gistfile1.diff

diff --git a/thread_pthread.c b/thread_pthread.c
index d3c2609..0ac4f42 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -103,10 +103,23 @@ native_cond_destroy(pthread_cond_t *cond)
     }
 }
 
+/*
+ * In OS X 10.7 (Lion), pthread_cond_signal and pthread_cond_broadcast return
+ * EAGAIN after retrying 8192 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(pthread_cond_t *cond)
 {
-    int r = pthread_cond_signal(cond);
+    int r;
+    do {
+	r = pthread_cond_signal(cond);
+    } while (r == EAGAIN);
     if (r != 0) {
 	rb_bug_errno("pthread_cond_signal", r);
     }
@@ -115,7 +128,10 @@ native_cond_signal(pthread_cond_t *cond)
 static void
 native_cond_broadcast(pthread_cond_t *cond)
 {
-    int r = pthread_cond_broadcast(cond);
+    int r;
+    do {
+	r = pthread_cond_broadcast(cond);
+    } while (r == EAGAIN);
     if (r != 0) {
 	rb_bug_errno("native_cond_broadcast", r);
     }
@@ -490,7 +506,7 @@ use_cached_thread(rb_thread_t *th)
 	    }
 	}
 	if (result) {
-	    pthread_cond_signal(entry->cond);
+	    native_cond_signal(entry->cond);
 	}
 	pthread_mutex_unlock(&thread_cache_lock);
     }
@@ -603,7 +619,7 @@ ubf_pthread_cond_signal(void *ptr)
 {
     rb_thread_t *th = (rb_thread_t *)ptr;
     thread_debug("ubf_pthread_cond_signal (%p)\n", (void *)th);
-    pthread_cond_signal(&th->native_thread_data.sleep_cond);
+    native_cond_signal(&th->native_thread_data.sleep_cond);
 }
 
 #if !defined(__CYGWIN__) && !defined(__SYMBIAN32__)

8192, not 8196 in the initial comment block :)

oh, thx!