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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.
78 lines
2.1 KiB
C++
78 lines
2.1 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_THREAD_HPP_INCLUDED__
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#define __ZMQ_THREAD_HPP_INCLUDED__
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#include "platform.hpp"
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#ifdef ZMQ_HAVE_WINDOWS
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#include "windows.hpp"
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#else
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#include <pthread.h>
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#endif
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namespace zmq
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{
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typedef void (thread_fn) (void*);
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// Class encapsulating OS thread. Thread initiation/termination is done
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// using special functions rather than in constructor/destructor so that
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// thread isn't created during object construction by accident, causing
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// newly created thread to access half-initialised object. Same applies
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// to the destruction process: Thread should be terminated before object
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// destruction begins, otherwise it can access half-destructed object.
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class thread_t
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{
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public:
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inline thread_t ()
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{
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}
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// Creates OS thread. 'tfn' is main thread function. It'll be passed
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// 'arg' as an argument.
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void start (thread_fn *tfn_, void *arg_);
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// Waits for thread termination.
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void stop ();
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private:
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#ifdef ZMQ_HAVE_WINDOWS
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static unsigned int __stdcall thread_routine (void *arg_);
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HANDLE descriptor;
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#else
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static void *thread_routine (void *arg_);
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pthread_t descriptor;
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#endif
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thread_fn *tfn;
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void *arg;
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thread_t (const thread_t&);
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void operator = (const thread_t&);
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};
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}
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#endif
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