1' Copyright (c) 2021-2022 Huawei Device Co., Ltd. 2' Licensed under the Apache License, Version 2.0 (the "License"); 3' you may not use this file except in compliance with the License. 4' You may obtain a copy of the License at 5' 6' http://www.apache.org/licenses/LICENSE-2.0 7' 8' Unless required by applicable law or agreed to in writing, software 9' distributed under the License is distributed on an "AS IS" BASIS, 10' WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11' See the License for the specific language governing permissions and 12' limitations under the License. 13 14@startuml 15start 16 17skinparam monochrome true 18 19title Process references 20 21if (The reason of GC is not OOM) then(Yes) 22 :Mark soft references(see Marking phase); 23endif 24 25:ClearFinalizeReferences(see FinalizerDaemon); 26 27while (while SoftReferenceQueue, WeakReferenceQueue, PhantomReferenceQueue not processed) 28 while (Queue is not empty) 29 :Get object from the Queue; 30 if (The referent object is marked or processed already) then(Yes) 31 else (No) 32 :referent = null; 33 :Add the object to cleared_references; 34 endif 35 endwhile 36endwhile 37 38:enqueue cleared_references to be processed via ReferenceQueue(Java); 39 40stop 41@enduml 42