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/**
* @file
*
* @brief Set Specific Key
* @ingroup POSIXAPI
*/
/*
* Copyright (c) 2012 Zhongwei Yao.
* COPYRIGHT (c) 1989-2014.
* On-Line Applications Research Corporation (OAR).
* Copyright (c) 2016 embedded brains GmbH.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/posix/keyimpl.h>
#include <errno.h>
static int _POSIX_Keys_Set_value(
POSIX_Keys_Key_value_pair *key_value_pair,
const void *value
)
{
key_value_pair->value = RTEMS_DECONST( void *, value );
return 0;
}
static int _POSIX_Keys_Create_value(
pthread_key_t key,
const void *value,
Thread_Control *executing
)
{
POSIX_Keys_Control *the_key;
int eno;
_Objects_Allocator_lock();
the_key = _POSIX_Keys_Get( key );
if ( the_key != NULL ) {
POSIX_Keys_Key_value_pair *key_value_pair;
key_value_pair = _POSIX_Keys_Key_value_allocate();
if ( key_value_pair != NULL ) {
ISR_lock_Context lock_context;
key_value_pair->key = key;
key_value_pair->thread = executing;
key_value_pair->value = RTEMS_DECONST( void *, value );
_RBTree_Initialize_node( &key_value_pair->Lookup_node );
_Chain_Initialize_node( &key_value_pair->Key_node );
_Chain_Append_unprotected(
&the_key->Key_value_pairs,
&key_value_pair->Key_node
);
_POSIX_Keys_Key_value_acquire( executing, &lock_context );
_POSIX_Keys_Key_value_insert( key, key_value_pair, executing );
_POSIX_Keys_Key_value_release( executing, &lock_context );
eno = 0;
} else {
eno = ENOMEM;
}
} else {
eno = EINVAL;
}
_Objects_Allocator_unlock();
return eno;
}
static int _POSIX_Keys_Delete_value(
pthread_key_t key,
Thread_Control *executing
)
{
POSIX_Keys_Control *the_key;
int eno;
_Objects_Allocator_lock();
the_key = _POSIX_Keys_Get( key );
if ( the_key != NULL ) {
POSIX_Keys_Key_value_pair *key_value_pair;
ISR_lock_Context lock_context;
_POSIX_Keys_Key_value_acquire( executing, &lock_context );
key_value_pair = _POSIX_Keys_Key_value_find( key, executing );
if ( key_value_pair != NULL ) {
_RBTree_Extract(
&executing->Keys.Key_value_pairs,
&key_value_pair->Lookup_node
);
_POSIX_Keys_Key_value_release( executing, &lock_context );
_POSIX_Keys_Key_value_free( key_value_pair );
} else {
_POSIX_Keys_Key_value_release( executing, &lock_context );
}
eno = 0;
} else {
eno = EINVAL;
}
_Objects_Allocator_unlock();
return eno;
}
/*
* 17.1.2 Thread-Specific Data Management, P1003.1c/Draft 10, p. 165
*/
int pthread_setspecific(
pthread_key_t key,
const void *value
)
{
Thread_Control *executing;
int eno;
executing = _Thread_Get_executing();
if ( value != NULL ) {
ISR_lock_Context lock_context;
POSIX_Keys_Key_value_pair *key_value_pair;
_POSIX_Keys_Key_value_acquire( executing, &lock_context );
key_value_pair = _POSIX_Keys_Key_value_find( key, executing );
if ( key_value_pair != NULL ) {
eno = _POSIX_Keys_Set_value( key_value_pair, value );
_POSIX_Keys_Key_value_release( executing, &lock_context );
} else {
_POSIX_Keys_Key_value_release( executing, &lock_context );
eno = _POSIX_Keys_Create_value( key, value, executing );
}
} else {
eno = _POSIX_Keys_Delete_value( key, executing );
}
return eno;
}
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