Re: LWLock deadlock and gdb advice

On Mon, Jun 29, 2015 at 5:37 PM, Jeff Janes <jeff.janes@gmail.com> wrote:
> Is there a way to use gdb to figure out who holds the lock they are waiting
> for?

Have you considered building with LWLOCK_STATS defined, and LOCK_DEBUG
defined? That might do it.

Otherwise, I suggest dereferencing the "l" argument to
LWLockAcquireWithVar() or something -- set the frame to "3" in your
example backtrace, using "f 3". Then, "p *l". You'll get the tranche
id there, and so on.

-- 
Peter Geoghegan