/// <summary>
/// Waits until the process either finishes on its own or when user cancels the action.
/// </summary>
/// <param name="cancel">Cancellation token.</param>
/// <param name="killOnCancel">If <c>true</c> the process will be killed (with entire process tree) when this asynchronous action is canceled via <paramref name="cancel"/> token.</param>
/// <returns><see cref="Task"/>.</returns>
public async Task WaitForExitAsync(CancellationToken cancel, bool killOnCancel = false)
{
if (Process.HasExited)
{
return;
}
try
{
// If this token is already in the canceled state, the delegate will be run immediately and synchronously.
using (cancel.Register(() => ProcessExecutionTcs.TrySetCanceled()))
{
await ProcessExecutionTcs.Task;
}
}
catch (OperationCanceledException ex)
{
if (killOnCancel)
{
if (!Process.HasExited)
{
try
{
Process.Kill(entireProcessTree: true);
}
catch (Exception e)
{
Logger.LogError($"Could not kill process: {e}.");
}
}
}
throw new TaskCanceledException("Waiting for process exiting was canceled.", ex, cancel);
}
}
private void OnExited(object?sender, EventArgs?e)
{
ProcessExecutionTcs.TrySetResult(true);
}
