aboutsummaryrefslogtreecommitdiffstats
path: root/locks/unix/thread_mutex.c
diff options
context:
space:
mode:
Diffstat (limited to 'locks/unix/thread_mutex.c')
-rw-r--r--locks/unix/thread_mutex.c200
1 files changed, 198 insertions, 2 deletions
diff --git a/locks/unix/thread_mutex.c b/locks/unix/thread_mutex.c
index 73fd1e146210..f7cae5145781 100644
--- a/locks/unix/thread_mutex.c
+++ b/locks/unix/thread_mutex.c
@@ -77,6 +77,19 @@ APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex,
return rv;
}
+#ifndef HAVE_PTHREAD_MUTEX_TIMEDLOCK
+ if (flags & APR_THREAD_MUTEX_TIMED) {
+ rv = apr_thread_cond_create(&new_mutex->cond, pool);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ pthread_mutex_destroy(&new_mutex->mutex);
+ return rv;
+ }
+ }
+#endif
+
apr_pool_cleanup_register(new_mutex->pool,
new_mutex, thread_mutex_cleanup,
apr_pool_cleanup_null);
@@ -89,13 +102,45 @@ APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex)
{
apr_status_t rv;
+ if (mutex->cond) {
+ apr_status_t rv2;
+
+ rv = pthread_mutex_lock(&mutex->mutex);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ return rv;
+ }
+
+ if (mutex->locked) {
+ mutex->num_waiters++;
+ rv = apr_thread_cond_wait(mutex->cond, mutex);
+ mutex->num_waiters--;
+ }
+ else {
+ mutex->locked = 1;
+ }
+
+ rv2 = pthread_mutex_unlock(&mutex->mutex);
+ if (rv2 && !rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#else
+ rv = rv2;
+#endif
+ }
+
+ return rv;
+ }
+
rv = pthread_mutex_lock(&mutex->mutex);
#ifdef HAVE_ZOS_PTHREADS
if (rv) {
rv = errno;
}
#endif
-
+
return rv;
}
@@ -103,6 +148,36 @@ APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex)
{
apr_status_t rv;
+ if (mutex->cond) {
+ apr_status_t rv2;
+
+ rv = pthread_mutex_lock(&mutex->mutex);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ return rv;
+ }
+
+ if (mutex->locked) {
+ rv = APR_EBUSY;
+ }
+ else {
+ mutex->locked = 1;
+ }
+
+ rv2 = pthread_mutex_unlock(&mutex->mutex);
+ if (rv2) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#else
+ rv = rv2;
+#endif
+ }
+
+ return rv;
+ }
+
rv = pthread_mutex_trylock(&mutex->mutex);
if (rv) {
#ifdef HAVE_ZOS_PTHREADS
@@ -114,10 +189,121 @@ APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex)
return APR_SUCCESS;
}
+APR_DECLARE(apr_status_t) apr_thread_mutex_timedlock(apr_thread_mutex_t *mutex,
+ apr_interval_time_t timeout)
+{
+ apr_status_t rv = APR_ENOTIMPL;
+#if APR_HAS_TIMEDLOCKS
+
+#ifdef HAVE_PTHREAD_MUTEX_TIMEDLOCK
+ if (timeout <= 0) {
+ rv = pthread_mutex_trylock(&mutex->mutex);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ if (rv == EBUSY) {
+ rv = APR_TIMEUP;
+ }
+ }
+ }
+ else {
+ struct timespec abstime;
+
+ timeout += apr_time_now();
+ abstime.tv_sec = apr_time_sec(timeout);
+ abstime.tv_nsec = apr_time_usec(timeout) * 1000; /* nanoseconds */
+
+ rv = pthread_mutex_timedlock(&mutex->mutex, &abstime);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ if (rv == ETIMEDOUT) {
+ rv = APR_TIMEUP;
+ }
+ }
+ }
+
+#else /* HAVE_PTHREAD_MUTEX_TIMEDLOCK */
+
+ if (mutex->cond) {
+ rv = pthread_mutex_lock(&mutex->mutex);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ return rv;
+ }
+
+ if (mutex->locked) {
+ if (timeout <= 0) {
+ rv = APR_TIMEUP;
+ }
+ else {
+ mutex->num_waiters++;
+ do {
+ rv = apr_thread_cond_timedwait(mutex->cond, mutex,
+ timeout);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ break;
+ }
+ } while (mutex->locked);
+ mutex->num_waiters--;
+ }
+ if (rv) {
+ pthread_mutex_unlock(&mutex->mutex);
+ return rv;
+ }
+ }
+
+ mutex->locked = 1;
+
+ rv = pthread_mutex_unlock(&mutex->mutex);
+ if (rv) {
+#ifdef HAVE_ZOS_PTHREADS
+ rv = errno;
+#endif
+ return rv;
+ }
+ }
+
+#endif /* HAVE_PTHREAD_MUTEX_TIMEDLOCK */
+
+#endif /* APR_HAS_TIMEDLOCKS */
+ return rv;
+}
+
APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex)
{
apr_status_t status;
+ if (mutex->cond) {
+ status = pthread_mutex_lock(&mutex->mutex);
+ if (status) {
+#ifdef HAVE_ZOS_PTHREADS
+ status = errno;
+#endif
+ return status;
+ }
+
+ if (!mutex->locked) {
+ status = APR_EINVAL;
+ }
+ else if (mutex->num_waiters) {
+ status = apr_thread_cond_signal(mutex->cond);
+ }
+ if (status) {
+ pthread_mutex_unlock(&mutex->mutex);
+ return status;
+ }
+
+ mutex->locked = 0;
+ }
+
status = pthread_mutex_unlock(&mutex->mutex);
#ifdef HAVE_ZOS_PTHREADS
if (status) {
@@ -130,7 +316,17 @@ APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex)
APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex)
{
- return apr_pool_cleanup_run(mutex->pool, mutex, thread_mutex_cleanup);
+ apr_status_t rv, rv2 = APR_SUCCESS;
+
+ if (mutex->cond) {
+ rv2 = apr_thread_cond_destroy(mutex->cond);
+ }
+ rv = apr_pool_cleanup_run(mutex->pool, mutex, thread_mutex_cleanup);
+ if (rv == APR_SUCCESS) {
+ rv = rv2;
+ }
+
+ return rv;
}
APR_POOL_IMPLEMENT_ACCESSOR(thread_mutex)