We allocate memory on put (malloc) and we free memory on remove (free).
我们在放入数据的时候分配内存(malloc)，移除数据的时候释放内存(free)。
To delete Shared memory, you need to call shared_memory_object: : remove.
要想删除共享内存，需要调用shared _ memory_object：remove。
Connect and turn on your camera. Remove the memory card.
连接和打开您的照相机，移出存储卡。
Connect and turn on your camera. Remove the memory card.
连接和打开您的照相机，移出存储卡。
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