tree d8d0206806fc245148ac7cf12ad3c8f7312f1d09
parent 3e6792232aa0ce3e650eaa03529c9eb2fe023ca9
author Jeff Brown <jeffbrown@google.com> 1332375845 -0700
committer Jeff Brown <jeffbrown@google.com> 1332378489 -0700

Throw if WAL enabled/disabled when connections are in use.

Changing WAL mode requires obtaining an exclusive lock on the
database and can only be done when there are NO other active
database connections.

Check that this is really the case, and bail with a useful
error message if an application attempts to change WAL mode while
transactions are in progress.

Expose disableWriteAheadLogging() in the API.

Change-Id: I87599de3b88c53dcd75677aefd72e40de216c2c1