97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
/*
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* \brief Signal root interface on HW-core
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* \author Martin Stein
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* \date 2012-05-06
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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 _CORE__INCLUDE__SIGNAL_ROOT_H_
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#define _CORE__INCLUDE__SIGNAL_ROOT_H_
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/* Genode includes */
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#include <root/component.h>
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/* base-hw includes */
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#include <kernel/core_interface.h>
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/* core includes */
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#include <signal_session_component.h>
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namespace Genode
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{
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/**
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* Provide EP to signal root before it initialises root component
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*/
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class Signal_handler
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{
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enum { STACK_SIZE = 4096 };
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Rpc_entrypoint _entrypoint;
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public:
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/**
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* Constructor
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*/
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Signal_handler(Cap_session * const c)
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: _entrypoint(c, STACK_SIZE, "signal") { }
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/***************
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** Accessors **
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***************/
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Rpc_entrypoint * entrypoint() { return &_entrypoint; }
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};
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/**
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* Provides signal service by managing appropriate sessions to the clients
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*/
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class Signal_root : private Signal_handler,
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public Root_component<Signal_session_component>
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{
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public:
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/**
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* Constructor
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*
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* \param md Meta-data allocator to be used by root component
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* \param c CAP session to be used by the root entrypoint
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*/
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Signal_root(Allocator * const md, Cap_session * const c) :
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Signal_handler(c),
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Root_component<Signal_session_component>(entrypoint(), md)
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{ }
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protected:
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/********************************
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** 'Root_component' interface **
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********************************/
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Signal_session_component * _create_session(const char * args)
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{
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size_t ram_quota =
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Arg_string::find_arg(args, "ram_quota").ulong_value(0);
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return new (md_alloc())
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Signal_session_component(md_alloc(), ram_quota);
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}
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void _upgrade_session(Signal_session_component *s,
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const char * args)
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{
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size_t ram_quota =
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Arg_string::find_arg(args, "ram_quota").ulong_value(0);
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s->upgrade_ram_quota(ram_quota);
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}
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};
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}
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#endif /* _CORE__INCLUDE__SIGNAL_ROOT_H_ */
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