Function _pthread_get_data

components/libc/posix/pthreads/pthread.c:42–55

* @brief Retrieves the private data structure of a specified thread * * This function locates and validates the thread-private data structure associated with the given thread ID. * It uses a spinlock to synchronize access to the global thread table, ensuring data consistency in multithreaded environments. * A magic number validation is performed before returning to guarantee structural integ

 *   - Internal interface typically used by other POSIX thread library functions
 */
_pthread_data_t *_pthread_get_data(pthread_t thread)
{
    _pthread_data_t *ptd;

    if (thread >= PTHREAD_NUM_MAX) return NULL;

    rt_hw_spin_lock(&pth_lock);
    ptd = pth_table[thread];
    rt_hw_spin_unlock(&pth_lock);

    if (ptd && ptd->magic == PTHREAD_MAGIC) return ptd;

    return NULL;
}

/**
 * @brief Get the index position of a thread data in the global thread table