如何告诉valgrind memcheck分支进程？ [英] How do I tell valgrind to memcheck forked processes?

问题描述

我有一个进程 x ，我想用 valgrind 检查泄漏。问题是 x 由 y 和 y 依次由 z 运行。我不能运行 x 独立，因为 y 和 z 设置 x 的环境，例如环境变量，命令行开关， x 所需的文件等。

I have a process x that I want to check for leaks with valgrind. The problem is that x is run by y, and y in turn is run by z. I can't run x standalone because y and z setup the environment for x, such as environment variables, command line switches, files needed by x etc.

1. 是否有任何方法可以告诉 valgrind 在 z 但是跟随它找到的任何叉子并报告它们吗？


2. 有任何方法我可以告诉 valgrind 跟随任何叉，但只报告名为 x ？


3. 有没有什么办法可以告诉 valgrind 来附加到已经运行的进程，我可以用gdb做什么？ li>
   

1. Is there any way I can tell valgrind to run on z but to follow any forks it finds and report them too?
2. Is there any way I can tell valgrind to follow any forks but only report on the process named x?
3. Is there any way I can tell valgrind to attach to already-running process, the way I can do with gdb?

我不知道这是否重要，但我运行在Suse64 linux和valgrind-2.4.0下。

I don't know if this matters, but I'm running under Suse64 linux and valgrind-2.4.0.

感谢！

推荐答案

1. Valgrind遵循分叉进程 - trace-children = yes 选项。


2. 您应该可以通过使用合适的过滤器来实现此目的。


3. 否。 Valgrind使用LD_PRELOAD挂钩到模块加载代码中，因此无法附加到正在运行的进程。

1. Valgrind follows forked processes when given the --trace-children=yes option.
2. You should be able to achieve this by using suitable filters.
3. No. Valgrind hooks into the module loading code using LD_PRELOAD, so attaching to a running process is not possible.

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