利用/proc文件系统实现系统监视的两个问题

锋锋

调用外部工具'top",I/O重定向到自己的程序，如何？

（只是一个win平台下的思路，linux也一样吧？呵呵!)

nait

这固然也是一个替代的办法
我也想到过用popen结合df来做

但我的最终目的是要了解proc文件系统啊

kj501

Post by nait
辛辛苦苦跟踪了几个小时(数据结构好多啊，我快晕了)
最后出现

1. (gdb) next
   
2. Single stepping until exit from function gkrellm_init_plugin,
   
3. which has no line number information.
   
4. 0x40b33877 in ?? () from /usr/lib/gkrellm2/plugins/gkrellmms2.so
   
5. (gdb) next
   
6. Cannot find bounds of current function

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我彻底晕了

gkrellm2能不能静态编译？如果可以就这样做，以免受到gdb跟踪时受到动态库的影响。

nait

我试过静态编译
单没有gtk-X11的静态库
不能成功

nait

我试过静态编译
单没有gtk-X11的静态库
不能成功

nait

我刚strace了一下df
发现df没有用到/proc啊
不知道是怎么实现的

1. ]$ strace df 2>&1|grep open
   
2. open("/etc/ld.so.cache", O_RDONLY)      = 3
   
3. open("/lib/libc.so.6", O_RDONLY)        = 3
   
4. open("/dev/urandom", O_RDONLY)          = 3
   
5. open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
   
6. open("/usr/share/locale/locale.alias", O_RDONLY) = 3
   
7. open("/usr/lib/locale/en_US/LC_IDENTIFICATION", O_RDONLY) = 3
   
8. open("/usr/lib/locale/en_US/LC_MEASUREMENT", O_RDONLY) = 3
   
9. open("/usr/lib/locale/en_US/LC_TELEPHONE", O_RDONLY) = 3
   
10. open("/usr/lib/locale/en_US/LC_ADDRESS", O_RDONLY) = 3
    
11. open("/usr/lib/locale/en_US/LC_NAME", O_RDONLY) = 3
    
12. open("/usr/lib/locale/en_US/LC_PAPER", O_RDONLY) = 3
    
13. open("/usr/lib/locale/en_US/LC_MESSAGES", O_RDONLY) = 3
    
14. open("/usr/lib/locale/en_US/LC_MESSAGES/SYS_LC_MESSAGES", O_RDONLY) = 3
    
15. open("/usr/lib/locale/en_US/LC_MONETARY", O_RDONLY) = 3
    
16. open("/usr/lib/locale/en_US/LC_COLLATE", O_RDONLY) = 3
    
17. open("/usr/lib/locale/en_US/LC_TIME", O_RDONLY) = 3
    
18. open("/usr/lib/locale/en_US/LC_NUMERIC", O_RDONLY) = 3
    
19. open("/usr/lib/locale/zh_CN/LC_CTYPE", O_RDONLY) = 3
    
20. open("/etc/mtab", O_RDONLY)             = 3
    
21. open("/usr/share/locale/en_US/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
    
22. open("/usr/share/locale/en/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such file or directory)

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kj501

man statfs可以得到文件系统的有关信息。

nait

多谢斑竹
我现在就去看看：)

nait

我好笨啊
肉到嘴边了竟然还不知道：(