109 lines
2.6 KiB
C++
109 lines
2.6 KiB
C++
/*
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* \brief Implementation of Thread API interface for core
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* \author Stefan Kalkowski
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* \author Martin Stein
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* \date 2014-02-27
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*/
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/*
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* Copyright (C) 2014-2017 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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/* Genode includes */
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#include <base/thread.h>
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#include <base/sleep.h>
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#include <base/env.h>
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/* base-internal stack */
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#include <base/internal/stack.h>
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#include <base/internal/native_utcb.h>
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/* core includes */
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#include <map_local.h>
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#include <kernel/kernel.h>
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#include <platform.h>
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#include <platform_thread.h>
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#include <trace/source_registry.h>
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using namespace Genode;
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namespace Hw { extern Untyped_capability _main_thread_cap; }
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void Thread::start()
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{
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/* start thread with stack pointer at the top of stack */
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if (native_thread().platform_thread->start((void *)&_thread_start, stack_top())) {
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error("failed to start thread");
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return;
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}
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struct Trace_source : public Trace::Source::Info_accessor,
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private Trace::Control,
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private Trace::Source
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{
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Genode::Thread &thread;
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/**
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* Trace::Source::Info_accessor interface
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*/
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Info trace_source_info() const override
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{
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Platform_thread * t = thread.native_thread().platform_thread;
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Trace::Execution_time execution_time { 0, 0 };
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if (t)
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execution_time = t->execution_time();
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return { Session_label("core"), thread.name(),
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execution_time, thread.affinity() };
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}
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Trace_source(Trace::Source_registry ®istry, Genode::Thread &thread)
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:
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Trace::Control(),
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Trace::Source(*this, *this),
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thread(thread)
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{
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registry.insert(this);
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}
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};
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/* create trace sources for core threads */
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new (platform().core_mem_alloc()) Trace_source(Trace::sources(), *this);
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}
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void Thread::cancel_blocking()
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{
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native_thread().platform_thread->cancel_blocking();
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}
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void Thread::_deinit_platform_thread()
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{
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/* destruct platform thread */
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destroy(platform().core_mem_alloc(), native_thread().platform_thread);
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}
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void Thread::_init_platform_thread(size_t, Type type)
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{
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if (type == NORMAL) {
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native_thread().platform_thread = new (platform().core_mem_alloc())
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Platform_thread(_stack->name(), _stack->utcb());
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return;
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}
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/* remap initial main-thread UTCB according to stack-area spec */
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Genode::map_local(Platform::core_phys_addr((addr_t)Kernel::Core_thread::singleton().utcb()),
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(addr_t)&_stack->utcb(),
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max(sizeof(Native_utcb) / get_page_size(), (size_t)1));
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/* adjust initial object state in case of a main thread */
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native_thread().cap = Hw::_main_thread_cap;
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}
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