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05d908492d
Sockets may now be migrated between OS threads; sockets may not be used by more than one thread at any time. To migrate a socket to another thread the caller must ensure that a full memory barrier is called before using the socket from the target thread. The new zmq_close() semantics implement the behaviour discussed at: http://lists.zeromq.org/pipermail/zeromq-dev/2010-July/004244.html Specifically, zmq_close() is now deterministic and while it still returns immediately, it does not discard any data that may still be queued for sending. Further, zmq_term() will now block until all outstanding data has been sent. TODO: Many bugs have been introduced, needs testing. Further, SO_LINGER or an equivalent mechanism (possibly a configurable timeout to zmq_term()) needs to be implemented.
71 lines
1.9 KiB
C++
71 lines
1.9 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 Lesser GNU 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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Lesser GNU General Public License for more details.
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You should have received a copy of the Lesser GNU 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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#ifndef __ZMQ_LB_HPP_INCLUDED__
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#define __ZMQ_LB_HPP_INCLUDED__
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#include "yarray.hpp"
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#include "pipe.hpp"
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namespace zmq
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{
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// Class manages a set of outbound pipes. On send it load balances
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// messages fairly among the pipes.
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class lb_t : public i_writer_events
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{
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public:
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lb_t ();
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~lb_t ();
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void attach (writer_t *pipe_);
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void term_pipes ();
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bool has_pipes ();
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int send (zmq_msg_t *msg_, int flags_);
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bool has_out ();
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// i_writer_events interface implementation.
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void activated (writer_t *pipe_);
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void terminated (writer_t *pipe_);
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private:
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// List of outbound pipes.
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typedef yarray_t <class writer_t> pipes_t;
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pipes_t pipes;
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// Number of active pipes. All the active pipes are located at the
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// beginning of the pipes array.
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pipes_t::size_type active;
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// Points to the last pipe that the most recent message was sent to.
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pipes_t::size_type current;
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// True if last we are in the middle of a multipart message.
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bool more;
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lb_t (const lb_t&);
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void operator = (const lb_t&);
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};
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}
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#endif
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