在Linux下用户按ctrl + c时如何避免内存泄漏? [英] How to avoid memory leak when user press ctrl+c under linux?

问题描述

在用C和C ++编写的程序中，我将新建一个对象以完成任务，然后删除该对象.

In my program written with C and C++, I will new an object to fulfill the task, then delete the object.

在新对象之后但在删除对象之前，如果用户按 ctrl + c 中断该过程，将导致不调用delete并导致发生内存泄漏.

At the moment after new object but before delete object, if the user presses ctrl+c to break the process, that will cause delete not to be called and a memory leak occurs.

我应该怎么做才能避免这种情况?

What should I do to avoid this situation?

此外，如果操作系统回收了内存，那么打开的文件又如何呢?是由操作系统关闭它们还是应该手动关闭它们?

Also, if the memory was reclaimed by the OS, what about the opened files? Are they closed by the OS or should I close them manualy?

推荐答案

按 Ctrl C 将向进程发送SIGINT，默认情况下， -有序关闭，包括拆除内存管理器并释放所有分配的堆和堆栈.如果需要执行其他任务，则需要安装SIGINT处理程序并自己执行这些任务.

Pressing CtrlC will send a SIGINT to the process, which by default does a mostly-orderly shutdown, including tearing down the memory manager and releasing all allocated heap and stack. If you need to perform other tasks then you will need to install a SIGINT handler and perform those tasks yourself.

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