mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-22 06:57:51 +00:00
fd401bdf53
This patch cleans up the thread API and comes with the following noteworthy changes: - Introduced Cpu_session::Weight type that replaces a formerly used plain integer value to prevent the accidental mix-up of arguments. - The enum definition of Cpu_session::DEFAULT_WEIGHT moved to Cpu_session::Weight::DEFAULT_WEIGHT - New Thread constructor that takes a 'Env &' as first argument. The original constructors are now marked as deprecated. For the common use case where the default 'Weight' and 'Affinity' are used, a shortcut is provided. In the long term, those two constructors should be the only ones to remain. - The former 'Thread<>' class template has been renamed to 'Thread_deprecated'. - The former 'Thread_base' class is now called 'Thread'. - The new 'name()' accessor returns the thread's name as 'Name' object as centrally defined via 'Cpu_session::Name'. It is meant to replace the old-fashioned 'name' method that takes a buffer and size as arguments. - Adaptation of the thread test to the new API Issue #1954
117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
/*
|
|
* \brief Helper code used by core as base framework
|
|
* \author Alexander Boettcher
|
|
* \date 2012-08-08
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2012-2013 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 _INCLUDE__NOVA__UTIL_H_
|
|
#define _INCLUDE__NOVA__UTIL_H_
|
|
|
|
#include <base/printf.h>
|
|
#include <base/thread.h>
|
|
|
|
__attribute__((always_inline))
|
|
inline void nova_die(const char * text = 0)
|
|
{
|
|
/*
|
|
* If thread is de-constructed the sessions are already gone.
|
|
* Be careful when enabling printf here.
|
|
*/
|
|
while (1)
|
|
asm volatile ("ud2a" : : "a"(text));
|
|
}
|
|
|
|
|
|
inline void request_event_portal(Genode::Native_capability const &cap,
|
|
Genode::addr_t sel, Genode::addr_t event,
|
|
unsigned short log2_count = 0)
|
|
{
|
|
Genode::Thread * myself = Genode::Thread::myself();
|
|
Nova::Utcb *utcb = reinterpret_cast<Nova::Utcb *>(myself->utcb());
|
|
|
|
/* save original receive window */
|
|
Nova::Crd orig_crd = utcb->crd_rcv;
|
|
|
|
/* request event-handler portal */
|
|
utcb->crd_rcv = Nova::Obj_crd(sel, log2_count);
|
|
utcb->msg[0] = event;
|
|
utcb->msg[1] = log2_count;
|
|
utcb->set_msg_word(2);
|
|
|
|
Genode::uint8_t res = Nova::call(cap.local_name());
|
|
|
|
/* restore original receive window */
|
|
utcb->crd_rcv = orig_crd;
|
|
|
|
if (res)
|
|
PERR("request of event (%lu) capability selector failed (res=%u)", event, res);
|
|
}
|
|
|
|
|
|
inline void request_native_ec_cap(Genode::Native_capability const &cap,
|
|
Genode::addr_t const sel,
|
|
unsigned const no_pager_cap = 0)
|
|
{
|
|
request_event_portal(cap, sel , ~0UL, no_pager_cap);
|
|
}
|
|
|
|
|
|
inline void request_signal_sm_cap(Genode::Native_capability const &cap,
|
|
Genode::addr_t const sel)
|
|
{
|
|
request_event_portal(cap, sel, ~0UL - 1, 0);
|
|
}
|
|
|
|
|
|
inline void delegate_vcpu_portals(Genode::Native_capability const &cap,
|
|
Genode::addr_t const sel)
|
|
{
|
|
Genode::Thread * myself = Genode::Thread::myself();
|
|
Nova::Utcb *utcb = reinterpret_cast<Nova::Utcb *>(myself->utcb());
|
|
|
|
/* save original receive window */
|
|
Nova::Crd orig_crd = utcb->crd_rcv;
|
|
|
|
utcb->crd_rcv = Nova::Obj_crd();
|
|
|
|
Genode::uint8_t res = Nova::NOVA_OK;
|
|
enum {
|
|
TRANSLATE = true, THIS_PD = false, NON_GUEST = false, HOTSPOT = 0,
|
|
TRANSFER_ITEMS = 1U << (Nova::NUM_INITIAL_VCPU_PT_LOG2 - 1)
|
|
};
|
|
|
|
/* prepare translation items for every portal separately */
|
|
for (unsigned half = 0; !res && half < 2; half++) {
|
|
/* translate half of portals - due to size constraints on 64bit */
|
|
utcb->msg[0] = half;
|
|
utcb->set_msg_word(1);
|
|
/* add one translate item per portal */
|
|
for (unsigned i = 0; !res && i < TRANSFER_ITEMS; i++) {
|
|
Nova::Obj_crd obj_crd(sel + half * TRANSFER_ITEMS + i, 0);
|
|
|
|
if (!utcb->append_item(obj_crd, HOTSPOT, THIS_PD, NON_GUEST,
|
|
TRANSLATE))
|
|
res = 0xff;
|
|
}
|
|
if (res != Nova::NOVA_OK)
|
|
break;
|
|
|
|
/* trigger the translation */
|
|
res = Nova::call(cap.local_name());
|
|
}
|
|
|
|
/* restore original receive window */
|
|
utcb->crd_rcv = orig_crd;
|
|
|
|
if (res)
|
|
PERR("setting exception portals for vCPU failed %u", res);
|
|
}
|
|
#endif /* _INCLUDE__NOVA__UTIL_H_ */
|