On Thu, Mar 5, 2015 at 10:36 PM, Malek Musleh <malek.mus...@gmail.com> wrote:
> Which flags does --trace incorporate? > None. > Or in otherwords, where is the printfs coming from: > https://chromium.googlesource.com/v8/v8/+/master/src/runtime/runtime-test.cc#386 > I don't see trace as an option on the d8 help list, > I do: $ out/ia32.release/d8 --help | grep -- "--trace " --trace (trace function calls) but it does work: > > I see the function name "test" being printed out: (e.g.) > > 1: ~+51(this=0x24e1a20144b9 <JS Global Object>) { > > and the output of the function and its type as well: <String[2]: aa> > Yup, that's what it does. > My goal in with this is to determine the number of times a function for a > given set of arguments is called, and so if I can see where these traces > are being printed, I can maintain my own data structure in the same > location. > I would think that processing the raw log with an external script is easier, but that's obviously up to you... If you're only interested in one (or a few) specific function(s), even easier than that would be putting counters directly into its/their source. > program: > > function test( obj ) { > return obj.prop + obj.prop; > } > > var a = { prop: 'a' }, i = 0; > > while ( i++ < 10000 ) { > test( a ); > } > > output: > > 1: ~+27(this=0x24e1a2005009 <JS Global Object>) { > 2: ~ExtendStringPrototype+23(this=0x3d090ae04121 <undefined>) { > 2: } -> 0x3d090ae04121 <undefined> > 1: } -> 0x3d090ae04121 <undefined> > 1: ~+27(this=0x24e1a2005009 <JS Global Object>) { > 2: ~ExtendStringForTemplates+23(this=0x3d090ae04121 <undefined>) { > 2: } -> 0x3d090ae04121 <undefined> > 1: } -> 0x3d090ae04121 <undefined> > 1: ~+27(this=0x24e1a20144b9 <JS Global Object>) { > 2: ~ExtendStringPrototype+23(this=0x3d090ae04121 <undefined>) { > 2: } -> 0x3d090ae04121 <undefined> > 1: } -> 0x3d090ae04121 <undefined> > 1: ~+27(this=0x24e1a20144b9 <JS Global Object>) { > 2: ~ExtendStringForTemplates+23(this=0x3d090ae04121 <undefined>) { > 2: } -> 0x3d090ae04121 <undefined> > 1: } -> 0x3d090ae04121 <undefined> > 1: ~+51(this=0x24e1a20144b9 <JS Global Object>) { > 2: ~test+47(this=0x24e1a20144b9 <JS Global Object>, 0x24e1a2022469 <an > Object with map 0x3c6abe514231>) { > 2: } -> 0x24e1a20225b1 <String[2]: aa> > 2: ~test+47(this=0x24e1a20144b9 <JS Global Object>, 0x24e1a2022469 <an > Object with map 0x3c6abe > > > On Wednesday, March 4, 2015 at 2:47:37 PM UTC-5, Jakob Kummerow wrote: >> >> Try --trace. >> >> On Wed, Mar 4, 2015 at 8:12 PM, Malek Musleh <malek....@gmail.com> wrote: >> >>> Hi, >>> >>> >>> I want to be able trace / record a programs call to its functions (name >>> + argument values) either as a separate analysis pass or in addition to an >>> existing one (which ever is easier). I see that there is an an api for >>> printing/formatting the stack trace: prepareStackTrace in src/messages.js >>> but that is only called on internal errors. >>> >>> I think I shold be trying to call prepareStackTrace in order to get the >>> information I want, I am just not sure in which passes/source file would be >>> the best place to do so. >>> >>> >>> Thanks, >>> >>> Malek >>> >>> -- >>> -- >>> v8-users mailing list >>> v8-u...@googlegroups.com >>> http://groups.google.com/group/v8-users >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "v8-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to v8-users+u...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > -- > v8-users mailing list > v8-users@googlegroups.com > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
