如何使用gdb来探索栈/堆？ [英] how to use gdb to explore the stack/heap?

问题描述

任何人都可以请给我一个快速概述/指向我的方式来检查堆栈文件（和堆？）一个C程序？我想这应该GDB来完成，但是如果有其他更简单明了的选择，那么应该罚款为好。

Could anyone please give me a quick overview/point me to documentation of a way to inspect the stack (and heap?) of a C program? I thought this should be done with GDB, but if there are other more straighforward alternatives, then that should be fine as well.

感谢。

推荐答案

我的第一个方法来使用GDB调试是设置断点。这是像这样做 -

My first approach to using GDB for debugging is to setup breakpoints. This is done like so-

prompt> gdb ./x_bstree.c
(gdb) #prompt
(gdb) b 123 #break at line 123
(gdb) r #start program

现在你的程序停止在程序的123行。现在，您可以使用打印检查栈或堆变量。对于堆栈变量只使用打印＆LT;＆VARNAME GT; 。对于堆变量（指针）使用打印＆LT; * VARNAME＆GT; 。不知道有什么特别的用于检查堆栈/堆变量办？

Now your program halts at line 123 of your program. Now you can examine variables in stack or heap using print. For stack variables just use print <varname>. For heap variables (pointers) use print <*varname>. Not sure there is anything special to do for examining stack/heap variables?

当然，调试，你需要使它在单线程模式和运行放多线程应用程序;然后dubug否则就很难predict发生了什么。

Of course to debug multi-threaded applications you would need to make it run in single-threaded mode & then dubug Otherwise it becomes difficult to predict what's happening.

有关别的有一种 GDB ＆放大量的文档;许多网站也提供了 GDB小抄

For anything else there is extensive documentation of gdb & many sites also provide gdb cheat sheets

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