mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-29 10:08:53 +00:00
100 lines
2.3 KiB
C++
100 lines
2.3 KiB
C++
/*
|
|
* \brief Root interface
|
|
* \author Norman Feske
|
|
* \date 2006-05-11
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__ROOT__ROOT_H_
|
|
#define _INCLUDE__ROOT__ROOT_H_
|
|
|
|
#include <base/exception.h>
|
|
#include <base/rpc.h>
|
|
#include <base/rpc_args.h>
|
|
#include <base/affinity.h>
|
|
#include <session/capability.h>
|
|
|
|
namespace Genode {
|
|
|
|
struct Root;
|
|
template <typename> struct Typed_root;
|
|
}
|
|
|
|
|
|
struct Genode::Root
|
|
{
|
|
/*********************
|
|
** Exception types **
|
|
*********************/
|
|
|
|
class Exception : public ::Genode::Exception { };
|
|
class Unavailable : public Exception { };
|
|
class Quota_exceeded : public Exception { };
|
|
class Invalid_args : public Exception { };
|
|
|
|
typedef Rpc_in_buffer<160> Session_args;
|
|
typedef Rpc_in_buffer<160> Upgrade_args;
|
|
|
|
virtual ~Root() { }
|
|
|
|
/**
|
|
* Create session
|
|
*
|
|
* \throw Unavailable
|
|
* \throw Quota_exceeded
|
|
* \throw Invalid_args
|
|
*
|
|
* \return capability to new session
|
|
*/
|
|
virtual Session_capability session(Session_args const &args,
|
|
Affinity const &affinity) = 0;
|
|
|
|
/**
|
|
* Extend resource donation to an existing session
|
|
*/
|
|
virtual void upgrade(Session_capability session, Upgrade_args const &args) = 0;
|
|
|
|
/**
|
|
* Close session
|
|
*/
|
|
virtual void close(Session_capability session) = 0;
|
|
|
|
|
|
/*********************
|
|
** RPC declaration **
|
|
*********************/
|
|
|
|
GENODE_RPC_THROW(Rpc_session, Session_capability, session,
|
|
GENODE_TYPE_LIST(Unavailable, Quota_exceeded, Invalid_args),
|
|
Session_args const &, Affinity const &);
|
|
GENODE_RPC_THROW(Rpc_upgrade, void, upgrade,
|
|
GENODE_TYPE_LIST(Invalid_args),
|
|
Session_capability, Upgrade_args const &);
|
|
GENODE_RPC(Rpc_close, void, close, Session_capability);
|
|
|
|
GENODE_RPC_INTERFACE(Rpc_session, Rpc_upgrade, Rpc_close);
|
|
};
|
|
|
|
|
|
/**
|
|
* Root interface supplemented with information about the managed
|
|
* session type
|
|
*
|
|
* This class template is used to automatically propagate the
|
|
* correct session type to 'Parent::announce()' when announcing
|
|
* a service.
|
|
*/
|
|
template <typename SESSION_TYPE>
|
|
struct Genode::Typed_root : Root
|
|
{
|
|
typedef SESSION_TYPE Session_type;
|
|
};
|
|
|
|
#endif /* _INCLUDE__ROOT__ROOT_H_ */
|