#define memset(s, zero, n) bzero ((s), (n))
-#endif
-#ifndef memcpy
-#define memcpy(d, s, n) bcopy ((s), (d), (n))
-#endif
-#endif
-
-
-#if defined(__GNU_LIBRARY__) || defined(__STDC__)
-#include <limits.h>
-#else
-#define CHAR_BIT 8
-#endif
-
-/* The allocator divides the heap into blocks of fixed size; large
- requests receive one or more whole blocks, and small requests
- receive a fragment of a block. Fragment sizes are powers of two,
- and all fragments of a block are the same size. When all the
- fragments in a block have been freed, the block itself is freed. */
-#define INT_BIT (CHAR_BIT * sizeof(int))
-#define BLOCKLOG (INT_BIT > 16 ? 12 : 9)
-#define BLOCKSIZE (1 << BLOCKLOG)
-#define BLOCKIFY(SIZE) (((SIZE) + BLOCKSIZE - 1) / BLOCKSIZE)
-
-/* Determine the amount of memory spanned by the initial heap table
- (not an absolute limit). */
-#define HEAP (INT_BIT > 16 ? 4194304 : 65536)
-
-/* Number of contiguous free blocks allowed to build up at the end of
- memory before they will be returned to the system. */
-#define FINAL_FREE_BLOCKS 8
-
-/* Data structure giving per-block information. */
-typedef union
- {
- /* Heap information for a busy block. */
- struct
- {
- /* Zero for a large block, or positive giving the
- logarithm to the base two of the fragment size. */
- int type;
- union
- {
- struct
- {
- size_t nfree; /* Free fragments in a fragmented block. */
- size_t first; /* First free fragment of the block. */
- } frag;
- /* Size (in blocks) of a large cluster. */
- size_t size;
- } info;
- } busy;
- /* Heap information for a free block
- (that may be the first of a free cluster). */
- struct
- {
- size_t size; /* Size (in blocks) of a free cluster. */
- size_t next; /* Index of next free cluster. */
- size_t prev; /* Index of previous free cluster. */
- } free;
- } malloc_info;
-
-/* Pointer to first block of the heap. */
-extern char *_heapbase;
-
-/* Table indexed by block number giving per-block information. */
-extern malloc_info *_heapinfo;
-
-/* Address to block number and vice versa. */
-#define BLOCK(A) (((char *) (A) - _heapbase) / BLOCKSIZE + 1)
-#define ADDRESS(B) ((__ptr_t) (((B) - 1) * BLOCKSIZE + _heapbase))
-
-/* Current search index for the heap table. */
-extern size_t _heapindex;
-
-/* Limit of valid info table indices. */
-extern size_t _heaplimit;
-
-/* Doubly linked lists of free fragments. */
-struct list
- {
- struct list *next;
- struct list *prev;
- };
-
-/* Free list headers for each fragment size. */
-extern struct list _fraghead[];
-
-/* List of blocks allocated with `memalign' (or `valloc'). */
-struct alignlist
- {
- struct alignlist *next;
- __ptr_t aligned; /* The address that memaligned returned. */
- __ptr_t exact; /* The address that malloc returned. */
- };
-extern struct alignlist *_aligned_blocks;
-
-/* Instrumentation. */
-extern size_t _chunks_used;
-extern size_t _bytes_used;
-extern size_t _chunks_free;
-extern size_t _bytes_free;
-
-/* Internal version of `free' used in `morecore' (malloc.c). */
-extern void _free_internal __P ((__ptr_t __ptr));
-
-#endif /* _MALLOC_INTERNAL. */
-
-/* Underlying allocation function; successive calls should
- return contiguous pieces of memory. */
-extern __ptr_t (*__morecore) __P ((ptrdiff_t __size));
-
-/* Default value of `__morecore'. */
-extern __ptr_t __default_morecore __P ((ptrdiff_t __size));
-
-/* Nonzero if `malloc' has been called and done its initialization. */
-extern int __malloc_initialized;
-
-/* Hooks for debugging versions. */
-extern void (*__free_hook) __P ((__ptr_t __ptr));
-extern __ptr_t (*__malloc_hook) __P ((size_t __size));
-extern __ptr_t (*__realloc_hook) __P ((__ptr_t __ptr, size_t __size));
-
-/* Activate a standard collection of debugging hooks. */
-extern void mcheck __P ((void (*__func) __P ((void))));
-
-/* Activate a standard collection of tracing hooks. */
-extern void mtrace __P ((void));
-
-/* Statistics available to the user. */
-struct mstats
- {
- size_t bytes_total; /* Total size of the heap. */
- size_t chunks_used; /* Chunks allocated by the user. */
- size_t bytes_used; /* Byte total of user-allocated chunks. */
- size_t chunks_free; /* Chunks in the free list. */
- size_t bytes_free; /* Byte total of chunks in the free list. */
- };
-
-/* Pick up the current statistics. */
-extern struct mstats mstats __P ((void));
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* malloc.h */