1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "weak_fields_require_tracing.h" 6 7 namespace blink { 8 9 void HeapObject::trace(Visitor* visitor) 10 { 11 // Missing visitor->trace(m_obj1); 12 // Missing visitor->trace(m_obj2); 13 // visitor->trace(m_obj3) in callback. 14 // Missing visitor->trace(m_set1); 15 visitor->trace(m_set2); 16 visitor->registerWeakMembers<HeapObject, 17 &HeapObject::clearWeakMembers>(this); 18 } 19 20 void HeapObject::clearWeakMembers(Visitor* visitor) 21 { 22 visitor->trace(m_obj1); // Does not count. 23 // Missing visitor->trace(m_obj2); 24 visitor->trace(m_obj3); // OK. 25 visitor->trace(m_set1); // Does not count. 26 } 27 28 } 29
