108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
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/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2010-10-26 Bernard the first version
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*/
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#include <pthread.h>
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#include "pthread_internal.h"
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_pthread_key_data_t _thread_keys[PTHREAD_KEY_MAX];
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void pthread_key_system_init()
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{
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rt_memset(&_thread_keys[0], 0, sizeof(_thread_keys));
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}
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void *pthread_getspecific(pthread_key_t key)
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{
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struct _pthread_data* ptd;
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if (rt_thread_self() == NULL) return NULL;
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/* get pthread data from user data of thread */
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ptd = (_pthread_data_t *)rt_thread_self()->user_data;
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RT_ASSERT(ptd != NULL);
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if (ptd->tls == NULL)
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return NULL;
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if ((key < PTHREAD_KEY_MAX) && (_thread_keys[key].is_used))
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return ptd->tls[key];
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return NULL;
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}
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RTM_EXPORT(pthread_getspecific);
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int pthread_setspecific(pthread_key_t key, const void *value)
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{
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struct _pthread_data* ptd;
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if (rt_thread_self() == NULL) return EINVAL;
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/* get pthread data from user data of thread */
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ptd = (_pthread_data_t *)rt_thread_self()->user_data;
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RT_ASSERT(ptd != NULL);
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/* check tls area */
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if (ptd->tls == NULL)
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{
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ptd->tls = (void**)rt_malloc(sizeof(void*) * PTHREAD_KEY_MAX);
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}
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if ((key < PTHREAD_KEY_MAX) && _thread_keys[key].is_used)
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{
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ptd->tls[key] = (void *)value;
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return 0;
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}
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return EINVAL;
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}
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RTM_EXPORT(pthread_setspecific);
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int pthread_key_create(pthread_key_t *key, void (*destructor)(void*))
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{
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rt_uint32_t index;
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rt_enter_critical();
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for (index = 0; index < PTHREAD_KEY_MAX; index ++)
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{
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if (_thread_keys[index].is_used == 0)
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{
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_thread_keys[index].is_used = 1;
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_thread_keys[index].destructor = destructor;
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*key = index;
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rt_exit_critical();
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return 0;
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}
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}
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rt_exit_critical();
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return EAGAIN;
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}
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RTM_EXPORT(pthread_key_create);
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int pthread_key_delete(pthread_key_t key)
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{
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if (key >= PTHREAD_KEY_MAX)
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return EINVAL;
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rt_enter_critical();
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_thread_keys[key].is_used = 0;
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_thread_keys[key].destructor = 0;
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rt_exit_critical();
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return 0;
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}
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RTM_EXPORT(pthread_key_delete);
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