Yeah thank you ! i'm going to dig it all ! 2018-08-21 10:55 GMT+02:00 Leszek Swirski <lesz...@chromium.org>:
> Hi dan, > > Glad to hear things are working for you. The functions you're looking at > are intrinsic/runtime functions, and that syntax is the "natives" syntax, > enabled for user code with the "--allow-natives-syntax" flag. Some people > have used this in the past to e.g. track optimisation behaviour, like this > (no longer in-date) documentation from bluebird > <https://github.com/petkaantonov/bluebird/wiki/Optimization-killers#1-tooling> > . > > Those functions are found in C++, not in Javascript, as they are runtime > calls. They are declared in src/runtime/runtime.h, where you can also find > the documentation of the %Foo and %_Foo syntax. The definitions are in the > .cc files under src/runtime, prefixed with "Runtime_" -- e.g. %GetArrayKeys > is defined in runtime-array.cc > <https://cs.chromium.org/chromium/src/v8/src/runtime/runtime-array.cc?l=455&rcl=a3d09098655de3c43eec029fec2a766d63f36caf> > (btw, > https://cs.chromium.org/ is a great way of browsing the code). Similarly > you can find the C++ definition of %IsSmi by searching for Runtime_IsSmi > <https://cs.chromium.org/search/?q=Runtime_IsSmi>. > > %_IsSmi, with the underscore, is an inlined intrinsic (specifically, an > intrinsic that *can* be inlined by the compiler). In the interpreter, for > example, this is in the supported intrinsics list > <https://cs.chromium.org/chromium/src/v8/src/interpreter/interpreter-intrinsics.h?l=16&rcl=a3d09098655de3c43eec029fec2a766d63f36caf>, > so we output an InvokeIntrinsic bytecode > <https://cs.chromium.org/chromium/src/v8/src/interpreter/bytecode-array-builder.cc?l=1407&rcl=a3d09098655de3c43eec029fec2a766d63f36caf> > rather > than a runtime call bytecode, which has an generated assembly handler > which, during execution, dispatches on the intrinsic's id > <https://cs.chromium.org/chromium/src/v8/src/interpreter/interpreter-intrinsics-generator.cc?l=98&rcl=a3d09098655de3c43eec029fec2a766d63f36caf> > and for IsSmi does the Smi check > <https://cs.chromium.org/chromium/src/v8/src/interpreter/interpreter-intrinsics-generator.cc?l=189&rcl=a3d09098655de3c43eec029fec2a766d63f36caf>. > The optimizing compiler has similar logic. > > Hope that helps -- V8 is a complex codebase due to the interplay between > C++, javascript, generated assembly, etc., so don't expect to be able to > easily find where everything is defined or how everything works without > serious digging. > > - Leszek > > On Mon, Aug 20, 2018 at 6:14 PM dan Med <litokis.ta...@gmail.com> wrote: > >> How do these function get called >> %GetArrayKeys >> cause i can't seem to find them in the /src/array.js >> as well as %_IsSmi in the same file >> >> 2018-08-20 19:04 GMT+02:00 dan Med <litokis.ta...@gmail.com>: >> >>> Yes i will use it >>> >>> >>> 2018-08-20 15:57 GMT+02:00 <danny.p...@gmail.com>: >>> >>>> I have uploaded a .Net 4.5 application that I wrote over the weekend to >>>> configure and build V8. It's available here: V8Builder >>>> <https://github.com/dannypike/V8Builder>. >>>> >>>> In the README are TL;DR-style instructions if you don't want to use the >>>> GUI (or can't build it and don't have a friend with a C# compiler). >>>> >>>> I gave up trying to write simple instructions, it was much easier to >>>> write an application instead. >>>> >>>> Hope it helps, >>>> >>>> Dan >>>> >>>> -- >>>> -- >>>> v8-dev mailing list >>>> v8-dev@googlegroups.com >>>> http://groups.google.com/group/v8-dev >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "v8-dev" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to v8-dev+unsubscr...@googlegroups.com. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >> -- >> -- >> v8-dev mailing list >> v8-dev@googlegroups.com >> http://groups.google.com/group/v8-dev >> --- >> You received this message because you are subscribed to the Google Groups >> "v8-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to v8-dev+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
