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Cleanup inline locking code

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Justine Tunney 2023-11-29 00:36:22 -08:00
parent 96185e1ac0
commit 4427581a05
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GPG key ID: BE714B4575D6E328
12 changed files with 48 additions and 74 deletions
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13
libc/intrin/pthread_spin_trylock.c
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@ -16,7 +16,6 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/thread/thread.h"
@ -30,10 +29,10 @@
* @return 0 on success, or errno on error
* @raise EBUSY if lock is already held
*/
errno_t(pthread_spin_trylock)(pthread_spinlock_t *spin) {
int x;
x = atomic_exchange_explicit(&spin->_lock, 1, memory_order_acquire);
if (!x) return 0;
unassert(x == 1);
return EBUSY;
errno_t pthread_spin_trylock(pthread_spinlock_t *spin) {
if (!atomic_exchange_explicit(&spin->_lock, 1, memory_order_acquire)) {
return 0;
} else {
return EBUSY;
}
}