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Remove process suspend #4586

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merged 2 commits into from
Aug 4, 2023
Merged

Remove process suspend #4586

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0310bb0
Remove process suspend
nohwnd Jun 30, 2023
5451a34
Merge branch 'main' into remove-process-suspend
nohwnd Aug 4, 2023
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42 changes: 5 additions & 37 deletions src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcessCodeMethods.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,8 @@ public static void Suspend(this Process process)

if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
SuspendWindows(process);
// There is no supported or documented API to suspend a process. If there was you should call it here.
// SuspendWindows(process);
}
else
{
Expand Down Expand Up @@ -70,40 +71,6 @@ public static List<ProcessTreeNode> GetProcessTree(this Process process)
return new List<ProcessTreeNode> { new ProcessTreeNode { Process = process, Level = 0 } }.Concat(acc.Where(a => a.Level > 0)).ToList();
}

internal static void SuspendWindows(Process process)
{
EqtTrace.Verbose($"ProcessCodeMethods.Suspend: Suspending process {process.Id} - {process.ProcessName}.");
NtSuspendProcess(process.Handle);
}

internal static void SuspendLinuxMacOs(Process process)
{
try
{
var output = new StringBuilder();
var err = new StringBuilder();
Process ps = new();
ps.StartInfo.FileName = "kill";
ps.StartInfo.Arguments = $"-STOP {process.Id}";
ps.StartInfo.UseShellExecute = false;
ps.StartInfo.RedirectStandardOutput = true;
ps.OutputDataReceived += (_, e) => output.Append(e.Data);
ps.ErrorDataReceived += (_, e) => err.Append(e.Data);
ps.Start();
ps.BeginOutputReadLine();
ps.WaitForExit(5_000);

if (!err.ToString().IsNullOrWhiteSpace())
{
EqtTrace.Verbose($"ProcessCodeMethods.SuspendLinuxMacOs: Error suspending process {process.Id} - {process.ProcessName}, {err}.");
}
}
catch (Exception ex)
{
EqtTrace.Verbose($"ProcessCodeMethods.GetParentPidMacOs: Error getting parent of process {process.Id} - {process.ProcessName}, {ex}.");
}
}

/// <summary>
/// Returns the parent id of a process or -1 if it fails.
/// </summary>
Expand Down Expand Up @@ -248,6 +215,7 @@ private struct ProcessBasicInformation
int processInformationLength,
out int returnLength);

[DllImport("ntdll.dll", SetLastError = true)]
private static extern IntPtr NtSuspendProcess(IntPtr processHandle);
// This call is undocumented api, and should not be used.
//[DllImport("ntdll.dll", SetLastError = true)]
//private static extern IntPtr NtSuspendProcess(IntPtr processHandle);
}