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Diffstat (limited to 'Final/ruby/qpid/queue.rb')
-rw-r--r-- | Final/ruby/qpid/queue.rb | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Final/ruby/qpid/queue.rb b/Final/ruby/qpid/queue.rb new file mode 100644 index 0000000000..350310882f --- /dev/null +++ b/Final/ruby/qpid/queue.rb @@ -0,0 +1,52 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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 |