Thanks for responding, Han-Wen. Onwards! -d > On Mar 30, 2016, at 11:15 AM, Han-Wen Nienhuys <[email protected]> wrote: > > You can call ly_display_scm from within the debugger. > > You can get at the music objects from within the .ly file, eg. > > #(ly:display obj) > > getting into a REPL is tricky. > > On Wed, Mar 30, 2016 at 6:12 PM, Redwood (Daniel) > <[email protected]> wrote: >> [I’m attempting to improve the midi output from the c++ code…] >> >> Still getting oriented. Here’s what I need help with: >> >> 1) getting the guile REPL to start when the midi performer begins, so I can >> inspect the music objects (not the engraver objects). >> I’ve gotten the REPL to start after lilypond begins, but here’s what I’m >> currently getting >> >> Parsing...guile> (set-current-module lilypond-module) >> #<directory (guile-user) b4f36e00> >> >> Then I’m not sure what to do? I try this: >> >> (,locals) >> standard input:2:2: In expression (unquote locals): >> standard input:2:2: Unbound variable: unquote >> ABORT: (unbound-variable) >> >> 2) I try debugging from within C++ >> >> (gdb) b Performance::output >> Breakpoint 1 at 0x82d6750: file performance.cc, line 72. >> (gdb) r dant.ly >> […] >> Breakpoint 1, Performance::output (this=0x87a74f0, midi_stream=..., >> performance_name="") at performance.cc:72 >> (gdb) p *this >> $1 = {<Music_output> = {<Smob<Music_output>> = {<Smob_core> = { >> self_scm_ = 0xb2915d30}, <Smob_base<Music_output>> = { >> static smob_tag_ = 14975, static scm_init_ = {static list_ = >> 0x84c3edc <Smob_base<Scale>::scm_init_>, fun_ = 0x80e12b0 >> <Smob_base<Music_output>::init()>, >> next_ = 0x84bd090 <Smob_base<Paper_outputter>::scm_init_>}, >> static smob_name_ = "Music_output"}, protection_cons_ = 0x404}, >> _vptr.Music_output = 0x83cc308 <vtable for Performance+8>, >> static type_p_name_ = "ly:music-output?"}, >> audio_staffs_ = std::vector of length 2, capacity 2 = {0x87a6a18, >> 0x87a6c88}, audio_elements_ = std::vector of length 18, capacity 32 = { >> 0x87a6a18, 0x865a798, 0x865a7b0, 0x865a900, 0x865c3b0, 0x865c4b0, >> 0x865c4f0, 0x865a8e8, 0x87a4838, 0x87a6cf8, 0x87a6c88, 0x865caf0, >> 0x865cd38, 0x865c910, 0x865c700, 0x865c788, 0x865ce30, 0x865c660}, midi_ = >> 0x87a4ff0, ports_ = false, header_ = 0x404} >> >> My guess is that most of these raw numbers are actually scheme objects, >> which I don’t know how to debug. >> >> Advice would be appreciated. >> >> -d >> >> _______________________________________________ >> lilypond-devel mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/lilypond-devel > > > > -- > Han-Wen Nienhuys - [email protected] - http://www.xs4all.nl/~hanwen
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