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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
44 lines
1.0 KiB
C++
44 lines
1.0 KiB
C++
/*
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* \brief Connection to RAM service
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* \author Norman Feske
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* \date 2008-08-22
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*/
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/*
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* Copyright (C) 2008-2013 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__RAM_SESSION__CONNECTION_H_
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#define _INCLUDE__RAM_SESSION__CONNECTION_H_
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#include <ram_session/client.h>
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#include <base/connection.h>
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namespace Genode { struct Ram_connection; }
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struct Genode::Ram_connection : Connection<Ram_session>, Ram_session_client
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{
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enum { RAM_QUOTA = 4*1024*sizeof(long) };
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/**
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* Constructor
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*
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* \param label session label
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*/
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Ram_connection(const char *label = "", unsigned long phys_start = 0UL,
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unsigned long phys_size = 0UL)
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:
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Connection<Ram_session>(
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session("ram_quota=%u, phys_start=0x%lx, phys_size=0x%lx, "
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"label=\"%s\"", RAM_QUOTA, phys_start, phys_size, label)),
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Ram_session_client(cap())
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{ }
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};
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#endif /* _INCLUDE__RAM_SESSION__CONNECTION_H_ */
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