fd401bdf53
This patch cleans up the thread API and comes with the following noteworthy changes: - Introduced Cpu_session::Weight type that replaces a formerly used plain integer value to prevent the accidental mix-up of arguments. - The enum definition of Cpu_session::DEFAULT_WEIGHT moved to Cpu_session::Weight::DEFAULT_WEIGHT - New Thread constructor that takes a 'Env &' as first argument. The original constructors are now marked as deprecated. For the common use case where the default 'Weight' and 'Affinity' are used, a shortcut is provided. In the long term, those two constructors should be the only ones to remain. - The former 'Thread<>' class template has been renamed to 'Thread_deprecated'. - The former 'Thread_base' class is now called 'Thread'. - The new 'name()' accessor returns the thread's name as 'Name' object as centrally defined via 'Cpu_session::Name'. It is meant to replace the old-fashioned 'name' method that takes a buffer and size as arguments. - Adaptation of the thread test to the new API Issue #1954
39 lines
1018 B
C++
39 lines
1018 B
C++
/*
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* \brief Implementation of the Thread API (generic myself())
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* \author Norman Feske
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* \date 2015-04-28
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*/
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/*
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* Copyright (C) 2015 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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/* Genode includes */
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#include <base/thread.h>
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/* base-internal includes */
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#include <base/internal/stack_allocator.h>
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#include <base/internal/stack_area.h>
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Genode::Thread *Genode::Thread::myself()
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{
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int dummy = 0; /* used for determining the stack pointer */
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/*
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* If the stack pointer is outside the stack area, we assume that
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* we are the main thread because this condition can never met by any other
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* thread.
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*/
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addr_t sp = (addr_t)(&dummy);
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if (sp < Genode::stack_area_virtual_base() ||
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sp >= Genode::stack_area_virtual_base() + Genode::stack_area_virtual_size())
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return 0;
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addr_t base = Stack_allocator::addr_to_base(&dummy);
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return &Stack_allocator::base_to_stack(base)->thread();
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}
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