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#
# 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
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