Commit graph

5 commits

Author SHA1 Message Date
Aliaksandr Kalenik
4c789ac689 LibJS: Skip iteration result allocation in AsyncFunctionDriverWrapper
- Create less GC pressure by making each `await` in async function skip
  iteration result object allocation.
- Skip uncached `Object::get()` calls to extract `value` and `done` from
  the iteration result object.

With this change, following function goes 30% faster on my computer:
```js
(async () => {
    const resolved = Promise.resolve();
    for (let i = 0; i < 5_000_000; i++) {
        await resolved;
    }
})();
```
2025-05-09 12:30:15 +02:00
Andreas Kling
de424d6879 LibJS: Make Completion.[[Value]] non-optional
Instead, just use js_undefined() whenever the [[Value]] field is unused.
This avoids a whole bunch of presence checks.
2025-04-05 11:20:26 +02:00
Shannon Booth
f87041bf3a LibGC+Everywhere: Factor out a LibGC from LibJS
Resulting in a massive rename across almost everywhere! Alongside the
namespace change, we now have the following names:

 * JS::NonnullGCPtr -> GC::Ref
 * JS::GCPtr -> GC::Ptr
 * JS::HeapFunction -> GC::Function
 * JS::CellImpl -> GC::Cell
 * JS::Handle -> GC::Root
2024-11-15 14:49:20 +01:00
Shannon Booth
9b79a686eb LibJS+LibWeb: Use realm.create<T> instead of heap.allocate<T>
The main motivation behind this is to remove JS specifics of the Realm
from the implementation of the Heap.

As a side effect of this change, this is a bit nicer to read than the
previous approach, and in my opinion, also makes it a little more clear
that this method is specific to a JavaScript Realm.
2024-11-13 16:51:44 -05:00
Timothy Flynn
93712b24bf Everywhere: Hoist the Libraries folder to the top-level 2024-11-10 12:50:45 +01:00
Renamed from Userland/Libraries/LibJS/Runtime/IteratorHelper.cpp (Browse further)