1b1994897Sopenharmony_ci' Copyright (c) 2021-2022 Huawei Device Co., Ltd. 2b1994897Sopenharmony_ci' Licensed under the Apache License, Version 2.0 (the "License"); 3b1994897Sopenharmony_ci' you may not use this file except in compliance with the License. 4b1994897Sopenharmony_ci' You may obtain a copy of the License at 5b1994897Sopenharmony_ci' 6b1994897Sopenharmony_ci' http://www.apache.org/licenses/LICENSE-2.0 7b1994897Sopenharmony_ci' 8b1994897Sopenharmony_ci' Unless required by applicable law or agreed to in writing, software 9b1994897Sopenharmony_ci' distributed under the License is distributed on an "AS IS" BASIS, 10b1994897Sopenharmony_ci' WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11b1994897Sopenharmony_ci' See the License for the specific language governing permissions and 12b1994897Sopenharmony_ci' limitations under the License. 13b1994897Sopenharmony_ci 14b1994897Sopenharmony_ci@startuml 15b1994897Sopenharmony_cistart 16b1994897Sopenharmony_ci 17b1994897Sopenharmony_ciskinparam monochrome true 18b1994897Sopenharmony_ci 19b1994897Sopenharmony_cititle Process references 20b1994897Sopenharmony_ci 21b1994897Sopenharmony_ciif (The reason of GC is not OOM) then(Yes) 22b1994897Sopenharmony_ci :Mark soft references(see Marking phase); 23b1994897Sopenharmony_ciendif 24b1994897Sopenharmony_ci 25b1994897Sopenharmony_ci:ClearFinalizeReferences(see FinalizerDaemon); 26b1994897Sopenharmony_ci 27b1994897Sopenharmony_ciwhile (while SoftReferenceQueue, WeakReferenceQueue, PhantomReferenceQueue not processed) 28b1994897Sopenharmony_ci while (Queue is not empty) 29b1994897Sopenharmony_ci :Get object from the Queue; 30b1994897Sopenharmony_ci if (The referent object is marked or processed already) then(Yes) 31b1994897Sopenharmony_ci else (No) 32b1994897Sopenharmony_ci :referent = null; 33b1994897Sopenharmony_ci :Add the object to cleared_references; 34b1994897Sopenharmony_ci endif 35b1994897Sopenharmony_ci endwhile 36b1994897Sopenharmony_ciendwhile 37b1994897Sopenharmony_ci 38b1994897Sopenharmony_ci:enqueue cleared_references to be processed via ReferenceQueue(Java); 39b1994897Sopenharmony_ci 40b1994897Sopenharmony_cistop 41b1994897Sopenharmony_ci@enduml 42