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- /* DO NOT EDIT THIS FILE -- it is automagically generated. -*- C -*- */
-
- #define _MALLOC_INTERNAL
-
- /* The malloc headers and source files from the C library follow here. */
-
- /* Declarations for `malloc' and friends.
- Copyright 1990, 1991, 1992, 1993 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 __const
- #define __const const
- #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
- #ifdef VMS /* The following are defined in stdio.h, but we need it NOW!
- But do NOT do it with defines here, for then, VAX C is going
- to barf when it gets to stdio.h and the typedefs in there! */
- typedef unsigned int size_t;
- typedef int ptrdiff_t;
- #else /* not VMS */
- #undef size_t
- #define size_t unsigned int
- #undef ptrdiff_t
- #define ptrdiff_t int
- #endif /* VMS */
- #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 VMS
- /* VMS hooks to deal with two heaps */
- /* Allocate SIZE bytes of memory. */
- extern __ptr_t __vms_malloc __P ((size_t __size));
- /* Re-allocate the previously allocated block
- in __ptr_t, making the new block SIZE bytes long. */
- extern __ptr_t __vms_realloc __P ((__ptr_t __ptr, size_t __size));
- /* Free a block allocated by `malloc', `realloc' or `calloc'. */
- extern void __vms_free __P ((__ptr_t __ptr));
- #endif
-
- #ifdef _MALLOC_INTERNAL
-
- #include <stdio.h> /* Harmless, gets __GNU_LIBRARY__ defined. */
-
- #if defined(HAVE_CONFIG_H) || defined(emacs)
- #include "config.h"
- #endif
-
- #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
- #ifndef memmove
- #define memmove(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))
- #ifdef VMS
- #define BLOCKLOG 9
- #else
- #define BLOCKLOG (INT_BIT > 16 ? 12 : 9)
- #endif
- #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. */
- /* It does NOT always return contiguous pieces of memory on VMS. */
- extern __ptr_t (*__morecore) __P ((ptrdiff_t __size));
-
- /* Underlying deallocation function. It accepts both a pointer and
- a size to back up. It is implementation dependent what is really
- used. */
- extern __ptr_t (*__lesscore) __P ((__ptr_t __ptr, ptrdiff_t __size));
-
- /* Default value of `__morecore'. */
- extern __ptr_t __default_morecore __P ((ptrdiff_t __size));
-
- /* Default value of `__lesscore'. */
- extern __ptr_t __default_lesscore __P ((__ptr_t __ptr, ptrdiff_t __size));
-
- #ifdef VMS
- /* Default value of `__morecore'. */
- extern __ptr_t __vms_morecore __P ((ptrdiff_t __size));
-
- /* Default value of `__lesscore'. */
- extern __ptr_t __vms_lesscore __P ((__ptr_t __ptr, ptrdiff_t __size));
- #endif
-
- /* If not NULL, this function is called after each time
- `__morecore' is called to increase the data size. */
- extern void (*__after_morecore_hook) __P ((void));
-
- /* If not NULL, this function is called after each time
- `__lesscore' is called to increase the data size. */
- extern void (*__after_lesscore_hook) __P ((void));
-
- /* 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 int 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));
-
- /* Call WARNFUN with a warning message when memory usage is high. */
- extern void memory_warnings __P ((__ptr_t __start,
- void (*__warnfun) __P ((__const char *))));
-
-
- /* Relocating allocator. */
-
- /* Allocate SIZE bytes, and store the address in *HANDLEPTR. */
- extern __ptr_t r_alloc __P ((__ptr_t *__handleptr, size_t __size));
-
- /* Free the storage allocated in HANDLEPTR. */
- extern void r_alloc_free __P ((__ptr_t *__handleptr));
-
- /* Adjust the block at HANDLEPTR to be SIZE bytes long. */
- extern __ptr_t r_re_alloc __P ((__ptr_t *__handleptr, size_t __size));
-
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* malloc.h */
- /* Memory allocator `malloc'.
- Copyright 1990, 1991, 1992, 1993 Free Software Foundation
- 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- #ifdef VMS
- /* How to really get more memory. */
- __ptr_t (*__morecore) __P ((ptrdiff_t __size)) = __vms_morecore;
- #else
- /* How to really get more memory. */
- __ptr_t (*__morecore) __P ((ptrdiff_t __size)) = __default_morecore;
- #endif
-
- /* Debugging hook for `malloc'. */
- #ifdef VMS
- __ptr_t (*__malloc_hook) __P ((size_t __size)) = __vms_malloc;
- #else
- __ptr_t (*__malloc_hook) __P ((size_t __size));
- #endif
-
- /* Pointer to the base of the first block. */
- char *_heapbase;
-
- /* Block information table. Allocated with align/__free (not malloc/free). */
- malloc_info *_heapinfo;
-
- /* Number of info entries. */
- static size_t heapsize;
-
- /* Search index in the info table. */
- size_t _heapindex;
-
- /* Limit of valid info table indices. */
- size_t _heaplimit;
-
- /* Free lists for each fragment size. */
- struct list _fraghead[BLOCKLOG];
-
- /* Instrumentation. */
- size_t _chunks_used;
- size_t _bytes_used;
- size_t _chunks_free;
- size_t _bytes_free;
-
- /* Are you experienced? */
- int __malloc_initialized;
-
- void (*__after_morecore_hook) __P ((void));
-
- /* Aligned allocation. */
- static __ptr_t align __P ((size_t));
- static __ptr_t
- align (size)
- size_t size;
- {
- __ptr_t result;
- unsigned long int adj;
-
- result = (*__morecore) (size);
- adj = (unsigned long int) ((unsigned long int) ((char *) result -
- (char *) NULL)) % BLOCKSIZE;
- if (adj != 0)
- {
- adj = BLOCKSIZE - adj;
- (void) (*__morecore) (adj);
- result = (char *) result + adj;
- }
-
- if (__after_morecore_hook)
- (*__after_morecore_hook) ();
-
- return result;
- }
-
- /* Set everything up and remember that we have. */
- static int initialize __P ((void));
- static int
- initialize ()
- {
- #ifdef RL_DEBUG
- extern VMS_present_buffer();
- printf("__malloc_initialized = %d\n", __malloc_initialized);
- VMS_present_buffer();
- #endif
- heapsize = HEAP / BLOCKSIZE;
- _heapinfo = (malloc_info *) align (heapsize * sizeof (malloc_info));
- if (_heapinfo == NULL)
- return 0;
- memset (_heapinfo, 0, heapsize * sizeof (malloc_info));
- _heapinfo[0].free.size = 0;
- _heapinfo[0].free.next = _heapinfo[0].free.prev = 0;
- _heapindex = 0;
- _heapbase = (char *) _heapinfo;
- #ifdef RL_DEBUG
- /* debug */
- printf("_heapbase = 0%o/0x%x/%d\n", _heapbase, _heapbase, _heapbase);
- /* end debug */
- #endif
- __malloc_initialized = 1;
- return 1;
- }
-
- /* Get neatly aligned memory, initializing or
- growing the heap info table as necessary. */
- static __ptr_t morecore __P ((size_t));
- static __ptr_t
- morecore (size)
- size_t size;
- {
- __ptr_t result;
- malloc_info *newinfo, *oldinfo;
- size_t newsize;
-
- result = align (size);
- if (result == NULL)
- return NULL;
-
- /* Check if we need to grow the info table. */
- if ((size_t) BLOCK ((char *) result + size) > heapsize)
- {
- newsize = heapsize;
- while ((size_t) BLOCK ((char *) result + size) > newsize)
- newsize *= 2;
- newinfo = (malloc_info *) align (newsize * sizeof (malloc_info));
- if (newinfo == NULL)
- {
- (*__lesscore) (result, size);
- return NULL;
- }
- memset (newinfo, 0, newsize * sizeof (malloc_info));
- memcpy (newinfo, _heapinfo, heapsize * sizeof (malloc_info));
- oldinfo = _heapinfo;
- newinfo[BLOCK (oldinfo)].busy.type = 0;
- newinfo[BLOCK (oldinfo)].busy.info.size
- = BLOCKIFY (heapsize * sizeof (malloc_info));
- _heapinfo = newinfo;
- _free_internal (oldinfo);
- heapsize = newsize;
- }
-
- _heaplimit = BLOCK ((char *) result + size);
- return result;
- }
-
- /* Allocate memory from the heap. */
- __ptr_t
- malloc (size)
- size_t size;
- {
- __ptr_t result;
- size_t block, blocks, lastblocks, start;
- register size_t i;
- struct list *next;
-
- if (size == 0)
- return NULL;
-
- if (__malloc_hook != NULL)
- return (*__malloc_hook) (size);
-
- if (!__malloc_initialized)
- if (!initialize ())
- return NULL;
-
- if (size < sizeof (struct list))
- size = sizeof (struct list);
-
- /* Determine the allocation policy based on the request size. */
- if (size <= BLOCKSIZE / 2)
- {
- /* Small allocation to receive a fragment of a block.
- Determine the logarithm to base two of the fragment size. */
- register size_t log = 1;
- --size;
- while ((size /= 2) != 0)
- ++log;
-
- /* Look in the fragment lists for a
- free fragment of the desired size. */
- next = _fraghead[log].next;
- if (next != NULL)
- {
- /* There are free fragments of this size.
- Pop a fragment out of the fragment list and return it.
- Update the block's nfree and first counters. */
- result = (__ptr_t) next;
- next->prev->next = next->next;
- if (next->next != NULL)
- next->next->prev = next->prev;
- block = BLOCK (result);
- if (--_heapinfo[block].busy.info.frag.nfree != 0)
- _heapinfo[block].busy.info.frag.first = (unsigned long int)
- ((unsigned long int) ((char *) next->next - (char *) NULL)
- % BLOCKSIZE) >> log;
-
- /* Update the statistics. */
- ++_chunks_used;
- _bytes_used += 1 << log;
- --_chunks_free;
- _bytes_free -= 1 << log;
- }
- else
- {
- /* No free fragments of the desired size, so get a new block
- and break it into fragments, returning the first. */
- result = malloc (BLOCKSIZE);
- if (result == NULL)
- return NULL;
-
- /* Link all fragments but the first into the free list. */
- for (i = 1; i < (size_t) (BLOCKSIZE >> log); ++i)
- {
- next = (struct list *) ((char *) result + (i << log));
- #ifdef RL_DEBUG
- printf("DEBUG: malloc (%d): next = %p\n", size, next);
- #endif
- next->next = _fraghead[log].next;
- next->prev = &_fraghead[log];
- next->prev->next = next;
- if (next->next != NULL)
- next->next->prev = next;
- }
-
- /* Initialize the nfree and first counters for this block. */
- block = BLOCK (result);
- _heapinfo[block].busy.type = log;
- _heapinfo[block].busy.info.frag.nfree = i - 1;
- _heapinfo[block].busy.info.frag.first = i - 1;
-
- _chunks_free += (BLOCKSIZE >> log) - 1;
- _bytes_free += BLOCKSIZE - (1 << log);
- _bytes_used -= BLOCKSIZE - (1 << log);
- }
- }
- else
- {
- /* Large allocation to receive one or more blocks.
- Search the free list in a circle starting at the last place visited.
- If we loop completely around without finding a large enough
- space we will have to get more memory from the system. */
- blocks = BLOCKIFY (size);
- start = block = _heapindex;
- while (_heapinfo[block].free.size < blocks)
- {
- block = _heapinfo[block].free.next;
- if (block == start)
- {
- /* Need to get more from the system. Check to see if
- the new core will be contiguous with the final free
- block; if so we don't need to get as much. */
- block = _heapinfo[0].free.prev;
- lastblocks = _heapinfo[block].free.size;
- if (_heaplimit != 0 && block + lastblocks == _heaplimit &&
- (*__morecore) (0) == ADDRESS (block + lastblocks) &&
- (morecore ((blocks - lastblocks) * BLOCKSIZE)) != NULL)
- {
- _heapinfo[block].free.size = blocks;
- _bytes_free += (blocks - lastblocks) * BLOCKSIZE;
- continue;
- }
- result = morecore (blocks * BLOCKSIZE);
- if (result == NULL)
- return NULL;
- block = BLOCK (result);
- _heapinfo[block].busy.type = 0;
- _heapinfo[block].busy.info.size = blocks;
- ++_chunks_used;
- _bytes_used += blocks * BLOCKSIZE;
- return result;
- }
- }
-
- /* At this point we have found a suitable free list entry.
- Figure out how to remove what we need from the list. */
- result = ADDRESS (block);
- if (_heapinfo[block].free.size > blocks)
- {
- /* The block we found has a bit left over,
- so relink the tail end back into the free list. */
- _heapinfo[block + blocks].free.size
- = _heapinfo[block].free.size - blocks;
- _heapinfo[block + blocks].free.next
- = _heapinfo[block].free.next;
- _heapinfo[block + blocks].free.prev
- = _heapinfo[block].free.prev;
- _heapinfo[_heapinfo[block].free.prev].free.next
- = _heapinfo[_heapinfo[block].free.next].free.prev
- = _heapindex = block + blocks;
- }
- else
- {
- /* The block exactly matches our requirements,
- so just remove it from the list. */
- _heapinfo[_heapinfo[block].free.next].free.prev
- = _heapinfo[block].free.prev;
- _heapinfo[_heapinfo[block].free.prev].free.next
- = _heapindex = _heapinfo[block].free.next;
- --_chunks_free;
- }
-
- _heapinfo[block].busy.type = 0;
- _heapinfo[block].busy.info.size = blocks;
- ++_chunks_used;
- _bytes_used += blocks * BLOCKSIZE;
- _bytes_free -= blocks * BLOCKSIZE;
- }
-
- return result;
- }
- /* Free a block of memory allocated by `malloc'.
- Copyright 1990, 1991, 1992 Free Software Foundation
- 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- #ifdef VMS
- /* How to really get more memory. */
- __ptr_t (*__lesscore) __P ((__ptr_t __ptr,ptrdiff_t __size)) = __vms_lesscore;
- #else
- /* How to really get more memory. */
- __ptr_t (*__lesscore) __P ((__ptr_t __ptr,ptrdiff_t __size)) = __default_lesscore;
- #endif
-
- /* Debugging hook for free. */
- #ifdef VMS
- void (*__free_hook) __P ((__ptr_t __ptr)) = __vms_free;
- #else
- void (*__free_hook) __P ((__ptr_t __ptr));
- #endif
-
- /* List of blocks allocated by memalign. */
- struct alignlist *_aligned_blocks = NULL;
-
- /* Return memory to the heap.
- Like `free' but don't call a __free_hook if there is one. */
- void
- _free_internal (ptr)
- __ptr_t ptr;
- {
- int type;
- size_t block, blocks;
- register size_t i;
- struct list *prev, *next;
-
- block = BLOCK (ptr);
-
- type = _heapinfo[block].busy.type;
- switch (type)
- {
- case 0:
- /* Get as many statistics as early as we can. */
- --_chunks_used;
- _bytes_used -= _heapinfo[block].busy.info.size * BLOCKSIZE;
- _bytes_free += _heapinfo[block].busy.info.size * BLOCKSIZE;
-
- /* Find the free cluster previous to this one in the free list.
- Start searching at the last block referenced; this may benefit
- programs with locality of allocation. */
- i = _heapindex;
- if (i > block)
- while (i > block)
- i = _heapinfo[i].free.prev;
- else
- {
- do
- i = _heapinfo[i].free.next;
- while (i > 0 && i < block);
- i = _heapinfo[i].free.prev;
- }
-
- /* Determine how to link this block into the free list. */
- if (block == i + _heapinfo[i].free.size)
- {
- /* Coalesce this block with its predecessor. */
- _heapinfo[i].free.size += _heapinfo[block].busy.info.size;
- block = i;
- }
- else
- {
- /* Really link this block back into the free list. */
- _heapinfo[block].free.size = _heapinfo[block].busy.info.size;
- _heapinfo[block].free.next = _heapinfo[i].free.next;
- _heapinfo[block].free.prev = i;
- _heapinfo[i].free.next = block;
- _heapinfo[_heapinfo[block].free.next].free.prev = block;
- ++_chunks_free;
- }
-
- /* Now that the block is linked in, see if we can coalesce it
- with its successor (by deleting its successor from the list
- and adding in its size). */
- if (block + _heapinfo[block].free.size == _heapinfo[block].free.next)
- {
- _heapinfo[block].free.size
- += _heapinfo[_heapinfo[block].free.next].free.size;
- _heapinfo[block].free.next
- = _heapinfo[_heapinfo[block].free.next].free.next;
- _heapinfo[_heapinfo[block].free.next].free.prev = block;
- --_chunks_free;
- }
-
- /* Now see if we can return stuff to the system. */
- blocks = _heapinfo[block].free.size;
- if (blocks >= FINAL_FREE_BLOCKS && block + blocks == _heaplimit
- && (*__morecore) (0) == ADDRESS (block + blocks))
- {
- register size_t bytes = blocks * BLOCKSIZE;
- _heaplimit -= blocks;
- (*__lesscore) (ADDRESS(block), bytes);
- _heapinfo[_heapinfo[block].free.prev].free.next
- = _heapinfo[block].free.next;
- _heapinfo[_heapinfo[block].free.next].free.prev
- = _heapinfo[block].free.prev;
- block = _heapinfo[block].free.prev;
- --_chunks_free;
- _bytes_free -= bytes;
- }
-
- /* Set the next search to begin at this block. */
- _heapindex = block;
- break;
-
- default:
- /* Do some of the statistics. */
- --_chunks_used;
- _bytes_used -= 1 << type;
- ++_chunks_free;
- _bytes_free += 1 << type;
-
- /* Get the address of the first free fragment in this block. */
- prev = (struct list *) ((char *) ADDRESS (block) +
- (_heapinfo[block].busy.info.frag.first << type));
- #ifdef RL_DEBUG
- printf("_free_internal(0%o/0x%x/%d) :\n", ptr, ptr, ptr);
- printf(" block = %d, type = %d, prev = 0%o/0x%x/%d\n",
- block, type, prev, prev, prev);
- printf(" _heapinfo[block=%d].busy.info.frag.nfree = %d\n",
- block,
- _heapinfo[block].busy.info.frag.nfree);
- #endif
-
- if (_heapinfo[block].busy.info.frag.nfree == (BLOCKSIZE >> type) - 1)
- {
- /* If all fragments of this block are free, remove them
- from the fragment list and free the whole block. */
- next = prev;
- for (i = 1; i < (size_t) (BLOCKSIZE >> type); ++i)
- next = next->next;
- prev->prev->next = next;
- if (next != NULL)
- next->prev = prev->prev;
- _heapinfo[block].busy.type = 0;
- _heapinfo[block].busy.info.size = 1;
-
- /* Keep the statistics accurate. */
- ++_chunks_used;
- _bytes_used += BLOCKSIZE;
- _chunks_free -= BLOCKSIZE >> type;
- _bytes_free -= BLOCKSIZE;
-
- free (ADDRESS (block));
- }
- else if (_heapinfo[block].busy.info.frag.nfree != 0)
- {
- /* If some fragments of this block are free, link this
- fragment into the fragment list after the first free
- fragment of this block. */
- #ifdef RL_DEBUG
- printf("There's a bug hiding here (%s:%d), so I will print some values\n", __FILE__, __LINE__);
- #endif
- next = (struct list *) ptr;
- #ifdef RL_DEBUG
- printf(" (struct list *)next (0%o / 0x%x / %d) ->\n", next, next, next);
- printf(" next = 0%o / 0x%x / %d\n", next->next,next->next,next->next);
- printf(" prev = 0%o / 0x%x / %d\n", next->prev,next->prev,next->prev);
- printf(" (struct list *)prev (0%o / 0x%x / %d)->\n", prev, prev, prev);
- printf(" next = 0%o / 0x%x / %d\n", prev->next,prev->next,prev->next);
- printf(" prev = 0%o / 0x%x / %d\n", prev->prev,prev->prev,prev->prev);
- #endif
- next->next = prev->next;
- next->prev = prev;
- prev->next = next;
- if (next->next != NULL)
- next->next->prev = next;
- ++_heapinfo[block].busy.info.frag.nfree;
- }
- else
- {
- /* No fragments of this block are free, so link this
- fragment into the fragment list and announce that
- it is the first free fragment of this block. */
- prev = (struct list *) ptr;
- _heapinfo[block].busy.info.frag.nfree = 1;
- _heapinfo[block].busy.info.frag.first = (unsigned long int)
- ((unsigned long int) ((char *) ptr - (char *) NULL)
- % BLOCKSIZE >> type);
- prev->next = _fraghead[type].next;
- prev->prev = &_fraghead[type];
- prev->prev->next = prev;
- if (prev->next != NULL)
- prev->next->prev = prev;
- }
- break;
- }
- }
-
- /* Return memory to the heap. */
- void
- free (ptr)
- __ptr_t ptr;
- {
- register struct alignlist *l;
-
- if (ptr == NULL)
- return;
-
- for (l = _aligned_blocks; l != NULL; l = l->next)
- if (l->aligned == ptr)
- {
- l->aligned = NULL; /* Mark the slot in the list as free. */
- ptr = l->exact;
- break;
- }
-
- if (__free_hook != NULL)
- (*__free_hook) (ptr);
- else
- _free_internal (ptr);
- }
- /* Change the size of a block allocated by `malloc'.
- Copyright 1990, 1991, 1992, 1993 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- #define min(A, B) ((A) < (B) ? (A) : (B))
-
- /* Debugging hook for realloc. */
- #ifdef VMS
- __ptr_t (*__realloc_hook) __P ((__ptr_t __ptr, size_t __size)) = __vms_realloc;
- #else
- __ptr_t (*__realloc_hook) __P ((__ptr_t __ptr, size_t __size));
- #endif
-
- /* Resize the given region to the new size, returning a pointer
- to the (possibly moved) region. This is optimized for speed;
- some benchmarks seem to indicate that greater compactness is
- achieved by unconditionally allocating and copying to a
- new region. This module has incestuous knowledge of the
- internals of both free and malloc. */
- __ptr_t
- realloc (ptr, size)
- __ptr_t ptr;
- size_t size;
- {
- __ptr_t result;
- int type;
- size_t block, blocks, oldlimit;
-
- if (size == 0)
- {
- free (ptr);
- return malloc (0);
- }
- else if (ptr == NULL)
- return malloc (size);
-
- if (__realloc_hook != NULL)
- return (*__realloc_hook) (ptr, size);
-
- block = BLOCK (ptr);
-
- type = _heapinfo[block].busy.type;
- switch (type)
- {
- case 0:
- /* Maybe reallocate a large block to a small fragment. */
- if (size <= BLOCKSIZE / 2)
- {
- result = malloc (size);
- if (result != NULL)
- {
- memcpy (result, ptr, size);
- free (ptr);
- return result;
- }
- }
-
- /* The new size is a large allocation as well;
- see if we can hold it in place. */
- blocks = BLOCKIFY (size);
- if (blocks < _heapinfo[block].busy.info.size)
- {
- /* The new size is smaller; return
- excess memory to the free list. */
- _heapinfo[block + blocks].busy.type = 0;
- _heapinfo[block + blocks].busy.info.size
- = _heapinfo[block].busy.info.size - blocks;
- _heapinfo[block].busy.info.size = blocks;
- free (ADDRESS (block + blocks));
- result = ptr;
- }
- else if (blocks == _heapinfo[block].busy.info.size)
- /* No size change necessary. */
- result = ptr;
- else
- {
- /* Won't fit, so allocate a new region that will.
- Free the old region first in case there is sufficient
- adjacent free space to grow without moving. */
- blocks = _heapinfo[block].busy.info.size;
- /* Prevent free from actually returning memory to the system. */
- oldlimit = _heaplimit;
- _heaplimit = 0;
- free (ptr);
- _heaplimit = oldlimit;
- result = malloc (size);
- if (result == NULL)
- {
- /* Now we're really in trouble. We have to unfree
- the thing we just freed. Unfortunately it might
- have been coalesced with its neighbors. */
- if (_heapindex == block)
- (void) malloc (blocks * BLOCKSIZE);
- else
- {
- __ptr_t previous = malloc ((block - _heapindex) * BLOCKSIZE);
- (void) malloc (blocks * BLOCKSIZE);
- free (previous);
- }
- return NULL;
- }
- if (ptr != result)
- memmove (result, ptr, blocks * BLOCKSIZE);
- }
- break;
-
- default:
- /* Old size is a fragment; type is logarithm
- to base two of the fragment size. */
- if (size > (size_t) (1 << (type - 1)) && size <= (size_t) (1 << type))
- /* The new size is the same kind of fragment. */
- result = ptr;
- else
- {
- /* The new size is different; allocate a new space,
- and copy the lesser of the new size and the old. */
- result = malloc (size);
- if (result == NULL)
- return NULL;
- memcpy (result, ptr, min (size, (size_t) 1 << type));
- free (ptr);
- }
- break;
- }
-
- return result;
- }
- /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
-
- 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- /* Allocate an array of NMEMB elements each SIZE bytes long.
- The entire array is initialized to zeros. */
- __ptr_t
- calloc (nmemb, size)
- register size_t nmemb;
- register size_t size;
- {
- register __ptr_t result = malloc (nmemb * size);
-
- if (result != NULL)
- (void) memset (result, 0, nmemb * size);
-
- return result;
- }
- /* Copyright (C) 1991, 1992 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 General Public License as published by
- the Free Software Foundation; either version 2, 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with the GNU C Library; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef _MALLOC_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- #ifndef __GNU_LIBRARY__
- #define __sbrk sbrk
- #ifdef VMS
- #define __brk brk
- #endif
- #endif
-
- extern __ptr_t __sbrk __P ((int increment));
-
- #ifndef NULL
- #define NULL 0
- #endif
-
- #if defined(emacs) && defined(VMS)
- /* Dumping of Emacs on VMS does not include the heap!
- So let's make a huge array from which initial data will be
- allocated.
-
- VMS_ALLOCATION_SIZE is the amount of memory we preallocate.
- We don't want it to be too large, because it only gives a larger
- dump file. The way to check how much is really used is to
- make VMS_ALLOCATION_SIZE very large, to link Emacs with the
- debugger, run Emacs, check how much was allocated. Then set
- VMS_ALLOCATION_SIZE to something suitable, recompile gmalloc,
- relink Emacs, and you should be off.
-
- N.B. This is experimental, but it worked quite fine on Emacs 18.
- */
- #ifndef VMS_ALLOCATION_SIZE
- #define VMS_ALLOCATION_SIZE (512*(512+128))
- #endif
-
- int vms_out_initial = 0;
- char vms_initial_buffer[VMS_ALLOCATION_SIZE];
- char *vms_current_brk = vms_initial_buffer;
- char *vms_end_brk = &vms_initial_buffer[VMS_ALLOCATION_SIZE-1];
-
- __ptr_t
- __vms_initial_morecore (increment)
- ptrdiff_t increment;
- {
- __ptr_t result = NULL;
- __ptr_t temp;
-
- /* It's far easier to make the alignment here than to make a
- kludge in align () */
- #ifdef RL_DEBUG
- printf(">>>foo... %p...", vms_current_brk);
- #endif
- vms_current_brk += (BLOCKSIZE - ((unsigned long) vms_current_brk
- & (BLOCKSIZE - 1))) & (BLOCKSIZE - 1);
- #ifdef RL_DEBUG
- printf("bar... %p. (%d)\n", vms_current_brk, increment);
- #endif
- temp = vms_current_brk + (int) increment;
- if (temp <= vms_end_brk)
- {
- if (increment >= 0)
- result = vms_current_brk;
- else
- result = temp;
- vms_current_brk = temp;
- }
- return result;
- }
-
- __ptr_t
- __vms_initial_lesscore (ptr, size)
- __ptr_t ptr;
- ptrdiff_t size;
- {
- if (ptr >= vms_initial_buffer
- && ptr < vms_initial_buffer+VMS_ALLOCATION_SIZE)
- {
- vms_current_brk = ptr;
- return vms_current_brk;
- }
- return vms_current_brk;
- }
-
- VMS_present_buffer()
- {
- printf("Vms initial buffer starts at 0%o/0x%x/%d and ends at 0%o/0x%x/%d\n",
- vms_initial_buffer, vms_initial_buffer, vms_initial_buffer,
- vms_end_brk, vms_end_brk, vms_end_brk);
- }
- #endif /* defined(emacs) && defined(VMS) */
-
- #ifdef VMS
- /* Unfortunatelly, the VAX C sbrk() is buggy. For example, it returns
- memory in 512 byte chunks (not a bug, but there's more), AND it
- adds an extra 512 byte chunk if you ask for a multiple of 512
- bytes (you ask for 512 bytes, you get 1024 bytes...). And also,
- the VAX C sbrk does not handle negative increments...
- There's a similar problem with brk(). Even if you set the break
- to an even page boundary, it gives you one extra page... */
-
- static char vms_brk_info_fetched = -1; /* -1 if this is the first time, otherwise
- bit 0 set if 'increment' needs adjustment
- bit 1 set if the value to brk() needs adjustment */
- static char *vms_brk_start = 0;
- static char *vms_brk_end = 0;
- static char *vms_brk_current = 0;
- #endif
-
- /* Allocate INCREMENT more bytes of data space,
- and return the start of data space, or NULL on errors.
- If INCREMENT is negative, shrink data space. */
- __ptr_t
- __default_morecore (increment)
- ptrdiff_t increment;
- {
- __ptr_t result;
- #ifdef VMS
- __ptr_t temp;
-
- #ifdef RL_DEBUG
- printf("DEBUG: morecore: increment = %x\n", increment);
- printf(" @ start: vms_brk_info_fetched = %x\n", vms_brk_info_fetched);
- printf(" vms_brk_start = %p\n", vms_brk_start);
- printf(" vms_brk_current = %p\n", vms_brk_current);
- printf(" vms_brk_end = %p\n", vms_brk_end);
- printf(" @ end: ");
- #endif
-
- if (vms_brk_info_fetched < 0)
- {
- vms_brk_current = vms_brk_start = __sbrk (512);
- vms_brk_end = __sbrk (0);
- if (vms_brk_end - vms_brk_current == 1024)
- vms_brk_info_fetched = 1;
- else
- vms_brk_info_fetched = 0;
- vms_brk_end = brk(vms_brk_start);
- if (vms_brk_end != vms_brk_start)
- vms_brk_info_fetched |= 2;
- #ifdef RL_DEBUG
- printf("vms_brk_info_fetched = %x\n", vms_brk_info_fetched);
- printf(" vms_brk_start = %p\n", vms_brk_start);
- printf(" vms_brk_current = %p\n", vms_brk_current);
- printf(" vms_brk_end = %p\n", vms_brk_end);
- printf(" ");
- #endif
- }
-
- if (increment < 0)
- {
- printf("BZZZZZT! ERROR: __default_morecore does NOT take negative args\n");
- return NULL;
- }
-
- if (increment > 0)
- {
- result = vms_brk_current;
- temp = vms_brk_current + increment;
-
- if (temp > vms_brk_end)
- {
- __ptr_t foo;
-
- foo = __sbrk (0);
- if (foo == vms_brk_end)
- {
- increment = temp - vms_brk_end;
- if (increment > (vms_brk_info_fetched & 1))
- increment -= (vms_brk_info_fetched & 1);
- foo = __sbrk(increment);
- #ifdef RL_DEBUG
- printf("__sbrk(%d) --> %p\n", increment, foo);
- #endif
- if (foo == (__ptr_t) -1)
- return NULL;
- #ifdef RL_DEBUG
- printf(" ");
- #endif
- }
- else
- {
- result = __sbrk (increment);
-
- if (result == (__ptr_t) -1)
- return NULL;
-
- temp = result + increment;
- }
-
- vms_brk_end = __sbrk(0);
- }
- vms_brk_current = temp;
- #ifdef RL_DEBUG
- printf("vms_brk_current = %p\n", vms_brk_current);
- printf(" vms_brk_end = %p\n", vms_brk_end);
- #endif
- return result;
- }
- #ifdef RL_DEBUG
- printf(" nothing more...\n");
- #endif
-
- /* OK, so the user wanted to check where the heap limit is. Let's
- see if the system thinks it is where we think it is. */
- temp = __sbrk (0);
- if (temp != vms_brk_end)
- {
- /* the value has changed.
- Let's trust the system and modify our value */
- vms_brk_current = vms_brk_end = temp;
- }
- return vms_brk_current;
-
- #else /* not VMS */
- result = __sbrk ((int) increment);
- if (result == (__ptr_t) -1)
- return NULL;
- return result;
- #endif /* VMS */
- }
-
- __ptr_t
- __default_lesscore (ptr, size)
- __ptr_t ptr;
- ptrdiff_t size;
- {
- #ifdef VMS
- if (vms_brk_end != 0)
- {
- vms_brk_current = ptr;
- if (vms_brk_current < vms_brk_start)
- vms_brk_current = vms_brk_start;
- vms_brk_end = (char *) vms_brk_current -
- ((vms_brk_info_fetched >> 1) & 1);
- #ifdef RL_DEBUG
- printf("<<<bar... %p (%p (%p, %d))...",
- vms_brk_end, vms_brk_current, ptr, size);
- #endif
- vms_brk_end = __brk (vms_brk_end);
- #ifdef RL_DEBUG
- printf("foo... %p.\n", vms_brk_end);
- #endif
- }
-
- return vms_brk_current;
- #else /* not VMS */
- __default_morecore (-size);
- #endif
- }
-
- /* Allocate memory on a page boundary.
- Copyright (C) 1991, 1992 Free Software Foundation, Inc.
-
- 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- #if defined (emacs) || defined (HAVE_CONFIG_H)
- #include "config.h"
- #endif
-
- #ifdef __GNU_LIBRARY__
- extern size_t __getpagesize __P ((void));
- #else
- #if !defined(USG) && !defined(VMS)
- extern size_t getpagesize __P ((void));
- #define __getpagesize() getpagesize()
- #else
- #include <sys/param.h>
- #ifdef EXEC_PAGESIZE
- #define __getpagesize() EXEC_PAGESIZE
- #else /* No EXEC_PAGESIZE. */
- #ifdef NBPG
- #ifndef CLSIZE
- #define CLSIZE 1
- #endif /* No CLSIZE. */
- #define __getpagesize() (NBPG * CLSIZE)
- #else /* No NBPG. */
- #define __getpagesize() NBPC
- #endif /* NBPG. */
- #endif /* EXEC_PAGESIZE. */
- #endif /* USG. */
- #endif
-
- static size_t pagesize;
-
- __ptr_t
- valloc (size)
- size_t size;
- {
- if (pagesize == 0)
- pagesize = __getpagesize ();
-
- return memalign (pagesize, size);
- }
- /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
-
- 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. */
-
- #ifndef _MALLOC_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- __ptr_t
- memalign (alignment, size)
- size_t alignment;
- size_t size;
- {
- __ptr_t result;
- unsigned long int adj;
-
- size = ((size + alignment - 1) / alignment) * alignment;
-
- result = malloc (size);
- if (result == NULL)
- return NULL;
- adj = (unsigned long int) ((unsigned long int) ((char *) result -
- (char *) NULL)) % alignment;
- if (adj != 0)
- {
- struct alignlist *l;
- for (l = _aligned_blocks; l != NULL; l = l->next)
- if (l->aligned == NULL)
- /* This slot is free. Use it. */
- break;
- if (l == NULL)
- {
- l = (struct alignlist *) malloc (sizeof (struct alignlist));
- if (l == NULL)
- {
- free (result);
- return NULL;
- }
- }
- l->exact = result;
- result = l->aligned = (char *) result + alignment - adj;
- l->next = _aligned_blocks;
- _aligned_blocks = l;
- }
-
- return result;
- }
-
- #ifdef VMS
- struct vms_malloc_data
- {
- int __malloc_initialized;
- char *_heapbase;
- malloc_info *_heapinfo;
- size_t heapsize;
- size_t _heapindex;
- size_t _heaplimit;
- size_t _chunks_used;
- size_t _bytes_used;
- size_t _chunks_free;
- size_t _bytes_free;
- } ____vms_malloc_data[] =
- {
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
- };
-
- struct vms_core_routines
- {
- __ptr_t (*__morecore) __P ((ptrdiff_t increment));
- __ptr_t (*__lesscore) __P ((__ptr_t address, ptrdiff_t increment));
- } ____vms_core_routines[] =
- {
- { __vms_initial_morecore, __vms_initial_lesscore },
- { __default_morecore, __default_lesscore },
- { 0, 0 }
- };
-
- static int current_vms_data = -1;
- static int current_vms_core_routines = 0;
-
- static void use_vms_core_routines (int i)
- {
- current_vms_core_routines = i;
- current_vms_data = i;
- }
-
- static void use_vms_data (int i)
- {
- use_vms_core_routines (i);
- __malloc_initialized = ____vms_malloc_data[i].__malloc_initialized;
- _heapbase = ____vms_malloc_data[i]._heapbase;
- _heapinfo = ____vms_malloc_data[i]._heapinfo;
- heapsize = ____vms_malloc_data[i].heapsize;
- _heapindex = ____vms_malloc_data[i]._heapindex;
- _heaplimit = ____vms_malloc_data[i]._heaplimit;
- _chunks_used = ____vms_malloc_data[i]._chunks_used;
- _bytes_used = ____vms_malloc_data[i]._bytes_used;
- _chunks_free = ____vms_malloc_data[i]._chunks_free;
- _bytes_free = ____vms_malloc_data[i]._bytes_free;
- }
-
- static void store_vms_data (int i)
- {
- ____vms_malloc_data[i].__malloc_initialized = __malloc_initialized;
- ____vms_malloc_data[i]._heapbase = _heapbase;
- ____vms_malloc_data[i]._heapinfo = _heapinfo;
- ____vms_malloc_data[i].heapsize = heapsize;
- ____vms_malloc_data[i]._heapindex = _heapindex;
- ____vms_malloc_data[i]._heaplimit = _heaplimit;
- ____vms_malloc_data[i]._chunks_used = _chunks_used;
- ____vms_malloc_data[i]._bytes_used = _bytes_used;
- ____vms_malloc_data[i]._chunks_free = _chunks_free;
- ____vms_malloc_data[i]._bytes_free = _bytes_free;
- }
-
- static void store_current_vms_data ()
- {
- switch (current_vms_data)
- {
- case 0:
- case 1:
- store_vms_data (current_vms_data);
- break;
- }
- }
-
- __ptr_t __vms_morecore (increment)
- ptrdiff_t increment;
- {
- return
- (*____vms_core_routines[current_vms_core_routines].__morecore) (increment);
- }
-
- __ptr_t __vms_lesscore (ptr, increment)
- __ptr_t ptr;
- ptrdiff_t increment;
- {
- return
- (*____vms_core_routines[current_vms_core_routines].__lesscore) (ptr,increment);
- }
-
- __ptr_t __vms_malloc (size)
- size_t size;
- {
- __ptr_t result;
- int old_current_vms_data = current_vms_data;
-
- __malloc_hook = 0;
-
- store_current_vms_data ();
-
- if (____vms_malloc_data[0]._heapbase != 0)
- use_vms_data (0);
- else
- use_vms_core_routines (0);
- result = malloc (size);
- store_vms_data (0);
- if (result == NULL)
- {
- use_vms_data (1);
- result = malloc (size);
- store_vms_data (1);
- vms_out_initial = 1;
- }
- __malloc_hook = __vms_malloc;
- if (old_current_vms_data != -1)
- use_vms_data (current_vms_data);
- return result;
- }
-
- void __vms_free (ptr)
- __ptr_t ptr;
- {
- int old_current_vms_data = current_vms_data;
-
- __free_hook = 0;
-
- store_current_vms_data ();
-
- if (ptr >= vms_initial_buffer && ptr <= vms_end_brk)
- {
- use_vms_data (0);
- free (ptr);
- store_vms_data (0);
- }
- else
- {
- use_vms_data (1);
- free (ptr);
- store_vms_data (1);
- if (_chunks_free == 0 && _chunks_used == 0)
- vms_out_initial = 0;
- }
- __free_hook = __vms_free;
- if (old_current_vms_data != -1)
- use_vms_data (current_vms_data);
- }
-
- __ptr_t __vms_realloc (ptr, size)
- __ptr_t ptr;
- size_t size;
- {
- __ptr_t result;
- int old_current_vms_data = current_vms_data;
-
- __realloc_hook = 0;
-
- store_current_vms_data ();
-
- if (ptr >= vms_initial_buffer && ptr <= vms_end_brk)
- {
- use_vms_data (0);
- result = realloc (ptr, size);
- store_vms_data (0);
- }
- else
- {
- use_vms_data (1);
- result = realloc (ptr, size);
- store_vms_data (1);
- }
- __realloc_hook = __vms_realloc;
- if (old_current_vms_data != -1)
- use_vms_data (current_vms_data);
- return result;
- }
- #endif /* VMS */
- /* Standard debugging hooks for `malloc'.
- Copyright 1990, 1991, 1992 Free Software Foundation
- 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- /* Old hook values. */
- static void (*old_free_hook) __P ((__ptr_t ptr));
- static __ptr_t (*old_malloc_hook) __P ((size_t size));
- static __ptr_t (*old_realloc_hook) __P ((__ptr_t ptr, size_t size));
-
- /* Function to call when something awful happens. */
- static void (*abortfunc) __P ((void));
-
- /* Arbitrary magical numbers. */
- #define MAGICWORD 0xfedabeeb
- #define MAGICBYTE ((char) 0xd7)
-
- struct hdr
- {
- size_t size; /* Exact size requested by user. */
- unsigned long int magic; /* Magic number to check header integrity. */
- };
-
- static void checkhdr __P ((__const struct hdr *));
- static void
- checkhdr (hdr)
- __const struct hdr *hdr;
- {
- if (hdr->magic != MAGICWORD || ((char *) &hdr[1])[hdr->size] != MAGICBYTE)
- (*abortfunc) ();
- }
-
- static void freehook __P ((__ptr_t));
- static void
- freehook (ptr)
- __ptr_t ptr;
- {
- struct hdr *hdr = ((struct hdr *) ptr) - 1;
- checkhdr (hdr);
- hdr->magic = 0;
- __free_hook = old_free_hook;
- free (hdr);
- __free_hook = freehook;
- }
-
- static __ptr_t mallochook __P ((size_t));
- static __ptr_t
- mallochook (size)
- size_t size;
- {
- struct hdr *hdr;
-
- __malloc_hook = old_malloc_hook;
- hdr = (struct hdr *) malloc (sizeof (struct hdr) + size + 1);
- __malloc_hook = mallochook;
- if (hdr == NULL)
- return NULL;
-
- hdr->size = size;
- hdr->magic = MAGICWORD;
- ((char *) &hdr[1])[size] = MAGICBYTE;
- return (__ptr_t) (hdr + 1);
- }
-
- static __ptr_t reallochook __P ((__ptr_t, size_t));
- static __ptr_t
- reallochook (ptr, size)
- __ptr_t ptr;
- size_t size;
- {
- struct hdr *hdr = ((struct hdr *) ptr) - 1;
-
- checkhdr (hdr);
- __free_hook = old_free_hook;
- __malloc_hook = old_malloc_hook;
- __realloc_hook = old_realloc_hook;
- hdr = (struct hdr *) realloc ((__ptr_t) hdr, sizeof (struct hdr) + size + 1);
- __free_hook = freehook;
- __malloc_hook = mallochook;
- __realloc_hook = reallochook;
- if (hdr == NULL)
- return NULL;
-
- hdr->size = size;
- ((char *) &hdr[1])[size] = MAGICBYTE;
- return (__ptr_t) (hdr + 1);
- }
-
- int
- mcheck (func)
- void (*func) __P ((void));
- {
- extern void abort __P ((void));
- static int mcheck_used = 0;
-
- abortfunc = (func != NULL) ? func : abort;
-
- /* These hooks may not be safely inserted if malloc is already in use. */
- if (!__malloc_initialized && !mcheck_used)
- {
- old_free_hook = __free_hook;
- __free_hook = freehook;
- old_malloc_hook = __malloc_hook;
- __malloc_hook = mallochook;
- old_realloc_hook = __realloc_hook;
- __realloc_hook = reallochook;
- mcheck_used = 1;
- }
-
- return mcheck_used ? 0 : -1;
- }
- /* More debugging hooks for `malloc'.
- Copyright (C) 1991, 1992 Free Software Foundation, Inc.
- Written April 2, 1991 by John Gilmore of Cygnus Support.
- Based on mcheck.c 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- #include <stdio.h>
-
- #ifndef __GNU_LIBRARY__
- extern char *getenv ();
- #else
- #include <stdlib.h>
- #endif
-
- static FILE *mallstream;
- static char mallenv[]= "MALLOC_TRACE";
- static char mallbuf[BUFSIZ]; /* Buffer for the output. */
-
- /* Address to breakpoint on accesses to... */
- __ptr_t mallwatch;
-
- /* Old hook values. */
- static __ptr_t (*tr_old_morecore) __P ((ptrdiff_t increment));
- static __ptr_t (*tr_old_lesscore) __P ((__ptr_t ptr, ptrdiff_t increment));
- static void (*tr_old_free_hook) __P ((__ptr_t ptr));
- static __ptr_t (*tr_old_malloc_hook) __P ((size_t size));
- static __ptr_t (*tr_old_realloc_hook) __P ((__ptr_t ptr, size_t size));
-
- /* This function is called when the block being alloc'd, realloc'd, or
- freed has an address matching the variable "mallwatch". In a debugger,
- set "mallwatch" to the address of interest, then put a breakpoint on
- tr_break. */
-
- void tr_break __P ((void));
- void
- tr_break ()
- {
- }
-
- static void tr_freehook __P ((__ptr_t));
- static void
- tr_freehook (ptr)
- __ptr_t ptr;
- {
- fprintf (mallstream, "- %p\n", ptr); /* Be sure to print it first. */
- if (ptr == mallwatch)
- tr_break ();
- __free_hook = tr_old_free_hook;
- free (ptr);
- __free_hook = tr_freehook;
- }
-
- static __ptr_t tr_morecore __P ((ptrdiff_t));
- static __ptr_t
- tr_morecore (increment)
- ptrdiff_t increment;
- {
- __ptr_t p;
-
- __morecore = tr_old_morecore;
- p = (__ptr_t) (*__morecore) (increment);
- __morecore = tr_morecore;
-
- fprintf (mallstream, "$ %p %d\n", p, increment);
-
- return p;
- }
-
- static __ptr_t tr_lesscore __P ((__ptr_t, ptrdiff_t));
- static __ptr_t
- tr_lesscore (ptr, increment)
- __ptr_t ptr;
- ptrdiff_t increment;
- {
- __ptr_t p;
-
- __lesscore = tr_old_lesscore;
- p = (__ptr_t) (*__lesscore) (ptr, increment);
- __lesscore = tr_lesscore;
-
- fprintf (mallstream, "* %p (%p, %d)\n", p, ptr, increment);
-
- return p;
- }
-
- static __ptr_t tr_mallochook __P ((size_t));
- static __ptr_t
- tr_mallochook (size)
- size_t size;
- {
- __ptr_t hdr;
-
- __malloc_hook = tr_old_malloc_hook;
- hdr = (__ptr_t) malloc (size);
- __malloc_hook = tr_mallochook;
-
- /* We could be printing a NULL here; that's OK. */
- fprintf (mallstream, "+ %p %x\n", hdr, size);
-
- if (hdr == mallwatch)
- tr_break ();
-
- return hdr;
- }
-
- static __ptr_t tr_reallochook __P ((__ptr_t, size_t));
- static __ptr_t
- tr_reallochook (ptr, size)
- __ptr_t ptr;
- size_t size;
- {
- __ptr_t hdr;
-
- if (ptr == mallwatch)
- tr_break ();
-
- __free_hook = tr_old_free_hook;
- __malloc_hook = tr_old_malloc_hook;
- __realloc_hook = tr_old_realloc_hook;
- hdr = (__ptr_t) realloc (ptr, size);
- __free_hook = tr_freehook;
- __malloc_hook = tr_mallochook;
- __realloc_hook = tr_reallochook;
- if (hdr == NULL)
- /* Failed realloc. */
- fprintf (mallstream, "! %p %x\n", ptr, size);
- else
- fprintf (mallstream, "< %p\n> %p %x\n", ptr, hdr, size);
-
- if (hdr == mallwatch)
- tr_break ();
-
- return hdr;
- }
-
- /* We enable tracing if either the environment variable MALLOC_TRACE
- is set, or if the variable mallwatch has been patched to an address
- that the debugging user wants us to stop on. When patching mallwatch,
- don't forget to set a breakpoint on tr_break! */
-
- void
- mtrace ()
- {
- char *mallfile;
-
- mallfile = getenv (mallenv);
- if (mallfile != NULL || mallwatch != NULL)
- {
- mallstream = fopen (mallfile != NULL ? mallfile : "/dev/null", "w");
- if (mallstream != NULL)
- {
- /* Be sure it doesn't malloc its buffer! */
- setbuf (mallstream, mallbuf);
- fprintf (mallstream, "= Start\n");
- #if defined(emacs) && defined(VMS)
- fprintf (mallstream, "= Initial buffer spans %p -- %p\n",
- vms_initial_buffer, vms_end_brk + 1);
- #endif
- tr_old_morecore = __morecore;
- __morecore = tr_morecore;
- tr_old_lesscore = __lesscore;
- __lesscore = tr_lesscore;
- tr_old_free_hook = __free_hook;
- __free_hook = tr_freehook;
- tr_old_malloc_hook = __malloc_hook;
- __malloc_hook = tr_mallochook;
- tr_old_realloc_hook = __realloc_hook;
- __realloc_hook = tr_reallochook;
- }
- }
- }
- /* Access the statistics maintained by `malloc'.
- Copyright 1990, 1991, 1992 Free Software Foundation
- 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_INTERNAL
- #define _MALLOC_INTERNAL
- #include <malloc.h>
- #endif
-
- struct mstats
- mstats ()
- {
- struct mstats result;
-
- result.bytes_total = (char *) (*__morecore) (0) - _heapbase;
- result.chunks_used = _chunks_used;
- result.bytes_used = _bytes_used;
- result.chunks_free = _chunks_free;
- result.bytes_free = _bytes_free;
- return result;
- }
-