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/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_MSG_HPP_INCLUDE__
#define __ZMQ_MSG_HPP_INCLUDE__
#include <stddef.h>
#include "../include/zmq.h"
#include "atomic_counter.hpp"
namespace zmq
{
// Shared message buffer. Message data are either allocated in one
// continuous block along with this structure - thus avoiding one
// malloc/free pair or they are stored in used-supplied memory.
// In the latter case, ffn member stores pointer to the function to be
// used to deallocate the data. If the buffer is actually shared (there
// are at least 2 references to it) refcount member contains number of
// references.
struct msg_content_t
{
void *data;
size_t size;
zmq_free_fn *ffn;
void *hint;
zmq::atomic_counter_t refcnt;
};
}
#endif
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