From deed21bb08170431891b65fda26f4a3557c9ffd4 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Wed, 11 Nov 2020 01:55:28 +0900
Subject: [PATCH] ignore yield_atexit if outgoing port is closed

If outgoing_port is closed, Ractor.yield never successes.
[Bug #17310]
---
 bootstraptest/test_ractor.rb | 10 ++++++++++
 ractor.c                     |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/bootstraptest/test_ractor.rb b/bootstraptest/test_ractor.rb
index 86a033cba8..0720c01caa 100644
--- a/bootstraptest/test_ractor.rb
+++ b/bootstraptest/test_ractor.rb
@@ -309,6 +309,16 @@ assert_equal 'ok', %q{
   end
 }
 
+# a ractor with closed outgoing port should terminate
+assert_equal 'ok', %q{
+  Ractor.new do
+    close_outgoing
+  end
+
+  true until Ractor.count == 1
+  :ok
+}
+
 # multiple Ractors can receive (wait) from one Ractor
 assert_equal '[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]', %q{
   pipe = Ractor.new do
diff --git a/ractor.c b/ractor.c
index 350e9c7b3f..1e32c1b95e 100644
--- a/ractor.c
+++ b/ractor.c
@@ -1288,6 +1288,10 @@ ractor_create(rb_execution_context_t *ec, VALUE self, VALUE loc, VALUE name, VAL
 static void
 ractor_yield_atexit(rb_execution_context_t *ec, rb_ractor_t *cr, VALUE v, bool exc)
 {
+    if (cr->outgoing_port_closed) {
+        return;
+    }
+
     ASSERT_ractor_unlocking(cr);
 
     struct rb_ractor_basket basket;