111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2010-10-26 Bernard the first version
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <pthread.h>
|
||
|
|
#include "pthread_internal.h"
|
||
|
|
|
||
|
|
_pthread_key_data_t _thread_keys[PTHREAD_KEY_MAX];
|
||
|
|
|
||
|
|
/* initialize key area */
|
||
|
|
static int pthread_key_system_init(void)
|
||
|
|
{
|
||
|
|
rt_memset(&_thread_keys[0], 0, sizeof(_thread_keys));
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
INIT_COMPONENT_EXPORT(pthread_key_system_init);
|
||
|
|
|
||
|
|
void *pthread_getspecific(pthread_key_t key)
|
||
|
|
{
|
||
|
|
struct _pthread_data* ptd;
|
||
|
|
|
||
|
|
if (rt_thread_self() == NULL) return NULL;
|
||
|
|
|
||
|
|
/* get pthread data from user data of thread */
|
||
|
|
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
|
||
|
|
RT_ASSERT(ptd != NULL);
|
||
|
|
|
||
|
|
if (ptd->tls == NULL)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
if ((key < PTHREAD_KEY_MAX) && (_thread_keys[key].is_used))
|
||
|
|
return ptd->tls[key];
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
RTM_EXPORT(pthread_getspecific);
|
||
|
|
|
||
|
|
int pthread_setspecific(pthread_key_t key, const void *value)
|
||
|
|
{
|
||
|
|
struct _pthread_data* ptd;
|
||
|
|
|
||
|
|
if (rt_thread_self() == NULL) return EINVAL;
|
||
|
|
|
||
|
|
/* get pthread data from user data of thread */
|
||
|
|
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
|
||
|
|
RT_ASSERT(ptd != NULL);
|
||
|
|
|
||
|
|
/* check tls area */
|
||
|
|
if (ptd->tls == NULL)
|
||
|
|
{
|
||
|
|
ptd->tls = (void**)rt_malloc(sizeof(void*) * PTHREAD_KEY_MAX);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((key < PTHREAD_KEY_MAX) && _thread_keys[key].is_used)
|
||
|
|
{
|
||
|
|
ptd->tls[key] = (void *)value;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return EINVAL;
|
||
|
|
}
|
||
|
|
RTM_EXPORT(pthread_setspecific);
|
||
|
|
|
||
|
|
int pthread_key_create(pthread_key_t *key, void (*destructor)(void*))
|
||
|
|
{
|
||
|
|
rt_uint32_t index;
|
||
|
|
|
||
|
|
rt_enter_critical();
|
||
|
|
for (index = 0; index < PTHREAD_KEY_MAX; index ++)
|
||
|
|
{
|
||
|
|
if (_thread_keys[index].is_used == 0)
|
||
|
|
{
|
||
|
|
_thread_keys[index].is_used = 1;
|
||
|
|
_thread_keys[index].destructor = destructor;
|
||
|
|
|
||
|
|
*key = index;
|
||
|
|
|
||
|
|
rt_exit_critical();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
rt_exit_critical();
|
||
|
|
|
||
|
|
return EAGAIN;
|
||
|
|
}
|
||
|
|
RTM_EXPORT(pthread_key_create);
|
||
|
|
|
||
|
|
int pthread_key_delete(pthread_key_t key)
|
||
|
|
{
|
||
|
|
if (key >= PTHREAD_KEY_MAX)
|
||
|
|
return EINVAL;
|
||
|
|
|
||
|
|
rt_enter_critical();
|
||
|
|
_thread_keys[key].is_used = 0;
|
||
|
|
_thread_keys[key].destructor = 0;
|
||
|
|
rt_exit_critical();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
RTM_EXPORT(pthread_key_delete);
|
||
|
|
|