When chromium OS on a chromebook boots up, which directory is the first to be invoked and then executed
2018-08-21 11:12 GMT+02:00 dan Med <litokis.ta...@gmail.com>: > 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. 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