[137] in Pthreads mailing list archive
Re: pthread.h : pthread_wait_data
daemon@ATHENA.MIT.EDU (sudhir halbhavi)
Mon Oct 9 12:37:04 1995
Date: Mon, 9 Oct 1995 11:00:17 -0500 (CDT)
From: sudhir halbhavi <halbhavi@eecs.ukans.edu>
To: "William S. Gribble" <grib@cs.utexas.edu>
Cc: pthreads@MIT.EDU
In-Reply-To: <199510091517.KAA04069@cascade.cs.utexas.edu>
On Mon, 9 Oct 1995, William S. Gribble wrote:
> From: sudhir halbhavi <halbhavi@eecs.ukans.edu>
> > (gdb) ls-t
> > Number of threads = 6
> > Thread_pointer = 0x16978 (92536), Thread_id = 1
.....
> > Thread_pointer = 0x17578 (95608), Thread_id = 6 ****
>
> OK -- how did you generate this output from gdb? This is *not*
> a standard feature of any gdb I know about, and it would make it
> much easier to debug pthreads codes!
This is from a debugger we are building here (I had sent a brief mail
about it before). It is still evolving. It has a tcl extension, which
allows the user to write scripts which gets executed when a specific
breakpoint is hit. This has proved to be a very powerful feature for data
enumeration, thread specific breakpoints and also with a little ingenuity
can be used to debug concurrency anamolies like data races, etc.
There is still work to be done. We will make the source public domain soon.
Sudhir
