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https://github.com/mmueller41/genode.git
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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
88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
/*
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* \brief Default thread bootstrap code
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* \author Norman Feske
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* \author Martin Stein
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* \date 2009-04-02
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*/
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/*
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* Copyright (C) 2009-2013 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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/* Genode includes */
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#include <base/thread.h>
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#include <base/env.h>
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/* base-internal includes */
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#include <base/internal/native_thread.h>
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/* OKL4 includes */
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namespace Okl4 { extern "C" {
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#include <l4/utcb.h>
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#include <l4/thread.h>
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} }
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Okl4::L4_ThreadId_t main_thread_tid;
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/*******************
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** local helpers **
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*******************/
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namespace Okl4
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{
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/*
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* Read global thread ID from user-defined handle and store it
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* into a designated UTCB entry.
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*/
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L4_Word_t copy_uregister_to_utcb()
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{
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using namespace Okl4;
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L4_Word_t my_global_id = L4_UserDefinedHandle();
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__L4_TCR_Set_ThreadWord(Genode::UTCB_TCR_THREAD_WORD_MYSELF,
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my_global_id);
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return my_global_id;
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}
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}
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/*****************************
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** Startup library support **
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*****************************/
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void prepare_init_main_thread()
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{
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/* copy thread ID to utcb */
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main_thread_tid.raw = Okl4::copy_uregister_to_utcb();
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/* adjust main-thread ID if this is the main thread of core */
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if (main_thread_tid.raw == 0) {
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main_thread_tid.raw = Okl4::L4_rootserver.raw;
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}
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}
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void prepare_reinit_main_thread() { prepare_init_main_thread(); }
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/************
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** Thread **
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************/
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void Genode::Thread::_thread_bootstrap()
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{
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native_thread().l4id.raw = Okl4::copy_uregister_to_utcb();
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}
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void Genode::Thread::_init_platform_thread(size_t, Type type)
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{
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if (type == NORMAL) { return; }
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native_thread().l4id.raw = main_thread_tid.raw;
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_thread_cap = env()->parent()->main_thread_cap();
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}
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