73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
/*
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* \brief Fiasco.OC-specific implementation of core's CPU service
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* \author Christian Helmuth
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* \author Norman Feske
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* \author Stefan Kalkowski
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* \date 2006-07-17
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*/
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/*
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* Copyright (C) 2006-2017 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 Affero General Public License version 3.
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*/
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#ifndef _CORE__INCLUDE__CPU_SESSION_IRQS_H_
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#define _CORE__INCLUDE__CPU_SESSION_IRQS_H_
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/* Genode includes */
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#include <util/avl_tree.h>
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/* core includes */
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#include <cpu_session_component.h>
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namespace Genode { class Cpu_session_irqs; }
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class Genode::Cpu_session_irqs : public Avl_node<Cpu_session_irqs>
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{
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private:
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/*
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* Noncopyable
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*/
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Cpu_session_irqs(Cpu_session_irqs const &);
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Cpu_session_irqs &operator = (Cpu_session_irqs const &);
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enum { IRQ_MAX = 20 };
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Cpu_session_component* _owner;
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Native_capability _irqs[IRQ_MAX];
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unsigned _cnt;
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public:
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Cpu_session_irqs(Cpu_session_component *owner)
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: _owner(owner), _cnt(0) {}
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bool add(Native_capability irq)
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{
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if (_cnt >= (IRQ_MAX - 1))
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return false;
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_irqs[_cnt++] = irq;
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return true;
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}
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/************************
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** Avl node interface **
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************************/
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bool higher(Cpu_session_irqs *c) { return (c->_owner > _owner); }
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Cpu_session_irqs *find_by_session(Cpu_session_component *o)
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{
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if (o == _owner) return this;
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Cpu_session_irqs *c = Avl_node<Cpu_session_irqs>::child(o > _owner);
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return c ? c->find_by_session(o) : 0;
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}
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};
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#endif /* _CORE__INCLUDE__CPU_SESSION_COMPONENT_H_ */
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