From 758d18a652a157240bd80e9e2db7b47688ba3d3b Mon Sep 17 00:00:00 2001
From: LukePulverenti Luke Pulverenti luke pulverenti
 <LukePulverenti Luke Pulverenti luke.pulverenti@gmail.com>
Date: Mon, 20 Aug 2012 19:53:32 -0400
Subject: Switched to low-level io methods for better performance

---
 MediaBrowser.Controller/IO/DirectoryWatchers.cs |  6 +-
 MediaBrowser.Controller/IO/FileData.cs          | 96 +++++++++++++++++++++++++
 2 files changed, 99 insertions(+), 3 deletions(-)
 create mode 100644 MediaBrowser.Controller/IO/FileData.cs

(limited to 'MediaBrowser.Controller/IO')

diff --git a/MediaBrowser.Controller/IO/DirectoryWatchers.cs b/MediaBrowser.Controller/IO/DirectoryWatchers.cs
index e4eadbbd0c..0a96990bfe 100644
--- a/MediaBrowser.Controller/IO/DirectoryWatchers.cs
+++ b/MediaBrowser.Controller/IO/DirectoryWatchers.cs
@@ -83,7 +83,7 @@ namespace MediaBrowser.Controller.IO
             List<string> paths = affectedPaths;
             affectedPaths = new List<string>();
 
-            await ProcessPathChanges(paths);
+            await ProcessPathChanges(paths).ConfigureAwait(false);
         }
 
         private async Task ProcessPathChanges(IEnumerable<string> paths)
@@ -105,11 +105,11 @@ namespace MediaBrowser.Controller.IO
                     return folder != null && folder.IsRoot;
                 }))
             {
-                await Kernel.Instance.ReloadRoot();
+                await Kernel.Instance.ReloadRoot().ConfigureAwait(false);
             }
             else
             {
-                await Task.WhenAll(itemsToRefresh.Select(i => Kernel.Instance.ReloadItem(i)));
+                await Task.WhenAll(itemsToRefresh.Select(i => Kernel.Instance.ReloadItem(i))).ConfigureAwait(false);
             }
         }
 
diff --git a/MediaBrowser.Controller/IO/FileData.cs b/MediaBrowser.Controller/IO/FileData.cs
new file mode 100644
index 0000000000..843a7e8fe3
--- /dev/null
+++ b/MediaBrowser.Controller/IO/FileData.cs
@@ -0,0 +1,96 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace MediaBrowser.Controller.IO
+{
+    public static class FileData
+    {
+        public const int MAX_PATH = 260;
+        public const int MAX_ALTERNATE = 14;
+
+        public static WIN32_FIND_DATA GetFileData(string fileName)
+        {
+            WIN32_FIND_DATA data;
+            IntPtr handle = FindFirstFile(fileName, out data);
+            if (handle == IntPtr.Zero)
+                throw new IOException("FindFirstFile failed");
+            FindClose(handle);
+            return data;
+        }
+
+        [DllImport("kernel32")]
+        private static extern IntPtr FindFirstFile(string fileName, out WIN32_FIND_DATA data);
+
+        [DllImport("kernel32")]
+        private static extern bool FindClose(IntPtr hFindFile);
+
+
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct FILETIME
+    {
+        public uint dwLowDateTime;
+        public uint dwHighDateTime;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
+    public struct WIN32_FIND_DATA
+    {
+        public FileAttributes dwFileAttributes;
+        public FILETIME ftCreationTime;
+        public FILETIME ftLastAccessTime;
+        public FILETIME ftLastWriteTime;
+        public int nFileSizeHigh;
+        public int nFileSizeLow;
+        public int dwReserved0;
+        public int dwReserved1;
+
+        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = FileData.MAX_PATH)]
+        public string cFileName;
+
+        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = FileData.MAX_ALTERNATE)]
+        public string cAlternate;
+
+        public bool IsDirectory
+        {
+            get
+            {
+                return dwFileAttributes.HasFlag(FileAttributes.Directory);
+            }
+        }
+
+        public DateTime CreationTime
+        {
+            get
+            {
+                return ParseFileTime(ftCreationTime);
+            }
+        }
+
+        public DateTime LastAccessTime
+        {
+            get
+            {
+                return ParseFileTime(ftLastAccessTime);
+            }
+        }
+
+        public DateTime LastWriteTime
+        {
+            get
+            {
+                return ParseFileTime(ftLastWriteTime);
+            }
+        }
+
+        private DateTime ParseFileTime(FILETIME filetime)
+        {
+            long highBits = filetime.dwHighDateTime;
+            highBits = highBits << 32;
+            return DateTime.FromFileTime(highBits + (long)filetime.dwLowDateTime);
+        }
+    }
+
+}
-- 
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