91 lines
2.0 KiB
C++
91 lines
2.0 KiB
C++
/*
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* \brief RPC capability factory
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* \author Norman Feske
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* \date 2016-01-19
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*/
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/*
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* Copyright (C) 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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/* core-local includes */
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#include <rpc_cap_factory.h>
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#include <platform_pd.h>
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using namespace Genode;
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Native_capability Rpc_cap_factory::alloc(Native_capability ep, addr_t entry, addr_t mtd)
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{
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addr_t pt_sel = cap_map()->insert();
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addr_t pd_sel = Platform_pd::pd_core_sel();
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addr_t ec_sel = ep.local_name();
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using namespace Nova;
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Lock::Guard guard(_lock);
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/* create cap object */
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Cap_object * pt_cap = new (&_slab) Cap_object(pt_sel);
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if (!pt_cap)
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return Native_capability::invalid_cap();
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_list.insert(pt_cap);
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/* create portal */
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uint8_t const res = create_pt(pt_sel, pd_sel, ec_sel, Mtd(mtd), entry);
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if (res == NOVA_OK)
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return Native_capability(pt_sel);
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PERR("cap_session - cap=%lx:%lx addr=%lx mtd=%lx xpt=%lx res=%u",
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ec_sel, ep.local_name(), entry, mtd, pt_sel, res);
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_list.remove(pt_cap);
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destroy(&_slab, pt_cap);
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/* cleanup unused selectors */
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cap_map()->remove(pt_sel, 0, false);
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return Native_capability::invalid_cap();
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}
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void Rpc_cap_factory::free(Native_capability cap)
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{
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if (!cap.valid()) return;
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Lock::Guard guard(_lock);
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for (Cap_object *obj = _list.first(); obj ; obj = obj->next()) {
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if (cap.local_name() == obj->_cap_sel) {
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Nova::revoke(Nova::Obj_crd(obj->_cap_sel, 0));
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cap_map()->remove(obj->_cap_sel, 0, false);
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_list.remove(obj);
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destroy(&_slab, obj);
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return;
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}
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}
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PDBG("invalid cap object");
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}
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Rpc_cap_factory::Rpc_cap_factory(Allocator &md_alloc) : _slab(&md_alloc) { }
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Rpc_cap_factory::~Rpc_cap_factory()
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{
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Lock::Guard guard(_lock);
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for (Cap_object *obj; (obj = _list.first()); ) {
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Nova::revoke(Nova::Obj_crd(obj->_cap_sel, 0));
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cap_map()->remove(obj->_cap_sel, 0, false);
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_list.remove(obj);
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destroy(&_slab, obj);
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}
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}
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