Mercurial > projects > ldc
annotate tango/lib/compiler/llvmdc/genobj.d @ 272:94ef6d63f7bb trunk
[svn r293] Fixed: object.TypeInfo_Struct implementation was incorrect.
| author | lindquist |
|---|---|
| date | Wed, 18 Jun 2008 22:27:02 +0200 |
| parents | 1e6e2b5d5bfe |
| children | 665b81613475 |
| rev | line source |
|---|---|
| 132 | 1 /** |
| 2 * Part of the D programming language runtime library. | |
| 3 * Forms the symbols available to all D programs. Includes | |
| 4 * Object, which is the root of the class object hierarchy. | |
| 5 * | |
| 6 * This module is implicitly imported. | |
| 7 * Macros: | |
| 8 * WIKI = Object | |
| 9 */ | |
| 10 | |
| 11 /* | |
| 12 * Copyright (C) 2004-2007 by Digital Mars, www.digitalmars.com | |
| 13 * Written by Walter Bright | |
| 14 * | |
| 15 * This software is provided 'as-is', without any express or implied | |
| 16 * warranty. In no event will the authors be held liable for any damages | |
| 17 * arising from the use of this software. | |
| 18 * | |
| 19 * Permission is granted to anyone to use this software for any purpose, | |
| 20 * including commercial applications, and to alter it and redistribute it | |
| 21 * freely, in both source and binary form, subject to the following | |
| 22 * restrictions: | |
| 23 * | |
| 24 * o The origin of this software must not be misrepresented; you must not | |
| 25 * claim that you wrote the original software. If you use this software | |
| 26 * in a product, an acknowledgment in the product documentation would be | |
| 27 * appreciated but is not required. | |
| 28 * o Altered source versions must be plainly marked as such, and must not | |
| 29 * be misrepresented as being the original software. | |
| 30 * o This notice may not be removed or altered from any source | |
| 31 * distribution. | |
| 32 */ | |
| 33 | |
| 34 /* | |
| 35 * Modified by Sean Kelly <sean@f4.ca> for use with Tango. | |
| 36 */ | |
| 37 | |
| 38 module object; | |
| 39 | |
|
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40 //debug=PRINTF |
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41 |
| 132 | 42 private |
| 43 { | |
|
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44 import tango.stdc.string; // : memcmp, memcpy, memmove; |
| 132 | 45 import tango.stdc.stdlib; // : calloc, realloc, free; |
| 46 import util.string; | |
| 47 debug(PRINTF) import tango.stdc.stdio; // : printf; | |
| 48 | |
| 49 extern (C) void onOutOfMemoryError(); | |
| 50 extern (C) Object _d_newclass(ClassInfo ci); | |
| 51 } | |
| 52 | |
| 53 // NOTE: For some reason, this declaration method doesn't work | |
| 54 // in this particular file (and this file only). It must | |
| 55 // be a DMD thing. | |
| 56 //alias typeof(int.sizeof) size_t; | |
| 57 //alias typeof(cast(void*)0 - cast(void*)0) ptrdiff_t; | |
| 58 | |
| 59 version( X86_64 ) | |
| 60 { | |
| 61 alias ulong size_t; | |
| 62 alias long ptrdiff_t; | |
| 63 } | |
| 64 else | |
| 65 { | |
| 66 alias uint size_t; | |
| 67 alias int ptrdiff_t; | |
| 68 } | |
| 69 | |
| 70 alias size_t hash_t; | |
| 71 | |
| 72 /** | |
| 73 * All D class objects inherit from Object. | |
| 74 */ | |
| 75 class Object | |
| 76 { | |
| 77 /** | |
| 78 * Convert Object to a human readable string. | |
| 79 */ | |
| 80 char[] toString() | |
| 81 { | |
| 82 return this.classinfo.name; | |
| 83 } | |
| 84 | |
| 85 /** | |
| 86 * Compute hash function for Object. | |
| 87 */ | |
| 88 hash_t toHash() | |
| 89 { | |
| 90 // BUG: this prevents a compacting GC from working, needs to be fixed | |
| 91 return cast(hash_t)cast(void*)this; | |
| 92 } | |
| 93 | |
| 94 /** | |
| 95 * Compare with another Object obj. | |
| 96 * Returns: | |
| 97 * $(TABLE | |
| 98 * $(TR $(TD this < obj) $(TD < 0)) | |
| 99 * $(TR $(TD this == obj) $(TD 0)) | |
| 100 * $(TR $(TD this > obj) $(TD > 0)) | |
| 101 * ) | |
| 102 */ | |
| 103 int opCmp(Object o) | |
| 104 { | |
| 105 // BUG: this prevents a compacting GC from working, needs to be fixed | |
| 106 //return cast(int)cast(void*)this - cast(int)cast(void*)o; | |
| 107 | |
| 108 //throw new Exception("need opCmp for class " ~ this.classinfo.name); | |
| 109 return this !is o; | |
| 110 } | |
| 111 | |
| 112 /** | |
| 113 * Returns !=0 if this object does have the same contents as obj. | |
| 114 */ | |
| 115 int opEquals(Object o) | |
| 116 { | |
| 117 return cast(int)(this is o); | |
| 118 } | |
| 119 | |
| 120 interface Monitor | |
| 121 { | |
| 122 void lock(); | |
| 123 void unlock(); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 /** | |
| 128 * Information about an interface. | |
|
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129 * When an object is accessed via an interface, an Interface* appears as the |
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130 * first entry in its vtbl. |
| 132 | 131 */ |
| 132 struct Interface | |
| 133 { | |
| 134 ClassInfo classinfo; /// .classinfo for this interface (not for containing class) | |
| 135 void*[] vtbl; | |
| 136 ptrdiff_t offset; /// offset to Interface 'this' from Object 'this' | |
| 137 } | |
| 138 | |
| 139 /** | |
| 140 * Runtime type information about a class. Can be retrieved for any class type | |
| 141 * or instance by using the .classinfo property. | |
| 142 * A pointer to this appears as the first entry in the class's vtbl[]. | |
| 143 */ | |
| 144 class ClassInfo : Object | |
| 145 { | |
| 146 byte[] init; /** class static initializer | |
| 147 * (init.length gives size in bytes of class) | |
| 148 */ | |
| 149 char[] name; /// class name | |
| 150 void*[] vtbl; /// virtual function pointer table | |
| 151 Interface[] interfaces; /// interfaces this class implements | |
| 152 ClassInfo base; /// base class | |
| 153 void* destructor; | |
| 154 void function(Object) classInvariant; | |
| 155 uint flags; | |
| 156 // 1: // IUnknown | |
| 157 // 2: // has no possible pointers into GC memory | |
| 158 // 4: // has offTi[] member | |
| 159 // 8: // has constructors | |
| 160 void* deallocator; | |
| 161 OffsetTypeInfo[] offTi; | |
| 162 void function(Object) defaultConstructor; // default Constructor | |
| 163 | |
| 164 /** | |
| 165 * Search all modules for ClassInfo corresponding to classname. | |
| 166 * Returns: null if not found | |
| 167 */ | |
| 168 static ClassInfo find(char[] classname) | |
| 169 { | |
| 170 foreach (m; ModuleInfo) | |
| 171 { | |
| 172 //writefln("module %s, %d", m.name, m.localClasses.length); | |
| 173 foreach (c; m.localClasses) | |
| 174 { | |
| 175 //writefln("\tclass %s", c.name); | |
| 176 if (c.name == classname) | |
| 177 return c; | |
| 178 } | |
| 179 } | |
| 180 return null; | |
| 181 } | |
| 182 | |
| 183 /** | |
| 184 * Create instance of Object represented by 'this'. | |
| 185 */ | |
| 186 Object create() | |
| 187 { | |
| 188 if (flags & 8 && !defaultConstructor) | |
| 189 return null; | |
| 190 Object o = _d_newclass(this); | |
| 191 if (flags & 8 && defaultConstructor) | |
| 192 { | |
| 193 defaultConstructor(o); | |
| 194 } | |
| 195 return o; | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 /** | |
| 200 * Array of pairs giving the offset and type information for each | |
| 201 * member in an aggregate. | |
| 202 */ | |
| 203 struct OffsetTypeInfo | |
| 204 { | |
| 205 size_t offset; /// Offset of member from start of object | |
| 206 TypeInfo ti; /// TypeInfo for this member | |
| 207 } | |
| 208 | |
| 209 /** | |
| 210 * Runtime type information about a type. | |
| 211 * Can be retrieved for any type using a | |
| 212 * <a href="../expression.html#typeidexpression">TypeidExpression</a>. | |
| 213 */ | |
| 214 class TypeInfo | |
| 215 { | |
| 216 hash_t toHash() | |
| 217 { hash_t hash; | |
| 218 | |
| 219 foreach (char c; this.toString()) | |
| 220 hash = hash * 9 + c; | |
| 221 return hash; | |
| 222 } | |
| 223 | |
| 224 int opCmp(Object o) | |
| 225 { | |
| 226 if (this is o) | |
| 227 return 0; | |
| 228 TypeInfo ti = cast(TypeInfo)o; | |
| 229 if (ti is null) | |
| 230 return 1; | |
| 231 return stringCompare(this.toString(), ti.toString()); | |
| 232 } | |
| 233 | |
| 234 int opEquals(Object o) | |
| 235 { | |
| 236 /* TypeInfo instances are singletons, but duplicates can exist | |
| 237 * across DLL's. Therefore, comparing for a name match is | |
| 238 * sufficient. | |
| 239 */ | |
| 240 if (this is o) | |
| 241 return 1; | |
| 242 TypeInfo ti = cast(TypeInfo)o; | |
| 243 return cast(int)(ti && this.toString() == ti.toString()); | |
| 244 } | |
| 245 | |
| 246 /// Returns a hash of the instance of a type. | |
| 247 hash_t getHash(void *p) { return cast(hash_t)p; } | |
| 248 | |
| 249 /// Compares two instances for equality. | |
| 250 int equals(void *p1, void *p2) { return cast(int)(p1 == p2); } | |
| 251 | |
| 252 /// Compares two instances for <, ==, or >. | |
| 253 int compare(void *p1, void *p2) { return 0; } | |
| 254 | |
| 255 /// Returns size of the type. | |
| 256 size_t tsize() { return 0; } | |
| 257 | |
| 258 /// Swaps two instances of the type. | |
| 259 void swap(void *p1, void *p2) | |
| 260 { | |
| 261 size_t n = tsize(); | |
| 262 for (size_t i = 0; i < n; i++) | |
| 263 { byte t; | |
| 264 | |
| 265 t = (cast(byte *)p1)[i]; | |
| 266 (cast(byte *)p1)[i] = (cast(byte *)p2)[i]; | |
| 267 (cast(byte *)p2)[i] = t; | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 /// Get TypeInfo for 'next' type, as defined by what kind of type this is, | |
| 272 /// null if none. | |
| 273 TypeInfo next() { return null; } | |
| 274 | |
| 275 /// Return default initializer, null if default initialize to 0 | |
| 276 void[] init() { return null; } | |
| 277 | |
| 278 /// Get flags for type: 1 means GC should scan for pointers | |
| 279 uint flags() { return 0; } | |
| 280 | |
| 281 /// Get type information on the contents of the type; null if not available | |
| 282 OffsetTypeInfo[] offTi() { return null; } | |
| 283 } | |
| 284 | |
| 285 class TypeInfo_Typedef : TypeInfo | |
| 286 { | |
| 287 char[] toString() { return name; } | |
| 288 | |
| 289 int opEquals(Object o) | |
| 290 { TypeInfo_Typedef c; | |
| 291 | |
| 292 return cast(int) | |
| 293 (this is o || | |
| 294 ((c = cast(TypeInfo_Typedef)o) !is null && | |
| 295 this.name == c.name && | |
| 296 this.base == c.base)); | |
| 297 } | |
| 298 | |
| 299 hash_t getHash(void *p) { return base.getHash(p); } | |
| 300 int equals(void *p1, void *p2) { return base.equals(p1, p2); } | |
| 301 int compare(void *p1, void *p2) { return base.compare(p1, p2); } | |
| 302 size_t tsize() { return base.tsize(); } | |
| 303 void swap(void *p1, void *p2) { return base.swap(p1, p2); } | |
| 304 | |
|
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305 TypeInfo next() { return base; } |
| 132 | 306 uint flags() { return base.flags(); } |
| 307 void[] init() { return m_init.length ? m_init : base.init(); } | |
| 308 | |
| 309 TypeInfo base; | |
| 310 char[] name; | |
| 311 void[] m_init; | |
| 312 } | |
| 313 | |
| 314 class TypeInfo_Enum : TypeInfo_Typedef | |
| 315 { | |
| 316 } | |
| 317 | |
| 318 class TypeInfo_Pointer : TypeInfo | |
| 319 { | |
| 320 char[] toString() { return m_next.toString() ~ "*"; } | |
| 321 | |
| 322 int opEquals(Object o) | |
| 323 { TypeInfo_Pointer c; | |
| 324 | |
| 325 return this is o || | |
| 326 ((c = cast(TypeInfo_Pointer)o) !is null && | |
| 327 this.m_next == c.m_next); | |
| 328 } | |
| 329 | |
| 330 hash_t getHash(void *p) | |
| 331 { | |
| 332 return cast(hash_t)*cast(void**)p; | |
| 333 } | |
| 334 | |
| 335 int equals(void *p1, void *p2) | |
| 336 { | |
| 337 return cast(int)(*cast(void* *)p1 == *cast(void* *)p2); | |
| 338 } | |
| 339 | |
| 340 int compare(void *p1, void *p2) | |
| 341 { | |
| 342 if (*cast(void* *)p1 < *cast(void* *)p2) | |
| 343 return -1; | |
| 344 else if (*cast(void* *)p1 > *cast(void* *)p2) | |
| 345 return 1; | |
| 346 else | |
| 347 return 0; | |
| 348 } | |
| 349 | |
| 350 size_t tsize() | |
| 351 { | |
| 352 return (void*).sizeof; | |
| 353 } | |
| 354 | |
| 355 void swap(void *p1, void *p2) | |
| 356 { void* tmp; | |
| 357 tmp = *cast(void**)p1; | |
| 358 *cast(void**)p1 = *cast(void**)p2; | |
| 359 *cast(void**)p2 = tmp; | |
| 360 } | |
| 361 | |
| 362 TypeInfo next() { return m_next; } | |
| 363 uint flags() { return 1; } | |
| 364 | |
| 365 TypeInfo m_next; | |
| 366 } | |
| 367 | |
| 368 class TypeInfo_Array : TypeInfo | |
| 369 { | |
| 370 char[] toString() { return value.toString() ~ "[]"; } | |
| 371 | |
| 372 int opEquals(Object o) | |
| 373 { TypeInfo_Array c; | |
| 374 | |
| 375 return cast(int) | |
| 376 (this is o || | |
| 377 ((c = cast(TypeInfo_Array)o) !is null && | |
| 378 this.value == c.value)); | |
| 379 } | |
| 380 | |
| 381 hash_t getHash(void *p) | |
| 382 { size_t sz = value.tsize(); | |
| 383 hash_t hash = 0; | |
| 384 void[] a = *cast(void[]*)p; | |
| 385 for (size_t i = 0; i < a.length; i++) | |
| 386 hash += value.getHash(a.ptr + i * sz); | |
| 387 return hash; | |
| 388 } | |
| 389 | |
| 390 int equals(void *p1, void *p2) | |
| 391 { | |
| 392 void[] a1 = *cast(void[]*)p1; | |
| 393 void[] a2 = *cast(void[]*)p2; | |
| 394 if (a1.length != a2.length) | |
| 395 return 0; | |
| 396 size_t sz = value.tsize(); | |
| 397 for (size_t i = 0; i < a1.length; i++) | |
| 398 { | |
| 399 if (!value.equals(a1.ptr + i * sz, a2.ptr + i * sz)) | |
| 400 return 0; | |
| 401 } | |
| 402 return 1; | |
| 403 } | |
| 404 | |
| 405 int compare(void *p1, void *p2) | |
| 406 { | |
| 407 void[] a1 = *cast(void[]*)p1; | |
| 408 void[] a2 = *cast(void[]*)p2; | |
| 409 size_t sz = value.tsize(); | |
| 410 size_t len = a1.length; | |
| 411 | |
| 412 if (a2.length < len) | |
| 413 len = a2.length; | |
| 414 for (size_t u = 0; u < len; u++) | |
| 415 { | |
| 416 int result = value.compare(a1.ptr + u * sz, a2.ptr + u * sz); | |
| 417 if (result) | |
| 418 return result; | |
| 419 } | |
| 420 return cast(int)a1.length - cast(int)a2.length; | |
| 421 } | |
| 422 | |
| 423 size_t tsize() | |
| 424 { | |
| 425 return (void[]).sizeof; | |
| 426 } | |
| 427 | |
| 428 void swap(void *p1, void *p2) | |
| 429 { void[] tmp; | |
| 430 tmp = *cast(void[]*)p1; | |
| 431 *cast(void[]*)p1 = *cast(void[]*)p2; | |
| 432 *cast(void[]*)p2 = tmp; | |
| 433 } | |
| 434 | |
| 435 TypeInfo value; | |
| 436 | |
| 437 TypeInfo next() | |
| 438 { | |
| 439 return value; | |
|
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440 } |
| 132 | 441 |
| 442 uint flags() { return 1; } | |
| 443 } | |
| 444 | |
| 445 class TypeInfo_StaticArray : TypeInfo | |
| 446 { | |
| 447 char[] toString() | |
| 448 { | |
| 449 char [10] tmp = void; | |
| 450 return value.toString() ~ "[" ~ intToUtf8(tmp, len) ~ "]"; | |
| 451 } | |
| 452 | |
| 453 int opEquals(Object o) | |
| 454 { TypeInfo_StaticArray c; | |
| 455 | |
| 456 return cast(int) | |
| 457 (this is o || | |
| 458 ((c = cast(TypeInfo_StaticArray)o) !is null && | |
| 459 this.len == c.len && | |
| 460 this.value == c.value)); | |
| 461 } | |
| 462 | |
| 463 hash_t getHash(void *p) | |
| 464 { size_t sz = value.tsize(); | |
| 465 hash_t hash = 0; | |
| 466 for (size_t i = 0; i < len; i++) | |
| 467 hash += value.getHash(p + i * sz); | |
| 468 return hash; | |
| 469 } | |
| 470 | |
| 471 int equals(void *p1, void *p2) | |
| 472 { | |
| 473 size_t sz = value.tsize(); | |
| 474 | |
| 475 for (size_t u = 0; u < len; u++) | |
| 476 { | |
| 477 if (!value.equals(p1 + u * sz, p2 + u * sz)) | |
| 478 return 0; | |
| 479 } | |
| 480 return 1; | |
| 481 } | |
| 482 | |
| 483 int compare(void *p1, void *p2) | |
| 484 { | |
| 485 size_t sz = value.tsize(); | |
| 486 | |
| 487 for (size_t u = 0; u < len; u++) | |
| 488 { | |
| 489 int result = value.compare(p1 + u * sz, p2 + u * sz); | |
| 490 if (result) | |
| 491 return result; | |
| 492 } | |
| 493 return 0; | |
| 494 } | |
| 495 | |
| 496 size_t tsize() | |
| 497 { | |
| 498 return len * value.tsize(); | |
| 499 } | |
| 500 | |
| 501 void swap(void *p1, void *p2) | |
| 502 { void* tmp; | |
| 503 size_t sz = value.tsize(); | |
| 504 ubyte[16] buffer; | |
| 505 void* pbuffer; | |
| 506 | |
| 507 if (sz < buffer.sizeof) | |
| 508 tmp = buffer.ptr; | |
| 509 else | |
| 510 tmp = pbuffer = (new void[sz]).ptr; | |
| 511 | |
| 512 for (size_t u = 0; u < len; u += sz) | |
| 513 { size_t o = u * sz; | |
| 514 memcpy(tmp, p1 + o, sz); | |
| 515 memcpy(p1 + o, p2 + o, sz); | |
| 516 memcpy(p2 + o, tmp, sz); | |
| 517 } | |
| 518 if (pbuffer) | |
| 519 delete pbuffer; | |
| 520 } | |
| 521 | |
| 522 void[] init() { return value.init(); } | |
| 523 TypeInfo next() { return value; } | |
| 524 uint flags() { return value.flags(); } | |
| 525 | |
| 526 TypeInfo value; | |
| 527 size_t len; | |
| 528 } | |
| 529 | |
| 530 class TypeInfo_AssociativeArray : TypeInfo | |
| 531 { | |
| 532 char[] toString() | |
| 533 { | |
| 534 return next.toString() ~ "[" ~ key.toString() ~ "]"; | |
| 535 } | |
| 536 | |
| 537 int opEquals(Object o) | |
| 538 { TypeInfo_AssociativeArray c; | |
| 539 | |
| 540 return this is o || | |
| 541 ((c = cast(TypeInfo_AssociativeArray)o) !is null && | |
| 542 this.key == c.key && | |
| 543 this.value == c.value); | |
| 544 } | |
| 545 | |
| 546 // BUG: need to add the rest of the functions | |
| 547 | |
| 548 size_t tsize() | |
| 549 { | |
| 550 return (char[int]).sizeof; | |
| 551 } | |
| 552 | |
| 553 TypeInfo next() { return value; } | |
| 554 uint flags() { return 1; } | |
| 555 | |
| 556 TypeInfo value; | |
| 557 TypeInfo key; | |
| 558 } | |
| 559 | |
| 560 class TypeInfo_Function : TypeInfo | |
| 561 { | |
| 562 char[] toString() | |
| 563 { | |
| 564 return next.toString() ~ "()"; | |
| 565 } | |
| 566 | |
| 567 int opEquals(Object o) | |
| 568 { TypeInfo_Function c; | |
| 569 | |
| 570 return this is o || | |
| 571 ((c = cast(TypeInfo_Function)o) !is null && | |
| 572 this.next == c.next); | |
| 573 } | |
| 574 | |
| 575 // BUG: need to add the rest of the functions | |
| 576 | |
| 577 size_t tsize() | |
| 578 { | |
| 579 return 0; // no size for functions | |
| 580 } | |
| 581 | |
| 582 TypeInfo next; | |
| 583 } | |
| 584 | |
| 585 class TypeInfo_Delegate : TypeInfo | |
| 586 { | |
| 587 char[] toString() | |
| 588 { | |
| 589 return next.toString() ~ " delegate()"; | |
| 590 } | |
| 591 | |
| 592 int opEquals(Object o) | |
| 593 { TypeInfo_Delegate c; | |
| 594 | |
| 595 return this is o || | |
| 596 ((c = cast(TypeInfo_Delegate)o) !is null && | |
| 597 this.next == c.next); | |
| 598 } | |
| 599 | |
| 600 // BUG: need to add the rest of the functions | |
| 601 | |
| 602 size_t tsize() | |
| 603 { alias int delegate() dg; | |
| 604 return dg.sizeof; | |
| 605 } | |
| 606 | |
| 607 uint flags() { return 1; } | |
| 608 | |
| 609 TypeInfo next; | |
| 610 } | |
| 611 | |
| 612 class TypeInfo_Class : TypeInfo | |
| 613 { | |
| 614 char[] toString() { return info.name; } | |
| 615 | |
| 616 int opEquals(Object o) | |
| 617 { TypeInfo_Class c; | |
| 618 | |
| 619 return this is o || | |
| 620 ((c = cast(TypeInfo_Class)o) !is null && | |
| 621 this.info.name == c.classinfo.name); | |
| 622 } | |
| 623 | |
| 624 hash_t getHash(void *p) | |
| 625 { | |
| 626 Object o = *cast(Object*)p; | |
|
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627 return o ? o.toHash() : 0; |
| 132 | 628 } |
| 629 | |
| 630 int equals(void *p1, void *p2) | |
| 631 { | |
| 632 Object o1 = *cast(Object*)p1; | |
| 633 Object o2 = *cast(Object*)p2; | |
| 634 | |
| 635 return (o1 is o2) || (o1 && o1.opEquals(o2)); | |
| 636 } | |
| 637 | |
| 638 int compare(void *p1, void *p2) | |
| 639 { | |
| 640 Object o1 = *cast(Object*)p1; | |
| 641 Object o2 = *cast(Object*)p2; | |
| 642 int c = 0; | |
| 643 | |
| 644 // Regard null references as always being "less than" | |
| 645 if (o1 !is o2) | |
| 646 { | |
| 647 if (o1) | |
| 648 { if (!o2) | |
| 649 c = 1; | |
| 650 else | |
| 651 c = o1.opCmp(o2); | |
| 652 } | |
| 653 else | |
| 654 c = -1; | |
| 655 } | |
| 656 return c; | |
| 657 } | |
| 658 | |
| 659 size_t tsize() | |
| 660 { | |
| 661 return Object.sizeof; | |
| 662 } | |
| 663 | |
| 664 uint flags() { return 1; } | |
| 665 | |
| 666 OffsetTypeInfo[] offTi() | |
| 667 { | |
| 668 return (info.flags & 4) ? info.offTi : null; | |
| 669 } | |
| 670 | |
| 671 ClassInfo info; | |
| 672 } | |
| 673 | |
| 674 class TypeInfo_Interface : TypeInfo | |
| 675 { | |
| 676 char[] toString() { return info.name; } | |
| 677 | |
| 678 int opEquals(Object o) | |
| 679 { TypeInfo_Interface c; | |
| 680 | |
| 681 return this is o || | |
| 682 ((c = cast(TypeInfo_Interface)o) !is null && | |
| 683 this.info.name == c.classinfo.name); | |
| 684 } | |
| 685 | |
| 686 hash_t getHash(void *p) | |
| 687 { | |
| 688 Interface* pi = **cast(Interface ***)*cast(void**)p; | |
| 689 Object o = cast(Object)(*cast(void**)p - pi.offset); | |
| 690 assert(o); | |
| 691 return o.toHash(); | |
| 692 } | |
| 693 | |
| 694 int equals(void *p1, void *p2) | |
| 695 { | |
| 696 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 697 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 698 pi = **cast(Interface ***)*cast(void**)p2; | |
| 699 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 700 | |
| 701 return o1 == o2 || (o1 && o1.opCmp(o2) == 0); | |
| 702 } | |
| 703 | |
| 704 int compare(void *p1, void *p2) | |
| 705 { | |
| 706 Interface* pi = **cast(Interface ***)*cast(void**)p1; | |
| 707 Object o1 = cast(Object)(*cast(void**)p1 - pi.offset); | |
| 708 pi = **cast(Interface ***)*cast(void**)p2; | |
| 709 Object o2 = cast(Object)(*cast(void**)p2 - pi.offset); | |
| 710 int c = 0; | |
| 711 | |
| 712 // Regard null references as always being "less than" | |
| 713 if (o1 != o2) | |
| 714 { | |
| 715 if (o1) | |
| 716 { if (!o2) | |
| 717 c = 1; | |
| 718 else | |
| 719 c = o1.opCmp(o2); | |
| 720 } | |
| 721 else | |
| 722 c = -1; | |
| 723 } | |
| 724 return c; | |
| 725 } | |
| 726 | |
| 727 size_t tsize() | |
| 728 { | |
| 729 return Object.sizeof; | |
| 730 } | |
| 731 | |
| 732 uint flags() { return 1; } | |
| 733 | |
| 734 ClassInfo info; | |
| 735 } | |
| 736 | |
| 737 class TypeInfo_Struct : TypeInfo | |
| 738 { | |
| 739 char[] toString() { return name; } | |
| 740 | |
| 741 int opEquals(Object o) | |
| 742 { TypeInfo_Struct s; | |
| 743 | |
| 744 return this is o || | |
| 745 ((s = cast(TypeInfo_Struct)o) !is null && | |
| 746 this.name == s.name && | |
| 747 this.init.length == s.init.length); | |
| 748 } | |
| 749 | |
| 750 hash_t getHash(void *p) | |
| 751 { hash_t h; | |
| 752 | |
| 753 assert(p); | |
| 754 if (xtoHash) | |
| 755 { debug(PRINTF) printf("getHash() using xtoHash\n"); | |
| 756 h = (*xtoHash)(p); | |
| 757 } | |
| 758 else | |
| 759 { | |
| 760 debug(PRINTF) printf("getHash() using default hash\n"); | |
| 761 // A sorry hash algorithm. | |
| 762 // Should use the one for strings. | |
| 763 // BUG: relies on the GC not moving objects | |
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764 for (size_t i = 0; i < m_init.length; i++) |
| 132 | 765 { h = h * 9 + *cast(ubyte*)p; |
| 766 p++; | |
| 767 } | |
| 768 } | |
| 769 return h; | |
| 770 } | |
| 771 | |
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772 int equals(void *p1, void *p2) |
| 132 | 773 { int c; |
| 774 | |
| 775 if (p1 == p2) | |
| 776 c = 1; | |
| 777 else if (!p1 || !p2) | |
| 778 c = 0; | |
| 779 else if (xopEquals) | |
| 780 c = (*xopEquals)(p1, p2); | |
| 781 else | |
| 782 // BUG: relies on the GC not moving objects | |
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783 c = (memcmp(p1, p2, m_init.length) == 0); |
| 132 | 784 return c; |
| 785 } | |
| 786 | |
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787 int compare(void *p1, void *p2) |
| 132 | 788 { |
| 789 int c = 0; | |
| 790 | |
| 791 // Regard null references as always being "less than" | |
| 792 if (p1 != p2) | |
| 793 { | |
| 794 if (p1) | |
| 795 { if (!p2) | |
| 796 c = 1; | |
| 797 else if (xopCmp) | |
| 798 c = (*xopCmp)(p1, p2); | |
| 799 else | |
| 800 // BUG: relies on the GC not moving objects | |
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801 c = memcmp(p1, p2, m_init.length); |
| 132 | 802 } |
| 803 else | |
| 804 c = -1; | |
| 805 } | |
| 806 return c; | |
| 807 } | |
| 808 | |
| 809 size_t tsize() | |
| 810 { | |
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811 return m_init.length; |
| 132 | 812 } |
| 813 | |
| 814 void[] init() { return m_init; } | |
| 815 | |
| 816 uint flags() { return m_flags; } | |
| 817 | |
| 818 char[] name; | |
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819 void[] m_init; // initializer; never null |
| 132 | 820 |
| 821 hash_t function(void*) xtoHash; | |
| 822 int function(void*,void*) xopEquals; | |
| 823 int function(void*,void*) xopCmp; | |
| 824 char[] function(void*) xtoString; | |
| 825 | |
| 826 uint m_flags; | |
| 827 } | |
| 828 | |
| 829 class TypeInfo_Tuple : TypeInfo | |
| 830 { | |
| 831 TypeInfo[] elements; | |
| 832 | |
| 833 char[] toString() | |
| 834 { | |
| 835 char[] s; | |
| 836 s = "("; | |
| 837 foreach (i, element; elements) | |
| 838 { | |
| 839 if (i) | |
| 840 s ~= ','; | |
| 841 s ~= element.toString(); | |
| 842 } | |
| 843 s ~= ")"; | |
| 844 return s; | |
| 845 } | |
| 846 | |
| 847 int opEquals(Object o) | |
| 848 { | |
| 849 if (this is o) | |
| 850 return 1; | |
| 851 | |
| 852 auto t = cast(TypeInfo_Tuple)o; | |
| 853 if (t && elements.length == t.elements.length) | |
| 854 { | |
| 855 for (size_t i = 0; i < elements.length; i++) | |
| 856 { | |
| 857 if (elements[i] != t.elements[i]) | |
| 858 return 0; | |
| 859 } | |
| 860 return 1; | |
| 861 } | |
| 862 return 0; | |
| 863 } | |
| 864 | |
| 865 hash_t getHash(void *p) | |
| 866 { | |
| 867 assert(0); | |
| 868 } | |
| 869 | |
| 870 int equals(void *p1, void *p2) | |
| 871 { | |
| 872 assert(0); | |
| 873 } | |
| 874 | |
| 875 int compare(void *p1, void *p2) | |
| 876 { | |
| 877 assert(0); | |
| 878 } | |
| 879 | |
| 880 size_t tsize() | |
| 881 { | |
| 882 assert(0); | |
| 883 } | |
| 884 | |
| 885 void swap(void *p1, void *p2) | |
| 886 { | |
| 887 assert(0); | |
| 888 } | |
| 889 } | |
| 890 | |
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891 |
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892 //////////////////////////////////////////////////////////////////////////////// |
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893 // Exception |
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894 //////////////////////////////////////////////////////////////////////////////// |
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895 |
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896 |
| 132 | 897 class Exception : Object |
| 898 { | |
|
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899 interface TraceInfo |
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900 { |
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901 int opApply( int delegate( inout char[] ) ); |
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902 } |
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903 |
| 132 | 904 char[] msg; |
| 905 char[] file; | |
| 906 size_t line; | |
|
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907 TraceInfo info; |
| 132 | 908 Exception next; |
| 909 | |
|
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910 this( char[] msg, Exception next = null ) |
| 132 | 911 { |
| 912 this.msg = msg; | |
| 913 this.next = next; | |
|
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914 this.info = traceContext(); |
| 132 | 915 } |
| 916 | |
|
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917 this( char[] msg, char[] file, size_t line, Exception next = null ) |
| 132 | 918 { |
| 919 this(msg, next); | |
| 920 this.file = file; | |
| 921 this.line = line; | |
|
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922 this.info = traceContext(); |
| 132 | 923 } |
| 924 | |
| 925 char[] toString() | |
| 926 { | |
| 927 return msg; | |
| 928 } | |
| 929 } | |
| 930 | |
| 931 | |
|
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932 alias Exception.TraceInfo function( void* ptr = null ) TraceHandler; |
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933 private TraceHandler traceHandler = null; |
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934 |
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935 |
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936 /** |
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937 * Overrides the default trace hander with a user-supplied version. |
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938 * |
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939 * Params: |
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940 * h = The new trace handler. Set to null to use the default handler. |
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941 */ |
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942 extern (C) void rt_setTraceHandler( TraceHandler h ) |
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943 { |
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944 traceHandler = h; |
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945 } |
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946 |
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947 |
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948 /** |
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949 * This function will be called when an Exception is constructed. The |
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950 * user-supplied trace handler will be called if one has been supplied, |
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951 * otherwise no trace will be generated. |
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952 * |
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953 * Params: |
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954 * ptr = A pointer to the location from which to generate the trace, or null |
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955 * if the trace should be generated from within the trace handler |
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956 * itself. |
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957 * |
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958 * Returns: |
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959 * An object describing the current calling context or null if no handler is |
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960 * supplied. |
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961 */ |
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962 Exception.TraceInfo traceContext( void* ptr = null ) |
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963 { |
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964 if( traceHandler is null ) |
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965 return null; |
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966 return traceHandler( ptr ); |
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967 } |
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968 |
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969 |
| 132 | 970 //////////////////////////////////////////////////////////////////////////////// |
| 971 // ModuleInfo | |
| 972 //////////////////////////////////////////////////////////////////////////////// | |
| 973 | |
| 974 | |
| 975 enum | |
| 976 { | |
| 977 MIctorstart = 1, // we've started constructing it | |
| 978 MIctordone = 2, // finished construction | |
| 979 MIstandalone = 4, // module ctor does not depend on other module | |
| 980 // ctors being done first | |
| 981 MIhasictor = 8, // has ictor member | |
| 982 } | |
| 983 | |
| 984 | |
| 985 class ModuleInfo | |
| 986 { | |
| 987 char[] name; | |
| 988 ModuleInfo[] importedModules; | |
| 989 ClassInfo[] localClasses; | |
| 990 uint flags; | |
| 991 | |
| 992 void function() ctor; // module static constructor (order dependent) | |
| 993 void function() dtor; // module static destructor | |
| 994 void function() unitTest; // module unit tests | |
| 995 | |
| 996 void* xgetMembers; // module getMembers() function | |
| 997 | |
| 998 void function() ictor; // module static constructor (order independent) | |
| 999 | |
| 1000 static int opApply( int delegate( inout ModuleInfo ) dg ) | |
| 1001 { | |
| 1002 int ret = 0; | |
| 1003 | |
| 1004 foreach( m; _moduleinfo_array ) | |
| 1005 { | |
| 1006 ret = dg( m ); | |
| 1007 if( ret ) | |
| 1008 break; | |
| 1009 } | |
| 1010 return ret; | |
| 1011 } | |
| 1012 } | |
| 1013 | |
| 1014 | |
| 1015 // Win32: this gets initialized by minit.asm | |
| 1016 // linux: this gets initialized in _moduleCtor() | |
| 1017 extern (C) ModuleInfo[] _moduleinfo_array; | |
| 1018 | |
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1019 // llvmdc method |
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1020 extern (C) void** _d_get_moduleinfo_array(); |
| 132 | 1021 |
| 1022 ModuleInfo[] _moduleinfo_dtors; | |
| 1023 uint _moduleinfo_dtors_i; | |
| 1024 | |
| 1025 // Register termination function pointers | |
| 1026 extern (C) int _fatexit(void *); | |
| 1027 | |
| 1028 /** | |
| 1029 * Initialize the modules. | |
| 1030 */ | |
| 1031 | |
| 1032 extern (C) void _moduleCtor() | |
| 1033 { | |
| 1034 debug(PRINTF) printf("_moduleCtor()\n"); | |
|
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1035 |
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1036 ModuleInfo* mrbegin = cast(ModuleInfo*)_d_get_moduleinfo_array(); |
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1037 assert(mrbegin !is null); |
| 132 | 1038 |
|
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1039 int len = 0; |
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1040 ModuleInfo* mr; |
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1041 for (mr = mrbegin; *mr !is null; ++mr) |
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1042 len++; |
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1043 _moduleinfo_array = new ModuleInfo[len]; |
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1044 |
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1045 len = 0; |
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1046 for (mr = mrbegin; *mr !is null; ++mr) |
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1047 { _moduleinfo_array[len] = *mr; |
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1048 len++; |
| 132 | 1049 } |
| 1050 | |
| 1051 version (Win32) | |
| 1052 { | |
| 1053 // Ensure module destructors also get called on program termination | |
| 1054 //_fatexit(&_STD_moduleDtor); | |
| 1055 } | |
| 1056 | |
| 1057 _moduleinfo_dtors = new ModuleInfo[_moduleinfo_array.length]; | |
| 1058 debug(PRINTF) printf("_moduleinfo_dtors = x%x\n", cast(void *)_moduleinfo_dtors); | |
| 1059 _moduleIndependentCtors(); | |
| 1060 _moduleCtor2(_moduleinfo_array, 0); | |
|
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1061 debug(PRINTF) printf("_moduleCtor() DONE\n"); |
| 132 | 1062 } |
| 1063 | |
| 1064 extern (C) void _moduleIndependentCtors() | |
| 1065 { | |
| 1066 debug(PRINTF) printf("_moduleIndependentCtors()\n"); | |
| 1067 foreach (m; _moduleinfo_array) | |
| 1068 { | |
| 1069 if (m && m.flags & MIhasictor && m.ictor) | |
| 1070 { | |
| 1071 (*m.ictor)(); | |
| 1072 } | |
| 1073 } | |
|
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1074 debug(PRINTF) printf("_moduleIndependentCtors() DONE\n"); |
| 132 | 1075 } |
| 1076 | |
| 1077 void _moduleCtor2(ModuleInfo[] mi, int skip) | |
| 1078 { | |
| 1079 debug(PRINTF) printf("_moduleCtor2(): %d modules\n", mi.length); | |
| 1080 for (uint i = 0; i < mi.length; i++) | |
| 1081 { | |
| 1082 ModuleInfo m = mi[i]; | |
| 1083 | |
| 1084 debug(PRINTF) printf("\tmodule[%d] = '%p'\n", i, m); | |
| 1085 if (!m) | |
| 1086 continue; | |
|
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1087 debug(PRINTF) printf("\tmodule[%d] = '%.*s'\n", i, m.name.length, m.name.ptr); |
| 132 | 1088 if (m.flags & MIctordone) |
| 1089 continue; | |
|
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1090 debug(PRINTF) printf("\tmodule[%d] = '%.*s', m = x%x\n", i, m.name.length, m.name.ptr, m); |
| 132 | 1091 |
| 1092 if (m.ctor || m.dtor) | |
| 1093 { | |
| 1094 if (m.flags & MIctorstart) | |
| 1095 { if (skip || m.flags & MIstandalone) | |
| 1096 continue; | |
| 1097 throw new Exception( "Cyclic dependency in module " ~ m.name ); | |
| 1098 } | |
| 1099 | |
| 1100 m.flags |= MIctorstart; | |
| 1101 _moduleCtor2(m.importedModules, 0); | |
| 1102 if (m.ctor) | |
| 1103 (*m.ctor)(); | |
| 1104 m.flags &= ~MIctorstart; | |
| 1105 m.flags |= MIctordone; | |
| 1106 | |
| 1107 // Now that construction is done, register the destructor | |
| 1108 //printf("\tadding module dtor x%x\n", m); | |
| 1109 assert(_moduleinfo_dtors_i < _moduleinfo_dtors.length); | |
| 1110 _moduleinfo_dtors[_moduleinfo_dtors_i++] = m; | |
| 1111 } | |
| 1112 else | |
| 1113 { | |
| 1114 m.flags |= MIctordone; | |
| 1115 _moduleCtor2(m.importedModules, 1); | |
| 1116 } | |
| 1117 } | |
|
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1118 debug(PRINTF) printf("_moduleCtor2() DONE\n"); |
| 132 | 1119 } |
| 1120 | |
| 1121 /** | |
| 1122 * Destruct the modules. | |
| 1123 */ | |
| 1124 | |
| 1125 // Starting the name with "_STD" means under linux a pointer to the | |
| 1126 // function gets put in the .dtors segment. | |
| 1127 | |
| 1128 extern (C) void _moduleDtor() | |
| 1129 { | |
| 1130 debug(PRINTF) printf("_moduleDtor(): %d modules\n", _moduleinfo_dtors_i); | |
| 1131 | |
| 1132 for (uint i = _moduleinfo_dtors_i; i-- != 0;) | |
| 1133 { | |
| 1134 ModuleInfo m = _moduleinfo_dtors[i]; | |
| 1135 | |
| 1136 debug(PRINTF) printf("\tmodule[%d] = '%.*s', x%x\n", i, m.name, m); | |
| 1137 if (m.dtor) | |
| 1138 { | |
| 1139 (*m.dtor)(); | |
| 1140 } | |
| 1141 } | |
| 1142 debug(PRINTF) printf("_moduleDtor() done\n"); | |
| 1143 } | |
| 1144 | |
| 1145 //////////////////////////////////////////////////////////////////////////////// | |
| 1146 // Monitor | |
| 1147 //////////////////////////////////////////////////////////////////////////////// | |
| 1148 | |
|
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1149 alias Object.Monitor IMonitor; |
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1150 alias void delegate(Object) DEvent; |
| 132 | 1151 |
|
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1152 // NOTE: The dtor callback feature is only supported for monitors that are not |
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1153 // supplied by the user. The assumption is that any object with a user- |
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1154 // supplied monitor may have special storage or lifetime requirements and |
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1155 // that as a result, storing references to local objects within Monitor |
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1156 // may not be safe or desirable. Thus, devt is only valid if impl is |
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1157 // null. |
| 132 | 1158 struct Monitor |
| 1159 { | |
| 1160 IMonitor impl; | |
|
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1161 /* internal */ |
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1162 DEvent[] devt; |
| 132 | 1163 /* stuff */ |
| 1164 } | |
| 1165 | |
| 1166 Monitor* getMonitor(Object h) | |
| 1167 { | |
| 1168 return cast(Monitor*) (cast(void**) h)[1]; | |
| 1169 } | |
| 1170 | |
| 1171 void setMonitor(Object h, Monitor* m) | |
| 1172 { | |
| 1173 (cast(void**) h)[1] = m; | |
| 1174 } | |
| 1175 | |
| 1176 extern (C) void _d_monitor_create(Object); | |
| 1177 extern (C) void _d_monitor_destroy(Object); | |
| 1178 extern (C) void _d_monitor_lock(Object); | |
| 1179 extern (C) int _d_monitor_unlock(Object); | |
| 1180 | |
| 1181 extern (C) void _d_monitordelete(Object h, bool det) | |
| 1182 { | |
| 1183 Monitor* m = getMonitor(h); | |
| 1184 | |
| 1185 if (m !is null) | |
| 1186 { | |
| 1187 IMonitor i = m.impl; | |
| 1188 if (i is null) | |
| 1189 { | |
|
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1190 _d_monitor_devt(m, h); |
| 132 | 1191 _d_monitor_destroy(h); |
| 1192 setMonitor(h, null); | |
| 1193 return; | |
| 1194 } | |
| 1195 if (det && (cast(void*) i) !is (cast(void*) h)) | |
| 1196 delete i; | |
| 1197 setMonitor(h, null); | |
| 1198 } | |
| 1199 } | |
| 1200 | |
| 1201 extern (C) void _d_monitorenter(Object h) | |
| 1202 { | |
| 1203 Monitor* m = getMonitor(h); | |
| 1204 | |
| 1205 if (m is null) | |
| 1206 { | |
| 1207 _d_monitor_create(h); | |
| 1208 m = getMonitor(h); | |
| 1209 } | |
| 1210 | |
| 1211 IMonitor i = m.impl; | |
| 1212 | |
| 1213 if (i is null) | |
| 1214 { | |
| 1215 _d_monitor_lock(h); | |
| 1216 return; | |
| 1217 } | |
| 1218 i.lock(); | |
| 1219 } | |
| 1220 | |
| 1221 extern (C) void _d_monitorexit(Object h) | |
| 1222 { | |
| 1223 Monitor* m = getMonitor(h); | |
| 1224 IMonitor i = m.impl; | |
| 1225 | |
| 1226 if (i is null) | |
| 1227 { | |
| 1228 _d_monitor_unlock(h); | |
| 1229 return; | |
| 1230 } | |
| 1231 i.unlock(); | |
| 1232 } | |
|
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1233 |
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1234 extern (C) void _d_monitor_devt(Monitor* m, Object h) |
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1235 { |
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1236 if (m.devt.length) |
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1237 { |
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1238 DEvent[] devt; |
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1239 |
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1240 synchronized (h) |
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1241 { |
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1242 devt = m.devt; |
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1243 m.devt = null; |
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1244 } |
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1245 foreach (v; devt) |
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1246 { |
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1247 if (v) |
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1248 v(h); |
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|
1249 } |
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1250 free(devt.ptr); |
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1251 } |
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1252 } |
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|
1253 |
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1254 extern (C) void rt_attachDisposeEvent(Object h, DEvent e) |
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1255 { |
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1256 synchronized (h) |
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1257 { |
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1258 Monitor* m = getMonitor(h); |
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1259 assert(m.impl is null); |
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1260 |
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1261 foreach (inout v; m.devt) |
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1262 { |
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1263 if (v is null || v == e) |
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1264 { |
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1265 v = e; |
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1266 return; |
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1267 } |
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1268 } |
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1269 |
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1270 auto len = m.devt.length + 4; // grow by 4 elements |
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1271 auto pos = m.devt.length; // insert position |
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1272 auto p = realloc(m.devt.ptr, DEvent.sizeof * len); |
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1273 if (!p) |
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1274 onOutOfMemoryError(); |
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1275 m.devt = (cast(DEvent*)p)[0 .. len]; |
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1276 m.devt[pos+1 .. len] = null; |
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1277 m.devt[pos] = e; |
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1278 } |
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1279 } |
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1280 |
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1281 extern (C) void rt_detachDisposeEvent(Object h, DEvent e) |
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1282 { |
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1283 synchronized (h) |
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1284 { |
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1285 Monitor* m = getMonitor(h); |
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1286 assert(m.impl is null); |
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1287 |
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1288 foreach (p, v; m.devt) |
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1289 { |
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1290 if (v == e) |
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1291 { |
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1292 memmove(&m.devt[p], |
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1293 &m.devt[p+1], |
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1294 (m.devt.length - p - 1) * DEvent.sizeof); |
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1295 m.devt[$ - 1] = null; |
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1296 return; |
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1297 } |
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1298 } |
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1299 } |
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1300 } |