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60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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Copyright (c) 2007-2014 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_METADATA_HPP_INCLUDED__
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#define __ZMQ_METADATA_HPP_INCLUDED__
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#include <map>
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#include "atomic_counter.hpp"
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#include "i_properties.hpp"
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namespace zmq
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{
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class metadata_t : public i_properties
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{
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public:
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metadata_t (std::map <const std::string, const std::string> &dict);
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virtual ~metadata_t ();
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// Returns pointer to property value or NULL if
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// property is not found.
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virtual const char *get (const std::string &property) const;
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virtual void add_ref ();
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// Drop reference. Returns true iff the reference
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// counter drops to zero.
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virtual bool drop_ref ();
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private:
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// Reference counter.
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atomic_counter_t ref_cnt;
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// Dictionary holding metadata.
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typedef std::map <const std::string, const std::string> dict_t;
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const dict_t dict;
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};
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}
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#endif
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