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56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/*
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Copyright (c) 2007-2009 FastMQ Inc.
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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 Lesser GNU 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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Lesser GNU General Public License for more details.
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You should have received a copy of the Lesser GNU 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_I_SIGNALER_HPP_INCLUDED__
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#define __ZMQ_I_SIGNALER_HPP_INCLUDED__
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#include "stdint.hpp"
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#include "fd.hpp"
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namespace zmq
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{
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// Virtual interface used to send signals. Individual implementations
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// may restrict the number of possible signal types to send.
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struct i_signaler
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{
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virtual ~i_signaler () {};
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// Send a signal with a specific ID.
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virtual void signal (int signal_) = 0;
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// Wait for signal. Returns a set of signals in form of a bitmap.
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// Signal with index 0 corresponds to value 1, index 1 to value 2,
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// index 2 to value 3 etc.
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virtual uint64_t poll () = 0;
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// Same as poll, however, if there is no signal available,
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// function returns zero immediately instead of waiting for a signal.
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virtual uint64_t check () = 0;
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// Returns file descriptor that allows waiting for signals. Specific
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// signalers may not support this functionality. If so, the function
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// returns retired_fd.
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virtual fd_t get_fd () = 0;
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};
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}
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#endif
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