void _Timer_Routine_adaptor( Watchdog_Control *the_watchdog )
{
Timer_Control *the_timer;
Per_CPU_Control *cpu;
the_timer = RTEMS_CONTAINER_OF( the_watchdog, Timer_Control, Ticker );
cpu = _Watchdog_Get_CPU( &the_timer->Ticker );
the_timer->stop_time = _Timer_Get_CPU_ticks( cpu );
( *the_timer->routine )( the_timer->Object.id, the_timer->user_data );
}
unsigned int alarm(
unsigned int seconds
)
{
unsigned int remaining;
Watchdog_Control *the_watchdog;
ISR_lock_Context lock_context;
ISR_lock_Context lock_context2;
Per_CPU_Control *cpu;
uint64_t now;
uint32_t ticks_per_second;
uint32_t ticks;
the_watchdog = &_POSIX_signals_Alarm_watchdog;
ticks_per_second = TOD_TICKS_PER_SECOND;
ticks = seconds * ticks_per_second;
_ISR_lock_ISR_disable_and_acquire(
&_POSIX_signals_Alarm_lock,
&lock_context
);
cpu = _Watchdog_Get_CPU( the_watchdog );
_Watchdog_Per_CPU_acquire_critical( cpu, &lock_context2 );
now = cpu->Watchdog.ticks;
remaining = (unsigned long) _Watchdog_Cancel(
&cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],
the_watchdog,
now
);
if ( ticks != 0 ) {
cpu = _Per_CPU_Get();
_Watchdog_Set_CPU( the_watchdog, cpu );
_Watchdog_Insert(
&cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ],
the_watchdog,
now + ticks
);
}
_Watchdog_Per_CPU_release_critical( cpu, &lock_context2 );
_ISR_lock_Release_and_ISR_enable(
&_POSIX_signals_Alarm_lock,
&lock_context
);
return ( remaining + ticks_per_second - 1 ) / ticks_per_second;
}
