91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
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/*
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THREADWRAPPER.hpp - thin convenience wrapper for starting lumiera threads
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef LUMIERA_THREADWRAPPER_H
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#define LUMIERA_THREADWRAPPER_H
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#include "backend/threads.h"
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#include "include/nobugcfg.h"
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#include <tr1/functional>
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#include <boost/noncopyable.hpp>
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namespace lumiera {
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using std::tr1::bind;
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using std::tr1::function;
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using std::tr1::placeholders::_1;
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/**
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* A thin convenience wrapper for dealing with threads,
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* as implemented by the backend (on top of pthread).
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* Using this wrapper...
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* - helps with passing data to the function executed in the new thread
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* - allows to bind to various kinds of functions
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* - supports integrating with an existing object monitor based lock (planned)
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*
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* @note this class is \em not a thread handle. Within Lumiera, we do all of
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* our thread management such as to avoid using global thread handles.
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* If some cooperation between threads is needed, this should be done
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* in a implementation private way, e.g. by sharing a condition var.
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*
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* @todo Ichthyo started this wrapper 12/08 while our own thread handling
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* was just being shaped. It may well be possible that such a wrapper
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* is superfluous in the final application. Re-evaluate this!
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*/
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class Thread : boost::noncopyable
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{
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typedef function<void(void)> Operation;
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static void
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run (void* arg)
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{
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ASSERT (arg);
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Operation doIt_ = *reinterpret_cast<Operation*>(arg);
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doIt_();
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}
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public:
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Thread (Literal& purpose, Operation operation, struct nobug_flag *logging_flag = &NOBUG_FLAG(operate))
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{
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lumiera_thread_run ( LUMIERA_THREAD_INTERACTIVE
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, &run // invoking the run helper and..
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, &operation // passing the actual operation as parameter
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, 0 // no condition variable provided (for now...)
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, purpose.c_str()
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, logging_flag
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);
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}
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};
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} // namespace lumiera
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#endif
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