source: rtems/cpukit/include/rtems/rtems/regionimpl.h @ 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: 2.9 KB
Line 
1/**
2 * @file
3 *
4 * @ingroup ClassicRegionImpl
5 *
6 * @brief Classic Region Manager Implementation
7 */
8
9/* COPYRIGHT (c) 1989-2008.
10 * On-Line Applications Research Corporation (OAR).
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#ifndef _RTEMS_RTEMS_REGIONIMPL_H
18#define _RTEMS_RTEMS_REGIONIMPL_H
19
20#include <rtems/rtems/regiondata.h>
21#include <rtems/score/apimutex.h>
22#include <rtems/score/heapimpl.h>
23#include <rtems/score/objectimpl.h>
24#include <rtems/score/threadqimpl.h>
25
26#ifdef __cplusplus
27extern "C" {
28#endif
29
30/**
31 * @defgroup ClassicRegionImpl Classic Region Manager Implementation
32 *
33 * @ingroup ClassicRegion
34 *
35 * @{
36 */
37
38#define REGION_OF_THREAD_QUEUE_QUEUE( queue ) \
39  RTEMS_CONTAINER_OF( queue, Region_Control, Wait_queue.Queue )
40
41/**
42 *  @brief Region_Allocate
43 *
44 *  This function allocates a region control block from
45 *  the inactive chain of free region control blocks.
46 */
47RTEMS_INLINE_ROUTINE Region_Control *_Region_Allocate( void )
48{
49  return (Region_Control *) _Objects_Allocate( &_Region_Information );
50}
51
52/**
53 *  @brief Region_Free
54 *
55 *  This routine frees a region control block to the
56 *  inactive chain of free region control blocks.
57 */
58RTEMS_INLINE_ROUTINE void _Region_Free (
59  Region_Control *the_region
60)
61{
62  _Thread_queue_Destroy( &the_region->Wait_queue );
63  _Objects_Free( &_Region_Information, &the_region->Object );
64}
65
66RTEMS_INLINE_ROUTINE Region_Control *_Region_Get_and_lock( Objects_Id id )
67{
68  Region_Control *the_region;
69
70  _RTEMS_Lock_allocator();
71
72  the_region = (Region_Control *)
73    _Objects_Get_no_protection( id, &_Region_Information );
74
75  if ( the_region != NULL ) {
76    /* Keep allocator lock */
77    return the_region;
78  }
79
80  _RTEMS_Unlock_allocator();
81  return NULL;
82}
83
84RTEMS_INLINE_ROUTINE void _Region_Unlock( Region_Control *the_region )
85{
86  (void) the_region;
87  _RTEMS_Unlock_allocator();
88}
89
90/**
91 *  @brief Region_Allocate_segment
92 *
93 *  This function attempts to allocate a segment from the_region.
94 *  If successful, it returns the address of the allocated segment.
95 *  Otherwise, it returns NULL.
96 */
97RTEMS_INLINE_ROUTINE void *_Region_Allocate_segment (
98  Region_Control *the_region,
99  uintptr_t       size
100)
101{
102  return _Heap_Allocate( &the_region->Memory, size );
103}
104
105/**
106 *  @brief Region_Free_segment
107 *
108 *  This function frees the_segment to the_region.
109 */
110RTEMS_INLINE_ROUTINE bool _Region_Free_segment (
111  Region_Control *the_region,
112  void           *the_segment
113)
114{
115  return _Heap_Free( &the_region->Memory, the_segment );
116}
117
118/**
119 *  @brief Process Region Queue
120 *
121 *  This is a helper routine which is invoked any time memory is
122 *  freed.  It looks at the set of waiting tasks and attempts to
123 *  satisfy all outstanding requests.
124 *
125 *  @param[in] the_region is the the region
126 */
127extern void _Region_Process_queue(Region_Control *the_region);
128
129/**@}*/
130
131#ifdef __cplusplus
132}
133#endif
134
135#endif
136/* end of include file */
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