From: Jonathan Chambers <joncham@gmail.com>
Date: Tue, 24 Jul 2018 20:46:52 +0000 (-0400)
Subject: Perform thread_suspend in loop as it may be interrupted (Darwin)
X-Git-Tag: v8.0.0~61
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e8cdc7c2dbc0edeb185bf7438f1982c6bc74a82e;p=gc

Perform thread_suspend in loop as it may be interrupted (Darwin)

* darwin_stop_world.c (GC_stop_world): Retry thread_suspend() on
KERN_ABORTED.
---

diff --git a/darwin_stop_world.c b/darwin_stop_world.c
index fd04fcd2..fe04a088 100644
--- a/darwin_stop_world.c
+++ b/darwin_stop_world.c
@@ -636,7 +636,9 @@ GC_INNER void GC_stop_world(void)
         if ((p->flags & FINISHED) == 0 && !p->thread_blocked &&
              p->stop_info.mach_thread != my_thread) {
 
-          kern_result = thread_suspend(p->stop_info.mach_thread);
+          do {
+            kern_result = thread_suspend(p->stop_info.mach_thread);
+          } while (kern_result == KERN_ABORTED);
           if (kern_result != KERN_SUCCESS)
             ABORT("thread_suspend failed");
           if (GC_on_thread_event)