pd.if.org Git - liblfds/blob - liblfds/liblfds7.0.0/liblfds700/src/lfds700_queue/lfds700_queue_init.c

   1 /***** includes *****/
   2 #include "lfds700_queue_internal.h"
   3
   4
   5
   6
   7
   8 /****************************************************************************/
   9 void lfds700_queue_init_valid_on_current_logical_core( struct lfds700_queue_state *qs, struct lfds700_queue_element *qe_dummy, struct lfds700_misc_prng_state *ps, void *user_state )
  10 {
  11   LFDS700_PAL_ASSERT( qs != NULL );
  12   LFDS700_PAL_ASSERT( (lfds700_pal_uint_t) &qs->enqueue % LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES == 0 );
  13   LFDS700_PAL_ASSERT( (lfds700_pal_uint_t) &qs->dequeue % LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES == 0 );
  14   LFDS700_PAL_ASSERT( (lfds700_pal_uint_t) &qs->user_state % LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES == 0 );
  15   LFDS700_PAL_ASSERT( qe_dummy != NULL );
  16   LFDS700_PAL_ASSERT( (lfds700_pal_uint_t) qe_dummy->next % LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES == 0 );
  17   LFDS700_PAL_ASSERT( (lfds700_pal_uint_t) &qe_dummy->key % LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES == 0 );
  18   LFDS700_PAL_ASSERT( ps != NULL );
  19   // TRD : user_state can be UNLL
  20
  21   /* TRD : qe_dummy is a dummy element, needed for init
  22            the qs->enqueue and qs->dequeue counters do not need to be initialized
  23            but it does no harm to do so, and stops a valgrind complaint
  24   */
  25
  26   qs->enqueue[POINTER] = qe_dummy;
  27   qs->enqueue[COUNTER] = (struct lfds700_queue_element *) 0;
  28   qs->dequeue[POINTER] = qe_dummy;
  29   qs->dequeue[COUNTER] = (struct lfds700_queue_element *) 0;
  30
  31   qe_dummy->next[POINTER] = NULL;
  32   qe_dummy->next[COUNTER] = (struct lfds700_queue_element *) LFDS700_MISC_PRNG_GENERATE( ps );
  33   qe_dummy->value = NULL;
  34
  35   qs->user_state = user_state;
  36
  37   LFDS700_MISC_BARRIER_STORE;
  38
  39   lfds700_misc_force_store();
  40
  41   return;
  42 }
  43