Function rt_mp_free

src/mempool.c:373–407

* @brief This function will release a memory block. * * @param block the address of memory block to be released. */

 * @param block the address of memory block to be released.
 */
void rt_mp_free(void *block)
{
    rt_uint8_t **block_ptr;
    struct rt_mempool *mp;
    rt_base_t level;

    /* parameter check */
    if (block == RT_NULL) return;

    /* get the control block of pool which the block belongs to */
    block_ptr = (rt_uint8_t **)((rt_uint8_t *)block - sizeof(rt_uint8_t *));
    mp        = (struct rt_mempool *)*block_ptr;

    RT_OBJECT_HOOK_CALL(rt_mp_free_hook, (mp, block));

    level = rt_spin_lock_irqsave(&(mp->spinlock));

    /* increase the free block count */
    mp->block_free_count ++;

    /* link the block into the block list */
    *block_ptr = mp->block_list;
    mp->block_list = (rt_uint8_t *)block_ptr;

    if (rt_susp_list_dequeue(&mp->suspend_thread, RT_EOK))
    {
        rt_spin_unlock_irqrestore(&(mp->spinlock), level);

        /* do a schedule */
        rt_schedule();

        return;
    }
    rt_spin_unlock_irqrestore(&(mp->spinlock), level);
}
RTM_EXPORT(rt_mp_free);

/**@}*/