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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/rep.cpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/rep.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/rep.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/rep.cpp new file mode 100644 index 00000000..0efdec9c --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/rep.cpp @@ -0,0 +1,133 @@ +/* + 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 "rep.hpp" +#include "err.hpp" +#include "msg.hpp" + +zmq::rep_t::rep_t (class ctx_t *parent_, uint32_t tid_, int sid_) : + router_t (parent_, tid_, sid_), + sending_reply (false), + request_begins (true) +{ + options.type = ZMQ_REP; +} + +zmq::rep_t::~rep_t () +{ +} + +int zmq::rep_t::xsend (msg_t *msg_) +{ + // If we are in the middle of receiving a request, we cannot send reply. + if (!sending_reply) { + errno = EFSM; + return -1; + } + + bool more = msg_->flags () & msg_t::more ? true : false; + + // Push message to the reply pipe. + int rc = router_t::xsend (msg_); + if (rc != 0) + return rc; + + // If the reply is complete flip the FSM back to request receiving state. + if (!more) + sending_reply = false; + + return 0; +} + +int zmq::rep_t::xrecv (msg_t *msg_) +{ + // If we are in middle of sending a reply, we cannot receive next request. + if (sending_reply) { + errno = EFSM; + return -1; + } + + // First thing to do when receiving a request is to copy all the labels + // to the reply pipe. + if (request_begins) { + while (true) { + int rc = router_t::xrecv (msg_); + if (rc != 0) + return rc; + + if ((msg_->flags () & msg_t::more)) { + // Empty message part delimits the traceback stack. + bool bottom = (msg_->size () == 0); + + // Push it to the reply pipe. + rc = router_t::xsend (msg_); + errno_assert (rc == 0); + + if (bottom) + break; + } + else { + // If the traceback stack is malformed, discard anything + // already sent to pipe (we're at end of invalid message). + rc = router_t::rollback (); + errno_assert (rc == 0); + } + } + request_begins = false; + } + + // Get next message part to return to the user. + int rc = router_t::xrecv (msg_); + if (rc != 0) + return rc; + + // If whole request is read, flip the FSM to reply-sending state. + if (!(msg_->flags () & msg_t::more)) { + sending_reply = true; + request_begins = true; + } + + return 0; +} + +bool zmq::rep_t::xhas_in () +{ + if (sending_reply) + return false; + + return router_t::xhas_in (); +} + +bool zmq::rep_t::xhas_out () +{ + if (!sending_reply) + return false; + + return router_t::xhas_out (); +} |