85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/*
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* \brief Connection to VM a service
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* \author Stefan Kalkowski
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* \date 2012-10-02
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*/
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/*
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* Copyright (C) 2012-2017 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__VM_SESSION__CONNECTION_H_
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#define _INCLUDE__VM_SESSION__CONNECTION_H_
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#include <util/retry.h>
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#include <vm_session/client.h>
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#include <cpu_session/cpu_session.h>
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#include <base/connection.h>
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namespace Genode { struct Vm_connection; }
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struct Genode::Vm_connection : Connection<Vm_session>, Vm_session_client
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{
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/**
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* Issue session request
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*
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* \noapi
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*/
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Capability<Vm_session> _session(Parent &parent, char const *label, long priority,
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unsigned long affinity)
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{
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return session(parent,
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"priority=0x%lx, affinity=0x%lx, ram_quota=16K, cap_quota=10, label=\"%s\"",
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priority, affinity, label);
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}
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/**
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* Constructor
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*
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* \param label initial session label
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* \param priority designated priority of the VM
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* \param affinity which physical CPU the VM should run on top of
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*/
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Vm_connection(Env &env, const char *label = "",
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long priority = Cpu_session::DEFAULT_PRIORITY,
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unsigned long affinity = 0)
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:
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Connection<Vm_session>(env, _session(env.parent(), label, priority, affinity)),
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Vm_session_client(cap())
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{ }
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/**
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* Constructor
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*
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* \noapi
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* \deprecated Use the constructor with 'Env &' as first
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* argument instead
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*/
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Vm_connection(const char *label = "",
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long priority = Cpu_session::DEFAULT_PRIORITY,
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unsigned long affinity = 0) __attribute__((deprecated))
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:
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Connection<Vm_session>(_session(*env_deprecated()->parent(), label, priority, affinity)),
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Vm_session_client(cap())
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{ }
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template <typename FUNC>
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auto with_upgrade(FUNC func) -> decltype(func())
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{
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return Genode::retry<Genode::Out_of_ram>(
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[&] () {
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return Genode::retry<Genode::Out_of_caps>(
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[&] () { return func(); },
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[&] () { this->upgrade_caps(2); });
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},
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[&] () { this->upgrade_ram(4096); }
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);
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}
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};
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#endif /* _INCLUDE__VM_SESSION__CONNECTION_H_ */
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