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* 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.
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> 2003-01-17 Christopher Faylor <cgf@redhat.com>
* dcrt0.cc (initialize_env): Use colon for CYGWIN_DEBUG separator. * 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 NBUCKETS (sizeof (cygheap->buckets) / sizeof (cygheap->buckets[0]))
#define N0 ((_cmalloc_entry *) NULL) #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 CFMAP_OPTIONS (SEC_RESERVE | PAGE_READWRITE)
#define MVMAP_OPTIONS (FILE_MAP_WRITE) #define MVMAP_OPTIONS (FILE_MAP_WRITE)
@ -208,18 +208,17 @@ cygheap_init ()
/* Copyright (C) 1997, 2000 DJ Delorie */ /* Copyright (C) 1997, 2000 DJ Delorie */
static void *_cmalloc (int size) __attribute ((regparm(1))); static void *_cmalloc (unsigned size) __attribute ((regparm(1)));
static void *__stdcall _crealloc (void *ptr, int size) __attribute ((regparm(2))); static void *__stdcall _crealloc (void *ptr, unsigned size) __attribute ((regparm(2)));
static void *__stdcall static void *__stdcall
_cmalloc (int size) _cmalloc (unsigned size)
{ {
_cmalloc_entry *rvc; _cmalloc_entry *rvc;
unsigned b, sz; unsigned b, sz;
/* Calculate "bit bucket" and size as a power of two. */ /* Calculate "bit bucket" and size as a power of two. */
for (b = 3, sz = 8; sz && sz < (size + sizeof (_cmalloc_entry)); for (b = 3, sz = 8; sz && sz < size; b++, sz <<= 1)
b++, sz <<= 1)
continue; continue;
cygheap_protect->acquire (); cygheap_protect->acquire ();
@ -231,7 +230,7 @@ _cmalloc (int size)
} }
else else
{ {
rvc = (_cmalloc_entry *) _csbrk (sz); rvc = (_cmalloc_entry *) _csbrk (sz + sizeof (_cmalloc_entry));
if (!rvc) if (!rvc)
{ {
cygheap_protect->release (); cygheap_protect->release ();
@ -257,16 +256,15 @@ _cfree (void *ptr)
cygheap_protect->release (); cygheap_protect->release ();
} }
static void *__stdcall _crealloc (void *ptr, int size) __attribute__((regparm(2)));
static void *__stdcall static void *__stdcall
_crealloc (void *ptr, int size) _crealloc (void *ptr, unsigned size)
{ {
void *newptr; void *newptr;
if (ptr == NULL) if (ptr == NULL)
newptr = _cmalloc (size); newptr = _cmalloc (size);
else else
{ {
int oldsize = 1 << to_cmalloc (ptr)->b; unsigned oldsize = 1 << to_cmalloc (ptr)->b;
if (size <= oldsize) if (size <= oldsize)
return ptr; return ptr;
newptr = _cmalloc (size); newptr = _cmalloc (size);
@ -284,7 +282,7 @@ _crealloc (void *ptr, int size)
#define tocygheap(s) ((cygheap_entry *) (((char *) (s)) - (int) (N->data))) #define tocygheap(s) ((cygheap_entry *) (((char *) (s)) - (int) (N->data)))
inline static void * inline static void *
creturn (cygheap_types x, cygheap_entry * c, int len) creturn (cygheap_types x, cygheap_entry * c, unsigned len)
{ {
if (!c) if (!c)
{ {