在C#中暂停进程

如何在C#中暂停整个过程(就像我点击Suspend时的Process Explorer一样).

我正在使用Process.Start启动Process,并且在某个事件上,我想暂停该进程以便能够对其"快照"进行一些调查.

这是我的建议:

 [Flags]
    public enum ThreadAccess : int
    {
      TERMINATE = (0x0001),
      SUSPEND_RESUME = (0x0002),
      GET_CONTEXT = (0x0008),
      SET_CONTEXT = (0x0010),
      SET_INFORMATION = (0x0020),
      QUERY_INFORMATION = (0x0040),
      SET_THREAD_TOKEN = (0x0080),
      IMPERSONATE = (0x0100),
      DIRECT_IMPERSONATION = (0x0200)
    }

    [DllImport("kernel32.dll")]
    static extern IntPtr OpenThread(ThreadAccess dwDesiredAccess, bool bInheritHandle, uint dwThreadId);
    [DllImport("kernel32.dll")]
    static extern uint SuspendThread(IntPtr hThread);
    [DllImport("kernel32.dll")]
    static extern int ResumeThread(IntPtr hThread);
    [DllImport("kernel32", CharSet = CharSet.Auto,SetLastError = true)]
    static extern bool CloseHandle(IntPtr handle);


private static void SuspendProcess(int pid)
{
  var process = Process.GetProcessById(pid);

  if (process.ProcessName == string.Empty)
    return;

  foreach (ProcessThread pT in process.Threads)
  {
    IntPtr pOpenThread = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)pT.Id);

    if (pOpenThread == IntPtr.Zero)
    {
      continue;
    }

    SuspendThread(pOpenThread);

    CloseHandle(pOpenThread);
  }
}

public static void ResumeProcess(int pid)
{
  var process = Process.GetProcessById(pid);

  if (process.ProcessName == string.Empty)
    return;

  foreach (ProcessThread pT in process.Threads)
  {
    IntPtr pOpenThread = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)pT.Id);

    if (pOpenThread == IntPtr.Zero)
    {
      continue;
    }

    var suspendCount = 0;
    do
    {
      suspendCount = ResumeThread(pOpenThread);
    } while (suspendCount > 0);

    CloseHandle(pOpenThread);
  }
}

感谢马格努斯

在包含Flags之后,我将代码修改为我项目中的扩展方法.我现在可以使用了

var process = Process.GetProcessById(param.PId);
process.Suspend();

以下是可能感兴趣的人的代码.

public static class ProcessExtension
{
    [DllImport("kernel32.dll")]
    static extern IntPtr OpenThread(ThreadAccess dwDesiredAccess, bool bInheritHandle, uint dwThreadId);
    [DllImport("kernel32.dll")]
    static extern uint SuspendThread(IntPtr hThread);
    [DllImport("kernel32.dll")]
    static extern int ResumeThread(IntPtr hThread);

    public static void Suspend(this Process process)
    {
        foreach (ProcessThread thread in process.Threads)
        {
            var pOpenThread = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)thread.Id);
            if (pOpenThread == IntPtr.Zero)
            {
                break;
            }
            SuspendThread(pOpenThread);
        }
    }
    public static void Resume(this Process process)
    {
        foreach (ProcessThread thread in process.Threads)
        {
            var pOpenThread = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)thread.Id);
            if (pOpenThread == IntPtr.Zero)
            {
                break;
            }
            ResumeThread(pOpenThread);
        }
    }
}

我有一个实用工具,我用来通常暂停/杀死/列出一个进程.完整的源代码是Git