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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/memory/ref_counted.h" | 5 #include "base/memory/ref_counted.h" |
6 | 6 |
7 #include "base/test/opaque_ref_counted.h" | 7 #include "base/test/opaque_ref_counted.h" |
8 #include "testing/gtest/include/gtest/gtest.h" | 8 #include "testing/gtest/include/gtest/gtest.h" |
9 | 9 |
10 namespace { | 10 namespace { |
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46 friend class base::RefCounted<ScopedRefPtrToSelf>; | 46 friend class base::RefCounted<ScopedRefPtrToSelf>; |
47 ~ScopedRefPtrToSelf() { was_destroyed_ = true; } | 47 ~ScopedRefPtrToSelf() { was_destroyed_ = true; } |
48 | 48 |
49 static bool was_destroyed_; | 49 static bool was_destroyed_; |
50 | 50 |
51 scoped_refptr<ScopedRefPtrToSelf> self_ptr_; | 51 scoped_refptr<ScopedRefPtrToSelf> self_ptr_; |
52 }; | 52 }; |
53 | 53 |
54 bool ScopedRefPtrToSelf::was_destroyed_ = false; | 54 bool ScopedRefPtrToSelf::was_destroyed_ = false; |
55 | 55 |
| 56 class ScopedRefPtrCountBase : public base::RefCounted<ScopedRefPtrCountBase> { |
| 57 public: |
| 58 ScopedRefPtrCountBase() { ++constructor_count_; } |
| 59 |
| 60 static int constructor_count() { return constructor_count_; } |
| 61 |
| 62 static int destructor_count() { return destructor_count_; } |
| 63 |
| 64 static void reset_count() { |
| 65 constructor_count_ = 0; |
| 66 destructor_count_ = 0; |
| 67 } |
| 68 |
| 69 protected: |
| 70 virtual ~ScopedRefPtrCountBase() { ++destructor_count_; } |
| 71 |
| 72 private: |
| 73 friend class base::RefCounted<ScopedRefPtrCountBase>; |
| 74 |
| 75 static int constructor_count_; |
| 76 static int destructor_count_; |
| 77 }; |
| 78 |
| 79 int ScopedRefPtrCountBase::constructor_count_ = 0; |
| 80 int ScopedRefPtrCountBase::destructor_count_ = 0; |
| 81 |
| 82 class ScopedRefPtrCountDerived : public ScopedRefPtrCountBase { |
| 83 public: |
| 84 ScopedRefPtrCountDerived() { ++constructor_count_; } |
| 85 |
| 86 static int constructor_count() { return constructor_count_; } |
| 87 |
| 88 static int destructor_count() { return destructor_count_; } |
| 89 |
| 90 static void reset_count() { |
| 91 constructor_count_ = 0; |
| 92 destructor_count_ = 0; |
| 93 } |
| 94 |
| 95 protected: |
| 96 virtual ~ScopedRefPtrCountDerived() override { ++destructor_count_; } |
| 97 |
| 98 private: |
| 99 friend class base::RefCounted<ScopedRefPtrCountDerived>; |
| 100 |
| 101 static int constructor_count_; |
| 102 static int destructor_count_; |
| 103 }; |
| 104 |
| 105 int ScopedRefPtrCountDerived::constructor_count_ = 0; |
| 106 int ScopedRefPtrCountDerived::destructor_count_ = 0; |
| 107 |
56 } // end namespace | 108 } // end namespace |
57 | 109 |
58 TEST(RefCountedUnitTest, TestSelfAssignment) { | 110 TEST(RefCountedUnitTest, TestSelfAssignment) { |
59 SelfAssign* p = new SelfAssign; | 111 SelfAssign* p = new SelfAssign; |
60 scoped_refptr<SelfAssign> var(p); | 112 scoped_refptr<SelfAssign> var(p); |
61 var = var; | 113 var = var; |
62 EXPECT_EQ(var.get(), p); | 114 EXPECT_EQ(var.get(), p); |
63 } | 115 } |
64 | 116 |
65 TEST(RefCountedUnitTest, ScopedRefPtrMemberAccess) { | 117 TEST(RefCountedUnitTest, ScopedRefPtrMemberAccess) { |
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106 scoped_refptr<SelfAssign> p2; | 158 scoped_refptr<SelfAssign> p2; |
107 | 159 |
108 EXPECT_NE(p1, p2); | 160 EXPECT_NE(p1, p2); |
109 EXPECT_NE(p2, p1); | 161 EXPECT_NE(p2, p1); |
110 | 162 |
111 p2 = p1; | 163 p2 = p1; |
112 | 164 |
113 EXPECT_EQ(p1, p2); | 165 EXPECT_EQ(p1, p2); |
114 EXPECT_EQ(p2, p1); | 166 EXPECT_EQ(p2, p1); |
115 } | 167 } |
| 168 |
| 169 TEST(RefCountedUnitTest, SelfMoveAssignment) { |
| 170 ScopedRefPtrCountBase::reset_count(); |
| 171 |
| 172 { |
| 173 ScopedRefPtrCountBase *raw = new ScopedRefPtrCountBase(); |
| 174 scoped_refptr<ScopedRefPtrCountBase> p(raw); |
| 175 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 176 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 177 |
| 178 p = p.Pass(); |
| 179 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 180 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 181 EXPECT_EQ(raw, p.get()); |
| 182 |
| 183 // p goes out of scope. |
| 184 } |
| 185 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 186 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 187 } |
| 188 |
| 189 TEST(RefCountedUnitTest, MoveAssignment1) { |
| 190 ScopedRefPtrCountBase::reset_count(); |
| 191 |
| 192 { |
| 193 ScopedRefPtrCountBase *raw = new ScopedRefPtrCountBase(); |
| 194 scoped_refptr<ScopedRefPtrCountBase> p1(raw); |
| 195 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 196 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 197 |
| 198 { |
| 199 scoped_refptr<ScopedRefPtrCountBase> p2; |
| 200 |
| 201 p2 = p1.Pass(); |
| 202 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 203 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 204 EXPECT_EQ(nullptr, p1.get()); |
| 205 EXPECT_EQ(raw, p2.get()); |
| 206 |
| 207 // p2 goes out of scope. |
| 208 } |
| 209 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 210 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 211 |
| 212 // p1 goes out of scope. |
| 213 } |
| 214 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 215 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 216 } |
| 217 |
| 218 TEST(RefCountedUnitTest, MoveAssignment2) { |
| 219 ScopedRefPtrCountBase::reset_count(); |
| 220 |
| 221 { |
| 222 ScopedRefPtrCountBase *raw = new ScopedRefPtrCountBase(); |
| 223 scoped_refptr<ScopedRefPtrCountBase> p1; |
| 224 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 225 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 226 |
| 227 { |
| 228 scoped_refptr<ScopedRefPtrCountBase> p2(raw); |
| 229 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 230 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 231 |
| 232 p1 = p2.Pass(); |
| 233 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 234 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 235 EXPECT_EQ(raw, p1.get()); |
| 236 EXPECT_EQ(nullptr, p2.get()); |
| 237 |
| 238 // p2 goes out of scope. |
| 239 } |
| 240 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 241 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 242 |
| 243 // p1 goes out of scope. |
| 244 } |
| 245 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 246 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 247 } |
| 248 |
| 249 TEST(RefCountedUnitTest, MoveAssignmentSameInstance1) { |
| 250 ScopedRefPtrCountBase::reset_count(); |
| 251 |
| 252 { |
| 253 ScopedRefPtrCountBase *raw = new ScopedRefPtrCountBase(); |
| 254 scoped_refptr<ScopedRefPtrCountBase> p1(raw); |
| 255 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 256 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 257 |
| 258 { |
| 259 scoped_refptr<ScopedRefPtrCountBase> p2(p1); |
| 260 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 261 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 262 |
| 263 p1 = p2.Pass(); |
| 264 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 265 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 266 EXPECT_EQ(raw, p1.get()); |
| 267 EXPECT_EQ(nullptr, p2.get()); |
| 268 |
| 269 // p2 goes out of scope. |
| 270 } |
| 271 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 272 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 273 |
| 274 // p1 goes out of scope. |
| 275 } |
| 276 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 277 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 278 } |
| 279 |
| 280 TEST(RefCountedUnitTest, MoveAssignmentSameInstance2) { |
| 281 ScopedRefPtrCountBase::reset_count(); |
| 282 |
| 283 { |
| 284 ScopedRefPtrCountBase *raw = new ScopedRefPtrCountBase(); |
| 285 scoped_refptr<ScopedRefPtrCountBase> p1(raw); |
| 286 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 287 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 288 |
| 289 { |
| 290 scoped_refptr<ScopedRefPtrCountBase> p2(p1); |
| 291 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 292 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 293 |
| 294 p2 = p1.Pass(); |
| 295 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 296 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 297 EXPECT_EQ(nullptr, p1.get()); |
| 298 EXPECT_EQ(raw, p2.get()); |
| 299 |
| 300 // p2 goes out of scope. |
| 301 } |
| 302 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 303 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 304 |
| 305 // p1 goes out of scope. |
| 306 } |
| 307 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 308 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 309 } |
| 310 |
| 311 TEST(RefCountedUnitTest, MoveAssignmentDifferentInstances) { |
| 312 ScopedRefPtrCountBase::reset_count(); |
| 313 |
| 314 { |
| 315 ScopedRefPtrCountBase *raw1 = new ScopedRefPtrCountBase(); |
| 316 scoped_refptr<ScopedRefPtrCountBase> p1(raw1); |
| 317 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 318 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 319 |
| 320 { |
| 321 ScopedRefPtrCountBase *raw2 = new ScopedRefPtrCountBase(); |
| 322 scoped_refptr<ScopedRefPtrCountBase> p2(raw2); |
| 323 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 324 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 325 |
| 326 p1 = p2.Pass(); |
| 327 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 328 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 329 EXPECT_EQ(raw2, p1.get()); |
| 330 EXPECT_EQ(nullptr, p2.get()); |
| 331 |
| 332 // p2 goes out of scope. |
| 333 } |
| 334 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 335 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 336 |
| 337 // p1 goes out of scope. |
| 338 } |
| 339 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 340 EXPECT_EQ(2, ScopedRefPtrCountBase::destructor_count()); |
| 341 } |
| 342 |
| 343 TEST(RefCountedUnitTest, MoveAssignmentDerived) { |
| 344 ScopedRefPtrCountBase::reset_count(); |
| 345 ScopedRefPtrCountDerived::reset_count(); |
| 346 |
| 347 { |
| 348 ScopedRefPtrCountBase *raw1 = new ScopedRefPtrCountBase(); |
| 349 scoped_refptr<ScopedRefPtrCountBase> p1(raw1); |
| 350 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 351 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 352 EXPECT_EQ(0, ScopedRefPtrCountDerived::constructor_count()); |
| 353 EXPECT_EQ(0, ScopedRefPtrCountDerived::destructor_count()); |
| 354 |
| 355 { |
| 356 ScopedRefPtrCountDerived *raw2 = new ScopedRefPtrCountDerived(); |
| 357 scoped_refptr<ScopedRefPtrCountDerived> p2(raw2); |
| 358 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 359 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 360 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 361 EXPECT_EQ(0, ScopedRefPtrCountDerived::destructor_count()); |
| 362 |
| 363 p1 = p2.Pass(); |
| 364 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 365 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 366 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 367 EXPECT_EQ(0, ScopedRefPtrCountDerived::destructor_count()); |
| 368 EXPECT_EQ(raw2, p1.get()); |
| 369 EXPECT_EQ(nullptr, p2.get()); |
| 370 |
| 371 // p2 goes out of scope. |
| 372 } |
| 373 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 374 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 375 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 376 EXPECT_EQ(0, ScopedRefPtrCountDerived::destructor_count()); |
| 377 |
| 378 // p1 goes out of scope. |
| 379 } |
| 380 EXPECT_EQ(2, ScopedRefPtrCountBase::constructor_count()); |
| 381 EXPECT_EQ(2, ScopedRefPtrCountBase::destructor_count()); |
| 382 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 383 EXPECT_EQ(1, ScopedRefPtrCountDerived::destructor_count()); |
| 384 } |
| 385 |
| 386 TEST(RefCountedUnitTest, MoveConstructor) { |
| 387 ScopedRefPtrCountBase::reset_count(); |
| 388 |
| 389 { |
| 390 ScopedRefPtrCountBase *raw = new ScopedRefPtrCountBase(); |
| 391 scoped_refptr<ScopedRefPtrCountBase> p1(raw); |
| 392 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 393 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 394 |
| 395 { |
| 396 scoped_refptr<ScopedRefPtrCountBase> p2(p1.Pass()); |
| 397 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 398 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 399 EXPECT_EQ(nullptr, p1.get()); |
| 400 EXPECT_EQ(raw, p2.get()); |
| 401 |
| 402 // p2 goes out of scope. |
| 403 } |
| 404 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 405 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 406 |
| 407 // p1 goes out of scope. |
| 408 } |
| 409 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 410 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 411 } |
| 412 |
| 413 TEST(RefCountedUnitTest, MoveConstructorDerived) { |
| 414 ScopedRefPtrCountBase::reset_count(); |
| 415 ScopedRefPtrCountDerived::reset_count(); |
| 416 |
| 417 { |
| 418 ScopedRefPtrCountDerived *raw1 = new ScopedRefPtrCountDerived(); |
| 419 scoped_refptr<ScopedRefPtrCountDerived> p1(raw1); |
| 420 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 421 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 422 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 423 EXPECT_EQ(0, ScopedRefPtrCountDerived::destructor_count()); |
| 424 |
| 425 { |
| 426 scoped_refptr<ScopedRefPtrCountBase> p2(p1.Pass()); |
| 427 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 428 EXPECT_EQ(0, ScopedRefPtrCountBase::destructor_count()); |
| 429 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 430 EXPECT_EQ(0, ScopedRefPtrCountDerived::destructor_count()); |
| 431 EXPECT_EQ(nullptr, p1.get()); |
| 432 EXPECT_EQ(raw1, p2.get()); |
| 433 |
| 434 // p2 goes out of scope. |
| 435 } |
| 436 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 437 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 438 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 439 EXPECT_EQ(1, ScopedRefPtrCountDerived::destructor_count()); |
| 440 |
| 441 // p1 goes out of scope. |
| 442 } |
| 443 EXPECT_EQ(1, ScopedRefPtrCountBase::constructor_count()); |
| 444 EXPECT_EQ(1, ScopedRefPtrCountBase::destructor_count()); |
| 445 EXPECT_EQ(1, ScopedRefPtrCountDerived::constructor_count()); |
| 446 EXPECT_EQ(1, ScopedRefPtrCountDerived::destructor_count()); |
| 447 } |
| 448 |
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