184 lines
4.0 KiB
C++
184 lines
4.0 KiB
C++
/*
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* \brief Fiasco thread facility
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* \author Christian Helmuth
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* \author Stefan Kalkowski
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* \date 2006-04-11
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*/
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/*
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* Copyright (C) 2006-2013 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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#ifndef _CORE__INCLUDE__PLATFORM_THREAD_H_
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#define _CORE__INCLUDE__PLATFORM_THREAD_H_
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/* Genode includes */
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#include <base/native_types.h>
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#include <base/thread_state.h>
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#include <base/pager.h>
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/* core includes */
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#include <platform_pd.h>
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#include <cap_session_component.h>
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#include <cap_mapping.h>
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#include <address_space.h>
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namespace Genode {
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class Platform_pd;
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class Platform_thread
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{
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private:
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enum State { DEAD, RUNNING };
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friend class Platform_pd;
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State _state;
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bool _core_thread;
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Cap_mapping _thread;
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Cap_mapping _gate;
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Cap_mapping _pager;
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Cap_mapping _irq;
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Native_utcb _utcb;
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char _name[32]; /* thread name that will be
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registered at the kernel
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debugger */
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Platform_pd *_platform_pd; /* protection domain thread
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is bound to */
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Pager_object *_pager_obj;
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unsigned _prio;
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Affinity::Location _location;
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void _create_thread(void);
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void _finalize_construction(const char *name);
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bool _in_syscall(Fiasco::l4_umword_t flags);
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public:
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enum { DEFAULT_PRIORITY = 128 };
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/**
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* Constructor for non-core threads
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*/
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Platform_thread(const char *name, unsigned priority);
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/**
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* Constructor for core main-thread
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*/
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Platform_thread(Core_cap_index* thread,
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Core_cap_index* irq, const char *name);
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/**
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* Constructor for core threads
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*/
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Platform_thread(const char *name);
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/**
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* Destructor
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*/
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~Platform_thread();
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/**
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* Start thread
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*
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* \param ip instruction pointer to start at
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* \param sp stack pointer to use
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*
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* \retval 0 successful
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* \retval -1 thread could not be started
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*/
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int start(void *ip, void *sp);
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/**
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* Pause this thread
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*/
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void pause();
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/**
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* Resume this thread
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*/
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void resume();
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/**
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* Cancel currently blocking operation
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*/
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void cancel_blocking();
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/**
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* This thread is about to be bound
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*
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* \param pd platform pd, thread is bound to
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*/
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void bind(Platform_pd *pd);
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/**
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* Unbind this thread
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*/
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void unbind();
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/**
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* Override thread state with 's'
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*
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* \throw Cpu_session::State_access_failed
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*/
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void state(Thread_state s);
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/**
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* Read thread state
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*
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* \throw Cpu_session::State_access_failed
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*/
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Thread_state state();
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/**
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* Set the executing CPU for this thread
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*/
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void affinity(Affinity::Location location);
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/**
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* Get the executing CPU for this thread
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*/
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Affinity::Location affinity();
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/**
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* Return the address space to which the thread is bound
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*/
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Weak_ptr<Address_space> address_space();
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/************************
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** Accessor functions **
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************************/
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/**
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* Return/set pager
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*/
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Pager_object *pager() const { return _pager_obj; }
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void pager(Pager_object *pager);
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/**
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* Return identification of thread when faulting
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*/
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unsigned long pager_object_badge() {
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return (unsigned long) _thread.local.dst(); }
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/*******************************
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** Fiasco-specific Accessors **
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*******************************/
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Cap_mapping& thread() { return _thread; }
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Cap_mapping& gate() { return _gate; }
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const char *name() const { return _name; }
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bool core_thread() const { return _core_thread; }
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Native_utcb utcb() const { return _utcb; }
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};
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}
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#endif /* _CORE__INCLUDE__PLATFORM_THREAD_H_ */
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