185 lines
3.7 KiB
C++
185 lines
3.7 KiB
C++
/*
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* \brief Thread facility
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* \author Norman Feske
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* \author Alexander Boettcher
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* \date 2009-10-02
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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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#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 <thread/capability.h>
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#include <base/thread_state.h>
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#include <base/native_types.h>
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#include <base/thread.h>
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/* base-internal includes */
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#include <base/internal/stack.h>
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/* core includes */
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#include <pager.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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Platform_pd *_pd;
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Pager_object *_pager;
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addr_t _id_base;
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addr_t _sel_exc_base;
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Affinity::Location _location;
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enum {
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MAIN_THREAD = 0x1U,
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VCPU = 0x2U,
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WORKER = 0x4U,
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};
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uint8_t _features;
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uint8_t _priority;
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Stack::Name _name;
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addr_t _sel_ec() const { return _id_base; }
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addr_t _sel_pt_oom() const { return _id_base + 1; }
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addr_t _sel_sc() const { return _id_base + 2; }
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/* convenience function to access _feature variable */
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inline bool is_main_thread() const { return _features & MAIN_THREAD; }
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inline bool is_vcpu() const { return _features & VCPU; }
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inline bool is_worker() const { return _features & WORKER; }
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public:
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/* invalid thread number */
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enum { THREAD_INVALID = -1 };
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/**
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* Constructor
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*/
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Platform_thread(const char *name = 0,
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unsigned priority = 0,
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int thread_id = THREAD_INVALID);
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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/vCPU 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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Native_capability 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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* 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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* 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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* Set pager
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*/
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void pager(Pager_object *pager) { _pager = pager; }
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/**
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* Return pager object
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*/
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Pager_object *pager() { return _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() const;
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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() const;
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/**
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* Get thread name
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*/
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const char *name() const { return "noname"; }
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/**
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* Associate thread with protection domain
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*/
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void bind_to_pd(Platform_pd *pd, bool main_thread)
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{
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_pd = pd;
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if (main_thread) _features |= MAIN_THREAD;
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}
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Native_capability single_step(bool on);
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/**
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* Set CPU quota of the thread to 'quota'
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*/
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void quota(size_t const quota) { /* not supported*/ }
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/**
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* Return execution time consumed by the thread
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*/
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unsigned long long execution_time() const;
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};
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}
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#endif /* _CORE__INCLUDE__PLATFORM_THREAD_H_ */
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