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* cygheap.cc: Change most 'int's to 'unsigned's.

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(_cmalloc): Only check for size of malloced region when calculating budget.
Add overhead when performing the sbrk.  Previous change broke _crealloc.
This commit is contained in:
Christopher Faylor
2003-01-18 03:26:07 +00:00
parent e915243911
commit 4c6a3e500e
2 changed files with 16 additions and 11 deletions
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7
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,10 @@
2003-01-17 Christopher Faylor <cgf@redhat.com>
* cygheap.cc: Change most 'int's to 'unsigned's.
(_cmalloc): Only check for size of malloced region when calculating
budget. Add overhead when performing the sbrk. Previous change broke
_crealloc.
2003-01-17 Christopher Faylor <cgf@redhat.com>
* dcrt0.cc (initialize_env): Use colon for CYGWIN_DEBUG separator.

20
winsup/cygwin/cygheap.cc
View File

@@ -38,7 +38,7 @@ struct cygheap_entry
#define NBUCKETS (sizeof (cygheap->buckets) / sizeof (cygheap->buckets[0]))
#define N0 ((_cmalloc_entry *) NULL)
#define to_cmalloc(s) ((_cmalloc_entry *) (((char *) (s)) - (int) (N0->data)))
#define to_cmalloc(s) ((_cmalloc_entry *) (((char *) (s)) - (unsigned) (N0->data)))
#define CFMAP_OPTIONS (SEC_RESERVE | PAGE_READWRITE)
#define MVMAP_OPTIONS (FILE_MAP_WRITE)
@@ -208,18 +208,17 @@ cygheap_init ()
/* Copyright (C) 1997, 2000 DJ Delorie */
static void *_cmalloc (int size) __attribute ((regparm(1)));
static void *__stdcall _crealloc (void *ptr, int size) __attribute ((regparm(2)));
static void *_cmalloc (unsigned size) __attribute ((regparm(1)));
static void *__stdcall _crealloc (void *ptr, unsigned size) __attribute ((regparm(2)));
static void *__stdcall
_cmalloc (int size)
_cmalloc (unsigned size)
{
_cmalloc_entry *rvc;
unsigned b, sz;
/* Calculate "bit bucket" and size as a power of two. */
for (b = 3, sz = 8; sz && sz < (size + sizeof (_cmalloc_entry));
b++, sz <<= 1)
for (b = 3, sz = 8; sz && sz < size; b++, sz <<= 1)
continue;
cygheap_protect->acquire ();
@@ -231,7 +230,7 @@ _cmalloc (int size)
}
else
{
rvc = (_cmalloc_entry *) _csbrk (sz);
rvc = (_cmalloc_entry *) _csbrk (sz + sizeof (_cmalloc_entry));
if (!rvc)
{
cygheap_protect->release ();
@@ -257,16 +256,15 @@ _cfree (void *ptr)
cygheap_protect->release ();
}
static void *__stdcall _crealloc (void *ptr, int size) __attribute__((regparm(2)));
static void *__stdcall
_crealloc (void *ptr, int size)
_crealloc (void *ptr, unsigned size)
{
void *newptr;
if (ptr == NULL)
newptr = _cmalloc (size);
else
{
int oldsize = 1 << to_cmalloc (ptr)->b;
unsigned oldsize = 1 << to_cmalloc (ptr)->b;
if (size <= oldsize)
return ptr;
newptr = _cmalloc (size);
@@ -284,7 +282,7 @@ _crealloc (void *ptr, int size)
#define tocygheap(s) ((cygheap_entry *) (((char *) (s)) - (int) (N->data)))
inline static void *
creturn (cygheap_types x, cygheap_entry * c, int len)
creturn (cygheap_types x, cygheap_entry * c, unsigned len)
{
if (!c)
{