https://git.ruby-lang.org/ruby.git/commit/?id=7aaf6676c4

From 7aaf6676c416e773b0b3053de2e250a73c2b2e77 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@a...>
Date: Wed, 25 Nov 2020 16:14:01 +0900
Subject: should stop other ractors on transient_heap_evacuate

transient_heap_evacuate() evacuates all living objects from theap
to malloc mangaed memory. This evacuation can run in any ractors
in parallel with other ractor's execution and it is danger.

To stop such danger parallel execution, use rb_vm_barrier() to
stop all other ractors.

diff --git a/transient_heap.c b/transient_heap.c
index 501876d..357e4a4 100644
--- a/transient_heap.c
+++ b/transient_heap.c
@@ -776,6 +776,7 @@ static void https://github.com/ruby/ruby/blob/trunk/transient_heap.c#L776
 transient_heap_evacuate(void *dmy)
 {
     RB_VM_LOCK_ENTER();
+    rb_vm_barrier();
     {
         struct transient_heap* theap = transient_heap_get();
 
-- 
cgit v0.10.2


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/