| // Copyright 2019 The Chromium 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 "third_party/blink/renderer/platform/bindings/dom_data_store.h" |
| |
| namespace blink { |
| |
| DOMDataStore::DOMDataStore(v8::Isolate* isolate, bool is_main_world) |
| : is_main_world_(is_main_world) {} |
| |
| void DOMDataStore::Dispose() { |
| for (auto& it : wrapper_map_) { |
| // Explicitly reset references so that a following V8 GC will not find them |
| // and treat them as roots. There's optimizations (see |
| // EmbedderHeapTracer::IsRootForNonTracingGC) that would not treat them as |
| // roots and then Blink would not be able to find and remove them from a DOM |
| // world. Explicitly resetting on disposal avoids that problem |
| it.value.Clear(); |
| } |
| } |
| |
| void DOMDataStore::Trace(Visitor* visitor) const { |
| visitor->Trace(wrapper_map_); |
| } |
| |
| } // namespace blink |
