Managed/Tizen.Runtime/Preloader.cs

   1 /*
   2  * Copyright (c) 2019 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18 using System.IO;
  19 using System.Reflection;
  20 using System.Runtime.Loader;
  21 using System.Globalization;
  22 using System.Runtime.CompilerServices;
  23
  24 namespace Tizen.Runtime
  25 {
  26     public class Preloader
  27     {
  28         const string preloadPath = "/usr/share/dotnet.tizen/preload/";
  29
  30         // If current culture's casing for ASCII is the same as invariant, it can take a fast path
  31         // than calling out to the OS for culture-aware casing.
  32         // However, in certain languages, the following function may be significantly slowed down.
  33         // To avoid that kind situation, call it in advance on the candidate process.
  34         [MethodImpl(MethodImplOptions.NoOptimization | MethodImplOptions.NoInlining)]
  35         private static void CheckAsciiCasing()
  36         {
  37             _ = CultureInfo.CurrentCulture.CompareInfo.Compare("abcdefghijklmnopqrstuvwxyz", "ABCDEFGHIJKLMNOPQRSTUVWXYZ", CompareOptions.IgnoreCase);
  38             _ = "abc".ToUpper().ToLower();
  39         }
  40
  41         public static void Preload()
  42         {
  43             CheckAsciiCasing();
  44
  45             if (!Directory.Exists(preloadPath))
  46                 return;
  47
  48             string[] paths = Directory.GetFiles(preloadPath, "*.preload");
  49             Array.Sort(paths);
  50             foreach (string path in paths)
  51             {
  52                 string fileName = Path.GetFileName(path);
  53
  54                 // GetFileName() can return NULL
  55                 if (fileName == null)
  56                     continue;
  57
  58                 // ex) Tizen.preload / 0A.Tizen.preload / A0.Tizen.preload / .0.Tizen.preload / .00.Tizen.preload
  59                 if (!char.IsNumber(fileName, 0) || !char.IsNumber(fileName, 1))
  60                     continue;
  61
  62                 // ex) 000.Tizen.preload / 0.Tizen.preload
  63                 if (fileName.IndexOf('.') != 2)
  64                     continue;
  65
  66                 string value = System.Environment.GetEnvironmentVariable("TIZEN_UIFW");
  67                 // if TIZEN_UIFW is not set, do not preload UI related dll
  68                 if (value == null && (fileName.Contains("NUI") || fileName.Contains("ElmSharp") || fileName.Contains("XSF") ))
  69                     continue;
  70                 else if (value == "ElmSharp" && fileName.Contains("NUI"))
  71                     continue;
  72                 else if (value == "NUI" && (fileName.Contains("ElmSharp") || fileName.Contains("XSF")))
  73                     continue;
  74
  75                 try
  76                 {
  77                     Console.WriteLine("Start preload : " + fileName);
  78                     BindingFlags bindingFlag = BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;
  79                     foreach (string line in File.ReadLines(path))
  80                     {
  81                         if (line.StartsWith('#') || !line.Contains(".dll") || !line.Contains(' '))
  82                             continue;
  83
  84                         string[] getWord = line.Split(' ');
  85                         if (getWord.Length != 2)
  86                             continue;
  87
  88                         string assemblyStr = getWord[0].Replace(".dll", "");
  89                         string typenameStr = getWord[1];
  90                         string methodStr = "";
  91                         string parenthesis = "()";
  92
  93                         if (line.Contains(parenthesis))
  94                         {
  95                             string[] getMethod = typenameStr.Split('.');
  96                             methodStr = getMethod[getMethod.Length - 1].Replace(parenthesis, "");
  97                             typenameStr = typenameStr.Replace("." + methodStr + parenthesis, "");
  98                         }
  99
 100                         if (assemblyStr == "")
 101                         {
 102                             Console.WriteLine("[Warning] Skip the '" + line + "' in " + fileName);
 103                             continue;
 104                         }
 105
 106                         try
 107                         {
 108                             Assembly asm = AssemblyLoadContext.Default.LoadFromAssemblyName(new AssemblyName(assemblyStr));
 109                             if (asm == null)
 110                             {
 111                                 Console.WriteLine("[Warning] Check the '" + line + "' in " + fileName);
 112                                 continue;
 113                             }
 114
 115                             if (typenameStr != "" && !typenameStr.Contains(parenthesis))
 116                             {
 117                                 Type type = asm.GetType(typenameStr);
 118                                 if (type == null)
 119                                 {
 120                                     Console.WriteLine("[Warning] Check the '" + line + "' in " + fileName);
 121                                     continue;
 122                                 }
 123
 124                                 if (methodStr != "")
 125                                 {
 126                                     MethodInfo method = type.GetMethod(methodStr, bindingFlag);
 127                                     if (method == null)
 128                                     {
 129                                         Console.WriteLine("[Warning] Check the '" + line + "' in " + fileName);
 130                                         continue;
 131                                     }
 132                                     method.Invoke(null, null);
 133                                 }
 134                             }
 135                         }
 136                         catch
 137                         {
 138                             Console.WriteLine("[Error] Fail the '" + line + "' in " + fileName);
 139                         }
 140                     }
 141                 }
 142                 catch (IOException e)
 143                 {
 144                     Console.WriteLine(e.ToString());
 145                     Console.WriteLine("[Error] Failed to open file : " + fileName);
 146                 }
 147             }
 148
 149             GC.Collect();
 150             GC.WaitForPendingFinalizers();
 151
 152             Profiler.SetCandidateProcessProfile();
 153         }
 154     }
 155 }