cfdbccc5c2
This is a redesign of the root and parent interfaces to eliminate blocking RPC calls. - New session representation at the parent (base/session_state.h) - base-internal root proxy mechanism as migration path - Redesign of base/service.h - Removes ancient 'Connection::KEEP_OPEN' feature - Interface change of 'Child', 'Child_policy', 'Slave', 'Slave_policy' - New 'Slave::Connection' - Changed child-construction procedure to be compatible with the non-blocking parent interface and to be easier to use - The child's initial LOG session, its binary ROM session, and the linker ROM session have become part of the child's envirenment. - Session upgrading must now be performed via 'env.upgrade' instead of performing a sole RPC call the parent. To make RAM upgrades easier, the 'Connection' provides a new 'upgrade_ram' method. Issue #2120
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/*
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* \brief CPU-session client that upgrades its session quota on demand
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* \author Norman Feske
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* \date 2006-07-28
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*/
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/*
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* Copyright (C) 2006-2013 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 General Public License version 2.
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*/
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#ifndef _INCLUDE__BASE__INTERNAL__EXPANDING_CPU_SESSION_CLIENT_H_
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#define _INCLUDE__BASE__INTERNAL__EXPANDING_CPU_SESSION_CLIENT_H_
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/* Genode includes */
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#include <util/retry.h>
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#include <cpu_session/client.h>
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/* base-internal includes */
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#include <base/internal/upgradeable_client.h>
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namespace Genode { struct Expanding_cpu_session_client; }
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struct Genode::Expanding_cpu_session_client : Upgradeable_client<Genode::Cpu_session_client>
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{
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Expanding_cpu_session_client(Genode::Cpu_session_capability cap, Parent::Client::Id id)
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:
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/*
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* We need to upcast the capability because on some platforms (i.e.,
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* NOVA), 'Cpu_session_client' refers to a platform-specific session
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* interface ('Nova_cpu_session').
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*/
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Upgradeable_client<Genode::Cpu_session_client>
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(static_cap_cast<Genode::Cpu_session_client::Rpc_interface>(cap), id)
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{ }
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Thread_capability
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create_thread(Pd_session_capability pd, Name const &name,
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Affinity::Location location, Weight weight, addr_t utcb) override
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{
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return retry<Cpu_session::Out_of_metadata>(
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[&] () {
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return Cpu_session_client::create_thread(pd, name, location,
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weight, utcb); },
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[&] () { upgrade_ram(8*1024); });
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}
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};
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#endif /* _INCLUDE__BASE__INTERNAL__EXPANDING_CPU_SESSION_CLIENT_H_ */
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