make monitor.so for performance. (#2576)

Recent monitor.rb has performance problem because of interrupt
handlers. 'Monitor#synchronize' is frequently used primitive
so the performance of this method is important.

This patch rewrite 'monitor.rb' with 'monitor.so' (C-extension)
and make it faster. See [Feature #16255] for details.

Monitor class objects are normal object which include MonitorMixin.
This patch introduce a Monitor class which is implemented on C
and MonitorMixin uses Monitor object as re-entrant (recursive)
Mutex. This technique improve performance because we don't need
to care atomicity and we don't need accesses to instance variables
any more on Monitor class.

1 files changed, 8 insertions, 8 deletions

diff --git a/test/monitor/test_monitor.rb b/test/monitor/test_monitor.rb
index 9d07bf75f7..49c34e067e 100644
--- a/test/monitor/test_monitor.rb
+++ b/test/monitor/test_monitor.rb
@@ -273,24 +273,24 @@ class TestMonitor < Test::Unit::TestCase
   end
 
   def test_wait_interruption
-    queue = Queue.new
     cond = @monitor.new_cond
-    @monitor.define_singleton_method(:mon_enter_for_cond) do |*args|
-      queue.deq
-      super(*args)
-    end
+
     th = Thread.start {
       @monitor.synchronize do
         begin
           cond.wait(0.1)
+          @monitor.mon_owned?
         rescue Interrupt
-          @monitor.instance_variable_get(:@mon_owner)
+          @monitor.mon_owned?
         end
       end
     }
     sleep(0.1)
     th.raise(Interrupt)
-    queue.enq(nil)
-    assert_equal th, th.value
+
+    begin
+      assert_equal true, th.value
+    rescue Interrupt
+    end
   end
 end