a99989af40
This patch moves the thread operations from the 'Cpu_session' to the 'Cpu_thread' interface. A noteworthy semantic change is the meaning of the former 'exception_handler' function, which used to define both, the default exception handler or a thread-specific signal handler. Now, the 'Cpu_session::exception_sigh' function defines the CPU-session-wide default handler whereas the 'Cpu_thread::exception_sigh' function defines the thread-specific one. To retain the ability to create 'Child' objects without invoking a capability, the child's initial thread must be created outside the 'Child::Process'. It is now represented by the 'Child::Initial_thread', which is passed as argument to the 'Child' constructor. Fixes #1939
114 lines
2.0 KiB
C++
114 lines
2.0 KiB
C++
/*
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* \brief Core implementation of the CPU thread interface
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* \author Norman Feske
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* \date 2016-05-10
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*/
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/*
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* Copyright (C) 2016 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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/* core includes */
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#include <cpu_thread_component.h>
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using namespace Genode;
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void Cpu_thread_component::_update_exception_sigh()
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{
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Signal_context_capability sigh = _thread_sigh.valid()
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? _thread_sigh : _session_sigh;
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if (_platform_thread.pager())
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_platform_thread.pager()->exception_handler(sigh);
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}
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void Cpu_thread_component::quota(size_t quota)
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{
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_platform_thread.quota(quota);
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}
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void Cpu_thread_component::session_exception_sigh(Signal_context_capability sigh)
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{
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_session_sigh = sigh;
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_update_exception_sigh();
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}
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void Cpu_thread_component::start(addr_t ip, addr_t sp)
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{
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_platform_thread.start((void *)ip, (void *)sp);
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}
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void Cpu_thread_component::pause()
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{
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_platform_thread.pause();
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}
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void Cpu_thread_component::single_step(bool enabled)
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{
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_platform_thread.single_step(enabled);
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}
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void Cpu_thread_component::resume()
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{
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_platform_thread.resume();
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}
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void Cpu_thread_component::cancel_blocking()
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{
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_platform_thread.cancel_blocking();
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}
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Thread_state Cpu_thread_component::state()
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{
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return _platform_thread.state();
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}
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void Cpu_thread_component::state(Thread_state const &state)
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{
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_platform_thread.state(state);
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}
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void Cpu_thread_component::exception_sigh(Signal_context_capability sigh)
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{
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_thread_sigh = sigh;
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_update_exception_sigh();
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}
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void Cpu_thread_component::affinity(Affinity::Location location)
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{
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_platform_thread.affinity(location);
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}
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unsigned Cpu_thread_component::trace_control_index()
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{
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return _trace_control_slot.index;
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}
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Dataspace_capability Cpu_thread_component::trace_buffer()
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{
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return _trace_source.buffer();
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}
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Dataspace_capability Cpu_thread_component::trace_policy()
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{
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return _trace_source.policy();
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}
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