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Multiple calls to get the dataspace capability on NOVA lead to the situation that the caller gets each time a new mapping of the same capability at different indexes. The client/caller assumes to get every time the very same index, e.g. in Noux the index is used to look up structures. Cache the dataspace capability returned via a rm_session for base-nova.
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/*
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* \brief Client-side region manager session interface
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* \author Christian Helmuth
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* \author Alexander Boettcher
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* \date 2006-07-11
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*/
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/*
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* Copyright (C) 2006-2012 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__RM_SESSION__CLIENT_H_
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#define _INCLUDE__RM_SESSION__CLIENT_H_
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#include <rm_session/capability.h>
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#include <base/rpc_client.h>
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namespace Genode {
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struct Rm_session_client : Rpc_client<Rm_session>
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{
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Dataspace_capability _rm_ds_cap;
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explicit Rm_session_client(Rm_session_capability session)
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: Rpc_client<Rm_session>(session) { }
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Local_addr attach(Dataspace_capability ds, size_t size, off_t offset,
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bool use_local_addr, Local_addr local_addr,
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bool executable = false)
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{
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return call<Rpc_attach>(ds, size, offset,
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use_local_addr, local_addr,
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executable);
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}
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void detach(Local_addr local_addr) {
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call<Rpc_detach>(local_addr); }
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Pager_capability add_client(Thread_capability thread) {
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return call<Rpc_add_client>(thread); }
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void fault_handler(Signal_context_capability handler) {
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call<Rpc_fault_handler>(handler); }
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State state() {
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return call<Rpc_state>(); }
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Dataspace_capability dataspace() {
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if (!_rm_ds_cap.valid())
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_rm_ds_cap = call<Rpc_dataspace>();
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return _rm_ds_cap;
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}
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};
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}
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#endif /* _INCLUDE__RM_SESSION__CLIENT_H_ */
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