2 commits

Author	SHA1	Message	Date
Andreas Kling	202cc025e5	LibJS: Don't register SafeFunction-to-function-pointer with JS::Heap ... Direct function pointers don't have captures, so we don't need to register the SafeFunction with the Heap when it's just wrapping a function pointer.	2022-10-20 15:16:23 +02:00
Andreas Kling	131c3f50de	LibJS: Add JS::SafeFunction, like Function but protects captures from GC ... SafeFunction automatically registers its closure memory area in a place where the JS garbage collector can find it. This means that you can capture JS::Value and arbitrary pointers into the GC heap in closures, as long as you're using a SafeFunction, and the GC will not zap those values! There's probably some performance impact from this, and there's a lot of things that could be nicer/smarter about it, but let's build something that ensures safety first, and we can worry about performance later. :^)	2022-09-24 12:23:29 +02:00