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69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
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/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq 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 (LGPL) as published
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by 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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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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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 <string>
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#include "atomic_counter.hpp"
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namespace zmq
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{
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class metadata_t
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{
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public:
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typedef std::map<std::string, std::string> dict_t;
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metadata_t (const dict_t &dict_);
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// Returns pointer to property value or NULL if
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// property is not found.
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const char *get (const std::string &property_) const;
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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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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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const dict_t _dict;
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ZMQ_NON_COPYABLE_NOR_MOVABLE (metadata_t)
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};
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}
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#endif
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