62b1c55399
This patch integrates the functionality of the former CAP session into the PD session and unifies the approch of supplementing the generic PD session with kernel-specific functionality. The latter is achieved by the new 'Native_pd' interface. The kernel-specific interface can be obtained via the Pd_session::native_pd accessor function. The kernel-specific interfaces are named Nova_native_pd, Foc_native_pd, and Linux_native_pd. The latter change allowed for to deduplication of the pd_session_component code among the various base platforms. To retain API compatibility, we keep the 'Cap_session' and 'Cap_connection' around. But those classes have become mere wrappers around the PD session interface. Issue #1841
91 lines
1.8 KiB
C++
91 lines
1.8 KiB
C++
/*
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* \brief Tasks for l4lx support library.
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* \author Stefan Kalkowski
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* \date 2011-04-27
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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__TASK_H_
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#define _L4LX__TASK_H_
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/* Genode includes */
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#include <pd_session/connection.h>
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#include <foc_native_pd/client.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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#include <l4/sys/consts.h>
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}
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namespace L4lx {
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class Task : public Genode::Avl_node<Task>
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{
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private:
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Fiasco::l4_cap_idx_t _ref;
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Genode::Pd_connection _pd;
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Genode::Foc_native_pd_client _native_pd { _pd.native_pd() };
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Genode::Native_capability _cap;
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public:
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/*****************
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** Constructor **
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*****************/
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Task(Fiasco::l4_cap_idx_t ref)
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:
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_ref(ref), _cap(_native_pd.task_cap())
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{
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using namespace Fiasco;
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/* remap task cap to given cap slot */
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l4_task_map(L4_BASE_TASK_CAP, L4_BASE_TASK_CAP,
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l4_obj_fpage(_cap.dst(), 0, L4_FPAGE_RWX),
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_ref | L4_ITEM_MAP);
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}
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/***************
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** Accessors **
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***************/
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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(Task *n) { return n->_ref > _ref; }
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Task *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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Task *n = Genode::Avl_node<Task>::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 Task_tree : public Genode::Avl_tree<Task>
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{
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public:
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Task* 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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};
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}
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#endif /* _L4LX__TASK_H_ */
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