source: rtems/cpukit/score/src/freechain.c @ c499856

4.115
Last change on this file since c499856 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: 978 bytes
Line 
1/**
2 * @file
3 *
4 * @ingroup ScoreFreechain
5 *
6 * @brief Freechain Handler Implementation
7 */
8
9/*
10 * Copyright (c) 2013 Gedare Bloom.
11 *
12 * The license and distribution terms for this file may be
13 * found in the file LICENSE in this distribution or at
14 * http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18  #include "config.h"
19#endif
20
21#include <rtems/score/freechain.h>
22#include <rtems/score/chainimpl.h>
23
24void _Freechain_Initialize(
25    Freechain_Control *freechain,
26    Freechain_Extend   extend
27)
28{
29  _Chain_Initialize_empty( &freechain->Freechain );
30  freechain->extend = extend;
31}
32
33void *_Freechain_Get(Freechain_Control *freechain)
34{
35  if ( _Chain_Is_empty( &freechain->Freechain ) ) {
36    if ( !( *freechain->extend )( freechain ) ) {
37      return NULL;
38    }
39  }
40
41  return _Chain_Get_first_unprotected( &freechain->Freechain );
42}
43
44void _Freechain_Put( Freechain_Control *freechain, void *node )
45{
46  _Chain_Prepend_unprotected( &freechain->Freechain, node );
47}
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