another ? lock freezing

Hi all,

I found another(??) lock freezing phenomenon.
Seems I'm guilty for the bug.

session-1
begin;
lock table a in share mode;

session-2
begin;
lock table a;
[blocked]

session-3
begin;
lock table a in share mode;
[blocked]

session-2
^C
Cancel request sent
ERROR: Query cancel requested while waiting lock
abort;

session-1
commit;

Unfortunately LockReleaseAll() doesn't wake up session-3
and so session-3 is still blocked.

Either the cancel of session-2 or commit of session-1 must
wake up session-3. I would change the cancel request stuff
so that it can wake up sleeping processes.

Comments ?

Regards.

Hiroshi Inoue
Inoue(at)tpf(dot)co(dot)jp