| // Copyright 2020 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/runtime/runtime-utils.h" |
| |
| #include "src/execution/arguments-inl.h" |
| #include "src/objects/js-weak-refs-inl.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| RUNTIME_FUNCTION(Runtime_ShrinkFinalizationRegistryUnregisterTokenMap) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSFinalizationRegistry, finalization_registry, 0); |
| |
| if (!finalization_registry->key_map().IsUndefined(isolate)) { |
| Handle<SimpleNumberDictionary> key_map = |
| handle(SimpleNumberDictionary::cast(finalization_registry->key_map()), |
| isolate); |
| key_map = SimpleNumberDictionary::Shrink(isolate, key_map); |
| finalization_registry->set_key_map(*key_map); |
| } |
| |
| return ReadOnlyRoots(isolate).undefined_value(); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |
