Hi!
9 февр. 2010, в 15:45, Michael Widenius написал(а):
[skip]
+ my_atomic_rwlock_wrlock(&soft_sync_rwl);
+ my_atomic_store32(&soft_sync_min, fileno);
+ my_atomic_store32(&soft_sync_max, fileno);
+ my_atomic_rwlock_wrunlock(&soft_sync_rwl);
Don't understand why my_atomic_rwlock_wrlock is enough protection
here.
Why use my_atomic_store32 ?
As I understood idea of atomic operation it is guaranted that we will
read consistent value (not one byte from one value and other one from
other). Yes I remember your statement that on modern 32bit system you
always get it consistent, then why we made atomic operations at all?
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