tree ddd6de8440475d1b9bf205f95cdef2e9292681e5
parent b5684e00811fe3121a86ab3bbdae64c205968ae1
author Willy Tarreau <w@1wt.eu> 1430322827 +0200
committer Willy Tarreau <w@1wt.eu> 1430327724 +0200
encoding latin1

MEDIUM: pattern: add a revision to all pattern expressions

This will be used to detect any change on the pattern list between
two operations, ultimately making it possible to implement a cache
which immediately invalidates obsolete keys after an update. The
revision is simply taken from the timestamp counter to ensure that
even upon a pointer reuse we cannot accidently come back to the
same (expr,revision) tuple.