source: rtems/cpukit/score/src/chain.c @ 439c494

4.115
Last change on this file since 439c494 was c499856, checked in by Chris Johns <chrisj@…>, on 03/20/14 at 21:10:47

Change all references of rtems.com to rtems.org.

  • Property mode set to 100644
File size: 1.1 KB
Line 
1/**
2 * @file
3 *
4 * @brief Initialize a Chain Header
5 *
6 * @ingroup ScoreChain
7 */
8
9/*
10 *  COPYRIGHT (c) 1989-2007.
11 *  On-Line Applications Research Corporation (OAR).
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.org/license/LICENSE.
16 */
17
18#if HAVE_CONFIG_H
19#include "config.h"
20#endif
21
22#include <rtems/system.h>
23#include <rtems/score/address.h>
24#include <rtems/score/chainimpl.h>
25#include <rtems/score/isr.h>
26
27void _Chain_Initialize(
28  Chain_Control *the_chain,
29  void           *starting_address,
30  size_t         number_nodes,
31  size_t         node_size
32)
33{
34  size_t count = number_nodes;
35  Chain_Node *head = _Chain_Head( the_chain );
36  Chain_Node *tail = _Chain_Tail( the_chain );
37  Chain_Node *current = head;
38  Chain_Node *next = starting_address;
39
40  head->previous = NULL;
41
42  while ( count-- ) {
43    current->next  = next;
44    next->previous = current;
45    current        = next;
46    next           = (Chain_Node *)
47                        _Addresses_Add_offset( (void *) next, node_size );
48  }
49
50  current->next = tail;
51  tail->previous = current;
52}
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