rr works just fine with multiple processes. Once you have a recording you can use `rr ps` to show all the process that were recorded and `rr replay -p <pid>` to attach to a particular process. You can combine -p with -g as Cameron mentioned to jump to a particular point in a particular process' lifetime.
On Tue, Aug 29, 2017 at 9:12 AM, Cameron McCormack <c...@mcc.id.au> wrote: > On Tue, Aug 29, 2017, at 08:58 PM, Emilio Cobos Álvarez wrote: >> I didn't find any obvious docs in either the rr wiki[1] or MDN, so I >> thought I'd ask before I actually need it. >> >> What is the best/easiest way to debug Firefox multi-process using rr? >> >> Right now I just disable e10s, but that's probably not a great long-term >> solution... > > I do that too. :-) > > Mine is probably not the most efficient method, but most of the time I > record with -M, and use output lines (either turning on logging, like > RUST_LOG=debug, or adding printfs showing details of documents/elements) > to orient myself when debugging. Doing a "rr replay -g <nnnn>" for a > particular output line will break in the process that printed out that > line. (I've never had to debug something under rr that involves the > interaction between processes.) > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
