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Cygwin: cygheap: use SRWLOCK for cygheap locking 

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2024-03-01 22:24:37 +01:00
parent e2ea60728c
commit 5d3e79ec6b
1 changed files with 6 additions and 7 deletions
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13
winsup/cygwin/mm/cygheap.cc
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@ -35,7 +35,7 @@ static mini_cygheap NO_COPY cygheap_dummy =
init_cygheap NO_COPY *cygheap = (init_cygheap *) &cygheap_dummy;
void NO_COPY *cygheap_max;
static NO_COPY muto cygheap_protect;
static NO_COPY SRWLOCK cygheap_protect = SRWLOCK_INIT;
struct cygheap_entry
{
@ -278,7 +278,6 @@ static const uint32_t bucket_val[NBUCKETS] = {
void
cygheap_init ()
{
cygheap_protect.init ("cygheap_protect");
if (cygheap == &cygheap_dummy)
{
cygheap = (init_cygheap *) VirtualAlloc ((LPVOID) CYGHEAP_STORAGE_LOW,
@ -364,7 +363,7 @@ _cmalloc (unsigned size)
if (b >= NBUCKETS)
return NULL;
cygheap_protect.acquire ();
AcquireSRWLockExclusive (&cygheap_protect);
if (cygheap->buckets[b])
{
rvc = (_cmalloc_entry *) cygheap->buckets[b];
@ -376,7 +375,7 @@ _cmalloc (unsigned size)
rvc = (_cmalloc_entry *) _csbrk (bucket_val[b] + sizeof (_cmalloc_entry));
if (!rvc)
{
cygheap_protect.release ();
ReleaseSRWLockExclusive (&cygheap_protect);
return NULL;
}
@ -384,19 +383,19 @@ _cmalloc (unsigned size)
rvc->prev = cygheap->chain;
cygheap->chain = rvc;
}
cygheap_protect.release ();
ReleaseSRWLockExclusive (&cygheap_protect);
return rvc->data;
}
static void
_cfree (void *ptr)
{
cygheap_protect.acquire ();
AcquireSRWLockExclusive (&cygheap_protect);
_cmalloc_entry *rvc = to_cmalloc (ptr);
unsigned b = rvc->b;
rvc->ptr = cygheap->buckets[b];
cygheap->buckets[b] = (char *) rvc;
cygheap_protect.release ();
ReleaseSRWLockExclusive (&cygheap_protect);
}
static void *