Thread.IsThreadPoolThread プロパティ

.NET Framework クラス ライブラリ リファレンス

Thread.IsThreadPoolThread プロパティ

スレッドがマネージ スレッド プールに所属しているかどうかを示す値を取得します。

名前空間: System.Threading
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public ReadOnly Property
 IsThreadPoolThread As Boolean

Visual Basic (使用法)

Dim instance As Thread
Dim value As Boolean

value = instance.IsThreadPoolThread

C#

public bool IsThreadPoolThread { get;
 }

C++

public:
property bool IsThreadPoolThread {
    bool get ();
}

J#

/** @property */
public boolean get_IsThreadPoolThread ()

JScript

public function get IsThreadPoolThread
 () : boolean

プロパティ値
このスレッドがマネージ スレッド プールに所属している場合は true。それ以外の場合は false。

使用例

スレッドがスレッド プールに属するものであるかどうかを判断する方法の例を次に示します。

Visual Basic

Option Explicit
Option Strict

Imports System
Imports System.Threading

Public Class IsThreadPool

    <MTAThread> _
    Shared Sub Main()
        Dim autoEvent As New
 AutoResetEvent(False)

        Dim regularThread As New
 Thread(AddressOf ThreadMethod)
        regularThread.Start()
        ThreadPool.QueueUserWorkItem(AddressOf WorkMethod, autoEvent)

        ' Wait for foreground thread to end.
        regularThread.Join()

        ' Wait for background thread to end.
        autoEvent.WaitOne()
    End Sub

    Shared Sub ThreadMethod()
        Console.WriteLine("ThreadOne, executing ThreadMethod,
 " & _
            "is from the thread pool? {0}", _
            Thread.CurrentThread.IsThreadPoolThread)
    End Sub

    Shared Sub WorkMethod(stateInfo As
 Object)
        Console.WriteLine("ThreadTwo, executing WorkMethod, "
 & _
            "is from the thread pool? {0}", _
            Thread.CurrentThread.IsThreadPoolThread)

        ' Signal that this thread is finished.
        DirectCast(stateInfo, AutoResetEvent).Set()
    End Sub

End Class

C#

using System;
using System.Threading;

class IsThreadPool
{
    static void Main()
    {
        AutoResetEvent autoEvent = new AutoResetEvent(false);

        Thread regularThread = 
            new Thread(new ThreadStart(ThreadMethod));
        regularThread.Start();
        ThreadPool.QueueUserWorkItem(new WaitCallback(WorkMethod),
 
            autoEvent);

        // Wait for foreground thread to end.
        regularThread.Join();

        // Wait for background thread to end.
        autoEvent.WaitOne();
    }

    static void ThreadMethod()
    {
        Console.WriteLine("ThreadOne, executing ThreadMethod, " +
            "is {0}from the thread pool.", 
            Thread.CurrentThread.IsThreadPoolThread ? "" : "not ");
    }

    static void WorkMethod(object stateInfo)
    {
        Console.WriteLine("ThreadTwo, executing WorkMethod, " +
            "is {0}from the thread pool.", 
            Thread.CurrentThread.IsThreadPoolThread ? "" : "not ");

        // Signal that this thread is finished.
        ((AutoResetEvent)stateInfo).Set();
    }
}

C++

using namespace System;
using namespace System::Threading;
ref class IsThreadPool
{
public:

   static void ThreadMethod()
   {
      Console::WriteLine( "ThreadOne, executing ThreadMethod, "
      "is {0}from the thread pool.", Thread::CurrentThread->IsThreadPoolThread
 ? (String^)"" : "not " );
   }


   static void WorkMethod( Object^ stateInfo
 )
   {
      Console::WriteLine( "ThreadTwo, executing WorkMethod, "
      "is {0}from the thread pool.", Thread::CurrentThread->IsThreadPoolThread
 ? (String^)"" : "not " );
      
      // Signal that this thread is finished.
      dynamic_cast<AutoResetEvent^>(stateInfo)->Set();
   }

};

int main()
{
   AutoResetEvent^ autoEvent = gcnew AutoResetEvent( false );
   Thread^ regularThread = gcnew Thread( gcnew ThreadStart( &IsThreadPool::ThreadMethod
 ) );
   regularThread->Start();
   ThreadPool::QueueUserWorkItem( gcnew WaitCallback( &IsThreadPool::WorkMethod
 ), autoEvent );
   
   // Wait for foreground thread to end.
   regularThread->Join();
   
   // Wait for background thread to end.
   autoEvent->WaitOne();
}

J#

import System.*;
import System.Threading.*;
import System.Threading.Thread;

class IsThreadPool
{
    public static void main(String[]
 args)
    {
        AutoResetEvent autoEvent = new AutoResetEvent(false);
        Thread regularThread = new Thread(new
 ThreadStart(ThreadMethod));

        regularThread.Start();
        ThreadPool.QueueUserWorkItem(new WaitCallback(WorkMethod),
 autoEvent);

        // Wait for foreground thread to end.
        regularThread.Join();

        // Wait for background thread to end.
        autoEvent.WaitOne();
    } //main

    static void ThreadMethod()
    {
        Console.WriteLine("ThreadOne, executing ThreadMethod, " 
            +  "is {0}from the thread pool.", 
            (Thread.get_CurrentThread().get_IsThreadPoolThread())
            ? "" : "not ");
    } //ThreadMethod

    static void WorkMethod(Object stateInfo)
    {
        Console.WriteLine("ThreadTwo, executing WorkMethod, " + 
            "is {0}from the thread pool.",
            (Thread.get_CurrentThread().get_IsThreadPoolThread()) 
            ? "" : "not ");

        // Signal that this thread is finished.
        ((AutoResetEvent)(stateInfo)).Set();
    } //WorkMethod
} //IsThreadPool

プラットフォーム

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
Thread クラス
Thread メンバ
System.Threading 名前空間