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#
# 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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