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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Threading;
using System.Linq;
using Xunit;
using System.Threading.Tasks;
namespace System.Diagnostics.Tests
{
public class ProcessThreadTests : ProcessTestBase
{
[Fact]
public void TestCommonPriorityAndTimeProperties()
{
ProcessThreadCollection threadCollection = _process.Threads;
Assert.True(threadCollection.Count > 0);
ProcessThread thread = threadCollection[0];
try
{
if (ThreadState.Terminated != thread.ThreadState)
{
Assert.True(thread.Id >= 0);
Assert.Equal(_process.BasePriority, thread.BasePriority);
Assert.True(thread.CurrentPriority >= 0);
Assert.True(thread.PrivilegedProcessorTime.TotalSeconds >= 0);
Assert.True(thread.UserProcessorTime.TotalSeconds >= 0);
Assert.True(thread.TotalProcessorTime.TotalSeconds >= 0);
}
}
catch (Win32Exception)
{
// Win32Exception is thrown when getting threadinfo fails.
}
}
[Fact]
public void TestThreadCount()
{
int numOfThreads = 10;
CountdownEvent counter = new CountdownEvent(numOfThreads);
ManualResetEventSlim mre = new ManualResetEventSlim();
for (int i = 0; i < numOfThreads; i++)
{
new Thread(() => { counter.Signal(); mre.Wait(); }) { IsBackground = true }.Start();
}
counter.Wait();
try
{
Assert.True(Process.GetCurrentProcess().Threads.Count >= numOfThreads);
}
finally
{
mre.Set();
}
}
[Fact]
[PlatformSpecific(PlatformID.OSX)]
public void TestStartTimeProperty_OSX()
{
using (Process p = Process.GetCurrentProcess())
{
ProcessThreadCollection threads = p.Threads;
Assert.NotNull(threads);
Assert.NotEmpty(threads);
ProcessThread thread = threads[0];
Assert.NotNull(thread);
Assert.Throws<PlatformNotSupportedException>(() => thread.StartTime);
}
}
[Fact]
[PlatformSpecific(~PlatformID.OSX)] // OSX throws PNSE from StartTime
public async Task TestStartTimeProperty()
{
TimeSpan allowedWindow = TimeSpan.FromSeconds(1);
using (Process p = Process.GetCurrentProcess())
{
// Get the process' start time
DateTime startTime = p.StartTime.ToUniversalTime();
// Get the process' threads
ProcessThreadCollection threads = p.Threads;
Assert.NotNull(threads);
Assert.NotEmpty(threads);
// Get the current time
DateTime curTime = DateTime.UtcNow;
// Make sure each thread's start time is at least the process'
// start time and not beyond the current time.
Assert.All(
threads.Cast<ProcessThread>(),
t => Assert.InRange(t.StartTime.ToUniversalTime(), startTime - allowedWindow, curTime + allowedWindow));
// Now add a thread, and from that thread, while it's still alive, verify
// that there's at least one thread greater than the current time we previously grabbed.
await Task.Factory.StartNew(() =>
{
p.Refresh();
Assert.Contains(
p.Threads.Cast<ProcessThread>(),
t => t.StartTime.ToUniversalTime() >= curTime - allowedWindow);
}, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default);
}
}
[Fact]
public void TestStartAddressProperty()
{
Process p = Process.GetCurrentProcess();
try
{
if (p.Threads.Count != 0)
{
ProcessThread thread = p.Threads[0];
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
Assert.True((long)thread.StartAddress >= 0);
}
else
{
Assert.Equal(RuntimeInformation.IsOSPlatform(OSPlatform.OSX), thread.StartAddress == IntPtr.Zero);
}
}
}
finally
{
p.Dispose();
}
}
[Fact]
public void TestPriorityLevelProperty()
{
ProcessThread thread = _process.Threads[0];
if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
Assert.Throws<PlatformNotSupportedException>(() => thread.PriorityLevel);
Assert.Throws<PlatformNotSupportedException>(() => thread.PriorityLevel = ThreadPriorityLevel.AboveNormal);
return;
}
ThreadPriorityLevel originalPriority = thread.PriorityLevel;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
Assert.Throws<PlatformNotSupportedException>(() => thread.PriorityLevel = ThreadPriorityLevel.AboveNormal);
return;
}
try
{
thread.PriorityLevel = ThreadPriorityLevel.AboveNormal;
Assert.Equal(ThreadPriorityLevel.AboveNormal, thread.PriorityLevel);
}
finally
{
thread.PriorityLevel = originalPriority;
Assert.Equal(originalPriority, thread.PriorityLevel);
}
}
[Fact]
public void TestThreadStateProperty()
{
ProcessThread thread = _process.Threads[0];
if (ThreadState.Wait != thread.ThreadState)
{
Assert.Throws<InvalidOperationException>(() => thread.WaitReason);
}
}
}
}
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