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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/*
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* \brief Signal session interface
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* \author Martin Stein
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* \date 2012-05-05
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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 _INCLUDE__SIGNAL_SESSION__SIGNAL_SESSION_H_
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#define _INCLUDE__SIGNAL_SESSION__SIGNAL_SESSION_H_
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/* Genode includes */
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#include <base/capability.h>
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#include <base/exception.h>
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#include <session/session.h>
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namespace Genode
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{
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class Signal_receiver;
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class Signal_context;
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/*
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* The 'dst' of this cap is used to communicate the ID of the
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* corresponding signal-receiver kernel-object or 0 if the cap is invalid.
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*/
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typedef Capability<Signal_receiver> Signal_receiver_capability;
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/*
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* The 'dst' of this cap is used to communicate the ID of the
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* corresponding signal-context kernel-object or 0 if the cap is invalid.
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*/
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typedef Capability<Signal_context> Signal_context_capability;
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/**
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* Signal session interface
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*/
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struct Signal_session : Session
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{
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class Out_of_metadata : public Exception { };
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/**
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* String that can be used to refer to this service
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*/
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static const char * service_name() { return "SIGNAL"; }
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/**
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* Destructor
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*/
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virtual ~Signal_session() { }
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/**
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* Create a new signal-receiver kernel-object
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*
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* \return a cap that acts as reference to the created object
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*
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* \throw Out_of_metadata
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*/
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virtual Signal_receiver_capability alloc_receiver() = 0;
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/**
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* Create a new signal-context kernel-object
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*
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* \param r names the signal receiver that shall provide
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* the new context
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* \param imprint every signal that occures on the new context gets
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* signed with this value
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*
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* \return a cap that acts as reference to the created object
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*
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* \throw Out_of_metadata
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*/
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virtual Signal_context_capability
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alloc_context(Signal_receiver_capability const r,
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unsigned const imprint) = 0;
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/**
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* Free signal-context
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*
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* \param cap capability of signal-context to release
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*/
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virtual void free_context(Signal_context_capability cap) = 0;
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/*********************
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** RPC declaration **
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*********************/
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GENODE_RPC_THROW(Rpc_alloc_receiver, Signal_receiver_capability,
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alloc_receiver, GENODE_TYPE_LIST(Out_of_metadata));
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GENODE_RPC_THROW(Rpc_alloc_context, Signal_context_capability,
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alloc_context, GENODE_TYPE_LIST(Out_of_metadata),
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Signal_receiver_capability, unsigned);
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GENODE_RPC(Rpc_free_context, void, free_context,
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Signal_context_capability);
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GENODE_RPC_INTERFACE(Rpc_alloc_receiver, Rpc_alloc_context,
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Rpc_free_context);
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};
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}
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#endif /* _INCLUDE__SIGNAL_SESSION__SIGNAL_SESSION_H_ */
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