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 15skinparam monochrome true 16title Concurrent Generational GC (major) 17|STW| 18:Collect Roots for tenured space; 19:Initial mark(direct roots and roots from young space); 20|Concurrent| 21:Concurrently mark objects in the tenured space; 22:Pre-clean(process CardTable) and try to reduce pause at Remark; 23|STW| 24:Remark; 25|Concurrent| 26:Sweep tenured space(remove non-marked objects); 27:Reset; 28stop 29@enduml 30