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_ciskinparam monochrome true 16b1994897Sopenharmony_cititle Concurrent Generational GC (major) 17b1994897Sopenharmony_ci|STW| 18b1994897Sopenharmony_ci:Collect Roots for tenured space; 19b1994897Sopenharmony_ci:Initial mark(direct roots and roots from young space); 20b1994897Sopenharmony_ci|Concurrent| 21b1994897Sopenharmony_ci:Concurrently mark objects in the tenured space; 22b1994897Sopenharmony_ci:Pre-clean(process CardTable) and try to reduce pause at Remark; 23b1994897Sopenharmony_ci|STW| 24b1994897Sopenharmony_ci:Remark; 25b1994897Sopenharmony_ci|Concurrent| 26b1994897Sopenharmony_ci:Sweep tenured space(remove non-marked objects); 27b1994897Sopenharmony_ci:Reset; 28b1994897Sopenharmony_cistop 29b1994897Sopenharmony_ci@enduml 30