cfdbccc5c2
This is a redesign of the root and parent interfaces to eliminate blocking RPC calls. - New session representation at the parent (base/session_state.h) - base-internal root proxy mechanism as migration path - Redesign of base/service.h - Removes ancient 'Connection::KEEP_OPEN' feature - Interface change of 'Child', 'Child_policy', 'Slave', 'Slave_policy' - New 'Slave::Connection' - Changed child-construction procedure to be compatible with the non-blocking parent interface and to be easier to use - The child's initial LOG session, its binary ROM session, and the linker ROM session have become part of the child's envirenment. - Session upgrading must now be performed via 'env.upgrade' instead of performing a sole RPC call the parent. To make RAM upgrades easier, the 'Connection' provides a new 'upgrade_ram' method. Issue #2120
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/*
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* \brief Component-local implementation of the parent interface
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* \author Norman Feske
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* \date 2016-04-29
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*
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* On Linux, we intercept the parent interface to implement services that are
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* concerned with virtual-memory management locally within the component.
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*/
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/*
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* Copyright (C) 2016 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__BASE__INTERNAL__LOCAL_PARENT_H_
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#define _INCLUDE__BASE__INTERNAL__LOCAL_PARENT_H_
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/* Genode includes */
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#include <base/allocator.h>
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/* base-internal includes */
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#include <base/internal/expanding_parent_client.h>
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namespace Genode {
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class Local_session;
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class Local_parent;
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}
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/**
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* Local interceptor of parent requests
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*
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* On Linux, we need to intercept calls to the parent interface to implement
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* the RM service locally. This particular service is used for creating managed
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* dataspaces, which allow the reservation of parts of the local address space
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* from being automatically managed by the 'env()->rm_session()'.
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*
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* All requests that do not refer to the RM service are passed through the real
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* parent interface.
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*/
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class Genode::Local_parent : public Expanding_parent_client
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{
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private:
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Allocator &_alloc;
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Id_space<Client> _local_sessions_id_space;
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public:
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/**********************
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** Parent interface **
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**********************/
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Session_capability session(Client::Id, Service_name const &, Session_args const &,
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Affinity const & = Affinity()) override;
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Close_result close(Client::Id) override;
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/**
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* Constructor
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*
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* \param parent_cap real parent capability used to
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* promote requests to non-local
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* services
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*/
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Local_parent(Parent_capability parent_cap,
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Emergency_ram_reserve &,
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Allocator &);
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};
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#endif /* _INCLUDE__BASE__INTERNAL__LOCAL_PARENT_H_ */
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