Function pthread_key_create

components/libc/posix/pthreads/pthread_tls.c:156–179

* @brief Creates a thread-specific data key. * * This function allocates a unique key for thread-specific data (TSD). * Each thread can use this key to access its own specific data associated with it. * * @param[out] key * A pointer to a variable where the newly created key will be stored. * On success, `*key` will hold the newly allocated key. * @param[in] destructor * An opt

 * @see pthread_setspecific(), pthread_getspecific(), pthread_key_delete()
 */
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);

/**