C++ (Cpp) _CPU_SMP_Processor_event_receiveの例

コード例 #1

ファイル: percpustatewait.c プロジェクト: AlexShiLucky/rtems

bool _Per_CPU_State_wait_for_non_initial_state(
  uint32_t cpu_index,
  uint32_t timeout_in_ns
)
{
  const Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index );
  Per_CPU_State state = cpu->state;

  if ( timeout_in_ns > 0 ) {
    rtems_counter_ticks ticks =
      rtems_counter_nanoseconds_to_ticks( timeout_in_ns );
    rtems_counter_ticks a = rtems_counter_read();
    rtems_counter_ticks delta = 0;

    while ( ticks > delta && state == PER_CPU_STATE_INITIAL ) {
      rtems_counter_ticks b;

      _CPU_SMP_Processor_event_receive();
      state = cpu->state;

      ticks -= delta;

      b = rtems_counter_read();
      delta = rtems_counter_difference( b, a );
      a = b;
    }
  } else {
    while ( state == PER_CPU_STATE_INITIAL ) {
      _CPU_SMP_Processor_event_receive();
      state = cpu->state;
    }
  }

  return state != PER_CPU_STATE_INITIAL;
}

コード例 #2

 void _Per_CPU_Wait_for_state(
   const Per_CPU_Control *per_cpu,
   Per_CPU_State desired_state
 )
 {
   while ( per_cpu->state != desired_state ) {
     _CPU_SMP_Processor_event_receive();
   }
 }

コード例 #3

ファイル: init.c プロジェクト: goetzpf/rtems

static void wait_for_state(const test_context *ctx, test_state desired_state)
{
    while ( ctx->state != desired_state ) {
        _CPU_SMP_Processor_event_receive();
    }
}