Or if there’s just one operation you need to do in the background, you can use
just one CBLManager but tell it to run an operation on the shared background
thread:
/** Asynchronously dispatches a block to run on a background thread. The block
will be given a
CBLDatabase instance to use; <em>it must use that database instead of any
CBL objects that are
in use on the surrounding code's thread.</em> Otherwise thread-safety will
be violated, and
Really Bad Things that are intermittent and hard to debug can happen.
(Note: Unlike most of the API, this method is thread-safe.) */
- (void) backgroundTellDatabaseNamed: (NSString*)dbName to: (void
(^)(CBLDatabase*))block;
The only caveat is that this runs on the same thread as replication and
asynchronous queries, so it will block progress on those till it completes.
—Jens
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