84 lines
1.4 KiB
C++
84 lines
1.4 KiB
C++
/*
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* \brief Io receptor registry
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* \author Josef Soentgen
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* \date 2012-10-05
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*/
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/*
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* Copyright (C) 2012-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _NOUX__IO_RECEPTOR_REGISTRY_H_
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#define _NOUX__IO_RECEPTOR_REGISTRY_H_
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/* Genode includes */
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#include <base/lock.h>
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#include <base/semaphore.h>
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#include <util/list.h>
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namespace Noux {
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struct Io_receptor : List<Io_receptor>::Element
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{
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private:
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Semaphore *_sem;
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public:
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Io_receptor(Semaphore *semaphore)
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:
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_sem(semaphore)
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{ }
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void check_and_wakeup()
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{
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if (_sem)
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_sem->up();
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}
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};
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class Io_receptor_registry
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{
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private:
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List<Io_receptor> _receptors;
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Lock _receptors_lock;
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public:
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Io_receptor_registry() { }
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~Io_receptor_registry()
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{
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Io_receptor *receptor;
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while ((receptor = _receptors.first()) != 0)
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_receptors.remove(receptor);
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}
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void register_receptor(Io_receptor *receptor)
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{
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Lock::Guard guard(_receptors_lock);
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_receptors.insert(receptor);
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}
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void unregister_receptor(Io_receptor *receptor)
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{
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Lock::Guard guard(_receptors_lock);
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_receptors.remove(receptor);
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}
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Io_receptor *first() { return _receptors.first(); }
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};
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}
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#endif /* _NOUX__IO_RECEPTOR_REGISTRY_H_ */
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