> I believe it refers to the state of the lock prior to lock acquisition;
not prior to subtraction.
That definitely makes sense as a way to read this variable in context, but
after reviewing other usages of old_state in lwlock.c, I tend to think that
this is an outlier usage and maybe the naming w
On Wed, 2025-01-29 at 23:16 -0800, Jacob Brazeal wrote:
> Here the variable name "oldstate" leads one to believe that the value
> is fetched before the sub operation, similar to some other usages in
> lwlock.c.
I believe it refers to the state of the lock prior to lock acquisition;
not prior to su
Hello all,
In the LWLockRelease function, we have the following snippet:
*/**
* * Release my hold on lock, after that it can immediately be acquired by *
others, even if we still have to wakeup other waiters. */ if (mode ==
LW_EXCLUSIVE) oldstate = pg_atomic_sub_fetch_u32(&lock->state,
LW_V
