56 lines
1.7 KiB
C++
56 lines
1.7 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) 2006-2017 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__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, bool writeable) override
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{
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return retry<Out_of_ram>(
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[&] () {
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return retry<Out_of_caps>(
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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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writeable); },
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[&] { _pd_client.upgrade_caps(2); });
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},
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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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