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Zdd� ZG dd� d�ZdZG dd� d�ZdS )z�Provides shared memory for direct access across processes.
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As a resource for sharing data across processes, shared memory blocks
may outlive the original process that created them. When one process
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�zSharedMemory.closec C s0 t r| jrt�| j� t�| jd� dS dS dS )z�Requests that the underlying shared memory block be destroyed.
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