Before this change, we'd use the system page size as the HeapBlock
size. This caused it to vary on different platforms, going as low
as 4 KiB on most Linux systems.
To make this work, we now use posix_memalign() to ensure we get
size-aligned allocations on every platform.
Also nice: HeapBlock::BLOCK_SIZE is now a constant.
In our process architecture, there's only ever one JS::VM per process.
This allows us to have a VM::the() singleton getter that optimizes
down to a single global access everywhere.
Seeing 1-2% speed-up on all JS benchmarks from this.
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
Renamed from Libraries/LibJS/Heap/Internals.h (Browse further)
