[mythtv] [mythtv-commits] mythtv commit: r17970 by nigel
nigel at ind.tansu.com.au
Wed Jul 30 03:12:30 UTC 2008
>> bool DBUtil::isSchemaLocked(void)
> The blocking ability was used as a feature when I originally added the
> schemalock code. Rather than trying to devise our own cross-network
> mutex, we just let MySQL handle it via the table lock. It also
> prevented any race conditions in the upgrade code.
Yes, it is a tidy way to make upgrades safe.
I'm just concerned that having a frontend block
forever while a backend, say attempts to upgrade,
and crashes in the middle, is a little unfriendly.
Hence the desire for a non-blocking check.
Nigel Pearson, nigel at ind.tansu.com.au| All science is;
Telstra Net. Eng., Sydney, Australia | either Physics,
Office: 9202 3900 Fax: 9261 3912 | or stamp collecting!
Mobile: 0408 664435 Home: 9792 6998 | - Rutherford
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