diff options
Diffstat (limited to 'cpukit/posix/src/key.c')
| -rw-r--r-- | cpukit/posix/src/key.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/cpukit/posix/src/key.c b/cpukit/posix/src/key.c deleted file mode 100644 index 1203343f66..0000000000 --- a/cpukit/posix/src/key.c +++ /dev/null @@ -1,262 +0,0 @@ -/* - * $Id$ - */ - -#include <errno.h> -#include <limits.h> -#include <pthread.h> -#include <string.h> - -#include <rtems/system.h> -#include <rtems/score/thread.h> -#include <rtems/score/wkspace.h> -#include <rtems/posix/key.h> - -/* - * _POSIX_Key_Manager_initialization - * - * DESCRIPTION: - * - * This routine performs the initialization necessary for this manager. - */ - -void _POSIX_Key_Manager_initialization( - unsigned32 maximum_keys -) -{ - _Objects_Initialize_information( - &_POSIX_Keys_Information, - OBJECTS_POSIX_KEYS, - FALSE, - maximum_keys, - sizeof( POSIX_Keys_Control ), - FALSE, - 0, - FALSE - ); -} - -/*PAGE - * - * 17.1.1 Thread-Specific Data Key Create, P1003.1c/Draft 10, p. 163 - */ - -int pthread_key_create( - pthread_key_t *key, - void (*destructor)( void * ) -) -{ - POSIX_Keys_Control *the_key; - void *table; - unsigned32 the_class; - unsigned32 bytes_to_allocate; - - - _Thread_Disable_dispatch(); - - the_key = _POSIX_Keys_Allocate(); - - if ( !the_key ) { - _Thread_Enable_dispatch(); - return EAGAIN; - } - - the_key->destructor = destructor; - - for ( the_class = OBJECTS_CLASSES_FIRST_THREAD_CLASS; - the_class <= OBJECTS_CLASSES_LAST_THREAD_CLASS; - the_class++ ) { - - bytes_to_allocate = - (_Objects_Information_table[ the_class ]->maximum + 1) * sizeof( void * ); - - table = _Workspace_Allocate( bytes_to_allocate ); - - if ( !table ) { - for ( --the_class; - the_class >= OBJECTS_CLASSES_FIRST_THREAD_CLASS; - the_class-- ) - _Workspace_Free( the_key->Values[ the_class ] ); - - _POSIX_Keys_Free( the_key ); - _Thread_Enable_dispatch(); - return ENOMEM; - } - - the_key->Values[ the_class ] = table; - memset( table, '\0', bytes_to_allocate ); - } - - the_key->is_active = TRUE; - - _Objects_Open( &_POSIX_Keys_Information, &the_key->Object, 0 ); - - *key = the_key->Object.id; - - _Thread_Enable_dispatch(); - - return 0; -} - -/*PAGE - * - * 17.1.2 Thread-Specific Data Management, P1003.1c/Draft 10, p. 165 - */ - -int pthread_setspecific( - pthread_key_t key, - const void *value -) -{ - register POSIX_Keys_Control *the_key; - unsigned32 index; - unsigned32 class; - Objects_Locations location; - - the_key = _POSIX_Keys_Get( key, &location ); - switch ( location ) { - case OBJECTS_ERROR: - case OBJECTS_REMOTE: /* should never happen */ - return EINVAL; - case OBJECTS_LOCAL: - index = _Objects_Get_index( _Thread_Executing->Object.id ); - class = _Objects_Get_class( _Thread_Executing->Object.id ); - the_key->Values[ class ][ index ] = (void *) value; - _Thread_Enable_dispatch(); - return 0; - } - return POSIX_BOTTOM_REACHED(); -} - -/*PAGE - * - * 17.1.2 Thread-Specific Data Management, P1003.1c/Draft 10, p. 165 - */ - -void *pthread_getspecific( - pthread_key_t key -) -{ - register POSIX_Keys_Control *the_key; - unsigned32 index; - unsigned32 class; - Objects_Locations location; - void *key_data; - - the_key = _POSIX_Keys_Get( key, &location ); - switch ( location ) { - case OBJECTS_ERROR: - case OBJECTS_REMOTE: /* should never happen */ - return NULL; - case OBJECTS_LOCAL: - index = _Objects_Get_index( _Thread_Executing->Object.id ); - class = _Objects_Get_class( _Thread_Executing->Object.id ); - key_data = (void *) the_key->Values[ class ][ index ]; - _Thread_Enable_dispatch(); - return key_data; - } - return (void *) POSIX_BOTTOM_REACHED(); -} - -/*PAGE - * - * 17.1.3 Thread-Specific Data Key Deletion, P1003.1c/Draft 10, p. 167 - */ - -int pthread_key_delete( - pthread_key_t key -) -{ - register POSIX_Keys_Control *the_key; - Objects_Locations location; - unsigned32 the_class; - - the_key = _POSIX_Keys_Get( key, &location ); - switch ( location ) { - case OBJECTS_ERROR: - case OBJECTS_REMOTE: /* should never happen */ - return EINVAL; - case OBJECTS_LOCAL: - _Objects_Close( &_POSIX_Keys_Information, &the_key->Object ); - - the_key->is_active = FALSE; - - for ( the_class = OBJECTS_CLASSES_FIRST_THREAD_CLASS; - the_class <= OBJECTS_CLASSES_LAST_THREAD_CLASS; - the_class++ ) - _Workspace_Free( the_key->Values[ the_class ] ); - - /* - * NOTE: The destructor is not called and it is the responsibility - * of the application to free the memory. - */ - - _POSIX_Keys_Free( the_key ); - _Thread_Enable_dispatch(); - return 0; - } - return POSIX_BOTTOM_REACHED(); -} - -/*PAGE - * - * _POSIX_Keys_Run_destructors - * - * 17.1.1 Thread-Specific Data Key Create, P1003.1c/Draft 10, p. 163 - * - * NOTE: This is the routine executed when a thread exits to - * run through all the keys and do the destructor action. - */ - -void _POSIX_Keys_Run_destructors( - Thread_Control *thread -) -{ - unsigned32 index; - unsigned32 pthread_index; - unsigned32 pthread_class; - unsigned32 iterations; - boolean are_all_null; - POSIX_Keys_Control *the_key; - void *value; - - pthread_index = _Objects_Get_index( thread->Object.id ); - pthread_class = _Objects_Get_class( thread->Object.id ); - - iterations = 0; - - for ( ; ; ) { - - are_all_null = TRUE; - - for ( index=1 ; index <= _POSIX_Keys_Information.maximum ; index++ ) { - - the_key = (POSIX_Keys_Control *) - _POSIX_Keys_Information.local_table[ index ]; - - if ( the_key && the_key->is_active && the_key->destructor ) { - value = the_key->Values[ pthread_class ][ pthread_index ]; - if ( value ) { - (*the_key->destructor)( value ); - if ( the_key->Values[ pthread_class ][ pthread_index ] ) - are_all_null = FALSE; - } - } - } - - if ( are_all_null == TRUE ) - return; - - iterations++; - - /* - * The standard allows one to not do this and thus go into an infinite - * loop. It seems rude to unnecessarily lock up a system. - * - * Reference: 17.1.1.2 P1003.1c/Draft 10, p. 163, line 99. - */ - - if ( iterations >= PTHREAD_DESTRUCTOR_ITERATIONS ) - return; - } -} |