From 913489deb2ee9dbf44455de5f407ddaf4bd8c540 Mon Sep 17 00:00:00 2001
From: "Rafael H. Schloming" <rhs@apache.org>
Date: Tue, 19 Sep 2006 22:06:50 +0000
Subject: Import of qpid from etp:

  URL: https://etp.108.redhat.com/svn/etp/trunk/blaze
  Repository Root: https://etp.108.redhat.com/svn/etp
  Repository UUID: 06e15bec-b515-0410-bef0-cc27a458cf48
  Revision: 608



git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@447994 13f79535-47bb-0310-9956-ffa450edef68
---
 ruby/queue.rb | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 ruby/queue.rb

(limited to 'ruby/queue.rb')

diff --git a/ruby/queue.rb b/ruby/queue.rb
new file mode 100644
index 0000000000..037ecd25b7
--- /dev/null
+++ b/ruby/queue.rb
@@ -0,0 +1,49 @@
+#
+# Copyright (c) 2006 The Apache Software Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require "thread"
+
+module Qpid
+
+  class Closed < Exception; end
+
+  class Queue < Queue
+
+    @@END = Object.new()
+
+    def close()
+      # sentinal to indicate the end of the queue
+      self << @@END
+    end
+
+    def pop(*args)
+      result = super(*args)
+      if @@END.equal? result
+        # we put another sentinal on the end in case there are
+        # subsequent calls to pop by this or other threads
+        self << @@END
+        raise Closed.new()
+      else
+        return result
+      end
+    end
+
+    alias shift pop
+    alias deq pop
+
+  end
+
+end
-- 
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