v3 of DB_RETRY_LOCK
David Bremner
david at tethera.net
Sat Jun 4 05:29:12 PDT 2016
[PATCH 1/4] Use the Xapian::DB_RETRY_LOCK flag when available
This is the original patch, rebased on master. I took the liberty of
converting the configure test to a test compile.
[PATCH 2/4] test: factor out some boilerplate from C tests
[PATCH 3/4] test: initial tests for locking retry
Add a simple test of locking retry.
[PATCH 4/4] lib: add built_with handling for XAPIAN_DB_RETRY_LOCK
Make it visible to the user whether their notmuch supports locking
retry (blocking open).
The remaining question for me is if we are happy with defaulting to
blocking (w/o timeout) on open. I'm not sure how you could deadlock
without writing C code, but it's pretty easy with fork. As I
discovered writing my test case.
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