59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
/*
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* \brief Connection to RM service
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* \author Norman Feske
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* \date 2008-08-22
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*/
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/*
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* Copyright (C) 2008-2018 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__RM_SESSION__CONNECTION_H_
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#define _INCLUDE__RM_SESSION__CONNECTION_H_
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#include <rm_session/client.h>
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#include <base/connection.h>
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#include <util/retry.h>
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namespace Genode { struct Rm_connection; }
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struct Genode::Rm_connection : Connection<Rm_session>, Rm_session_client
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{
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enum { RAM_QUOTA = 64*1024 };
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/**
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* Constructor
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*/
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Rm_connection(Env &env)
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:
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Connection<Rm_session>(env, session(env.parent(), "ram_quota=%u, cap_quota=%u",
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RAM_QUOTA, CAP_QUOTA)),
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Rm_session_client(cap())
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{ }
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/**
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* Wrapper over 'create' that handles resource requests
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* from the server.
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*/
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Capability<Region_map> create(size_t size) override
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{
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enum { UPGRADE_ATTEMPTS = 16U };
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return Genode::retry<Out_of_ram>(
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[&] () {
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return Genode::retry<Out_of_caps>(
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[&] () { return Rm_session_client::create(size); },
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[&] () { upgrade_caps(2); },
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UPGRADE_ATTEMPTS);
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},
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[&] () { upgrade_ram(8*1024); },
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UPGRADE_ATTEMPTS);
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}
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};
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#endif /* _INCLUDE__RM_SESSION__CONNECTION_H_ */
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