如果满足一定条件，如何监控 GDB 中的变量并记录? [英] How to monitor variables in GDB and log it if it meets certain conditions?

问题描述

我想知道是否有任何方法可以监视变量的值，直到例如计数器达到一个值，然后在每个计数器值期间记录变量值的输出?

I would like to know if there is any way in which I can monitor a value of a variable until for example a counter reaches a value and then log the output of variable value during each counter value?

推荐答案

在计数器上设置观察点:

Set a watch point on the counter:

(gdb) watch var

并使该观察点有条件:

(gdb) cond <watchpoint_number> var>=value

如果要登录到文件:

(gdb) set logging file <filename>
(gdb) set logging on

默认情况下 gdb 记录到 gdb.txt

By default gdb logs to gdb.txt

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