source: rtems/cpukit/posix/src/keycreate.c @ 63edcf24

4.104.114.84.95
Last change on this file since 63edcf24 was 63edcf24, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 2, 1999 at 6:40:30 PM

Split key.c into multiple files.

  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 *  $Id$
3 */
4
5#include <errno.h>
6#include <limits.h>
7#include <pthread.h>
8#include <string.h>
9
10#include <rtems/system.h>
11#include <rtems/score/thread.h>
12#include <rtems/score/wkspace.h>
13#include <rtems/posix/key.h>
14
15/*PAGE
16 *
17 *  17.1.1 Thread-Specific Data Key Create, P1003.1c/Draft 10, p. 163
18 */
19
20int pthread_key_create(
21  pthread_key_t  *key,
22  void          (*destructor)( void * )
23)
24{
25  POSIX_Keys_Control  *the_key;
26  void                *table;
27  unsigned32           the_class;
28  unsigned32           bytes_to_allocate;
29
30
31  _Thread_Disable_dispatch();
32 
33  the_key = _POSIX_Keys_Allocate();
34 
35  if ( !the_key ) {
36    _Thread_Enable_dispatch();
37    return EAGAIN;
38  }
39
40  the_key->destructor = destructor;
41
42  for ( the_class = OBJECTS_CLASSES_FIRST_THREAD_CLASS;
43        the_class <= OBJECTS_CLASSES_LAST_THREAD_CLASS;
44        the_class++ ) {
45
46    bytes_to_allocate =
47      (_Objects_Information_table[ the_class ]->maximum + 1) * sizeof( void * );
48
49    table = _Workspace_Allocate( bytes_to_allocate );
50
51    if ( !table ) {
52      for ( --the_class;
53            the_class >= OBJECTS_CLASSES_FIRST_THREAD_CLASS;
54            the_class-- )
55        _Workspace_Free( the_key->Values[ the_class ] );
56
57      _POSIX_Keys_Free( the_key );
58      _Thread_Enable_dispatch();
59      return ENOMEM;
60    }
61
62    the_key->Values[ the_class ] = table;
63    memset( table, '\0', bytes_to_allocate ); 
64  }
65
66  the_key->is_active = TRUE;
67
68  _Objects_Open( &_POSIX_Keys_Information, &the_key->Object, 0 );
69 
70  *key = the_key->Object.id;
71
72  _Thread_Enable_dispatch();
73
74  return 0;
75}
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