source: rtems/cpukit/posix/src/keycreate.c @ 12a191ae

4.104.11
Last change on this file since 12a191ae was 12a191ae, checked in by Joel Sherrill <joel.sherrill@…>, on Jul 22, 2009 at 12:09:31 AM

2009-07-21 Joel Sherrill <joel.sherrill@…>

  • posix/include/rtems/posix/key.h, posix/src/keycreate.c, posix/src/keydelete.c, posix/src/keyrundestructors.c: Restructure a bit to make it easier to do coverage analysis. Eliminate is_active member of control structure because it was redundant with very the key object was open or closed.
  • Property mode set to 100644
File size: 2.5 KB
Line 
1/*
2 *  COPYRIGHT (c) 1989-2007.
3 *  On-Line Applications Research Corporation (OAR).
4 *
5 *  The license and distribution terms for this file may be
6 *  found in the file LICENSE in this distribution or at
7 *  http://www.rtems.com/license/LICENSE.
8 *
9 *  $Id$
10 */
11
12#if HAVE_CONFIG_H
13#include "config.h"
14#endif
15
16#include <errno.h>
17#include <limits.h>
18#include <pthread.h>
19#include <string.h>
20
21#include <rtems/system.h>
22#include <rtems/score/thread.h>
23#include <rtems/score/wkspace.h>
24#include <rtems/posix/key.h>
25
26/*PAGE
27 *
28 *  17.1.1 Thread-Specific Data Key Create, P1003.1c/Draft 10, p. 163
29 */
30
31int pthread_key_create(
32  pthread_key_t  *key,
33  void          (*destructor)( void * )
34)
35{
36  POSIX_Keys_Control  *the_key;
37  void                *table;
38  uint32_t             the_api;
39  uint32_t             bytes_to_allocate;
40
41
42  _Thread_Disable_dispatch();
43
44  the_key = _POSIX_Keys_Allocate();
45
46  if ( !the_key ) {
47    _Thread_Enable_dispatch();
48    return EAGAIN;
49  }
50
51  the_key->destructor = destructor;
52
53  /*
54   *  This is a bit more complex than one might initially expect because
55   *  APIs are optional.  Thus there may be no ITRON tasks to have keys
56   *  for.  [NOTE: Currently RTEMS Classic API tasks are always enabled.]
57   */
58
59  for ( the_api = 1;
60        the_api <= OBJECTS_APIS_LAST;
61        the_api++ ) {
62
63    if ( _Objects_Information_table[ the_api ] ) {
64      #if defined(RTEMS_DEBUG)
65        /*
66         * Currently all managers are installed if the API is installed.
67         * This would be a horrible implementation error.
68         */
69        if (_Objects_Information_table[ the_api ][ 1 ] == NULL )
70          _Internal_error_Occurred(
71            INTERNAL_ERROR_CORE,
72            true,
73            INTERNAL_ERROR_IMPLEMENTATION_KEY_CREATE_INCONSISTENCY
74          );
75      #endif
76      bytes_to_allocate = sizeof( void * ) *
77        (_Objects_Information_table[ the_api ][ 1 ]->maximum + 1);
78      table = _Workspace_Allocate( bytes_to_allocate );
79      if ( !table ) {
80        for ( --the_api;
81              the_api >= 1;
82              the_api-- )
83          _Workspace_Free( the_key->Values[ the_api ] );
84
85        _POSIX_Keys_Free( the_key );
86        _Thread_Enable_dispatch();
87        return ENOMEM;
88      }
89
90      the_key->Values[ the_api ] = table;
91      memset( table, '\0', bytes_to_allocate );
92    } else {
93      the_key->Values[ the_api ] = NULL;
94    }
95
96
97  }
98
99  _Objects_Open_u32( &_POSIX_Keys_Information, &the_key->Object, 0 );
100
101  *key = the_key->Object.id;
102
103  _Thread_Enable_dispatch();
104
105  return 0;
106}
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