I treced down 'job' macro from tools/gdbinit and I found out it calls in the end https://source.chromium.org/chromium/chromium/src/+/main:v8/src/objects/objects.h;drc=a0dedabb214a245c792009e64baf333c7e8d7357;l=679
which is shortPrint. This still doesn't show me all level depths of an object but rather first levels of representation and their corresponding addresses. Do I have to manually go in these recursive depths or is there any better way like to Stringify it? I'm trying to Stringify this *value *object located in https://source.chromium.org/chromium/chromium/src/+/main:v8/src/ic/ic.cc;l=1847;bpv=1;bpt=0?q=ic.cc&ss=chromium%2Fchromium%2Fsrc:v8%2F but I have hard times converting it to a String On Fri, Nov 11, 2022 at 12:26 PM Jakob Kummerow <jkumme...@chromium.org> wrote: > Thanks! I found this StoreIC::Store() function just yesterday while >> debugging in D8 and it works even without (--nouse-ic flag), even though I >> have no clue what this flag does as I can't find it in docs. But this >> tracks all of the keys and objects created. > > > No, it won't catch all of them without the flag, but if it catches the > ones you care about, that's good enough. > > >> The main problem now is the following line of code in StoreIC::Store() >> function ( >> https://source.chromium.org/chromium/chromium/src/+/main:v8/src/ic/ic.cc;l=1847;bpv=1;bpt=0?q=ic.cc&ss=chromium%2Fchromium%2Fsrc:v8%2F >> ) >> >> When I cast this object (value) into JSObject and do shortPrint or >> PrintProperties() it doesn't take in account all properties if for example >> its recursive object like this test: {test1: { test2: "testhelloworld" } } >> but rather it prints just test and gives memory lolcation to test1. I can >> obviously recursively do this, but is there any prittier way of doing this >> like via some JSON stringify function? >> > > I'd just inspect objects manually, using the `job` macro from > tools/gdbinit. > > >> I found such JSON stringify function here >> https://source.chromium.org/chromium/chromium/src/+/main:v8/src/json/json-stringifier.h;bpv=1;bpt=0 >> but I have very hard trouble in passing arguments to this function and >> printing String out of it as it return MaybeHandle object. Any help here >> would be appreciated. >> > > Appending `.ToHandleChecked()` may be of use here (if the stringification > doesn't throw), but yeah, invoking such functions in GDB tends to not work. > > >> On Friday, November 11, 2022 at 11:47:33 AM UTC+1 Jakob Kummerow wrote: >> >>> Maps don't keep lists of the objects that use them. To find all objects >>> that use a given map, you'd have to walk the entire heap to find all >>> objects, and filter them by map. >>> >>> Considering your previous question, I'm not sure finding all objects >>> that use a given map will actually be helpful. A possible way to intercept >>> creation of properties with a given name (e.g. "mainkey") would be to run >>> with `--nouse-ic` and put a breakpoint on StoreIC::Store(). This is >>> (obviously?) not an officially supported feature, and I haven't tried it, >>> so you may encounter obstacles or limitations of the approach, but it might >>> at least get you a little further. >>> >>> I guess you'd need this in Chrome, not just d8, so the full workflow is: >>> - build a Debug build of Chrome. Be sure to set v8_optimized_debug = >>> false in args.gn beforehand. >>> - run with each renderer in a debugger: out/debug/chrome --no-sandbox >>> --disable-hang-monitor --disable-extensions --js-flags="--nouse-ic" >>> --renderer-cmd-prefix="xterm -e gdb -args" >>> - bring a large amount of patience to both of these steps, and have >>> enough RAM in your machine (64GB is good, dunno if 32GB is enough) >>> >>> Good luck! >>> >>> >>> On Wed, Nov 9, 2022 at 3:19 PM Filip Petronijevic <fpetronij...@raf.rs> >>> wrote: >>> >>>> Ok, I'll explain what problem I have and if there is any way of solving >>>> it. >>>> >>>> Imagine I have following Javascript code: >>>> >>>> var obj1= {} >>>> obj1["mainkey"] = {canvasComputed: "oewrewqioewrerqewjoijiqerw", >>>> todata: "somerandomdata"} >>>> >>>> var obj2= {} >>>> obj2["mainkey"] = "some big string" >>>> >>>> var obj3 = {} >>>> obj3['mainkey'] = {test: {test1:"somestring"}, test2: 3432} >>>> >>>> >>>> I have 3 objects, they all share same Map. My question is if I know >>>> what memory space this Map has, If I can use that to recursively find all >>>> property values of all objects that share that same Map? In this case to >>>> list obj1's property values (canvasComputed, toData), obj2 property values >>>> (1 string) and obj3 property values(test object along with string test2) >>>> ? >>>> >>>> Or the only way I can list own properties of these objects is if I know >>>> exact memory location of each of them? Is there any way I could traverse >>>> from their Map or something they share in common (only mainkey key) and use >>>> this fact to find all property values that hold mainkey as a key? >>>> >>>> >>>> When I do %DebugPrint(obj1) I can see its property values and that this >>>> object shares same map as other objects, but I'm trying to find a way to >>>> generalize this by starting from some common memory slot they all share and >>>> traverse up recursively or whatever to get all property values? >>>> >>>> Best regards >>>> >>>> -- >> -- >> 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. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/v8-users/e46c2e2e-f6ab-43d2-8682-7c7759f3fb04n%40googlegroups.com >> <https://groups.google.com/d/msgid/v8-users/e46c2e2e-f6ab-43d2-8682-7c7759f3fb04n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-users/CAKSzg3QUVAhOCtnbnUdhc5uZWtwdasern9o1M%3DYR-Y1SMXJ1RQ%40mail.gmail.com > <https://groups.google.com/d/msgid/v8-users/CAKSzg3QUVAhOCtnbnUdhc5uZWtwdasern9o1M%3DYR-Y1SMXJ1RQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- -- 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. 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