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 15 16skinparam monochrome true 17 18title GC triggered by threshold 19 20autonumber 21participant AppThread1 22participant AppThread2 23participant Allocator 24participant GCTaskQueue 25participant GCThread 26participant GC 27AppThread1 -> Allocator: Request for the allocation 28Allocator -> Allocator: threshold for heap occupancy reached 29Allocator -> GCTaskQueue: Add new GC task 30Allocator -> AppThread1 : Return allocated memory 31GCThread -> GCTaskQueue : Request for the task 32GCTaskQueue -> GCThread : GC task 33GCThread -> GC : GC task 34loop 35GC -> AppThread1: Suspend 36GC -> AppThread2: Suspend 37GC -> GC : GC running at STW 38GC -> AppThread1: Resume 39GC -> AppThread2: Resume 40GC -> GC : GC running concurrently 41end loop 42GC -> GC : GC finished 43@enduml 44