mirror of
https://github.com/zeromq/libzmq.git
synced 2025-03-12 09:06:26 +00:00
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
|
/*
|
||
|
|
Copyright (c) 2007-2011 iMatix Corporation
|
||
|
|
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
|
||
|
|
|
||
|
|
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_SIGNALER_HPP_INCLUDED__
|
||
|
|
#define __ZMQ_SIGNALER_HPP_INCLUDED__
|
||
|
|
|
||
|
|
#include "fd.hpp"
|
||
|
|
|
||
|
|
namespace zmq
|
||
|
|
{
|
||
|
|
|
||
|
|
// This is a cross-platform equivalent to signal_fd. However, as opposed
|
||
|
|
// to signal_fd there can be at most one signal in the signaler at any
|
||
|
|
// given moment. Attempt to send a signal before receiving the previous
|
||
|
|
// one will result in undefined behaviour.
|
||
|
|
|
||
|
|
class signaler_t
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
signaler_t ();
|
||
|
|
~signaler_t ();
|
||
|
|
|
||
|
|
fd_t get_fd ();
|
||
|
|
void send ();
|
||
|
|
int wait (int timeout_);
|
||
|
|
void recv ();
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
// Creates a pair of filedescriptors that will be used
|
||
|
|
// to pass the signals.
|
||
|
|
static int make_fdpair (fd_t *r_, fd_t *w_);
|
||
|
|
|
||
|
|
// Write & read end of the socketpair.
|
||
|
|
fd_t w;
|
||
|
|
fd_t r;
|
||
|
|
|
||
|
|
// Disable copying of signaler_t object.
|
||
|
|
signaler_t (const signaler_t&);
|
||
|
|
const signaler_t &operator = (const signaler_t&);
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|