96 lines
2.3 KiB
C++
96 lines
2.3 KiB
C++
/*
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* \brief Dataspace abstraction between Genode and L4Linux
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* \author Stefan Kalkowski
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* \date 2011-03-20
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*/
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/*
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* Copyright (C) 2011-2013 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 _L4LX__DATASPACE_H_
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#define _L4LX__DATASPACE_H_
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/* Genode includes */
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#include <dataspace/client.h>
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#include <base/cap_map.h>
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#include <util/avl_tree.h>
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namespace Fiasco {
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#include <l4/sys/types.h>
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}
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namespace L4lx {
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class Dataspace : public Genode::Avl_node<Dataspace>
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{
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private:
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const char* _name;
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Genode::size_t _size;
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Genode::Dataspace_capability _cap;
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Fiasco::l4_cap_idx_t _ref;
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public:
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/******************
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** Constructors **
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******************/
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Dataspace(const char* name,
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Genode::size_t size,
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Genode::Dataspace_capability ds,
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Fiasco::l4_cap_idx_t ref)
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: _name(name), _size(size), _cap(ds), _ref(ref) {}
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Dataspace(const char* name,
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Genode::size_t size,
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Genode::Dataspace_capability ds)
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: _name(name), _size(size), _cap(ds),
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_ref(Genode::cap_idx_alloc()->alloc_range(1)->kcap()) {}
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/***************
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** Accessors **
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***************/
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const char* name() const { return _name; }
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Genode::size_t size() { return _size; }
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Genode::Dataspace_capability cap() { return _cap; }
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Fiasco::l4_cap_idx_t ref() { return _ref; }
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/************************
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** Avl_node interface **
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************************/
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bool higher(Dataspace *n) { return n->_ref > _ref; }
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Dataspace *find_by_ref(Fiasco::l4_cap_idx_t ref)
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{
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if (_ref == ref) return this;
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Dataspace *n = Genode::Avl_node<Dataspace>::child(ref > _ref);
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return n ? n->find_by_ref(ref) : 0;
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}
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};
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class Dataspace_tree : public Genode::Avl_tree<Dataspace>
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{
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public:
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Dataspace* find_by_ref(Fiasco::l4_cap_idx_t ref) {
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return this->first() ? this->first()->find_by_ref(ref) : 0; }
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Dataspace* insert(const char* name, Genode::Dataspace_capability cap);
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void insert(Dataspace *ds) { Genode::Avl_tree<Dataspace>::insert(ds); }
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};
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}
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#endif /* _L4LX__DATASPACE_H_ */
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