runtime-weak-refs.cc

Go to the documentation of this file.

// 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/execution/arguments-inl.h"
#include "src/objects/js-weak-refs-inl.h"
#include "src/runtime/runtime-utils.h"
 
namespace v8 {
namespace internal {
 
RUNTIME_FUNCTION(
    Runtime_JSFinalizationRegistryRegisterWeakCellWithUnregisterToken) {
  HandleScope scope(isolate);
  DCHECK_EQ(2, args.length());
  DirectHandle<JSFinalizationRegistry> finalization_registry =
      args.at<JSFinalizationRegistry>(0);
  DirectHandle<WeakCell> weak_cell = args.at<WeakCell>(1);
 
  JSFinalizationRegistry::RegisterWeakCellWithUnregisterToken(
      finalization_registry, weak_cell, isolate);
 
  return ReadOnlyRoots(isolate).undefined_value();
}
 
RUNTIME_FUNCTION(Runtime_JSWeakRefAddToKeptObjects) {
  HandleScope scope(isolate);
  DCHECK_EQ(1, args.length());
  DirectHandle<HeapObject> object = args.at<HeapObject>(0);
  DCHECK(Object::CanBeHeldWeakly(*object));
 
  isolate->heap()->KeepDuringJob(object);
 
  return ReadOnlyRoots(isolate).undefined_value();
}
 
}  // namespace internal
}  // namespace v8