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/*
Copyright (c) 2007-2009 FastMQ Inc.
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the Lesser GNU 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
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_I_SIGNALER_HPP_INCLUDED__
#define __ZMQ_I_SIGNALER_HPP_INCLUDED__
#include "stdint.hpp"
namespace zmq
{
// Virtual interface used to send signals. Individual implementations
// may restrict the number of possible signal types to send.
struct i_signaler
{
virtual ~i_signaler () {};
// Send a signal with a specific ID.
virtual void signal (int signal_) = 0;
// Wait for signal. Returns a set of signals in form of a bitmap.
// Signal with index 0 corresponds to value 1, index 1 to value 2,
// index 2 to value 3 etc.
virtual uint64_t poll () = 0;
// Same as poll, however, if there is no signal available,
// function returns zero immediately instead of waiting for a signal.
virtual uint64_t check () = 0;
};
}
#endif
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