511acad507
This patch integrates three region maps into each PD session to reduce the session overhead and to simplify the PD creation procedure. Please refer to the issue cited below for an elaborative discussion. Note the API change: With this patch, the semantics of core's RM service have changed. Now, the service is merely a tool for creating and destroying managed dataspaces, which are rarely needed. Regular components no longer need a RM session. For this reason, the corresponding argument for the 'Process' and 'Child' constructors has been removed. The former interface of the 'Rm_session' is not named 'Region_map'. As a minor refinement, the 'Fault_type' enum values are now part of the 'Region_map::State' struct. Issue #1938
57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
/*
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* \brief Core-local region map
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* \author Norman Feske
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* \date 2015-05-01
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*/
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/*
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* Copyright (C) 2015 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 _CORE__INCLUDE__CORE_RM_SESSION_H_
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#define _CORE__INCLUDE__CORE_RM_SESSION_H_
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/* Genode includes */
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#include <base/printf.h>
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#include <region_map/region_map.h>
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/* core includes */
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#include <dataspace_component.h>
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namespace Genode { class Core_region_map; }
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class Genode::Core_region_map : public Region_map
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{
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private:
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Rpc_entrypoint *_ds_ep;
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public:
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Core_region_map(Rpc_entrypoint *ds_ep): _ds_ep(ds_ep) { }
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Local_addr attach(Dataspace_capability ds_cap, size_t size = 0,
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off_t offset = 0, bool use_local_addr = false,
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Local_addr local_addr = 0,
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bool executable = false) override;
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void detach(Local_addr) override { }
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Pager_capability add_client(Thread_capability) override {
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return Pager_capability(); }
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void remove_client(Pager_capability) override { }
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void fault_handler(Signal_context_capability) override { }
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State state() override { return State(); }
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Dataspace_capability dataspace() override { return Dataspace_capability(); }
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};
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#endif /* _CORE__INCLUDE__CORE_RM_SESSION_H_ */
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