Hi, I've a PCRE compiled object in shared memory. As far as I read in PCRE documentation, multi-threading read access to the same PCRE object is 100% safe so theorically I don't need to use a lock when a Kamailio process access to this PCRE object (this would be done in a script function).
But I've also a MI command that recompile the PCRE object, so during the compilation a lock must exist. This requires "lock_get()" when a process tries to read the PCRE object. But this would cause that different processes couldn't read the PCRE in parallel, even if it's 100% safe. Anyway, if I get the desired behaviour it could occur that a process is reading the PCRE (so without "lock_get()") and at the same time the MI function modifies it, which could cause a segmentation fault. Any suggestion? Perhaps I should use "lock_get()" in each read access? It's the simplest solution, but what about performance? Thanks. -- Iñaki Baz Castillo _______________________________________________ Kamailio (OpenSER) - Devel mailing list [email protected] http://lists.kamailio.org/cgi-bin/mailman/listinfo/devel
