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Thank you for reply.
I have tried jdb. It's useful for my problem.
Process Explorer is not useful for my current problem, but it's a useful tool.
I've had jdk 6.0 installed.
Thank you all again.

I am writing java application on windows.
There are more than 100 threads run within java.exe.
I want to know what threads run within process java.exe so that I can find out if there are abnormal...

maybe you can use thread to instead.

see manpage setsockopt() and pay special attention to so_keepalive and tcp_keepalive or tcp_keepidle options. BTW, options are system specified.

I think you can do your job in another way.
Copy old file to a new location, after that empty the original file.
But there are chances of data loss, if the service writes log between copying...

I tried your code on my linux box , but i didn't get the error message you said above

Sivaswami, there is no /proc filesystem on hp-ux.

jim, i am working on hp-ux.
I have tried the getmntent system call.It works!
Let's close this thread.
Thanks again!

shamrock ,thank you very much!
The getmntent() system call is exactly what i want.

jim, thank you all the same for your concern!
I know how to get filesystem mounted and its usage by using shell...

shamrock ,thank you! your answer is very useful.
Now i want to get filesystems mounted on my hp-ux in c, how can i get it?

hi, everyone
Can anybody tell me how to get free blocks and total blocks of filesystem in c.
I am working on a hp-unix
Thanks in advance.