Getting list of held lwlocks from debugger
Is there an easy way to get a list of held lwlocks out of gdb attached to a
core dump (or for that matter attached to a live process)?
I can try manually walking the internal data structure, but I am hoping for
something analogous to the way you get memory contexts:
(gdb) p MemoryContextStats(TopMemoryContext)
Cheers,
Jeff
Jeff Janes <jeff.janes@gmail.com> writes:
Is there an easy way to get a list of held lwlocks out of gdb attached to a
core dump (or for that matter attached to a live process)?
There's the held_lwlocks array in lwlock.c, but that will just give you
pointers. What I imagine you're wishing for is some symbolic display
of which locks they are, and I see no code for that.
The "lock tranche" infrastructure that Robert's been working on would
allow for reasonably decent printout, but it's not complete yet ...
regards, tom lane
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