17c79a9e23
Besides adapting the components to the use of base/log.h, the patch cleans up a few base headers, i.e., it removes unused includes from root/component.h, specifically base/heap.h and ram_session/ram_session.h. Hence, components that relied on the implicit inclusion of those headers have to manually include those headers now. While adjusting the log messages, I repeatedly stumbled over the problem that printing char * arguments is ambiguous. It is unclear whether to print the argument as pointer or null-terminated string. To overcome this problem, the patch introduces a new type 'Cstring' that allows the caller to express that the argument should be handled as null-terminated string. As a nice side effect, with this type in place, the optional len argument of the 'String' class could be removed. Instead of supplying a pair of (char const *, size_t), the constructor accepts a 'Cstring'. This, in turn, clears the way let the 'String' constructor use the new output mechanism to assemble a string from multiple arguments (and thereby getting rid of snprintf within Genode in the near future). To enforce the explicit resolution of the char * ambiguity, the 'char *' overload of the 'print' function is marked as deleted. Issue #1987
72 lines
1.6 KiB
C++
72 lines
1.6 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) 2012-2013 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 _CORE__INCLUDE__CPU_THREAD_ALLOCATOR_H_
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#define _CORE__INCLUDE__CPU_THREAD_ALLOCATOR_H_
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#include <base/log.h>
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#include <base/allocator.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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Allocator * const _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
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{
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warning(__func__, "unexpectedly called");
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while (1) ;
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return 0;
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}
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size_t overhead(size_t size) const override
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{
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warning(__func__, "unexpectedly called");
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while (1) ;
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return 0;
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}
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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__INCLUDE__CPU_THREAD_ALLOCATOR_H_ */
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