----- On Aug 1, 2022, at 10:44 AM, Norbert Lange via lttng-dev lttng-dev@lists.lttng.org wrote: [...] > > Any chance of not having to link liblttng-ust for the tracelog/tracef > functions, > like all other tracepoints (only hard dependency on liblttng-ust-tracepoint)? > My involvement is limited to "complain-only" for that one, but think of > how technically great that would be!
Here is how we could do this: 1) move the implementation of src/lib/lttng-ust/tracelog.c to its own .so, e.g. liblttng-ust-tracelog.so, 2) modify the tracelog/tracef public headers so they dlopen() this new .so from a library constructor, similarly to what tracepoint.h does. We'd need to make sure the symbols from tracelog.c are still emitted in liblttng-ust.so, _and_ have another version (with a prefix/suffix) emitted from liblttng-ust-tracelog.so, so we don't break ABI. Thoughts ? Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
