1 files changed, 21 insertions, 11 deletions
diff --git a/locks/unix/thread_cond.c b/locks/unix/thread_cond.c
index db7dd4f0d973..3c8e3170a0dc 100644
--- a/locks/unix/thread_cond.c
+++ b/locks/unix/thread_cond.c
@@ -79,21 +79,31 @@ APR_DECLARE(apr_status_t) apr_thread_cond_timedwait(apr_thread_cond_t *cond,
                                                     apr_interval_time_t timeout)
 {
     apr_status_t rv;
-    apr_time_t then;
-    struct timespec abstime;
+    if (timeout < 0) {
+        rv = pthread_cond_wait(&cond->cond, &mutex->mutex);
+#ifdef HAVE_ZOS_PTHREADS
+        if (rv) {
+            rv = errno;
+        }
+#endif
+    }
+    else {
+        apr_time_t then;
+        struct timespec abstime;
 
-    then = apr_time_now() + timeout;
-    abstime.tv_sec = apr_time_sec(then);
-    abstime.tv_nsec = apr_time_usec(then) * 1000; /* nanoseconds */
+        then = apr_time_now() + timeout;
+        abstime.tv_sec = apr_time_sec(then);
+        abstime.tv_nsec = apr_time_usec(then) * 1000; /* nanoseconds */
 
-    rv = pthread_cond_timedwait(&cond->cond, &mutex->mutex, &abstime);
+        rv = pthread_cond_timedwait(&cond->cond, &mutex->mutex, &abstime);
 #ifdef HAVE_ZOS_PTHREADS
-    if (rv) {
-        rv = errno;
-    }
+        if (rv) {
+            rv = errno;
+        }
 #endif
-    if (ETIMEDOUT == rv) {
-        return APR_TIMEUP;
+        if (ETIMEDOUT == rv) {
+            return APR_TIMEUP;
+        }
     }
     return rv;
 }