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Openai/691b01b4-1b64-800b-992e-192d846b72fe
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====== 4. 管道(Pipes) ====== * '''管道的作用''':用于连接两个进程,将一个进程的输出连接到另一个进程的输入,从而实现父子进程间的实时数据通信 。 * '''pipe(int fd[2]) 函数''':创建一个管道,并返回两个文件描述符 : * fd[0]:管道的'''读取端''' 。 * fd[1]:管道的'''写入端''' 。 * '''父子进程连接管道''': * '''子进程''':关闭读取端 fd[0],将标准输出(1号描述符)重定向到写入端 fd[1] 。 * '''父进程''':关闭写入端 fd[1],将标准输入(0号描述符)重定向到读取端 fd[0] 。 * '''性质''':管道是单向通信的,通常在存储器中实现 。
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