Process.PriorityClass 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得或設定相關處理序的整體優先權分類。
public:
property System::Diagnostics::ProcessPriorityClass PriorityClass { System::Diagnostics::ProcessPriorityClass get(); void set(System::Diagnostics::ProcessPriorityClass value); };public System.Diagnostics.ProcessPriorityClass PriorityClass { get; set; }member this.PriorityClass : System.Diagnostics.ProcessPriorityClass with get, setPublic Property PriorityClass As ProcessPriorityClass屬性值
相關聯處理序的優先權分類，處理序的 BasePriority 由此計算出來。
例外狀況
您正在嘗試存取於遠端電腦上執行之處理序的 PriorityClass 屬性。 這個屬性僅供在本機電腦執行的處理序使用。
處理序 Id 無法使用。
無法設定優先權類別，因為它不使用如 ProcessPriorityClass 列舉類型中所定義的有效值。
範例
下列範例會啟動記事本的實例。 然後，此範例會擷取並顯示相關聯進程的各種屬性。 此範例會偵測進程何時結束，並顯示進程的結束代碼。
#using <system.dll>
using namespace System;
using namespace System::Diagnostics;
int main()
{
// Define variables to track the peak
// memory usage of the process.
_int64 peakPagedMem = 0,peakWorkingSet = 0,peakVirtualMem = 0;
Process^ myProcess = nullptr;
try
{
// Start the process.
myProcess = Process::Start( "NotePad.exe" );
// Display the process statistics until
// the user closes the program.
do
{
if ( !myProcess->HasExited )
{
// Refresh the current process property values.
myProcess->Refresh();
Console::WriteLine();
// Display current process statistics.
Console::WriteLine( "{0} -", myProcess );
Console::WriteLine( "-------------------------------------" );
Console::WriteLine( " physical memory usage: {0}", myProcess->WorkingSet64 );
Console::WriteLine( " base priority: {0}", myProcess->BasePriority );
Console::WriteLine( " priority class: {0}", myProcess->PriorityClass );
Console::WriteLine( " user processor time: {0}", myProcess->UserProcessorTime );
Console::WriteLine( " privileged processor time: {0}", myProcess->PrivilegedProcessorTime );
Console::WriteLine( " total processor time: {0}", myProcess->TotalProcessorTime );
Console::WriteLine(" PagedSystemMemorySize64: {0}", myProcess->PagedSystemMemorySize64);
Console::WriteLine(" PagedMemorySize64: {0}", myProcess->PagedMemorySize64);
// Update the values for the overall peak memory statistics.
peakPagedMem = myProcess->PeakPagedMemorySize64;
peakVirtualMem = myProcess->PeakVirtualMemorySize64;
peakWorkingSet = myProcess->PeakWorkingSet64;
if ( myProcess->Responding )
{
Console::WriteLine( "Status = Running" );
}
else
{
Console::WriteLine( "Status = Not Responding" );
}
}
}
while ( !myProcess->WaitForExit( 1000 ) );
Console::WriteLine();
Console::WriteLine( "Process exit code: {0}", myProcess->ExitCode );
// Display peak memory statistics for the process.
Console::WriteLine( "Peak physical memory usage of the process: {0}", peakWorkingSet );
Console::WriteLine( "Peak paged memory usage of the process: {0}", peakPagedMem );
Console::WriteLine( "Peak virtual memory usage of the process: {0}", peakVirtualMem );
}
finally
{
if ( myProcess != nullptr )
{
myProcess->Close();
}
}
}
using System;
using System.Diagnostics;
namespace ProcessSample
{
class ProcessMonitorSample
{
public static void Main()
{
// Define variables to track the peak
// memory usage of the process.
long peakPagedMem = 0,
peakWorkingSet = 0,
peakVirtualMem = 0;
// Start the process.
using (Process myProcess = Process.Start("NotePad.exe"))
{
// Display the process statistics until
// the user closes the program.
do
{
if (!myProcess.HasExited)
{
// Refresh the current process property values.
myProcess.Refresh();
Console.WriteLine();
// Display current process statistics.
Console.WriteLine($"{myProcess} -");
Console.WriteLine("-------------------------------------");
Console.WriteLine($" Physical memory usage : {myProcess.WorkingSet64}");
Console.WriteLine($" Base priority : {myProcess.BasePriority}");
Console.WriteLine($" Priority class : {myProcess.PriorityClass}");
Console.WriteLine($" User processor time : {myProcess.UserProcessorTime}");
Console.WriteLine($" Privileged processor time : {myProcess.PrivilegedProcessorTime}");
Console.WriteLine($" Total processor time : {myProcess.TotalProcessorTime}");
Console.WriteLine($" Paged system memory size : {myProcess.PagedSystemMemorySize64}");
Console.WriteLine($" Paged memory size : {myProcess.PagedMemorySize64}");
// Update the values for the overall peak memory statistics.
peakPagedMem = myProcess.PeakPagedMemorySize64;
peakVirtualMem = myProcess.PeakVirtualMemorySize64;
peakWorkingSet = myProcess.PeakWorkingSet64;
if (myProcess.Responding)
{
Console.WriteLine("Status = Running");
}
else
{
Console.WriteLine("Status = Not Responding");
}
}
}
while (!myProcess.WaitForExit(1000));
Console.WriteLine();
Console.WriteLine($" Process exit code : {myProcess.ExitCode}");
// Display peak memory statistics for the process.
Console.WriteLine($" Peak physical memory usage : {peakWorkingSet}");
Console.WriteLine($" Peak paged memory usage : {peakPagedMem}");
Console.WriteLine($" Peak virtual memory usage : {peakVirtualMem}");
}
}
}
}
Imports System.Diagnostics
Namespace ProcessSample
Class ProcessMonitorSample
Public Shared Sub Main()
' Define variables to track the peak
' memory usage of the process.
Dim peakPagedMem As Long = 0
Dim peakWorkingSet As Long = 0
Dim peakVirtualMem As Long = 0
' Start the process.
Using myProcess = Process.Start("NotePad.exe")
' Display process statistics until
' the user closes the program.
Do
If Not myProcess.HasExited Then
' Refresh the current process property values.
myProcess.Refresh()
Console.WriteLine()
' Display current process statistics.
Console.WriteLine($"{myProcess} -")
Console.WriteLine("-------------------------------------")
Console.WriteLine($" Physical memory usage : {myProcess.WorkingSet64}")
Console.WriteLine($" Base priority : {myProcess.BasePriority}")
Console.WriteLine($" Priority class : {myProcess.PriorityClass}")
Console.WriteLine($" User processor time : {myProcess.UserProcessorTime}")
Console.WriteLine($" Privileged processor time : {myProcess.PrivilegedProcessorTime}")
Console.WriteLine($" Total processor time : {myProcess.TotalProcessorTime}")
Console.WriteLine($" Paged system memory size : {myProcess.PagedSystemMemorySize64}")
Console.WriteLine($" Paged memory size : {myProcess.PagedMemorySize64}")
' Update the values for the overall peak memory statistics.
peakPagedMem = myProcess.PeakPagedMemorySize64
peakVirtualMem = myProcess.PeakVirtualMemorySize64
peakWorkingSet = myProcess.PeakWorkingSet64
If myProcess.Responding Then
Console.WriteLine("Status = Running")
Else
Console.WriteLine("Status = Not Responding")
End If
End If
Loop While Not myProcess.WaitForExit(1000)
Console.WriteLine()
Console.WriteLine($" Process exit code : {myProcess.ExitCode}")
' Display peak memory statistics for the process.
Console.WriteLine($" Peak physical memory usage of the process : {peakWorkingSet}")
Console.WriteLine($" Peak paged memory usage of the process : {peakPagedMem}")
Console.WriteLine($" Peak virtual memory usage of the process : {peakVirtualMem}")
End Using
End Sub
End Class
End Namespace
備註
這個屬性傳回的值代表進程最近重新整理的優先順序。 若要取得最新的優先順序，您必須先呼叫 Refresh() 方法。
進程優先順序類別包含一系列線程優先順序層級。 進程中執行之優先順序不同的線程會相對於進程的優先順序類別執行。 Win32 使用四個優先順序類別，每個類別有七個基底優先順序層級。 這些行程優先順序類別會在列舉中ProcessPriorityClass擷取，可讓您將進程優先順序設定為Idle、Normal、、、HighAboveNormal、 BelowNormal或 RealTime。 根據經過的時間或其他提升的時間，當進程需要讓其他人存取處理器時，操作系統可以變更基底優先順序層級。 此外，您可以將 設定 PriorityBoostEnabled 為暫時提升已從等候狀態取出之線程的優先順序層級。 當進程回到等候狀態時，就會重設優先順序。
屬性 BasePriority 可讓您檢視指派給進程的起始優先順序。 不過，因為它是只讀的，所以您無法使用 BasePriority 屬性來設定進程的優先順序。 若要變更優先順序，請使用 PriorityClass 屬性，這個屬性會取得或設定進程的整體優先順序類別。
無法使用系統監視器來檢視優先順序類別。 下表顯示 和 PriorityClass 值之間的BasePriority關聯性。
| BasePriority | PriorityClass |
|---|---|
| 4 | Idle |
| 8 | Normal |
| 13 | High |
| 24 | RealTime |
適用於
另請參閱
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