root/opal/class/opal_fifo.c

DEFINITIONS

1. opal_fifo_construct

   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
   2 /*
   3  * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
   4  *                         University Research and Technology
   5  *                         Corporation.  All rights reserved.
   6  * Copyright (c) 2004-2005 The University of Tennessee and The University
   7  *                         of Tennessee Research Foundation.  All rights
   8  *                         reserved.
   9  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
  10  *                         University of Stuttgart.  All rights reserved.
  11  * Copyright (c) 2004-2005 The Regents of the University of California.
  12  *                         All rights reserved.
  13  * Copyright (c) 2014-2018 Los Alamos National Security, LLC. All rights
  14  *                         reserved.
  15  * $COPYRIGHT$
  16  *
  17  * Additional copyrights may follow
  18  *
  19  * $HEADER$
  20  */
  21 
  22 #include "opal_config.h"
  23 #include "opal/class/opal_fifo.h"
  24 
  25 static void opal_fifo_construct (opal_fifo_t *fifo)
  26 {
  27     OBJ_CONSTRUCT(&fifo->opal_fifo_ghost, opal_list_item_t);
  28 
  29     fifo->opal_fifo_ghost.opal_list_next = &fifo->opal_fifo_ghost;
  30 
  31     /** used to protect against ABA problems when not using a 128-bit compare-and-set */
  32     fifo->opal_fifo_ghost.item_free = 0;
  33 
  34     fifo->opal_fifo_head.data.counter = 0;
  35     fifo->opal_fifo_head.data.item = (intptr_t) &fifo->opal_fifo_ghost;
  36 
  37     fifo->opal_fifo_tail.data.counter = 0;
  38     fifo->opal_fifo_tail.data.item = (intptr_t) &fifo->opal_fifo_ghost;
  39 }
  40 
  41 OBJ_CLASS_INSTANCE(opal_fifo_t, opal_object_t, opal_fifo_construct, NULL);