81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
/*
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* \brief Terminal root
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* \author Christian Prochaska
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* \date 2012-05-16
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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 _TERMINAL_ROOT_H_
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#define _TERMINAL_ROOT_H_
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/* Genode includes */
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#include <cap_session/cap_session.h>
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#include <root/component.h>
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/* local includes */
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#include "terminal_session_component.h"
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namespace Terminal {
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using namespace Genode;
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class Root : public Rpc_object<Typed_root<Session> >
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{
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private:
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Session_component _session_component1, _session_component2;
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enum Session_state {
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FIRST_SESSION_OPEN = 1 << 0,
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SECOND_SESSION_OPEN = 1 << 1
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};
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int _session_state;
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public:
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Session_capability session(Root::Session_args const &args,
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Genode::Affinity const &)
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{
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if (!(_session_state & FIRST_SESSION_OPEN)) {
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_session_state |= FIRST_SESSION_OPEN;
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return _session_component1.cap();
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} else if (!(_session_state & SECOND_SESSION_OPEN)) {
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_session_state |= SECOND_SESSION_OPEN;
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return _session_component2.cap();
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}
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return Session_capability();
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}
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void upgrade(Genode::Session_capability, Root::Upgrade_args const &) { }
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void close(Genode::Session_capability session)
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{
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if (_session_component1.belongs_to(session))
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_session_state &= ~FIRST_SESSION_OPEN;
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else
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_session_state &= ~SECOND_SESSION_OPEN;
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}
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/**
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* Constructor
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*/
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Root(Rpc_entrypoint *ep, Allocator *md_alloc,
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Cap_session &cap_session)
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: _session_component1(_session_component2, cap_session, "terminal_ep1"),
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_session_component2(_session_component1, cap_session, "terminal_ep2"),
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_session_state(0)
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{ }
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};
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}
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#endif /* _TERMINAL_ROOT_H_ */
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