C++ (Cpp) gomp_barrier_handle_tasks Examples

Example #1

File: bar.c Project: krichter722/gcc

bool
gomp_team_barrier_wait_cancel_end (gomp_barrier_t *bar,
				   gomp_barrier_state_t state)
{
  unsigned int generation, gen;

  if (__builtin_expect (state & BAR_WAS_LAST, 0))
    {
      /* Next time we'll be awaiting TOTAL threads again.  */
      /* BAR_CANCELLED should never be set in state here, because
	 cancellation means that at least one of the threads has been
	 cancelled, thus on a cancellable barrier we should never see
	 all threads to arrive.  */
      struct gomp_thread *thr = gomp_thread ();
      struct gomp_team *team = thr->ts.team;

      bar->awaited = bar->total;
      team->work_share_cancelled = 0;
      if (__builtin_expect (team->task_count, 0))
	{
	  gomp_barrier_handle_tasks (state);
	  state &= ~BAR_WAS_LAST;
	}
      else
	{
	  state += BAR_INCR - BAR_WAS_LAST;
	  __atomic_store_n (&bar->generation, state, MEMMODEL_RELEASE);
	  futex_wake ((int *) &bar->generation, INT_MAX);
	  return false;
	}
    }

  if (__builtin_expect (state & BAR_CANCELLED, 0))
    return true;

  generation = state;
  do
    {
      do_wait ((int *) &bar->generation, generation);
      gen = __atomic_load_n (&bar->generation, MEMMODEL_ACQUIRE);
      if (__builtin_expect (gen & BAR_CANCELLED, 0))
	return true;
      if (__builtin_expect (gen & BAR_TASK_PENDING, 0))
	{
	  gomp_barrier_handle_tasks (state);
	  gen = __atomic_load_n (&bar->generation, MEMMODEL_ACQUIRE);
	}
      generation |= gen & BAR_WAITING_FOR_TASK;
    }
  while (gen != state + BAR_INCR);

  return false;
}

Example #2

File: bar.c Project: krichter722/gcc

void
gomp_team_barrier_wait_end (gomp_barrier_t *bar, gomp_barrier_state_t state)
{
  unsigned int generation, gen;

  if (__builtin_expect (state & BAR_WAS_LAST, 0))
    {
      /* Next time we'll be awaiting TOTAL threads again.  */
      struct gomp_thread *thr = gomp_thread ();
      struct gomp_team *team = thr->ts.team;

      bar->awaited = bar->total;
      team->work_share_cancelled = 0;
      if (__builtin_expect (team->task_count, 0))
	{
	  gomp_barrier_handle_tasks (state);
	  state &= ~BAR_WAS_LAST;
	}
      else
	{
	  state &= ~BAR_CANCELLED;
	  state += BAR_INCR - BAR_WAS_LAST;
	  __atomic_store_n (&bar->generation, state, MEMMODEL_RELEASE);
	  futex_wake ((int *) &bar->generation, INT_MAX);
	  return;
	}
    }

  generation = state;
  state &= ~BAR_CANCELLED;
  do
    {
      do_wait ((int *) &bar->generation, generation);
      gen = __atomic_load_n (&bar->generation, MEMMODEL_ACQUIRE);
      if (__builtin_expect (gen & BAR_TASK_PENDING, 0))
	{
	  gomp_barrier_handle_tasks (state);
	  gen = __atomic_load_n (&bar->generation, MEMMODEL_ACQUIRE);
	}
      generation |= gen & BAR_WAITING_FOR_TASK;
    }
  while (gen != state + BAR_INCR);
}

Example #3

File: bar.c Project: MaddTheSane/haiku-buildtools

void
gomp_team_barrier_wait_end (gomp_barrier_t *bar, gomp_barrier_state_t state)
{
  unsigned int generation, gen;

  if (__builtin_expect ((state & 1) != 0, 0))
    {
      /* Next time we'll be awaiting TOTAL threads again.  */
      struct gomp_thread *thr = gomp_thread ();
      struct gomp_team *team = thr->ts.team;

      bar->awaited = bar->total;
      if (__builtin_expect (team->task_count, 0))
	{
	  gomp_barrier_handle_tasks (state);
	  state &= ~1;
	}
      else
	{
	  __atomic_store_n (&bar->generation, state + 3, MEMMODEL_RELEASE);
	  futex_wake ((int *) &bar->generation, INT_MAX);
	  return;
	}
    }

  generation = state;
  do
    {
      do_wait ((int *) &bar->generation, generation);
      gen = __atomic_load_n (&bar->generation, MEMMODEL_ACQUIRE);
      if (__builtin_expect (gen & 1, 0))
	{
	  gomp_barrier_handle_tasks (state);
	  gen = __atomic_load_n (&bar->generation, MEMMODEL_ACQUIRE);
	}
      if ((gen & 2) != 0)
	generation |= 2;
    }
  while (gen != state + 4);
}

Example #4

File: bar.c Project: fabio-d/xc16plusplus-source

void
gomp_team_barrier_wait_end (gomp_barrier_t *bar, gomp_barrier_state_t state)
{
    unsigned int generation;

    if (__builtin_expect ((state & 1) != 0, 0))
    {
        /* Next time we'll be awaiting TOTAL threads again.  */
        struct gomp_thread *thr = gomp_thread ();
        struct gomp_team *team = thr->ts.team;
        bar->awaited = bar->total;
        atomic_write_barrier ();
        if (__builtin_expect (team->task_count, 0))
        {
            gomp_barrier_handle_tasks (state);
            state &= ~1;
        }
        else
        {
            bar->generation = state + 3;
            futex_wake ((int *) &bar->generation, INT_MAX);
            return;
        }
    }

    generation = state;
    do
    {
        do_wait ((int *) &bar->generation, generation);
        if (__builtin_expect (bar->generation & 1, 0))
            gomp_barrier_handle_tasks (state);
        if ((bar->generation & 2))
            generation |= 2;
    }
    while (bar->generation != state + 4);
}