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
  22 namespace Tizen.Runtime
  23 {
  24     public class Preloader
  25     {
  26         const string preloadPath = "/usr/share/dotnet.tizen/preload/";
  27         public static void Preload()
  28         {
  29             string[] paths = Directory.GetFiles(preloadPath, "*.preload");
  30             Array.Sort(paths);
  31             foreach (string path in paths)
  32             {
  33                 string fileName = Path.GetFileName(path);
  34                 // ex) Tizen.preload / 0A.Tizen.preload / A0.Tizen.preload / .0.Tizen.preload / .00.Tizen.preload
  35                 if (!char.IsNumber(fileName, 0) || !char.IsNumber(fileName, 1))
  36                     continue;
  37
  38                 // ex) 000.Tizen.preload / 0.Tizen.preload
  39                 if (fileName.IndexOf('.') != 2)
  40                     continue;
  41
  42                 try
  43                 {
  44                     BindingFlags bindingFlag = BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;
  45                     foreach (string line in File.ReadLines(path))
  46                     {
  47                         if (line.StartsWith('#') || !line.Contains(".dll") || !line.Contains(' '))
  48                             continue;
  49
  50                         string[] getWord = line.Split(' ');
  51                         if (getWord.Length != 2)
  52                             continue;
  53
  54                         string assemblyStr = getWord[0].Replace(".dll", "");
  55                         string typenameStr = getWord[1];
  56                         string methodStr = "";
  57                         string parenthesis = "()";
  58
  59                         if (line.Contains(parenthesis))
  60                         {
  61                             string[] getMethod = typenameStr.Split('.');
  62                             methodStr = getMethod[getMethod.Length - 1].Replace(parenthesis, "");
  63                             typenameStr = typenameStr.Replace("." + methodStr + parenthesis, "");
  64                         }
  65
  66                         try
  67                         {
  68                             if (assemblyStr == "")
  69                                 continue;
  70
  71                             Assembly asm = AssemblyLoadContext.Default.LoadFromAssemblyName(new AssemblyName(assemblyStr));
  72                             if (asm == null || typenameStr == "")
  73                                 continue;
  74
  75                             Type type = asm.GetType(typenameStr);
  76                             if (type == null || methodStr == "")
  77                                 continue;
  78
  79                             MethodInfo method = type.GetMethod(methodStr, bindingFlag);
  80                             if (method == null)
  81                                 continue;
  82
  83                             method.Invoke(null, null);
  84                         }
  85                         catch (Exception e)
  86                         {
  87                             Console.WriteLine(e.ToString());
  88                             Console.WriteLine("[ERROR] Failed to '" + line + "' preload");
  89                         }
  90                     }
  91                 }
  92                 catch (IOException e)
  93                 {
  94                     Console.WriteLine(e.ToString());
  95                     Console.WriteLine("[ERROR] Failed to " + path + " file open");
  96                 }
  97                 finally
  98                 {
  99                     Console.WriteLine("Success to preload : " + fileName);
 100                 }
 101             }
 102
 103             GC.Collect();
 104             GC.WaitForPendingFinalizers();
 105         }
 106     }
 107 }