Exemplo n.º 1
0
void alock_lock(array_lock_t* local_lock) 
{
    lock_shared_t *lock = local_lock->shared_data;
    uint32_t slot = FAI_U32(&(lock->tail)) % lock->size;
    local_lock->my_index = slot;

    volatile uint16_t* flag = &lock->flags[slot].flag;
    while (*flag == 0)
    {
        PAUSE;
    }
}
Exemplo n.º 2
0
/* 
 * explicitely subscribe to the list of threads in order to used timestamps for GC
 */
void
ssmem_gc_thread_init(ssmem_allocator_t* a, int id)
{  
  a->ts = (ssmem_ts_t*) ssmem_ts_local;
  if (a->ts == NULL)
    {
      a->ts = (ssmem_ts_t*) memalign(CACHE_LINE_SIZE, sizeof(ssmem_ts_t));
      assert (a->ts != NULL);
      ssmem_ts_local = a->ts;

      a->ts->id = id;
      a->ts->version = 0;

      do
	{
	  a->ts->next = ssmem_ts_list;
	}
      while (CAS_U64((volatile uint64_t*) &ssmem_ts_list, 
		     (uint64_t) a->ts->next, (uint64_t) a->ts) 
	     != (uint64_t) a->ts->next);
  
       __attribute__ ((unused)) uint32_t null = FAI_U32(&ssmem_ts_list_len);
    }
}