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Openai/6911cc4b-5d54-800b-88ae-dc7ac6ff2d3d
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=== Assistant: 哥们,我给你分析一下原因: === 哥们,我给你分析一下原因: ===== - exec() 系列函数会替换当前进程的代码和数据段,执行新程序。 ===== * 也就是说,一旦在父进程中直接调用 exec(),原来的父进程就会消失,后面的代码不会再执行。 ===== - 先用 fork() 创建一个 子进程。 ===== * 在子进程中调用 exec() 来运行新程序。 * 这样 父进程依然存在,可以继续执行后续代码,比如: - 管理其他子进程 - 等待子进程结束 - 处理用户输入或其他任务 ===== - 如果不 fork(),父进程会被 exec() 替换,无法继续执行。 ===== * fork() + exec() 模式实现了 并发或连续操作:子进程执行新程序,父进程继续原程序。 哥们,我可以帮你画一个简单流程图,把 fork() 和 exec() 的执行顺序可视化,看一眼就能明白父子进程的区别。你想要我画吗?
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