/
connection.h
51 lines (42 loc) · 1.18 KB
/
connection.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/*
* \brief Connection to RM service
* \author Norman Feske
* \date 2008-08-22
*/
/*
* Copyright (C) 2008-2023 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.
*/
#ifndef _INCLUDE__RM_SESSION__CONNECTION_H_
#define _INCLUDE__RM_SESSION__CONNECTION_H_
#include <rm_session/client.h>
#include <base/connection.h>
#include <util/retry.h>
namespace Genode { struct Rm_connection; }
struct Genode::Rm_connection : Connection<Rm_session>, Rm_session_client
{
Rm_connection(Env &env)
:
Connection<Rm_session>(env, Label(), Ram_quota { 64*1024 }, Args()),
Rm_session_client(cap())
{ }
/**
* Wrapper over 'create' that handles resource requests from the server
*/
Capability<Region_map> create(size_t size) override
{
enum { UPGRADE_ATTEMPTS = 16U };
return Genode::retry<Out_of_ram>(
[&] () {
return Genode::retry<Out_of_caps>(
[&] () { return Rm_session_client::create(size); },
[&] () { upgrade_caps(2); },
UPGRADE_ATTEMPTS);
},
[&] () { upgrade_ram(8*1024); },
UPGRADE_ATTEMPTS);
}
};
#endif /* _INCLUDE__RM_SESSION__CONNECTION_H_ */