On 06/23/2014 05:38 PM, Amit Kapila wrote:
While looking at function LWLockWaitForVar(), espacially below
code:
TRACE_POSTGRESQL_LWLOCK_ACQUIRE(T_NAME(l), T_ID(l), LW_EXCLUSIVE);
I think in this function tracing is done considering the Exclusive lock
is acquired, however it might have granted access because of
variable updation. Basically this function's trace doesn't distinguish
whether the access is granted due to the reason that there is no other
exclusive locker or variable is updated.
Yeah. Not sure it's worth it to add new TRACE points for this, I'm not
really familiar with the way the traces work or how people use them.
- Heikki
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