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unlock the mutex when non-blocking locking is attempted and the lock is busy.

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This commit is contained in:
David Lawrence 2001-04-17 04:07:38 +00:00
parent e19501436a
commit 8e60ba90e0
1 changed files with 6 additions and 4 deletions
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10
lib/isc/rwlock.c
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@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: rwlock.c,v 1.30 2001/03/08 19:52:13 halley Exp $ */
/* $Id: rwlock.c,v 1.31 2001/04/17 04:07:38 tale Exp $ */
#include <config.h>
@ -154,7 +154,8 @@ doit(isc_rwlock_t *rwl, isc_rwlocktype_t type, isc_boolean_t nonblock) {
rwl->granted++;
done = ISC_TRUE;
} else if (nonblock) {
return (ISC_R_LOCKBUSY);
result = ISC_R_LOCKBUSY;
done = ISC_TRUE;
} else {
skip = ISC_FALSE;
rwl->readers_waiting++;
@ -172,7 +173,8 @@ doit(isc_rwlock_t *rwl, isc_rwlocktype_t type, isc_boolean_t nonblock) {
rwl->granted++;
done = ISC_TRUE;
} else if (nonblock) {
return (ISC_R_LOCKBUSY);
result = ISC_R_LOCKBUSY;
done = ISC_TRUE;
} else {
skip = ISC_FALSE;
rwl->writers_waiting++;
@ -189,7 +191,7 @@ doit(isc_rwlock_t *rwl, isc_rwlocktype_t type, isc_boolean_t nonblock) {
UNLOCK(&rwl->lock);
return (ISC_R_SUCCESS);
return (result);
}
isc_result_t