// 顯示執行緒集區內的所有運作參數
public static void ShowAllThreadPoolInformation(ThreadPoolInformation threadPoolInformation)
{
Console.WriteLine($"執行緒集區的相關設定資訊");
Console.WriteLine($"邏輯處理器數目 : {threadPoolInformation.ProcessorCount} ");
Console.WriteLine($"WorkItem Thread :" +
$" (Busy:{threadPoolInformation.BusyWorkerThreads}, Free:{threadPoolInformation.AvailableWorkerThreads}, Min:{threadPoolInformation.MinWorkerThreads}, Max:{threadPoolInformation.MaxWorkerThreads})");
Console.WriteLine($"IOPC Thread :" +
$" (Busy:{threadPoolInformation.BusyCompletionPortThreads}, Free:{threadPoolInformation.AvailableCompletionPortThreads}, Min:{threadPoolInformation.MinCompletionPortThreads}, Max:{threadPoolInformation.MaxCompletionPortThreads})");
Console.WriteLine($"");
}
// 顯示執行緒集區內上有多少空間，可以用來增加新執行緒的數量
public static void ShowAvailableThreadPoolInformation(ThreadPoolInformation threadPoolInformation)
{
if (LastBusyWorkerThreads != threadPoolInformation.BusyWorkerThreads ||
LastBusyCompletionPortThreads != threadPoolInformation.BusyCompletionPortThreads)
{
LastBusyWorkerThreads = threadPoolInformation.BusyWorkerThreads;
LastBusyCompletionPortThreads = threadPoolInformation.BusyCompletionPortThreads;
//Console.WriteLine($" WorkItem Thread :" +
// $" (Busy:{threadPoolInformation.BusyWorkerThreads}, Free:{threadPoolInformation.AvailableWorkerThreads}, Min:{threadPoolInformation.MinWorkerThreads}, Max:{threadPoolInformation.MaxWorkerThreads})");
//Console.WriteLine($" IOPC Thread :" +
// $" (Busy:{threadPoolInformation.BusyCompletionPortThreads}, Free:{threadPoolInformation.AvailableCompletionPortThreads}, Min:{threadPoolInformation.MinCompletionPortThreads}, Max:{threadPoolInformation.MaxCompletionPortThreads})");
}
}
public static void ShowCurrentThreadUsage(ThreadPoolInformation threadPoolInformation, ThreadPoolInformation threadPoolCurrentInformation)
{
int workerThreads;
int completionPortThreads;
// 傳回之執行緒集區的現在還可以容許使用多少的執行緒數量大小
ThreadPool.GetAvailableThreads(out workerThreads, out completionPortThreads);
threadPoolCurrentInformation.AvailableWorkerThreads = workerThreads;
threadPoolCurrentInformation.AvailableCompletionPortThreads = completionPortThreads;
threadPoolCurrentInformation.BusyWorkerThreads = threadPoolInformation.AvailableWorkerThreads - workerThreads;
threadPoolCurrentInformation.BusyCompletionPortThreads = threadPoolInformation.AvailableCompletionPortThreads - completionPortThreads;
ShowAvailableThreadPoolInformation(threadPoolCurrentInformation);
}
public static void BeginMonitor()
{
threadPoolInformation = new ThreadPoolInformation();
GetThreadPoolInformation(threadPoolInformation);
//LastBusyWorkerThreads = threadPoolInformation.BusyWorkerThreads;
//LastBusyCompletionPortThreads = threadPoolInformation.BusyCompletionPortThreads;
ShowAllThreadPoolInformation(threadPoolInformation);
threadPoolCurrentInformation = threadPoolInformation.Clone();
while (true)
{
ShowCurrentThreadUsage(threadPoolInformation, threadPoolCurrentInformation);
Thread.Sleep(0);
}
}
// 取得執行緒集區內的相關設定參數
public static void GetThreadPoolInformation(ThreadPoolInformation threadPoolInformation)
{
int workerThreads;
int completionPortThreads;
// 傳回之執行緒集區的現在還可以容許使用多少的執行緒數量大小
ThreadPool.GetAvailableThreads(out workerThreads, out completionPortThreads);
threadPoolInformation.AvailableWorkerThreads = workerThreads;
threadPoolInformation.AvailableCompletionPortThreads = completionPortThreads;
// 擷取可並行使用之執行緒集區的要求數目。 超過該數目的所有要求會繼續佇列，直到可以使用執行緒集區執行緒為止
ThreadPool.GetMaxThreads(out workerThreads, out completionPortThreads);
threadPoolInformation.MaxWorkerThreads = workerThreads;
threadPoolInformation.MaxCompletionPortThreads = completionPortThreads;
// 在切換至管理執行緒建立和解構的演算法之前，擷取執行緒集區隨著提出新要求，視需要建立的執行緒最小數目。
ThreadPool.GetMinThreads(out workerThreads, out completionPortThreads);
threadPoolInformation.MinWorkerThreads = workerThreads;
threadPoolInformation.MinCompletionPortThreads = completionPortThreads;
// 如果目前電腦包含多個處理器群組，則這個屬性會傳回可供 Common Language Runtime (CLR) 使用的邏輯處理器數目
threadPoolInformation.ProcessorCount = System.Environment.ProcessorCount;
}
public void ComputeBusyThreads(ThreadPoolInformation threadPoolInformation)
{
this.BusyWorkerThreads = threadPoolInformation.AvailableWorkerThreads - this.AvailableWorkerThreads;
this.BusyCompletionPortThreads = threadPoolInformation.BusyCompletionPortThreads - this.BusyCompletionPortThreads;
}
