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Use simple locks in dlmalloc

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This commit is contained in:
Justine Tunney 2023-11-12 06:44:20 -08:00
parent bcf268adf8
commit bed77186c3
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3 changed files with 3 additions and 14 deletions
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12
third_party/dlmalloc/locks.inc vendored
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@ -30,11 +30,7 @@
*/
#ifdef TINY
#define MLOCK_T atomic_uint
#else
#define MLOCK_T nsync_mu
#endif
static int malloc_wipe(MLOCK_T *lk) {
bzero(lk, sizeof(*lk));
@ -43,23 +39,15 @@ static int malloc_wipe(MLOCK_T *lk) {
static int malloc_lock(MLOCK_T *lk) {
if (!__threaded) return 0;
#ifdef TINY
while (atomic_exchange_explicit(lk, 1, memory_order_acquire)) {
pthread_pause_np();
}
#else
nsync_mu_lock(lk);
#endif
return 0;
}
static int malloc_unlock(MLOCK_T *lk) {
if (!__threaded) return 0;
#ifdef TINY
atomic_store_explicit(lk, 0, memory_order_release);
#else
nsync_mu_unlock(lk);
#endif
return 0;
}