' Copyright (c) 2021-2022 Huawei Device Co., Ltd.
' Licensed under the Apache License, Version 2.0 (the "License");
' you may not use this file except in compliance with the License.
' You may obtain a copy of the License at
'
' http://www.apache.org/licenses/LICENSE-2.0
'
' Unless required by applicable law or agreed to in writing, software
' distributed under the License is distributed on an "AS IS" BASIS,
' WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
' See the License for the specific language governing permissions and
' limitations under the License.

@startuml

skinparam monochrome true
title Generational GC(non-concurrent)
[*] -> PreForkInit
PreForkInit -> NormalExecution : forked
NormalExecution -> STWState
STWState --> NormalExecution
NormalExecution -> [*]

state NormalExecution {
    [*] -> CodeExecution1
    --
    [*] -> CodeExecutionN
    --
    state "GCThread Idle" as GCIdle
    [*] -> GCIdle
    --
    [*] -> CompilerThread
}

state STWState {
    [*] -> CodeExecution1Suspended
    --
    [*] -> CodeExecutionNSuspended
    --
    state "GCThread is active in STW mode" as GCSTW
    [*] -> GCSTW
    --
    state "Compiler thread will be blocked at the Mutator Lock" as CompilerThreadWillBeBlocked
    [*] -> CompilerThreadWillBeBlocked
}

@enduml