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0e88c146af
Tested on linux32 (ubuntu 10.10) and win32 (windows XP SP3). git-svn-id: svn://ultimatepp.org/upp/trunk@3264 f0d560ea-af0d-0410-9eb7-867de7ffcac7
120 lines
2.9 KiB
C++
120 lines
2.9 KiB
C++
/*
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Copyright (c) 2007-2010 iMatix Corporation
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../include/zmq.h"
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#include "req.hpp"
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#include "err.hpp"
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zmq::req_t::req_t (class ctx_t *parent_, uint32_t tid_) :
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xreq_t (parent_, tid_),
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receiving_reply (false),
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message_begins (true)
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{
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options.type = ZMQ_REQ;
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}
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zmq::req_t::~req_t ()
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{
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}
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int zmq::req_t::xsend (zmq_msg_t *msg_, int flags_)
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{
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// If we've sent a request and we still haven't got the reply,
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// we can't send another request.
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if (receiving_reply) {
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errno = EFSM;
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return -1;
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}
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// First part of the request is empty message part (stack bottom).
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if (message_begins) {
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zmq_msg_t prefix;
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int rc = zmq_msg_init (&prefix);
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zmq_assert (rc == 0);
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prefix.flags = ZMQ_MSG_MORE;
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rc = xreq_t::xsend (&prefix, flags_);
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if (rc != 0)
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return rc;
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message_begins = false;
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}
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bool more = msg_->flags & ZMQ_MSG_MORE;
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int rc = xreq_t::xsend (msg_, flags_);
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if (rc != 0)
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return rc;
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// If the request was fully sent, flip the FSM into reply-receiving state.
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if (!more) {
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receiving_reply = true;
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message_begins = true;
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}
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return 0;
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}
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int zmq::req_t::xrecv (zmq_msg_t *msg_, int flags_)
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{
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// If request wasn't send, we can't wait for reply.
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if (!receiving_reply) {
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errno = EFSM;
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return -1;
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}
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// First part of the reply should be empty message part (stack bottom).
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if (message_begins) {
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int rc = xreq_t::xrecv (msg_, flags_);
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if (rc != 0)
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return rc;
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zmq_assert (msg_->flags & ZMQ_MSG_MORE);
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zmq_assert (zmq_msg_size (msg_) == 0);
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message_begins = false;
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}
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int rc = xreq_t::xrecv (msg_, flags_);
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if (rc != 0)
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return rc;
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// If the reply is fully received, flip the FSM into request-sending state.
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if (!(msg_->flags & ZMQ_MSG_MORE)) {
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receiving_reply = false;
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message_begins = true;
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}
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return 0;
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}
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bool zmq::req_t::xhas_in ()
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{
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if (!receiving_reply)
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return false;
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return xreq_t::xhas_in ();
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}
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bool zmq::req_t::xhas_out ()
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{
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if (receiving_reply)
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return false;
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return xreq_t::xhas_out ();
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}
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