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/**
* @file
*
* @brief Thread-Specific Data Management
* @ingroup POSIXAPI
*/
/*
* Copyright (c) 2012 Zhongwei Yao.
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#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/score/rbtree.h>
#include <rtems/posix/keyimpl.h>
/*
* 17.1.2 Thread-Specific Data Management, P1003.1c/Draft 10, p. 165
*/
void *pthread_getspecific(
pthread_key_t key
)
{
POSIX_Keys_Control *the_key;
Objects_Locations location;
POSIX_Keys_Key_value_pair search_node;
RBTree_Node *p;
void *key_data;
POSIX_Keys_Key_value_pair *value_pair_p;
the_key = _POSIX_Keys_Get( key, &location );
switch ( location ) {
case OBJECTS_LOCAL:
search_node.key = key;
search_node.thread_id = _Thread_Executing->Object.id;
p = _RBTree_Find_unprotected( &_POSIX_Keys_Key_value_lookup_tree,
&search_node.Key_value_lookup_node );
key_data = NULL;
if ( p ) {
value_pair_p = _RBTree_Container_of( p,
POSIX_Keys_Key_value_pair,
Key_value_lookup_node );
/* key_data = _RBTree_Container_of( p, */
/* POSIX_Keys_Key_value_pair, */
/* Key_value_lookup_node )->value; */
key_data = value_pair_p->value;
}
_Objects_Put( &the_key->Object );
return key_data;
#if defined(RTEMS_MULTIPROCESSING)
case OBJECTS_REMOTE: /* should never happen */
#endif
case OBJECTS_ERROR:
break;
}
return NULL;
}
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