genode/repos/os/include/spec/x86/platform_session/connection.h

49 lines
1.1 KiB
C++

/*
* \brief Connection to Platform service
* \author Norman Feske
* \date 2008-08-22
*/
/*
* Copyright (C) 2008-2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#pragma once
#include <util/retry.h>
#include <base/connection.h>
#include <platform_session/client.h>
namespace Platform { struct Connection; }
struct Platform::Connection : Genode::Connection<Session>, Client
{
/**
* Constructor
*/
Connection(Genode::Env &env)
:
Genode::Connection<Session>(env, session(env.parent(),
"ram_quota=16K, cap_quota=%u",
CAP_QUOTA)),
Client(cap())
{ }
template <typename FUNC>
auto with_upgrade(FUNC func) -> decltype(func())
{
return Genode::retry<Genode::Out_of_ram>(
[&] () {
return Genode::retry<Genode::Out_of_caps>(
[&] () { return func(); },
[&] () { this->upgrade_caps(2); });
},
[&] () { this->upgrade_ram(4096); }
);
}
};