| 1 | #Region "Microsoft.VisualBasic::35f8fcd9c401d2e908d9b917cc3fee14, Microsoft.VisualBasic.Core\ApplicationServices\Parallel\Threads\ThreadQueue.vb" |
| 2 | |
| 3 | ' Author: |
| 4 | ' |
| 5 | ' asuka (amethyst.asuka@gcmodeller.org) |
| 6 | ' xie (genetics@smrucc.org) |
| 7 | ' xieguigang (xie.guigang@live.com) |
| 8 | ' |
| 9 | ' Copyright (c) 2018 GPL3 Licensed |
| 10 | ' |
| 11 | ' |
| 12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
| 13 | ' |
| 14 | ' |
| 15 | ' This program is free software: you can redistribute it and/or modify |
| 16 | ' it under the terms of the GNU General Public License as published by |
| 17 | ' the Free Software Foundation, either version 3 of the License, or |
| 18 | ' (at your option) any later version. |
| 19 | ' |
| 20 | ' This program is distributed in the hope that it will be useful, |
| 21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | ' GNU General Public License for more details. |
| 24 | ' |
| 25 | ' You should have received a copy of the GNU General Public License |
| 26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 27 | |
| 28 | |
| 29 | |
| 30 | ' /********************************************************************************/ |
| 31 | |
| 32 | ' Summaries: |
| 33 | |
| 34 | ' Class ThreadQueue |
| 35 | ' |
| 36 | ' Properties: MultiThreadSupport |
| 37 | ' |
| 38 | ' Constructor: (+1 Overloads) Sub New |
| 39 | ' Sub: AddToQueue, (+2 Overloads) Dispose, exeQueue, WaitQueue |
| 40 | ' |
| 41 | ' |
| 42 | ' /********************************************************************************/ |
| 43 | |
| 44 | #End Region |
| 45 | |
| 46 | Imports System.Threading |
| 47 | |
| 48 | Namespace Parallel |
| 49 | |
| 50 | ''' <summary> |
| 51 | ''' 任务线程队列 |
| 52 | ''' </summary> |
| 53 | Public Class ThreadQueue : Implements IDisposable |
| 54 | |
| 55 | ''' <summary> |
| 56 | ''' Writer Thread ☺ |
| 57 | ''' </summary> |
| 58 | Dim MyThread As New Thread(AddressOf exeQueue) |
| 59 | |
| 60 | ''' <summary> |
| 61 | ''' If TRUE, the Writing process will be separated from the main thread. |
| 62 | ''' </summary> |
| 63 | Public Property MultiThreadSupport As Boolean = True |
| 64 | |
| 65 | ''' <summary> |
| 66 | ''' Just my queue |
| 67 | ''' </summary> |
| 68 | ReadOnly Queue As New Queue(Of Action)(6666) |
| 69 | |
| 70 | ''' <summary> |
| 71 | ''' Is thread running? |
| 72 | ''' hum |
| 73 | ''' </summary> |
| 74 | Dim QSolverRunning As Boolean = False |
| 75 | |
| 76 | Dim waitForExit As Boolean = False |
| 77 | |
| 78 | ''' <summary> |
| 79 | ''' lock |
| 80 | ''' </summary> |
| 81 | Dim dummy As New Object() |
| 82 | |
| 83 | Sub New() |
| 84 | QSolverRunning = False |
| 85 | End Sub |
| 86 | |
| 87 | ''' <summary> |
| 88 | ''' Add an Action to the queue. |
| 89 | ''' </summary> |
| 90 | ''' <param name="A">()=>{ .. }</param> |
| 91 | Public Sub AddToQueue(A As Action) |
| 92 | SyncLock Queue |
| 93 | Call Queue.Enqueue(A) |
| 94 | End SyncLock |
| 95 | |
| 96 | If MultiThreadSupport Then ' 只需要将任务添加到队列之中就行了 |
| 97 | SyncLock dummy |
| 98 | If Not MyThread.IsAlive Then |
| 99 | QSolverRunning = False |
| 100 | MyThread = New Thread(AddressOf exeQueue) |
| 101 | |
| 102 | MyThread.Name = "xConsole · Multi-Thread Writer" |
| 103 | MyThread.Start() |
| 104 | End If |
| 105 | End SyncLock |
| 106 | Else |
| 107 | exeQueue() ' 等待线程任务的执行完毕 |
| 108 | End If |
| 109 | End Sub |
| 110 | |
| 111 | ''' <summary> |
| 112 | ''' Wait for all thread queue job done.(Needed if you are using multiThreaded queue) |
| 113 | ''' </summary> |
| 114 | Public Sub WaitQueue() |
| 115 | While QSolverRunning = True |
| 116 | Thread.Sleep(10) |
| 117 | End While |
| 118 | End Sub |
| 119 | |
| 120 | ''' <summary> |
| 121 | ''' Execute the queue list |
| 122 | ''' </summary> |
| 123 | Private Sub exeQueue() |
| 124 | QSolverRunning = True |
| 125 | |
| 126 | While Queue IsNot Nothing AndAlso Queue.Count > 0 |
| 127 | Call Thread.MemoryBarrier() |
| 128 | |
| 129 | While True |
| 130 | Dim a As Action |
| 131 | |
| 132 | SyncLock Queue |
| 133 | If Queue.Count = 0 Then |
| 134 | Exit While |
| 135 | Else |
| 136 | a = Queue.Dequeue() |
| 137 | End If |
| 138 | End SyncLock |
| 139 | |
| 140 | If a IsNot Nothing Then |
| 141 | a.Invoke() |
| 142 | End If |
| 143 | End While |
| 144 | End While |
| 145 | |
| 146 | QSolverRunning = False |
| 147 | End Sub |
| 148 | |
| 149 | #Region "IDisposable Support" |
| 150 | Private disposedValue As Boolean ' 要检测冗余调用 |
| 151 | |
| 152 | ' IDisposable |
| 153 | Protected Overridable Sub Dispose(disposing As Boolean) |
| 154 | If Not disposedValue Then |
| 155 | If disposing Then |
| 156 | ' TODO: 释放托管状态(托管对象)。 |
| 157 | Call WaitQueue() |
| 158 | waitForExit = True |
| 159 | End If |
| 160 | |
| 161 | ' TODO: 释放未托管资源(未托管对象)并在以下内容中替代 Finalize()。 |
| 162 | ' TODO: 将大型字段设置为 null。 |
| 163 | End If |
| 164 | disposedValue = True |
| 165 | End Sub |
| 166 | |
| 167 | ' TODO: 仅当以上 Dispose(disposing As Boolean)拥有用于释放未托管资源的代码时才替代 Finalize()。 |
| 168 | 'Protected Overrides Sub Finalize() |
| 169 | ' ' 请勿更改此代码。将清理代码放入以上 Dispose(disposing As Boolean)中。 |
| 170 | ' Dispose(False) |
| 171 | ' MyBase.Finalize() |
| 172 | 'End Sub |
| 173 | |
| 174 | ' Visual Basic 添加此代码以正确实现可释放模式。 |
| 175 | Public Sub Dispose() Implements IDisposable.Dispose |
| 176 | ' 请勿更改此代码。将清理代码放入以上 Dispose(disposing As Boolean)中。 |
| 177 | Dispose(True) |
| 178 | ' TODO: 如果在以上内容中替代了 Finalize(),则取消注释以下行。 |
| 179 | ' GC.SuppressFinalize(Me) |
| 180 | End Sub |
| 181 | #End Region |
| 182 | End Class |
| 183 | End Namespace |