个共享的内存缓冲区，并借此让两程序进行了通信。
附录：shmdatah
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def_SHMDATA_H_HEADERdefi
e_SHMDATA_H_HEADERdefi
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作为一个标志，非0：表示可读，0表示可写
fchartextTEXT_SZ记录写入和读取的文本e
difP1ci
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clude