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GDB：如何找到已加载符号（msymbols，psymbols，符号）的内存总大小？

[英]GDB: How can I find the in-memory total size of loaded symbols (msymbols, psymbols, symbols)?

原文 2014-08-13 21:47:12 2 1 c++/ c/ gdb/ freebsd

Our dev environment is configured in such a way that when we run the debug version of our code, it breaks into gdb on a crash or ^C. 我们的开发环境的配置方式使我们在运行代码的调试版本时，在崩溃或^ C时会闯入gdb。 With some recent changes this is not happening anymore (exiting the program instead of breaking into gdb), and I'm suspecting the increase in symbols size is causing this issue. 通过最近的一些更改，这种情况不再发生（退出程序而不是进入gdb），并且我怀疑符号大小的增加会导致此问题。

Is there a way to find the sizes of msymbols, psymbols & symbols (memory consumption of symbols when they are loaded into the gdb session)? 有没有办法找到msymbols，psymbols和符号的大小（将符号加载到gdb会话中时的内存消耗）？

Also, is there a way to limit the memory used for symbols in gdb? 另外，有没有办法限制gdb中用于符号的内存？ Google mentions HP's version supports such feature - and with other versions the only way out is to disable shared lib symbols auto-load and load them on demand. Google提到HP的版本支持这种功能-对于其他版本，唯一的解决方法是禁用共享库符号自动加载并按需加载它们。 What would it take to have HP like support on, say FreeBSD? FreeBSD说，要获得HP支持就需要什么？

Thankyou. 谢谢。

1 个解决方案

There is no way to get that information directly. 无法直接获取该信息。 You could add it pretty easily, but I personally wouldn't bother. 您可以很轻松地添加它，但是我个人不会打扰。

Your report isn't really detailed enough to understand what is going on. 您的报告不够详细，不足以了解正在发生的情况。 However I tend to doubt the behavior you are seeing is caused by gdb's size. 但是我倾向于怀疑您看到的行为是由gdb的大小引起的。

You can disable automatic loading of shared library info using set auto-solib-add . 您可以使用set auto-solib-add禁用自动加载共享库信息。