[vm/ffi] Simplify some aspects of ffi callback metadata implementation Make the free and allocated lists simply linked lists of `Metadata*` (instead of `Metadata*` pointing to Trampoline, which - via some logic - can be translated into next `Metadata*`). Make the layout of the virtual address space mapping and offsets `constexpr` functions instead of computing them at runtime & caching in fields. Use `uword` to represent `Trampoline` entrypoint (as we generally use `uword` for `Code.EntryPoint()` / ...) TEST=ci Change-Id: If4ffa11712acc46c9295b609caff7576d2354fe4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/305983 Commit-Queue: Martin Kustermann <kustermann@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com>
Dart is:
Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.
Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.
Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:
Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.
Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
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See LICENSE and PATENT_GRANT.
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Browse pub.dev for more packages and libraries contributed by the community and the Dart team.
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You can also contribute patches, as described in Contributing.