75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
/*
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* \brief Platform specific parts of the core CPU session
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* \author Martin Stein
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* \date 2012-03-21
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*/
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/*
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* Copyright (C) 2012-2017 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__CPU_THREAD_ALLOCATOR_H_
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#define _CORE__CPU_THREAD_ALLOCATOR_H_
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/* Genode includes */
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#include <base/log.h>
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#include <base/allocator.h>
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/* core includes */
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#include <assertion.h>
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namespace Genode
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{
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/**
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* Thread allocator for cores CPU service
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*
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* Normally one would use a SLAB for threads because usually they
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* are tiny objects, but in 'base-hw' they contain the whole kernel
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* object in addition. Thus we use the given allocator directly.
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*/
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class Cpu_thread_allocator : public Allocator
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{
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private:
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/*
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* Noncopyable
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*/
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Cpu_thread_allocator(Cpu_thread_allocator const &);
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Cpu_thread_allocator &operator = (Cpu_thread_allocator const &);
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Allocator &_alloc;
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public:
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/**
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* Constructor
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*
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* \param alloc allocator backend
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*/
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Cpu_thread_allocator(Allocator &alloc) : _alloc(alloc) { }
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/*************************
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** Allocator interface **
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*************************/
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bool alloc(size_t size, void **out_addr) override {
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return _alloc.alloc(size, out_addr); }
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void free(void *addr, size_t size) override {
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_alloc.free(addr, size); }
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size_t consumed() const override { ASSERT_NEVER_CALLED; }
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size_t overhead(size_t) const override { ASSERT_NEVER_CALLED; }
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bool need_size_for_free() const override {
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return _alloc.need_size_for_free(); }
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};
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}
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#endif /* _CORE__CPU_THREAD_ALLOCATOR_H_ */
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