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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.hpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.hpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.hpp new file mode 100644 index 00000000..7d3aed4c --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.hpp @@ -0,0 +1,90 @@ +/* + Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file + + This file is part of libzmq, the ZeroMQ core engine in C++. + + libzmq is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License (LGPL) as published + by the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + As a special exception, the Contributors give you permission to link + this library with independent modules to produce an executable, + regardless of the license terms of these independent modules, and to + copy and distribute the resulting executable under terms of your choice, + provided that you also meet, for each linked independent module, the + terms and conditions of the license of that module. An independent + module is a module which is not derived from or based on this library. + If you modify this library, you must extend this exception to your + version of the library. + + libzmq 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_MAILBOX_HPP_INCLUDED__ +#define __ZMQ_MAILBOX_HPP_INCLUDED__ + +#include <stddef.h> + +#include "platform.hpp" +#include "signaler.hpp" +#include "fd.hpp" +#include "config.hpp" +#include "command.hpp" +#include "ypipe.hpp" +#include "mutex.hpp" + +namespace zmq +{ + + class mailbox_t + { + public: + + mailbox_t (); + ~mailbox_t (); + + fd_t get_fd () const; + void send (const command_t &cmd_); + int recv (command_t *cmd_, int timeout_); + +#ifdef HAVE_FORK + // close the file descriptors in the signaller. This is used in a forked + // child process to close the file descriptors so that they do not interfere + // with the context in the parent process. + void forked () { signaler.forked (); } +#endif + + private: + + // The pipe to store actual commands. + typedef ypipe_t <command_t, command_pipe_granularity> cpipe_t; + cpipe_t cpipe; + + // Signaler to pass signals from writer thread to reader thread. + signaler_t signaler; + + // There's only one thread receiving from the mailbox, but there + // is arbitrary number of threads sending. Given that ypipe requires + // synchronised access on both of its endpoints, we have to synchronise + // the sending side. + mutex_t sync; + + // True if the underlying pipe is active, ie. when we are allowed to + // read commands from it. + bool active; + + // Disable copying of mailbox_t object. + mailbox_t (const mailbox_t&); + const mailbox_t &operator = (const mailbox_t&); + }; + +} + +#endif |