diff options
author | Dan Klein <danklei@cisco.com> | 2015-08-24 13:22:48 +0300 |
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committer | Dan Klein <danklei@cisco.com> | 2015-08-24 13:22:48 +0300 |
commit | dab741a80699f86e86c91718872a052cca9bbb25 (patch) | |
tree | 1959c4a2cea440170a5113dcb067796cb20ffb64 /external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.cpp | |
parent | d3f26ece7d4383df0b22fe9c3cb3e695381ec737 (diff) |
Fixed dependencies of Control Plane to use external_lib sources
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.cpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.cpp | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.cpp new file mode 100644 index 00000000..e3c2e8a1 --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mailbox.cpp @@ -0,0 +1,96 @@ +/* + 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/>. +*/ + +#include "mailbox.hpp" +#include "err.hpp" + +zmq::mailbox_t::mailbox_t () +{ + // Get the pipe into passive state. That way, if the users starts by + // polling on the associated file descriptor it will get woken up when + // new command is posted. + const bool ok = cpipe.read (NULL); + zmq_assert (!ok); + active = false; +} + +zmq::mailbox_t::~mailbox_t () +{ + // TODO: Retrieve and deallocate commands inside the cpipe. + + // Work around problem that other threads might still be in our + // send() method, by waiting on the mutex before disappearing. + sync.lock (); + sync.unlock (); +} + +zmq::fd_t zmq::mailbox_t::get_fd () const +{ + return signaler.get_fd (); +} + +void zmq::mailbox_t::send (const command_t &cmd_) +{ + sync.lock (); + cpipe.write (cmd_, false); + const bool ok = cpipe.flush (); + sync.unlock (); + if (!ok) + signaler.send (); +} + +int zmq::mailbox_t::recv (command_t *cmd_, int timeout_) +{ + // Try to get the command straight away. + if (active) { + if (cpipe.read (cmd_)) + return 0; + + // If there are no more commands available, switch into passive state. + active = false; + } + + // Wait for signal from the command sender. + const int rc = signaler.wait (timeout_); + if (rc == -1) { + errno_assert (errno == EAGAIN || errno == EINTR); + return -1; + } + + // Receive the signal. + signaler.recv (); + + // Switch into active state. + active = true; + + // Get a command. + const bool ok = cpipe.read (cmd_); + zmq_assert (ok); + return 0; +} |