source: rtems/cpukit/score/src/freechain.c @ 21275b58

Last change on this file since 21275b58 was 21275b58, checked in by Sebastian Huber <sebastian.huber@…>, on Nov 22, 2018 at 6:14:51 PM

score: Static Objects_Information initialization

Statically allocate the objects information together with the initial
set of objects either via <rtems/confdefs.h>. Provide default object
informations with zero objects via librtemscpu.a. This greatly
simplifies the workspace size estimate. RTEMS applications which do not
use the unlimited objects option are easier to debug since all objects
reside now in statically allocated objects of the right types.

Close #3621.

  • Property mode set to 100644
File size: 1.2 KB
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/assert.h>
23
24void *_Freechain_Get(
25  Freechain_Control   *freechain,
26  Freechain_Allocator  allocator,
27  size_t               number_nodes_to_extend,
28  size_t               node_size
29)
30{
31  _Assert( node_size >= sizeof( Chain_Node ) );
32
33  if ( _Chain_Is_empty( &freechain->Free ) && number_nodes_to_extend > 0 ) {
34    void *starting_address;
35
36    starting_address = ( *allocator )( number_nodes_to_extend * node_size );
37    number_nodes_to_extend *= ( starting_address != NULL );
38
39    _Chain_Initialize(
40      &freechain->Free,
41      starting_address,
42      number_nodes_to_extend,
43      node_size
44    );
45  }
46
47  return _Chain_Get_unprotected( &freechain->Free );
48}
49
50void _Freechain_Put( Freechain_Control *freechain, void *node )
51{
52  if ( node != NULL ) {
53    _Chain_Initialize_node( node );
54    _Chain_Prepend_unprotected( &freechain->Free, node );
55  }
56}
Note: See TracBrowser for help on using the repository browser.