Before this change, it was possible for a second GC to get triggered
in the middle of a first GC, due to allocations happening in the
FinalizationRegistry cleanup host hook. To avoid this causing problems,
we add a "post-GC task" mechanism and use that to invoke the host hook
once all other GC activity is finished, and we've unset the "collecting
garbage" flag.
Note that the test included here only fails reliably when running with
the -g flag (collect garbage after each allocation).
Fixes#3051
This includes a protocol for creating LibGC Heap allocated Swift
objects. Pay no attention to the Unmanaged shenanigans, they are
all behind the curtain.
This will allow us to use the GC to manage the lifetime of objects
that are not C++ objects, such as Swift objects. In the future we
could expand this cursed FFI to other languages as well.
While we don't want arbitrary callers deferring GC, we do want
deferral to be available to the Swift. In order for Swift to
understand the RAII nature of DeferGC, we need to mark it as
non-copyable.
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/Heap.h (Browse further)
