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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
81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
/*
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* \brief Implementations for the initialization of a thread
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* \author Martin stein
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* \author Stefan Kalkowski
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* \date 2013-02-15
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*/
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/*
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* Copyright (C) 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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#include <base/sleep.h>
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/* base-internal includes */
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#include <base/internal/stack.h>
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#include <base/internal/native_utcb.h>
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/* base-hw includes */
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#include <kernel/interface.h>
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using namespace Genode;
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namespace Hw {
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Ram_dataspace_capability _main_thread_utcb_ds;
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Untyped_capability _main_thread_cap;
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Untyped_capability _parent_cap;
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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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using namespace Genode;
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using namespace Hw;
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/*
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* Make data from the startup info persistantly available by copying it
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* before the UTCB gets polluted by the following function calls.
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*/
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Native_utcb * utcb = Thread::myself()->utcb();
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_parent_cap = utcb->cap_get(Native_utcb::PARENT);
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Untyped_capability ds_cap(utcb->cap_get(Native_utcb::UTCB_DATASPACE));
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_main_thread_utcb_ds = reinterpret_cap_cast<Ram_dataspace>(ds_cap);
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_main_thread_cap = utcb->cap_get(Native_utcb::THREAD_MYSELF);
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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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Native_utcb *Thread::utcb()
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{
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if (this) { return &_stack->utcb(); }
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return utcb_main_thread();
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}
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void Thread::_thread_start()
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{
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Thread::myself()->_thread_bootstrap();
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Thread::myself()->entry();
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Thread::myself()->_join_lock.unlock();
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Genode::sleep_forever();
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}
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void Thread::_thread_bootstrap() {
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native_thread().cap = myself()->utcb()->cap_get(Native_utcb::THREAD_MYSELF); }
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