b49e588c1c
This patch replaces the former 'Pd_session::bind_thread' function by a PD-capability argument of the 'Cpu_session::create_thread' function, and removes the ancient thread-start protocol via 'Rm_session::add_client' and 'Cpu_session::set_pager'. Threads are now bound to PDs at their creation time and implicitly paged according to the address space of the PD. Note the API change: This patch changes the signature of the 'Child' and 'Process' constructors. There is a new 'address_space' argument, which represents the region map representing the child's address space. It is supplied separately to the PD session capability (which principally can be invoked to obtain the PD's address space) to allow the population of the address space without relying on an 'Pd_session::address_space' RPC call. Furthermore, a new (optional) env_pd argument allows the explicit overriding of the PD capability handed out to the child as part of its environment. It can be used to intercept the interaction of the child with its PD session at core. This is used by Noux. Issue #1938
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/*
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* \brief Client-side stub for region map
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* \author Christian Helmuth
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* \author Norman Feske
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* \date 2006-07-11
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*/
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/*
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* Copyright (C) 2006-2016 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__REGION_MAP__CLIENT_H_
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#define _INCLUDE__REGION_MAP__CLIENT_H_
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#include <base/rpc_client.h>
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#include <region_map/region_map.h>
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namespace Genode { class Region_map_client; }
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class Genode::Region_map_client : public Rpc_client<Region_map>
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{
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private:
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/*
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* Multiple calls to get the dataspace capability on NOVA lead to the
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* situation that the caller gets each time a new mapping of the same
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* capability at different indices. But the client/caller assumes to
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* get every time the very same index, e.g., in Noux the index is used
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* to look up data structures attached to the capability. Therefore, we
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* cache the dataspace capability on the first request.
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*
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* On all other base platforms, this member variable remains unused.
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*/
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Dataspace_capability _rm_ds_cap;
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public:
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explicit Region_map_client(Capability<Region_map>);
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Local_addr attach(Dataspace_capability ds, 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 = (void *)0,
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bool executable = false) override;
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void detach(Local_addr) override;
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void fault_handler(Signal_context_capability) override;
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State state() override;
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Dataspace_capability dataspace() override;
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};
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#endif /* _INCLUDE__REGION_MAP__CLIENT_H_ */
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