gistfile1.diff

diff --git a/thread_pthread.c b/thread_pthread.c
index 8ef34dd..26a0135 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -267,10 +267,23 @@ native_cond_destroy(rb_thread_cond_t *cond)
     }
 }
 
+/*
+ * In OS X 10.7 (Lion), pthread_cond_signal and pthread_cond_broadcast return
+ * EAGAIN after retrying 8196 times.  You can see them in the following page:
+ *
+ * http://www.opensource.apple.com/source/Libc/Libc-763.11/pthreads/pthread_cond.c
+ *
+ * The following native_cond_signal and native_cond_broadcast functions
+ * need to retrying until pthread functions don't return EAGAIN.
+ */
+
 static void
 native_cond_signal(rb_thread_cond_t *cond)
 {
-    int r = pthread_cond_signal(&cond->cond);
+    int r;
+    do {
+	r = pthread_cond_signal(&cond->cond);
+    } while (r == EAGAIN);
     if (r != 0) {
 	rb_bug_errno("pthread_cond_signal", r);
     }
@@ -279,7 +292,10 @@ native_cond_signal(rb_thread_cond_t *cond)
 static void
 native_cond_broadcast(rb_thread_cond_t *cond)
 {
-    int r = pthread_cond_broadcast(&cond->cond);
+    int r;
+    do {
+	r = pthread_cond_broadcast(&cond->cond)
+    } while (r == EAGAIN);
     if (r != 0) {
 	rb_bug_errno("native_cond_broadcast", r);
     }
@@ -736,7 +752,10 @@ use_cached_thread(rb_thread_t *th)
 	    }
 	}
 	if (result) {
-	    pthread_cond_signal(entry->cond);
+	    int r;
+	    do {
+		r = pthread_cond_signal(entry->cond);
+	    } while (r == EAGAIN);
 	}
 	pthread_mutex_unlock(&thread_cache_lock);
     }