* thread.c (rb_thread_io_blocking_region): new function to run

  blocking region with GIL released, for fd.
* thread.c (rb_thread_fd_close): implement.  [ruby-core:35203]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30852 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/test/socket/test_socket.rb b/test/socket/test_socket.rb
index 01d4652abb..b3b6fee5ef 100644
--- a/test/socket/test_socket.rb
+++ b/test/socket/test_socket.rb
@@ -410,4 +410,24 @@ class TestSocket < Test::Unit::TestCase
     assert_equal(stamp.data[-8,8].unpack("Q")[0], t.subsec * 2**64)
   end
 
+  def test_closed_read
+    require 'timeout'
+    require 'socket'
+    bug4390 = '[ruby-core:35203]'
+    server = TCPServer.new("localhost", 0)
+    serv_thread = Thread.new {server.accept}
+    begin sleep(0.1) end until serv_thread.stop?
+    sock = TCPSocket.new("localhost", server.addr[1])
+    client_thread = Thread.new do
+      sock.readline
+    end
+    begin sleep(0.1) end until client_thread.stop?
+    Timeout.timeout(1) do
+      sock.close
+      sock = nil
+      assert_raise(IOError, bug4390) {client_thread.join}
+    end
+  ensure
+    server.close
+  end
 end if defined?(Socket)