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
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
/*
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* \brief Region-map client that upgrades PD-session quota on demand
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* \author Norman Feske
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* \date 2013-09-25
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*/
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/*
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* Copyright (C) 2006-2013 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__BASE__INTERNAL__EXPANDING_REGION_MAP_CLIENT_H_
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#define _INCLUDE__BASE__INTERNAL__EXPANDING_REGION_MAP_CLIENT_H_
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/* Genode includes */
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#include <util/retry.h>
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#include <region_map/client.h>
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#include <pd_session/client.h>
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/* base-internal includes */
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#include <base/internal/upgradeable_client.h>
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namespace Genode { class Expanding_region_map_client; }
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struct Genode::Expanding_region_map_client : Region_map_client
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{
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Upgradeable_client<Genode::Pd_session_client> _pd_client;
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Expanding_region_map_client(Pd_session_capability pd, Capability<Region_map> rm,
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Parent::Client::Id pd_id)
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: Region_map_client(rm), _pd_client(pd, pd_id) { }
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Local_addr attach(Dataspace_capability ds, size_t size, off_t offset,
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bool use_local_addr, Local_addr local_addr,
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bool executable) override
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{
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return retry<Region_map::Out_of_metadata>(
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[&] () {
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return Region_map_client::attach(ds, size, offset,
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use_local_addr,
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local_addr,
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executable); },
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[&] () { _pd_client.upgrade_ram(8*1024); });
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}
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};
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#endif /* _INCLUDE__BASE__INTERNAL__EXPANDING_REGION_MAP_CLIENT_H__ */
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