177 lines
3.4 KiB
C++
177 lines
3.4 KiB
C++
/*
|
|
* \brief Thread facility
|
|
* \author Norman Feske
|
|
* \date 2015-05-01
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2015 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _CORE__INCLUDE__PLATFORM_THREAD_H_
|
|
#define _CORE__INCLUDE__PLATFORM_THREAD_H_
|
|
|
|
/* Genode includes */
|
|
#include <base/pager.h>
|
|
#include <base/thread_state.h>
|
|
#include <base/native_types.h>
|
|
#include <util/string.h>
|
|
#include <base/ipc_pager.h>
|
|
|
|
/* core includes */
|
|
#include <address_space.h>
|
|
#include <thread_sel4.h>
|
|
#include <install_mapping.h>
|
|
|
|
namespace Genode {
|
|
|
|
class Platform_pd;
|
|
class Platform_thread;
|
|
}
|
|
|
|
|
|
class Genode::Platform_thread : public List<Platform_thread>::Element
|
|
{
|
|
private:
|
|
|
|
Pager_object *_pager = nullptr;
|
|
|
|
String<128> _name;
|
|
|
|
/**
|
|
* Virtual address of the IPC buffer within the PDs address space
|
|
*
|
|
* The value is 0 for the PD's main thread. For all other threads,
|
|
* the value is somewhere within the context area.
|
|
*/
|
|
addr_t const _utcb;
|
|
|
|
Thread_info _info;
|
|
|
|
unsigned const _pager_obj_sel;
|
|
|
|
/*
|
|
* Selectors within the PD's CSpace
|
|
*
|
|
* Allocated when the thread is started.
|
|
*/
|
|
unsigned _fault_handler_sel = 0;
|
|
unsigned _ep_sel = 0;
|
|
|
|
friend class Platform_pd;
|
|
|
|
Platform_pd *_pd = nullptr;
|
|
|
|
enum { INITIAL_IPC_BUFFER_VIRT = 0x1000 };
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor
|
|
*/
|
|
Platform_thread(size_t, const char *name = 0, unsigned priority = 0,
|
|
addr_t utcb = 0);
|
|
|
|
/**
|
|
* Destructor
|
|
*/
|
|
~Platform_thread();
|
|
|
|
/**
|
|
* Start thread
|
|
*
|
|
* \param ip instruction pointer to start at
|
|
* \param sp stack pointer to use
|
|
* \param cpu_no target cpu
|
|
*
|
|
* \retval 0 successful
|
|
* \retval -1 thread could not be started
|
|
*/
|
|
int start(void *ip, void *sp, unsigned int cpu_no = 0);
|
|
|
|
/**
|
|
* Pause this thread
|
|
*/
|
|
void pause();
|
|
|
|
/**
|
|
* Resume this thread
|
|
*/
|
|
void resume();
|
|
|
|
/**
|
|
* Cancel currently blocking operation
|
|
*/
|
|
void cancel_blocking();
|
|
|
|
/**
|
|
* Override thread state with 's'
|
|
*
|
|
* \throw Cpu_session::State_access_failed
|
|
*/
|
|
void state(Thread_state s);
|
|
|
|
/**
|
|
* Read thread state
|
|
*
|
|
* \throw Cpu_session::State_access_failed
|
|
*/
|
|
Thread_state state();
|
|
|
|
/**
|
|
* Return the address space to which the thread is bound
|
|
*/
|
|
Weak_ptr<Address_space> address_space();
|
|
|
|
|
|
/************************
|
|
** Accessor functions **
|
|
************************/
|
|
|
|
/**
|
|
* Set pager capability
|
|
*/
|
|
Pager_object *pager(Pager_object *pager) const { return _pager; }
|
|
void pager(Pager_object *pager) { _pager = pager; }
|
|
Pager_object *pager() { return _pager; }
|
|
|
|
/**
|
|
* Return identification of thread when faulting
|
|
*/
|
|
unsigned long pager_object_badge() const { return _pager_obj_sel; }
|
|
|
|
/**
|
|
* Set the executing CPU for this thread
|
|
*/
|
|
void affinity(Affinity::Location) { }
|
|
|
|
/**
|
|
* Get the executing CPU for this thread
|
|
*/
|
|
Affinity::Location affinity() { return Affinity::Location(); }
|
|
|
|
/**
|
|
* Set CPU quota of the thread
|
|
*/
|
|
void quota(size_t) { /* not supported */ }
|
|
|
|
/**
|
|
* Get thread name
|
|
*/
|
|
const char *name() const { return "noname"; }
|
|
|
|
|
|
/*****************************
|
|
** seL4-specific interface **
|
|
*****************************/
|
|
|
|
unsigned tcb_sel() const { return _info.tcb_sel; }
|
|
|
|
void install_mapping(Mapping const &mapping);
|
|
};
|
|
|
|
#endif /* _CORE__INCLUDE__PLATFORM_THREAD_H_ */
|