Merge branch 'master' into chromecast-config

# Conflicts:
#	Emby.Server.Implementations/ApplicationHost.cs

1 files changed, 4 insertions, 56 deletions

diff --git a/MediaBrowser.Common/Extensions/ProcessExtensions.cs b/MediaBrowser.Common/Extensions/ProcessExtensions.cs
index c3a7cb394..bb8ab130d 100644
--- a/MediaBrowser.Common/Extensions/ProcessExtensions.cs
+++ b/MediaBrowser.Common/Extensions/ProcessExtensions.cs
@@ -15,65 +15,13 @@ namespace MediaBrowser.Common.Extensions
         /// </summary>
         /// <param name="process">The process to wait for.</param>
         /// <param name="timeout">The duration to wait before cancelling waiting for the task.</param>
-        /// <returns>True if the task exited normally, false if the timeout elapsed before the process exited.</returns>
-        /// <exception cref="InvalidOperationException">If <see cref="Process.EnableRaisingEvents"/> is not set to true for the process.</exception>
-        public static async Task<bool> WaitForExitAsync(this Process process, TimeSpan timeout)
+        /// <returns>A task that will complete when the process has exited, cancellation has been requested, or an error occurs.</returns>
+        /// <exception cref="OperationCanceledException">The timeout ended.</exception>
+        public static async Task WaitForExitAsync(this Process process, TimeSpan timeout)
         {
             using (var cancelTokenSource = new CancellationTokenSource(timeout))
             {
-                return await WaitForExitAsync(process, cancelTokenSource.Token).ConfigureAwait(false);
-            }
-        }
-
-        /// <summary>
-        /// Asynchronously wait for the process to exit.
-        /// </summary>
-        /// <param name="process">The process to wait for.</param>
-        /// <param name="cancelToken">A <see cref="CancellationToken"/> to observe while waiting for the process to exit.</param>
-        /// <returns>True if the task exited normally, false if cancelled before the process exited.</returns>
-        public static async Task<bool> WaitForExitAsync(this Process process, CancellationToken cancelToken)
-        {
-            if (!process.EnableRaisingEvents)
-            {
-                throw new InvalidOperationException("EnableRisingEvents must be enabled to async wait for a task to exit.");
-            }
-
-            // Add an event handler for the process exit event
-            var tcs = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
-            process.Exited += (_, _) => tcs.TrySetResult(true);
-
-            // Return immediately if the process has already exited
-            if (process.HasExitedSafe())
-            {
-                return true;
-            }
-
-            // Register with the cancellation token then await
-            using (var cancelRegistration = cancelToken.Register(() => tcs.TrySetResult(process.HasExitedSafe())))
-            {
-                return await tcs.Task.ConfigureAwait(false);
-            }
-        }
-
-        /// <summary>
-        /// Gets a value indicating whether the associated process has been terminated using
-        /// <see cref="Process.HasExited"/>. This is safe to call even if there is no operating system process
-        /// associated with the <see cref="Process"/>.
-        /// </summary>
-        /// <param name="process">The process to check the exit status for.</param>
-        /// <returns>
-        /// True if the operating system process referenced by the <see cref="Process"/> component has
-        /// terminated, or if there is no associated operating system process; otherwise, false.
-        /// </returns>
-        private static bool HasExitedSafe(this Process process)
-        {
-            try
-            {
-                return process.HasExited;
-            }
-            catch (InvalidOperationException)
-            {
-                return true;
+                await process.WaitForExitAsync(cancelTokenSource.Token).ConfigureAwait(false);
             }
         }
     }