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6d361b337b
This patch fixes an aliasing problem of the 'close' method signature that prevented the Input::Root_component::close method to be called. This way, the event-queue state was not reset at session-close time, which prevented a subsequent session-creation request to succeed. With the patch, input servers like ps2_drv, usb_drv that rely on the Input::Root_component support the dynamic re-opening of sessions. This happens in particular when using a dynamically configured input filter.
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/*
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* \brief Root component for singleton services
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* \author Norman Feske
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* \date 2012-10-05
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*/
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/*
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* Copyright (C) 2012-2017 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 _INCLUDE__OS__STATIC_ROOT_H_
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#define _INCLUDE__OS__STATIC_ROOT_H_
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/* Genode includes */
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#include <base/rpc_server.h>
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#include <session/session.h>
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#include <root/root.h>
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namespace Genode { template <typename> class Static_root; }
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/**
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* Root interface that hands out a statically created session
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*
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* Many components, in particular device drivers, support only one client
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* at a time. In this case, one single session may be created right at the
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* start of the program and handed out via the 'Root::session' method.
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*/
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template <typename SESSION>
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class Genode::Static_root : public Genode::Rpc_object<Genode::Typed_root<SESSION> >
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{
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private:
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Capability<SESSION> _session;
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public:
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/**
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* Constructor
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*
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* \param session session to be provided to the client
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*/
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Static_root(Capability<SESSION> session) : _session(session) { }
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/********************
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** Root interface **
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********************/
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Capability<Session> session(Root::Session_args const &args, Affinity const &) override
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{
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return _session;
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}
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void upgrade(Capability<Session>, Root::Upgrade_args const &) override { }
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void close(Capability<Session>) override { }
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};
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#endif /* _INCLUDE__OS__STATIC_ROOT_H_ */
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