64 lines
1.4 KiB
C++
64 lines
1.4 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) 2016-2017 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 Affero General Public License version 3.
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*/
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#ifndef _CORE__INCLUDE__RPC_CAP_FACTORY_H_
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#define _CORE__INCLUDE__RPC_CAP_FACTORY_H_
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/* Genode includes */
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#include <base/rpc_server.h>
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#include <base/heap.h>
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#include <base/tslab.h>
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#include <base/object_pool.h>
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/* base-internal includes */
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#include <base/internal/page_size.h>
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namespace Genode { class Rpc_cap_factory; }
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class Genode::Rpc_cap_factory
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{
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private:
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struct Entry : Object_pool<Entry>::Entry
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{
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Entry(Native_capability cap) : Object_pool<Entry>::Entry(cap) {}
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};
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Object_pool<Entry> _pool { };
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/*
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* Dimension '_entry_slab' such that slab blocks (including the
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* meta-data overhead of the sliced-heap blocks) are page sized.
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*/
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static constexpr size_t SLAB_BLOCK_SIZE =
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get_page_size() - Sliced_heap::meta_data_size();
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uint8_t _initial_sb[SLAB_BLOCK_SIZE];
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Tslab<Entry, SLAB_BLOCK_SIZE> _entry_slab;
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public:
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Rpc_cap_factory(Allocator &md_alloc)
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: _entry_slab(md_alloc, _initial_sb) { }
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~Rpc_cap_factory();
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Native_capability alloc(Native_capability ep);
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void free(Native_capability cap);
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};
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#endif /* _CORE__INCLUDE__RPC_CAP_FACTORY_H_ */
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