/* Block-relocating memory allocator.
- Copyright (C) 1993, 1995, 2000-2012 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1995, 2000-2014 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#ifdef emacs
#include <config.h>
-#include <setjmp.h>
+
#include "lisp.h" /* Needed for VALBITS. */
#include "blockinput.h"
#include <unistd.h>
-typedef POINTER_TYPE *POINTER;
-typedef size_t SIZE;
-
#ifdef DOUG_LEA_MALLOC
#define M_TOP_PAD -2
extern int mallopt (int, int);
#else /* not emacs */
#include <stddef.h>
-
-typedef size_t SIZE;
-typedef void *POINTER;
-
-#include <unistd.h>
#include <malloc.h>
#endif /* not emacs */
#include "getpagesize.h"
-#define NIL ((POINTER) 0)
-
/* A flag to indicate whether we have initialized ralloc yet. For
Emacs's sake, please do not make this local to malloc_init; on some
machines, the dumping procedure makes all static variables
/* Declarations for working with the malloc, ralloc, and system breaks. */
/* Function to set the real break value. */
-POINTER (*real_morecore) (long int);
+void *(*real_morecore) (ptrdiff_t);
/* The break value, as seen by malloc. */
-static POINTER virtual_break_value;
+static void *virtual_break_value;
/* The address of the end of the last data in use by ralloc,
including relocatable blocs as well as malloc data. */
-static POINTER break_value;
+static void *break_value;
/* This is the size of a page. We round memory requests to this boundary. */
static int page_size;
/* Macros for rounding. Note that rounding to any value is possible
by changing the definition of PAGE. */
#define PAGE (getpagesize ())
-#define ALIGNED(addr) (((unsigned long int) (addr) & (page_size - 1)) == 0)
-#define ROUNDUP(size) (((unsigned long int) (size) + page_size - 1) \
- & ~(page_size - 1))
-#define ROUND_TO_PAGE(addr) (addr & (~(page_size - 1)))
+#define PAGE_ROUNDUP(size) (((size_t) (size) + page_size - 1) \
+ & ~((size_t) (page_size - 1)))
#define MEM_ALIGN sizeof (double)
-#define MEM_ROUNDUP(addr) (((unsigned long int)(addr) + MEM_ALIGN - 1) \
- & ~(MEM_ALIGN - 1))
+#define MEM_ROUNDUP(addr) (((size_t) (addr) + MEM_ALIGN - 1) \
+ & ~(MEM_ALIGN - 1))
/* The hook `malloc' uses for the function which gets more space
from the system. */
#ifndef SYSTEM_MALLOC
-extern POINTER (*__morecore) (long int);
+extern void *(*__morecore) (ptrdiff_t);
#endif
struct heap *next;
struct heap *prev;
/* Start of memory range of this heap. */
- POINTER start;
+ void *start;
/* End of memory range of this heap. */
- POINTER end;
+ void *end;
/* Start of relocatable data in this heap. */
- POINTER bloc_start;
+ void *bloc_start;
/* Start of unused space in this heap. */
- POINTER free;
+ void *free;
/* First bloc in this heap. */
struct bp *first_bloc;
/* Last bloc in this heap. */
} *heap_ptr;
#define NIL_HEAP ((heap_ptr) 0)
-#define HEAP_PTR_SIZE (sizeof (struct heap))
/* This is the first heap object.
If we need additional heap objects, each one resides at the beginning of
The data blocks abut each other; if b->next is non-nil, then
b->data + b->size == b->next->data.
- An element with variable==NIL denotes a freed block, which has not yet
+ An element with variable==NULL denotes a freed block, which has not yet
been collected. They may only appear while r_alloc_freeze_level > 0,
and will be freed when the arena is thawed. Currently, these blocs are
not reusable, while the arena is frozen. Very inefficient. */
{
struct bp *next;
struct bp *prev;
- POINTER *variable;
- POINTER data;
- SIZE size;
- POINTER new_data; /* temporarily used for relocation */
+ void **variable;
+ void *data;
+ size_t size;
+ void *new_data; /* temporarily used for relocation */
struct heap *heap; /* Heap this bloc is in. */
} *bloc_ptr;
/* Find the heap that ADDRESS falls within. */
static heap_ptr
-find_heap (POINTER address)
+find_heap (void *address)
{
heap_ptr heap;
Return the address of the space if all went well, or zero if we couldn't
allocate the memory. */
-static POINTER
-obtain (POINTER address, SIZE size)
+static void *
+obtain (void *address, size_t size)
{
heap_ptr heap;
- SIZE already_available;
+ size_t already_available;
/* Find the heap that ADDRESS falls within. */
for (heap = last_heap; heap; heap = heap->prev)
}
if (! heap)
- abort ();
+ emacs_abort ();
/* If we can't fit SIZE bytes in that heap,
try successive later heaps. */
get more space. */
if (heap == NIL_HEAP)
{
- POINTER new = (*real_morecore)(0);
- SIZE get;
+ void *new = real_morecore (0);
+ size_t get;
- already_available = (char *)last_heap->end - (char *)address;
+ already_available = (char *) last_heap->end - (char *) address;
if (new != last_heap->end)
{
/* Someone else called sbrk. Make a new heap. */
heap_ptr new_heap = (heap_ptr) MEM_ROUNDUP (new);
- POINTER bloc_start = (POINTER) MEM_ROUNDUP ((POINTER)(new_heap + 1));
+ void *bloc_start = (void *) MEM_ROUNDUP ((void *) (new_heap + 1));
- if ((*real_morecore) ((char *) bloc_start - (char *) new) != new)
+ if (real_morecore ((char *) bloc_start - (char *) new) != new)
return 0;
new_heap->start = new;
Get some extra, so we can come here less often. */
get = size + extra_bytes - already_available;
- get = (char *) ROUNDUP ((char *)last_heap->end + get)
+ get = (char *) PAGE_ROUNDUP ((char *) last_heap->end + get)
- (char *) last_heap->end;
- if ((*real_morecore) (get) != last_heap->end)
+ if (real_morecore (get) != last_heap->end)
return 0;
last_heap->end = (char *) last_heap->end + get;
relinquish (void)
{
register heap_ptr h;
- long excess = 0;
+ ptrdiff_t excess = 0;
/* Add the amount of space beyond break_value
in all heaps which have extend beyond break_value at all. */
? h->bloc_start : break_value);
}
- if (excess > extra_bytes * 2 && (*real_morecore) (0) == last_heap->end)
+ if (excess > extra_bytes * 2 && real_morecore (0) == last_heap->end)
{
/* Keep extra_bytes worth of empty space.
And don't free anything unless we can free at least extra_bytes. */
excess -= extra_bytes;
- if ((char *)last_heap->end - (char *)last_heap->bloc_start <= excess)
+ if ((char *) last_heap->end - (char *) last_heap->bloc_start <= excess)
{
- /* This heap should have no blocs in it. */
+ heap_ptr lh_prev;
+
+ /* This heap should have no blocs in it. If it does, we
+ cannot return it to the system. */
if (last_heap->first_bloc != NIL_BLOC
|| last_heap->last_bloc != NIL_BLOC)
- abort ();
+ return;
/* Return the last heap, with its header, to the system. */
- excess = (char *)last_heap->end - (char *)last_heap->start;
- last_heap = last_heap->prev;
- last_heap->next = NIL_HEAP;
+ excess = (char *) last_heap->end - (char *) last_heap->start;
+ lh_prev = last_heap->prev;
+ /* If the system doesn't want that much memory back, leave
+ last_heap unaltered to reflect that. This can occur if
+ break_value is still within the original data segment. */
+ if (real_morecore (- excess) != 0)
+ {
+ last_heap = lh_prev;
+ last_heap->next = NIL_HEAP;
+ }
}
else
{
- excess = (char *) last_heap->end
- - (char *) ROUNDUP ((char *)last_heap->end - excess);
- last_heap->end = (char *) last_heap->end - excess;
- }
-
- if ((*real_morecore) (- excess) == 0)
- {
- /* If the system didn't want that much memory back, adjust
- the end of the last heap to reflect that. This can occur
- if break_value is still within the original data segment. */
- last_heap->end = (char *) last_heap->end + excess;
- /* Make sure that the result of the adjustment is accurate.
- It should be, for the else clause above; the other case,
- which returns the entire last heap to the system, seems
- unlikely to trigger this mode of failure. */
- if (last_heap->end != (*real_morecore) (0))
- abort ();
+ excess = ((char *) last_heap->end
+ - (char *) PAGE_ROUNDUP ((char *) last_heap->end - excess));
+ /* If the system doesn't want that much memory back, leave
+ the end of the last heap unchanged to reflect that. This
+ can occur if break_value is still within the original
+ data segment. */
+ if (real_morecore (- excess) != 0)
+ last_heap->end = (char *) last_heap->end - excess;
}
}
}
-
-/* Return the total size in use by relocating allocator,
- above where malloc gets space. */
-
-long
-r_alloc_size_in_use (void)
-{
- return (char *) break_value - (char *) virtual_break_value;
-}
\f
/* The meat - allocating, freeing, and relocating blocs. */
to that block. */
static bloc_ptr
-find_bloc (POINTER *ptr)
+find_bloc (void **ptr)
{
- register bloc_ptr p = first_bloc;
+ bloc_ptr p = first_bloc;
while (p != NIL_BLOC)
{
memory for the new block. */
static bloc_ptr
-get_bloc (SIZE size)
+get_bloc (size_t size)
{
- register bloc_ptr new_bloc;
- register heap_ptr heap;
+ bloc_ptr new_bloc;
+ heap_ptr heap;
- if (! (new_bloc = (bloc_ptr) malloc (BLOC_PTR_SIZE))
+ if (! (new_bloc = malloc (BLOC_PTR_SIZE))
|| ! (new_bloc->data = obtain (break_value, size)))
{
free (new_bloc);
new_bloc->size = size;
new_bloc->next = NIL_BLOC;
- new_bloc->variable = (POINTER *) NIL;
+ new_bloc->variable = NULL;
new_bloc->new_data = 0;
/* Record in the heap that this space is in use. */
Do not touch the contents of blocs or break_value. */
static int
-relocate_blocs (bloc_ptr bloc, heap_ptr heap, POINTER address)
+relocate_blocs (bloc_ptr bloc, heap_ptr heap, void *address)
{
- register bloc_ptr b = bloc;
+ bloc_ptr b = bloc;
/* No need to ever call this if arena is frozen, bug somewhere! */
if (r_alloc_freeze_level)
- abort ();
+ emacs_abort ();
while (b)
{
get enough new space to hold BLOC and all following blocs. */
if (heap == NIL_HEAP)
{
- register bloc_ptr tb = b;
- register SIZE s = 0;
+ bloc_ptr tb = b;
+ size_t s = 0;
/* Add up the size of all the following blocs. */
while (tb != NIL_BLOC)
that come after BLOC in memory. */
static int
-resize_bloc (bloc_ptr bloc, SIZE size)
+resize_bloc (bloc_ptr bloc, size_t size)
{
- register bloc_ptr b;
+ bloc_ptr b;
heap_ptr heap;
- POINTER address;
- SIZE old_size;
+ void *address;
+ size_t old_size;
/* No need to ever call this if arena is frozen, bug somewhere! */
if (r_alloc_freeze_level)
- abort ();
+ emacs_abort ();
if (bloc == NIL_BLOC || size == bloc->size)
return 1;
}
if (heap == NIL_HEAP)
- abort ();
+ emacs_abort ();
old_size = bloc->size;
bloc->size = size;
free_bloc (bloc_ptr bloc)
{
heap_ptr heap = bloc->heap;
+ heap_ptr h;
if (r_alloc_freeze_level)
{
- bloc->variable = (POINTER *) NIL;
+ bloc->variable = NULL;
return;
}
bloc->prev->next = bloc->next;
}
- /* Update the records of which blocs are in HEAP. */
- if (heap->first_bloc == bloc)
+ /* Sometimes, 'heap' obtained from bloc->heap above is not really a
+ 'heap' structure. It can even be beyond the current break point,
+ which will cause crashes when we dereference it below (see
+ bug#12242). Evidently, the reason is bloc allocations done while
+ use_relocatable_buffers was non-positive, because additional
+ memory we get then is not recorded in the heaps we manage. If
+ bloc->heap records such a "heap", we cannot (and don't need to)
+ update its records. So we validate the 'heap' value by making
+ sure it is one of the heaps we manage via the heaps linked list,
+ and don't touch a 'heap' that isn't found there. This avoids
+ accessing memory we know nothing about. */
+ for (h = first_heap; h != NIL_HEAP; h = h->next)
+ if (heap == h)
+ break;
+
+ if (h)
{
- if (bloc->next != 0 && bloc->next->heap == heap)
- heap->first_bloc = bloc->next;
- else
- heap->first_bloc = heap->last_bloc = NIL_BLOC;
- }
- if (heap->last_bloc == bloc)
- {
- if (bloc->prev != 0 && bloc->prev->heap == heap)
- heap->last_bloc = bloc->prev;
- else
- heap->first_bloc = heap->last_bloc = NIL_BLOC;
+ /* Update the records of which blocs are in HEAP. */
+ if (heap->first_bloc == bloc)
+ {
+ if (bloc->next != 0 && bloc->next->heap == heap)
+ heap->first_bloc = bloc->next;
+ else
+ heap->first_bloc = heap->last_bloc = NIL_BLOC;
+ }
+ if (heap->last_bloc == bloc)
+ {
+ if (bloc->prev != 0 && bloc->prev->heap == heap)
+ heap->last_bloc = bloc->prev;
+ else
+ heap->first_bloc = heap->last_bloc = NIL_BLOC;
+ }
}
relinquish ();
__morecore hook values - in particular, __default_morecore in the
GNU malloc package. */
-POINTER
-r_alloc_sbrk (long int size)
+static void *
+r_alloc_sbrk (ptrdiff_t size)
{
- register bloc_ptr b;
- POINTER address;
+ bloc_ptr b;
+ void *address;
if (! r_alloc_initialized)
r_alloc_init ();
- if (! use_relocatable_buffers)
- return (*real_morecore) (size);
+ if (use_relocatable_buffers <= 0)
+ return real_morecore (size);
if (size == 0)
return virtual_break_value;
/* Allocate a page-aligned space. GNU malloc would reclaim an
extra space if we passed an unaligned one. But we could
not always find a space which is contiguous to the previous. */
- POINTER new_bloc_start;
+ void *new_bloc_start;
heap_ptr h = first_heap;
- SIZE get = ROUNDUP (size);
+ size_t get = PAGE_ROUNDUP (size);
- address = (POINTER) ROUNDUP (virtual_break_value);
+ address = (void *) PAGE_ROUNDUP (virtual_break_value);
/* Search the list upward for a heap which is large enough. */
- while ((char *) h->end < (char *) MEM_ROUNDUP ((char *)address + get))
+ while ((char *) h->end < (char *) MEM_ROUNDUP ((char *) address + get))
{
h = h->next;
if (h == NIL_HEAP)
break;
- address = (POINTER) ROUNDUP (h->start);
+ address = (void *) PAGE_ROUNDUP (h->start);
}
/* If not found, obtain more space. */
return 0;
if (first_heap == last_heap)
- address = (POINTER) ROUNDUP (virtual_break_value);
+ address = (void *) PAGE_ROUNDUP (virtual_break_value);
else
- address = (POINTER) ROUNDUP (last_heap->start);
+ address = (void *) PAGE_ROUNDUP (last_heap->start);
h = last_heap;
}
- new_bloc_start = (POINTER) MEM_ROUNDUP ((char *)address + get);
+ new_bloc_start = (void *) MEM_ROUNDUP ((char *) address + get);
if (first_heap->bloc_start < new_bloc_start)
{
/* This is no clean solution - no idea how to do it better. */
if (r_alloc_freeze_level)
- return NIL;
+ return NULL;
/* There is a bug here: if the above obtain call succeeded, but the
relocate_blocs call below does not succeed, we need to free
if (! relocate_blocs (first_bloc, h, new_bloc_start))
return 0;
- /* Note that (POINTER)(h+1) <= new_bloc_start since
+ /* Note that (char *) (h + 1) <= (char *) new_bloc_start since
get >= page_size, so the following does not destroy the heap
header. */
for (b = last_bloc; b != NIL_BLOC; b = b->prev)
}
else /* size < 0 */
{
- SIZE excess = (char *)first_heap->bloc_start
- - ((char *)virtual_break_value + size);
+ size_t excess = ((char *) first_heap->bloc_start
+ - ((char *) virtual_break_value + size));
address = virtual_break_value;
{
excess -= extra_bytes;
first_heap->bloc_start
- = (POINTER) MEM_ROUNDUP ((char *)first_heap->bloc_start - excess);
+ = (void *) MEM_ROUNDUP ((char *) first_heap->bloc_start - excess);
relocate_blocs (first_bloc, first_heap, first_heap->bloc_start);
}
}
- if ((char *)virtual_break_value + size < (char *)first_heap->start)
+ if ((char *) virtual_break_value + size < (char *) first_heap->start)
{
/* We found an additional space below the first heap */
- first_heap->start = (POINTER) ((char *)virtual_break_value + size);
+ first_heap->start = (void *) ((char *) virtual_break_value + size);
}
}
- virtual_break_value = (POINTER) ((char *)address + size);
+ virtual_break_value = (void *) ((char *) address + size);
break_value = (last_bloc
? (char *) last_bloc->data + last_bloc->size
: (char *) first_heap->bloc_start);
If we can't allocate the necessary memory, set *PTR to zero, and
return zero. */
-POINTER
-r_alloc (POINTER *ptr, SIZE size)
+void *
+r_alloc (void **ptr, size_t size)
{
- register bloc_ptr new_bloc;
+ bloc_ptr new_bloc;
if (! r_alloc_initialized)
r_alloc_init ();
Store 0 in *PTR to show there's no block allocated. */
void
-r_alloc_free (register POINTER *ptr)
+r_alloc_free (void **ptr)
{
- register bloc_ptr dead_bloc;
+ bloc_ptr dead_bloc;
if (! r_alloc_initialized)
r_alloc_init ();
dead_bloc = find_bloc (ptr);
if (dead_bloc == NIL_BLOC)
- abort (); /* Double free? PTR not originally used to allocate? */
+ emacs_abort (); /* Double free? PTR not originally used to allocate? */
free_bloc (dead_bloc);
*ptr = 0;
If more memory cannot be allocated, then leave *PTR unchanged, and
return zero. */
-POINTER
-r_re_alloc (POINTER *ptr, SIZE size)
+void *
+r_re_alloc (void **ptr, size_t size)
{
- register bloc_ptr bloc;
+ bloc_ptr bloc;
if (! r_alloc_initialized)
r_alloc_init ();
bloc = find_bloc (ptr);
if (bloc == NIL_BLOC)
- abort (); /* Already freed? PTR not originally used to allocate? */
+ emacs_abort (); /* Already freed? PTR not originally used to allocate? */
if (size < bloc->size)
{
{
new_bloc->variable = ptr;
*ptr = new_bloc->data;
- bloc->variable = (POINTER *) NIL;
+ bloc->variable = NULL;
}
else
- return NIL;
+ return NULL;
}
else
{
if (! resize_bloc (bloc, MEM_ROUNDUP (size)))
- return NIL;
+ return NULL;
}
}
return *ptr;
}
-/* Disable relocations, after making room for at least SIZE bytes
- of non-relocatable heap if possible. The relocatable blocs are
- guaranteed to hold still until thawed, even if this means that
- malloc must return a null pointer. */
-
-void
-r_alloc_freeze (long int size)
-{
- if (! r_alloc_initialized)
- r_alloc_init ();
-
- /* If already frozen, we can't make any more room, so don't try. */
- if (r_alloc_freeze_level > 0)
- size = 0;
- /* If we can't get the amount requested, half is better than nothing. */
- while (size > 0 && r_alloc_sbrk (size) == 0)
- size /= 2;
- ++r_alloc_freeze_level;
- if (size > 0)
- r_alloc_sbrk (-size);
-}
-
-void
-r_alloc_thaw (void)
-{
-
- if (! r_alloc_initialized)
- r_alloc_init ();
-
- if (--r_alloc_freeze_level < 0)
- abort ();
-
- /* This frees all unused blocs. It is not too inefficient, as the resize
- and memcpy is done only once. Afterwards, all unreferenced blocs are
- already shrunk to zero size. */
- if (!r_alloc_freeze_level)
- {
- bloc_ptr *b = &first_bloc;
- while (*b)
- if (!(*b)->variable)
- free_bloc (*b);
- else
- b = &(*b)->next;
- }
-}
-
#if defined (emacs) && defined (DOUG_LEA_MALLOC)
return;
assert (first_heap);
- assert (last_heap->end <= (POINTER) sbrk (0));
- assert ((POINTER) first_heap < first_heap->start);
+ assert (last_heap->end <= (void *) sbrk (0));
+ assert ((void *) first_heap < first_heap->start);
assert (first_heap->start <= virtual_break_value);
assert (virtual_break_value <= first_heap->end);
for (h = first_heap; h; h = h->next)
{
assert (h->prev == ph);
- assert ((POINTER) ROUNDUP (h->end) == h->end);
+ assert ((void *) PAGE_ROUNDUP (h->end) == h->end);
#if 0 /* ??? The code in ralloc.c does not really try to ensure
the heap start has any sort of alignment.
Perhaps it should. */
- assert ((POINTER) MEM_ROUNDUP (h->start) == h->start);
+ assert ((void *) MEM_ROUNDUP (h->start) == h->start);
#endif
- assert ((POINTER) MEM_ROUNDUP (h->bloc_start) == h->bloc_start);
+ assert ((void *) MEM_ROUNDUP (h->bloc_start) == h->bloc_start);
assert (h->start <= h->bloc_start && h->bloc_start <= h->end);
if (ph)
{
assert (ph->end < h->start);
- assert (h->start <= (POINTER)h && (POINTER)(h+1) <= h->bloc_start);
+ assert (h->start <= (void *) h && (void *) (h + 1) <= h->bloc_start);
}
if (h->bloc_start <= break_value && break_value <= h->end)
for (b = first_bloc; b; b = b->next)
{
assert (b->prev == pb);
- assert ((POINTER) MEM_ROUNDUP (b->data) == b->data);
- assert ((SIZE) MEM_ROUNDUP (b->size) == b->size);
+ assert ((void *) MEM_ROUNDUP (b->data) == b->data);
+ assert ((size_t) MEM_ROUNDUP (b->size) == b->size);
ph = 0;
for (h = first_heap; h; h = h->next)
is checked to ensure that memory corruption does not occur due to
misuse. */
void
-r_alloc_reset_variable (POINTER *old, POINTER *new)
+r_alloc_reset_variable (void **old, void **new)
{
bloc_ptr bloc = first_bloc;
}
if (bloc == NIL_BLOC || bloc->variable != old)
- abort (); /* Already freed? OLD not originally used to allocate? */
+ emacs_abort (); /* Already freed? OLD not originally used to allocate? */
/* Update variable to point to the new location. */
bloc->variable = new;
void
r_alloc_inhibit_buffer_relocation (int inhibit)
{
- if (use_relocatable_buffers < 0)
- use_relocatable_buffers = 0;
+ if (use_relocatable_buffers > 1)
+ use_relocatable_buffers = 1;
if (inhibit)
- use_relocatable_buffers++;
- else if (use_relocatable_buffers > 0)
use_relocatable_buffers--;
+ else if (use_relocatable_buffers < 1)
+ use_relocatable_buffers++;
}
\f
first_heap = last_heap = &heap_base;
first_heap->next = first_heap->prev = NIL_HEAP;
first_heap->start = first_heap->bloc_start
- = virtual_break_value = break_value = (*real_morecore) (0);
- if (break_value == NIL)
- abort ();
+ = virtual_break_value = break_value = real_morecore (0);
+ if (break_value == NULL)
+ emacs_abort ();
- extra_bytes = ROUNDUP (50000);
+ extra_bytes = PAGE_ROUNDUP (50000);
#endif
#ifdef DOUG_LEA_MALLOC
- BLOCK_INPUT;
+ block_input ();
mallopt (M_TOP_PAD, 64 * 4096);
- UNBLOCK_INPUT;
+ unblock_input ();
#else
#ifndef SYSTEM_MALLOC
- /* Give GNU malloc's morecore some hysteresis
- so that we move all the relocatable blocks much less often. */
- __malloc_extra_blocks = 64;
+ /* Give GNU malloc's morecore some hysteresis so that we move all
+ the relocatable blocks much less often. The number used to be
+ 64, but alloc.c would override that with 32 in code that was
+ removed when SYNC_INPUT became the only input handling mode.
+ That code was conditioned on !DOUG_LEA_MALLOC, so the call to
+ mallopt above is left unchanged. (Actually, I think there's no
+ system nowadays that uses DOUG_LEA_MALLOC and also uses
+ REL_ALLOC.) */
+ __malloc_extra_blocks = 32;
#endif
#endif
#ifndef SYSTEM_MALLOC
- first_heap->end = (POINTER) ROUNDUP (first_heap->start);
+ first_heap->end = (void *) PAGE_ROUNDUP (first_heap->start);
/* The extra call to real_morecore guarantees that the end of the
address space is a multiple of page_size, even if page_size is
which page_size is stored. This allows a binary to be built on a
system with one page size and run on a system with a smaller page
size. */
- (*real_morecore) ((char *) first_heap->end - (char *) first_heap->start);
+ real_morecore ((char *) first_heap->end - (char *) first_heap->start);
/* Clear the rest of the last page; this memory is in our address space
even though it is after the sbrk value. */
HCoop / bpt / emacs.git / blobdiff