mono/tests/marshal2.cs

   1 //
   2 // Tests for Marshal.StructureToPtr and PtrToStructure
   3 //
   4
   5 using System;
   6 using System.Text;
   7 using System.Runtime.InteropServices;
   8
   9 public class Tests {
  10
  11
  12         [StructLayout (LayoutKind.Sequential)]
  13         public class SimpleObj {
  14                 public int a;
  15                 public int b;
  16
  17                 public void test () {}
  18         }
  19
  20         [StructLayout (LayoutKind.Sequential)]
  21         public struct SimpleStruct2 {
  22                 public int a;
  23                 public int b;
  24         }
  25
  26         [StructLayout (LayoutKind.Sequential, CharSet=CharSet.Ansi)]
  27         public struct SimpleStruct {
  28                 public int a;
  29                 public bool bool1;
  30                 public bool bool2;
  31                 public int b;
  32                 [MarshalAs (UnmanagedType.ByValArray, SizeConst=2)] public short[] a1;
  33                 [MarshalAs (UnmanagedType.ByValTStr, SizeConst=4)] public string s1;
  34                 public SimpleStruct2 emb1;
  35                 public SimpleObj emb2;
  36                 public string s2;
  37                 public double x;
  38                 [MarshalAs (UnmanagedType.ByValArray, SizeConst=2)]
  39                 public char[] a2;
  40         }
  41
  42         [StructLayout (LayoutKind.Sequential, CharSet=CharSet.Ansi)]
  43         public struct ByValTStrStruct {
  44                 [MarshalAs (UnmanagedType.ByValTStr, SizeConst=4)] public string s1;
  45                 public int i;
  46         }
  47
  48         [StructLayout (LayoutKind.Sequential, CharSet=CharSet.Unicode)]
  49         public struct ByValWStrStruct {
  50                 [MarshalAs (UnmanagedType.ByValTStr, SizeConst=4)] public string s1;
  51                 public int i;
  52         }
  53
  54         [StructLayout (LayoutKind.Sequential, Pack=1)]
  55         public struct PackStruct1 {
  56                 float f;
  57         }
  58
  59         [StructLayout (LayoutKind.Sequential)]
  60         public struct PackStruct2 {
  61                 byte b;
  62                 PackStruct1 s;
  63         }
  64
  65         [StructLayout (LayoutKind.Sequential)]
  66         struct InvalidArrayForMarshalingStruct
  67         {
  68                 // Missing the following needed directive
  69                 // [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
  70                 public readonly char[] CharArray;
  71         }
  72
  73         [StructLayout(LayoutKind.Sequential)]
  74         struct TwoDimensionalArrayStruct
  75         {
  76                 public TwoDimensionalArrayStruct(int[,] vals)
  77                 {
  78                         TwoDimensionalArray = vals;
  79                 }
  80
  81                 [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
  82                 public readonly int[,] TwoDimensionalArray;
  83         }
  84
  85         public unsafe static int Main (String[] args) {
  86                 if (TestDriver.RunTests (typeof (Tests), args) != 0)
  87                         return 34;
  88                 return 0;
  89         }
  90
  91         public static int test_0_structure_to_ptr () {
  92                 SimpleStruct ss = new SimpleStruct ();
  93                 int size = Marshal.SizeOf (typeof (SimpleStruct));
  94
  95                 //if (size != 52)
  96                 //return 1;
  97
  98                 IntPtr p = Marshal.AllocHGlobal (size);
  99                 ss.a = 1;
 100                 ss.bool1 = true;
 101                 ss.bool2 = false;
 102                 ss.b = 2;
 103                 ss.a1 = new short [2];
 104                 ss.a1 [0] = 6;
 105                 ss.a1 [1] = 5;
 106                 ss.s1 = "abcd";
 107                 ss.emb1 = new SimpleStruct2 ();
 108                 ss.emb1.a = 3;
 109                 ss.emb1.b = 4;
 110                 ss.emb2 = new SimpleObj ();
 111                 ss.emb2.a = 10;
 112                 ss.emb2.b = 11;
 113                 ss.s2 = "just a test";
 114                 ss.x = 1.5;
 115                 ss.a2 = new char [2];
 116                 ss.a2 [0] = 'a';
 117                 ss.a2 [1] = 'b';
 118
 119                 Marshal.StructureToPtr (ss, p, false);
 120                 Type t = ss.GetType ();
 121
 122                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "a")) != 1)
 123                         return 1;
 124                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "bool1")) != 1)
 125                         return 2;
 126                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "bool2")) != 0)
 127                         return 3;
 128                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "b")) != 2)
 129                         return 4;
 130                 if (Marshal.ReadInt16 (p, 16) != 6)
 131                         return 5;
 132                 if (Marshal.ReadInt16 (p, 18) != 5)
 133                         return 6;
 134                 if (Marshal.ReadByte (p, 20) != 97)
 135                         return 7;
 136                 if (Marshal.ReadByte (p, 21) != 98)
 137                         return 8;
 138                 if (Marshal.ReadByte (p, 22) != 99)
 139                         return 9;
 140                 if (Marshal.ReadByte (p, 23) != 0)
 141                         return 10;
 142                 if (Marshal.ReadInt32 (p, 24) != 3)
 143                         return 11;
 144                 if (Marshal.ReadInt32 (p, 28) != 4)
 145                         return 12;
 146                 if (Marshal.ReadInt32 (p, 32) != 10)
 147                         return 13;
 148                 if (Marshal.ReadInt32 (p, 36) != 11)
 149                         return 14;
 150                 if (Marshal.ReadByte (p, (int)Marshal.OffsetOf (t, "a2")) != 97)
 151                         return 15;
 152                 if (Marshal.ReadByte (p, (int)Marshal.OffsetOf (t, "a2") + 1) != 98)
 153                         return 16;
 154
 155                 SimpleStruct cp = (SimpleStruct)Marshal.PtrToStructure (p, ss.GetType ());
 156
 157                 if (cp.a != 1)
 158                         return 16;
 159
 160                 if (cp.bool1 != true)
 161                         return 17;
 162
 163                 if (cp.bool2 != false)
 164                         return 18;
 165
 166                 if (cp.b != 2)
 167                         return 19;
 168
 169                 if (cp.a1 [0] != 6)
 170                         return 20;
 171
 172                 if (cp.a1 [1] != 5)
 173                         return 21;
 174
 175                 if (cp.s1 != "abc")
 176                         return 22;
 177
 178                 if (cp.emb1.a != 3)
 179                         return 23;
 180
 181                 if (cp.emb1.b != 4)
 182                         return 24;
 183
 184                 if (cp.emb2.a != 10)
 185                         return 25;
 186
 187                 if (cp.emb2.b != 11)
 188                         return 26;
 189
 190                 if (cp.s2 != "just a test")
 191                         return 27;
 192
 193                 if (cp.x != 1.5)
 194                         return 28;
 195
 196                 if (cp.a2 [0] != 'a')
 197                         return 29;
 198
 199                 if (cp.a2 [1] != 'b')
 200                         return 30;
 201                 return 0;
 202         }
 203
 204         [StructLayout(LayoutKind.Sequential, Pack = 1, CharSet = CharSet.Unicode)]
 205         public struct Struct1
 206         {
 207                 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
 208         public string Field1;
 209                 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)]
 210         public string Field2;
 211                 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
 212         public string Field3;
 213         }
 214
 215         public static int test_0_byvaltstr () {
 216                 ByValTStrStruct s = new ByValTStrStruct ();
 217
 218                 IntPtr p2 = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (ByValTStrStruct)));
 219                 Marshal.StructureToPtr(s, p2, false);
 220
 221                 /* Check that the ByValTStr is initialized correctly */
 222                 for (int i = 0; i < 4; ++i)
 223                         if (Marshal.ReadByte (p2, i) != 0)
 224                                 return 31;
 225
 226                 s.s1 = "ABCD";
 227                 s.i = 55;
 228
 229                 Marshal.StructureToPtr(s, p2, false);
 230
 231                 ByValTStrStruct s2 = (ByValTStrStruct)Marshal.PtrToStructure (p2, typeof (ByValTStrStruct));
 232
 233                 /* The fourth char is lost because of null-termination */
 234                 if (s2.s1 != "ABC")
 235                         return 32;
 236
 237                 if (s2.i != 55)
 238                         return 33;
 239
 240                 // Check that decoding also respects the size, even when there is no null terminator
 241                 byte[] data = Encoding.ASCII.GetBytes ("ABCDXXXX");
 242                 int size = Marshal.SizeOf (typeof (ByValTStrStruct));
 243                 IntPtr buffer = Marshal.AllocHGlobal (size);
 244                 Marshal.Copy (data, 0, buffer, size);
 245
 246                 s2 = (ByValTStrStruct)Marshal.PtrToStructure (buffer, typeof (ByValTStrStruct));
 247                 if (s2.s1 != "ABC")
 248                         return 34;
 249
 250                 return 0;
 251         }
 252
 253         public static int test_0_byvaltstr_unicode () {
 254                 ByValWStrStruct s = new ByValWStrStruct ();
 255
 256                 IntPtr p2 = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (ByValWStrStruct)));
 257                 Marshal.StructureToPtr(s, p2, false);
 258
 259                 /* Check that the ByValWStr is initialized correctly */
 260                 for (int i = 0; i < 8; ++i)
 261                         if (Marshal.ReadByte (p2, i) != 0)
 262                                 return 31;
 263
 264                 s.s1 = "ABCD";
 265                 s.i = 55;
 266
 267                 Marshal.StructureToPtr(s, p2, false);
 268
 269                 ByValWStrStruct s2 = (ByValWStrStruct)Marshal.PtrToStructure (p2, typeof (ByValWStrStruct));
 270
 271                 /* The fourth char is lost because of null-termination */
 272                 if (s2.s1 != "ABC")
 273                         return 32;
 274
 275                 if (s2.i != 55)
 276                         return 33;
 277                 return 0;
 278         }
 279
 280         public static int test_0_byvaltstr_max_size () {
 281                 string buffer = "12345678123456789012345678901234";
 282
 283                 IntPtr ptr = Marshal.StringToBSTR (buffer);
 284
 285                 Struct1 data = (Struct1)Marshal.PtrToStructure (ptr, typeof (Struct1));
 286                 if (data.Field1 != "12345678")
 287                         return 1;
 288                 if (data.Field2 != "1234567890")
 289                         return 2;
 290                 if (data.Field3 != "12345678901234")
 291                         return 3;
 292                 return 0;
 293         }
 294
 295         // Check that the 'Pack' directive on a struct changes the min alignment of the struct as well (#12110)
 296         public static int test_0_struct_pack () {
 297                 if (Marshal.OffsetOf (typeof (PackStruct2), "s") != new IntPtr (1))
 298                         return 1;
 299                 return 0;
 300         }
 301
 302         public static int test_0_generic_ptr_to_struct () {
 303                 int size = Marshal.SizeOf (typeof (SimpleStruct2));
 304                 IntPtr p = Marshal.AllocHGlobal (size);
 305
 306                 Marshal.WriteInt32 (p, 0, 1); //a
 307                 Marshal.WriteInt32 (p, 4, 2); //a
 308
 309                 var s = Marshal.PtrToStructure<SimpleStruct2> (p);
 310
 311                 if (s.a != 1)
 312                         return 1;
 313                 if (s.b != 2)
 314                         return 2;
 315                 return 0;
 316         }
 317
 318         public static int test_0_invalid_array_throws () {
 319                 var ptr = Marshal.AllocHGlobal(Marshal.SizeOf (typeof (InvalidArrayForMarshalingStruct)));
 320                 try {
 321                         Marshal.PtrToStructure (ptr, typeof (InvalidArrayForMarshalingStruct));
 322                 }
 323                 catch (MarshalDirectiveException e) {
 324                         return 0;
 325                 }
 326                 return 1;
 327         }
 328
 329         public static int test_0_multidimentional_arrays () {
 330                 var structToMarshal = new TwoDimensionalArrayStruct (new[, ] { {1, 2, 3}, {4, 5, 6} });
 331                 var ptr = Marshal.AllocHGlobal (Marshal.SizeOf (structToMarshal));
 332                 Marshal.StructureToPtr (structToMarshal, ptr, false);
 333                 unsafe {
 334                         if(((int*)ptr)[4] == 5)
 335                                 return 0;
 336                 }
 337                 return 1;
 338         }
 339
 340         struct GenericStruct<T>
 341         {
 342                 public T t1;
 343                 public T t2;
 344                 public bool b; // make struct non-blittable
 345         }
 346
 347         struct NonGenericStruct
 348         {
 349                 public int t1;
 350                 public int t2;
 351                 public bool b; // make struct non-blittable
 352         }
 353
 354         struct StructWithGenericField
 355         {
 356                 public GenericStruct<int> gs;
 357         }
 358
 359         struct StructWithNonGenericField
 360         {
 361                 public NonGenericStruct ngs;
 362         }
 363
 364         public static int test_0_marshal_generic_struct () {
 365                 var structToMarshal = new StructWithNonGenericField () { ngs = new NonGenericStruct {t1 = 1, t2 =2} };
 366                 var ptr = Marshal.AllocHGlobal (Marshal.SizeOf (structToMarshal));
 367                 Marshal.StructureToPtr(structToMarshal, ptr, false);
 368                 var genericStruct = (StructWithGenericField)Marshal.PtrToStructure(ptr, typeof(StructWithGenericField));
 369                 if (genericStruct.gs.t1 == 1)
 370                         return 0;
 371
 372                 return 1;
 373         }
 374 }