On 13/01/15 19:23, Hallvard Breien Furuseth wrote:

Yes, that didn't come out right. I don't mind inserting the volatile, but I don't know that it helps either. As far as I understand if it was broken without volatile, then it's still broken with it - just hopefully less likely to break. And LMDB couldn't be releaseed with your original unportable sync code along with the volatile.

Sorry, nevermind. Of course when the writer does sync well enough, volatile + the txn_renew loop will have to do for a sync primitive in the reader. I suppose this requires that sync in the writer thread will shake other threads as well, it won't be private to the writer.