From 37128b7b1aeed9ad2bf6816560b85b5f94dd5bec Mon Sep 17 00:00:00 2001 From: Martin Sustrik Date: Thu, 29 Apr 2010 17:31:57 +0200 Subject: fd_signaler_t renamed to signaler_t --- src/signaler.hpp | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 src/signaler.hpp (limited to 'src/signaler.hpp') diff --git a/src/signaler.hpp b/src/signaler.hpp new file mode 100644 index 0000000..29f2ff6 --- /dev/null +++ b/src/signaler.hpp @@ -0,0 +1,80 @@ +/* + 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 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 . +*/ + +#ifndef __ZMQ_SIGNALER_HPP_INCLUDED__ +#define __ZMQ_SIGNALER_HPP_INCLUDED__ + +#include "platform.hpp" +#include "fd.hpp" +#include "stdint.hpp" + +namespace zmq +{ + + // This object can be used to send individual signals from one thread to + // another. The specific of this pipe is that it has associated file + // descriptor and so it can be polled on. Same signal cannot be sent twice + // unless signals are retrieved by the reader side in the meantime. + + class signaler_t + { + public: + + signaler_t (); + ~signaler_t (); + + // i_signaler interface implementation. + void signal (int signal_); + uint64_t poll (); + uint64_t check (); + fd_t get_fd (); + + private: + +#if defined ZMQ_HAVE_OPENVMS + + // Whilst OpenVMS supports socketpair - it maps to AF_INET only. + // Further, it does not set the socket options TCP_NODELAY and + // TCP_NODELACK which can lead to performance problems. We'll + // overload the socketpair function for this class. + // + // The bug will be fixed in V5.6 ECO4 and beyond. In the + // meantime, we'll create the socket pair manually. + static int socketpair (int domain_, int type_, int protocol_, + int sv_ [2]); + +#endif + +#if defined ZMQ_HAVE_EVENTFD + // Eventfd descriptor. + fd_t fd; +#else + // Write & read end of the socketpair. + fd_t w; + fd_t r; +#endif + + // Disable copying of fd_signeler object. + signaler_t (const signaler_t&); + void operator = (const signaler_t&); + }; + +} + +#endif -- cgit v1.2.3