1 /* 2 * Copyright (C) 2011 The Android Open Source Project 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 #ifndef ART_RUNTIME_GC_SPACE_SPACE_TEST_H_ 18 #define ART_RUNTIME_GC_SPACE_SPACE_TEST_H_ 19 20 #include <stdint.h> 21 #include <memory> 22 23 #include "common_runtime_test.h" 24 #include "globals.h" 25 #include "mirror/array-inl.h" 26 #include "mirror/class-inl.h" 27 #include "mirror/class_loader.h" 28 #include "mirror/object-inl.h" 29 #include "scoped_thread_state_change.h" 30 #include "zygote_space.h" 31 32 namespace art { 33 namespace gc { 34 namespace space { 35 36 class SpaceTest : public CommonRuntimeTest { 37 public: 38 jobject byte_array_class_; 39 40 SpaceTest() : byte_array_class_(nullptr) { 41 } 42 43 void AddSpace(ContinuousSpace* space, bool revoke = true) { 44 Heap* heap = Runtime::Current()->GetHeap(); 45 if (revoke) { 46 heap->RevokeAllThreadLocalBuffers(); 47 } 48 heap->AddSpace(space); 49 heap->SetSpaceAsDefault(space); 50 } 51 52 mirror::Class* GetByteArrayClass(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 53 StackHandleScope<1> hs(self); 54 auto null_loader(hs.NewHandle<mirror::ClassLoader>(nullptr)); 55 if (byte_array_class_ == nullptr) { 56 mirror::Class* byte_array_class = 57 Runtime::Current()->GetClassLinker()->FindClass(self, "[B", null_loader); 58 EXPECT_TRUE(byte_array_class != nullptr); 59 byte_array_class_ = self->GetJniEnv()->NewLocalRef(byte_array_class); 60 EXPECT_TRUE(byte_array_class_ != nullptr); 61 } 62 return reinterpret_cast<mirror::Class*>(self->DecodeJObject(byte_array_class_)); 63 } 64 65 mirror::Object* Alloc(space::MallocSpace* alloc_space, Thread* self, size_t bytes, 66 size_t* bytes_allocated, size_t* usable_size, 67 size_t* bytes_tl_bulk_allocated) 68 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 69 StackHandleScope<1> hs(self); 70 Handle<mirror::Class> byte_array_class(hs.NewHandle(GetByteArrayClass(self))); 71 mirror::Object* obj = alloc_space->Alloc(self, bytes, bytes_allocated, usable_size, 72 bytes_tl_bulk_allocated); 73 if (obj != nullptr) { 74 InstallClass(obj, byte_array_class.Get(), bytes); 75 } 76 return obj; 77 } 78 79 mirror::Object* AllocWithGrowth(space::MallocSpace* alloc_space, Thread* self, size_t bytes, 80 size_t* bytes_allocated, size_t* usable_size, 81 size_t* bytes_tl_bulk_allocated) 82 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 83 StackHandleScope<1> hs(self); 84 Handle<mirror::Class> byte_array_class(hs.NewHandle(GetByteArrayClass(self))); 85 mirror::Object* obj = alloc_space->AllocWithGrowth(self, bytes, bytes_allocated, usable_size, 86 bytes_tl_bulk_allocated); 87 if (obj != nullptr) { 88 InstallClass(obj, byte_array_class.Get(), bytes); 89 } 90 return obj; 91 } 92 93 void InstallClass(mirror::Object* o, mirror::Class* byte_array_class, size_t size) 94 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 95 // Note the minimum size, which is the size of a zero-length byte array. 96 EXPECT_GE(size, SizeOfZeroLengthByteArray()); 97 EXPECT_TRUE(byte_array_class != nullptr); 98 o->SetClass(byte_array_class); 99 if (kUseBakerOrBrooksReadBarrier) { 100 // Like the proper heap object allocation, install and verify 101 // the correct read barrier pointer. 102 if (kUseBrooksReadBarrier) { 103 o->SetReadBarrierPointer(o); 104 } 105 o->AssertReadBarrierPointer(); 106 } 107 mirror::Array* arr = o->AsArray<kVerifyNone>(); 108 size_t header_size = SizeOfZeroLengthByteArray(); 109 int32_t length = size - header_size; 110 arr->SetLength(length); 111 EXPECT_EQ(arr->SizeOf<kVerifyNone>(), size); 112 } 113 114 static size_t SizeOfZeroLengthByteArray() { 115 return mirror::Array::DataOffset(Primitive::ComponentSize(Primitive::kPrimByte)).Uint32Value(); 116 } 117 118 typedef MallocSpace* (*CreateSpaceFn)(const std::string& name, size_t initial_size, size_t growth_limit, 119 size_t capacity, uint8_t* requested_begin); 120 void InitTestBody(CreateSpaceFn create_space); 121 void ZygoteSpaceTestBody(CreateSpaceFn create_space); 122 void AllocAndFreeTestBody(CreateSpaceFn create_space); 123 void AllocAndFreeListTestBody(CreateSpaceFn create_space); 124 125 void SizeFootPrintGrowthLimitAndTrimBody(MallocSpace* space, intptr_t object_size, 126 int round, size_t growth_limit); 127 void SizeFootPrintGrowthLimitAndTrimDriver(size_t object_size, CreateSpaceFn create_space); 128 }; 129 130 static inline size_t test_rand(size_t* seed) { 131 *seed = *seed * 1103515245 + 12345; 132 return *seed; 133 } 134 135 void SpaceTest::InitTestBody(CreateSpaceFn create_space) { 136 // This will lead to error messages in the log. 137 ScopedLogSeverity sls(LogSeverity::FATAL); 138 139 { 140 // Init < max == growth 141 std::unique_ptr<Space> space(create_space("test", 16 * MB, 32 * MB, 32 * MB, nullptr)); 142 EXPECT_TRUE(space.get() != nullptr); 143 } 144 { 145 // Init == max == growth 146 std::unique_ptr<Space> space(create_space("test", 16 * MB, 16 * MB, 16 * MB, nullptr)); 147 EXPECT_TRUE(space.get() != nullptr); 148 } 149 { 150 // Init > max == growth 151 std::unique_ptr<Space> space(create_space("test", 32 * MB, 16 * MB, 16 * MB, nullptr)); 152 EXPECT_TRUE(space.get() == nullptr); 153 } 154 { 155 // Growth == init < max 156 std::unique_ptr<Space> space(create_space("test", 16 * MB, 16 * MB, 32 * MB, nullptr)); 157 EXPECT_TRUE(space.get() != nullptr); 158 } 159 { 160 // Growth < init < max 161 std::unique_ptr<Space> space(create_space("test", 16 * MB, 8 * MB, 32 * MB, nullptr)); 162 EXPECT_TRUE(space.get() == nullptr); 163 } 164 { 165 // Init < growth < max 166 std::unique_ptr<Space> space(create_space("test", 8 * MB, 16 * MB, 32 * MB, nullptr)); 167 EXPECT_TRUE(space.get() != nullptr); 168 } 169 { 170 // Init < max < growth 171 std::unique_ptr<Space> space(create_space("test", 8 * MB, 32 * MB, 16 * MB, nullptr)); 172 EXPECT_TRUE(space.get() == nullptr); 173 } 174 } 175 176 // TODO: This test is not very good, we should improve it. 177 // The test should do more allocations before the creation of the ZygoteSpace, and then do 178 // allocations after the ZygoteSpace is created. The test should also do some GCs to ensure that 179 // the GC works with the ZygoteSpace. 180 void SpaceTest::ZygoteSpaceTestBody(CreateSpaceFn create_space) { 181 size_t dummy; 182 MallocSpace* space(create_space("test", 4 * MB, 16 * MB, 16 * MB, nullptr)); 183 ASSERT_TRUE(space != nullptr); 184 185 // Make space findable to the heap, will also delete space when runtime is cleaned up 186 AddSpace(space); 187 Thread* self = Thread::Current(); 188 ScopedObjectAccess soa(self); 189 190 // Succeeds, fits without adjusting the footprint limit. 191 size_t ptr1_bytes_allocated, ptr1_usable_size, ptr1_bytes_tl_bulk_allocated; 192 StackHandleScope<3> hs(soa.Self()); 193 MutableHandle<mirror::Object> ptr1( 194 hs.NewHandle(Alloc(space, self, 1 * MB, &ptr1_bytes_allocated, &ptr1_usable_size, 195 &ptr1_bytes_tl_bulk_allocated))); 196 EXPECT_TRUE(ptr1.Get() != nullptr); 197 EXPECT_LE(1U * MB, ptr1_bytes_allocated); 198 EXPECT_LE(1U * MB, ptr1_usable_size); 199 EXPECT_LE(ptr1_usable_size, ptr1_bytes_allocated); 200 EXPECT_EQ(ptr1_bytes_tl_bulk_allocated, ptr1_bytes_allocated); 201 202 // Fails, requires a higher footprint limit. 203 mirror::Object* ptr2 = Alloc(space, self, 8 * MB, &dummy, nullptr, &dummy); 204 EXPECT_TRUE(ptr2 == nullptr); 205 206 // Succeeds, adjusts the footprint. 207 size_t ptr3_bytes_allocated, ptr3_usable_size, ptr3_bytes_tl_bulk_allocated; 208 MutableHandle<mirror::Object> ptr3( 209 hs.NewHandle(AllocWithGrowth(space, self, 8 * MB, &ptr3_bytes_allocated, &ptr3_usable_size, 210 &ptr3_bytes_tl_bulk_allocated))); 211 EXPECT_TRUE(ptr3.Get() != nullptr); 212 EXPECT_LE(8U * MB, ptr3_bytes_allocated); 213 EXPECT_LE(8U * MB, ptr3_usable_size); 214 EXPECT_LE(ptr3_usable_size, ptr3_bytes_allocated); 215 EXPECT_EQ(ptr3_bytes_tl_bulk_allocated, ptr3_bytes_allocated); 216 217 // Fails, requires a higher footprint limit. 218 mirror::Object* ptr4 = space->Alloc(self, 8 * MB, &dummy, nullptr, &dummy); 219 EXPECT_TRUE(ptr4 == nullptr); 220 221 // Also fails, requires a higher allowed footprint. 222 mirror::Object* ptr5 = space->AllocWithGrowth(self, 8 * MB, &dummy, nullptr, &dummy); 223 EXPECT_TRUE(ptr5 == nullptr); 224 225 // Release some memory. 226 size_t free3 = space->AllocationSize(ptr3.Get(), nullptr); 227 EXPECT_EQ(free3, ptr3_bytes_allocated); 228 EXPECT_EQ(free3, space->Free(self, ptr3.Assign(nullptr))); 229 EXPECT_LE(8U * MB, free3); 230 231 // Succeeds, now that memory has been freed. 232 size_t ptr6_bytes_allocated, ptr6_usable_size, ptr6_bytes_tl_bulk_allocated; 233 Handle<mirror::Object> ptr6( 234 hs.NewHandle(AllocWithGrowth(space, self, 9 * MB, &ptr6_bytes_allocated, &ptr6_usable_size, 235 &ptr6_bytes_tl_bulk_allocated))); 236 EXPECT_TRUE(ptr6.Get() != nullptr); 237 EXPECT_LE(9U * MB, ptr6_bytes_allocated); 238 EXPECT_LE(9U * MB, ptr6_usable_size); 239 EXPECT_LE(ptr6_usable_size, ptr6_bytes_allocated); 240 EXPECT_EQ(ptr6_bytes_tl_bulk_allocated, ptr6_bytes_allocated); 241 242 // Final clean up. 243 size_t free1 = space->AllocationSize(ptr1.Get(), nullptr); 244 space->Free(self, ptr1.Assign(nullptr)); 245 EXPECT_LE(1U * MB, free1); 246 247 // Make sure that the zygote space isn't directly at the start of the space. 248 EXPECT_TRUE(space->Alloc(self, 1U * MB, &dummy, nullptr, &dummy) != nullptr); 249 250 gc::Heap* heap = Runtime::Current()->GetHeap(); 251 space::Space* old_space = space; 252 heap->RemoveSpace(old_space); 253 heap->RevokeAllThreadLocalBuffers(); 254 space::ZygoteSpace* zygote_space = space->CreateZygoteSpace("alloc space", 255 heap->IsLowMemoryMode(), 256 &space); 257 delete old_space; 258 // Add the zygote space. 259 AddSpace(zygote_space, false); 260 261 // Make space findable to the heap, will also delete space when runtime is cleaned up 262 AddSpace(space, false); 263 264 // Succeeds, fits without adjusting the footprint limit. 265 ptr1.Assign(Alloc(space, self, 1 * MB, &ptr1_bytes_allocated, &ptr1_usable_size, 266 &ptr1_bytes_tl_bulk_allocated)); 267 EXPECT_TRUE(ptr1.Get() != nullptr); 268 EXPECT_LE(1U * MB, ptr1_bytes_allocated); 269 EXPECT_LE(1U * MB, ptr1_usable_size); 270 EXPECT_LE(ptr1_usable_size, ptr1_bytes_allocated); 271 EXPECT_EQ(ptr1_bytes_tl_bulk_allocated, ptr1_bytes_allocated); 272 273 // Fails, requires a higher footprint limit. 274 ptr2 = Alloc(space, self, 8 * MB, &dummy, nullptr, &dummy); 275 EXPECT_TRUE(ptr2 == nullptr); 276 277 // Succeeds, adjusts the footprint. 278 ptr3.Assign(AllocWithGrowth(space, self, 2 * MB, &ptr3_bytes_allocated, &ptr3_usable_size, 279 &ptr3_bytes_tl_bulk_allocated)); 280 EXPECT_TRUE(ptr3.Get() != nullptr); 281 EXPECT_LE(2U * MB, ptr3_bytes_allocated); 282 EXPECT_LE(2U * MB, ptr3_usable_size); 283 EXPECT_LE(ptr3_usable_size, ptr3_bytes_allocated); 284 EXPECT_EQ(ptr3_bytes_tl_bulk_allocated, ptr3_bytes_allocated); 285 space->Free(self, ptr3.Assign(nullptr)); 286 287 // Final clean up. 288 free1 = space->AllocationSize(ptr1.Get(), nullptr); 289 space->Free(self, ptr1.Assign(nullptr)); 290 EXPECT_LE(1U * MB, free1); 291 } 292 293 void SpaceTest::AllocAndFreeTestBody(CreateSpaceFn create_space) { 294 size_t dummy = 0; 295 MallocSpace* space(create_space("test", 4 * MB, 16 * MB, 16 * MB, nullptr)); 296 ASSERT_TRUE(space != nullptr); 297 Thread* self = Thread::Current(); 298 ScopedObjectAccess soa(self); 299 300 // Make space findable to the heap, will also delete space when runtime is cleaned up 301 AddSpace(space); 302 303 // Succeeds, fits without adjusting the footprint limit. 304 size_t ptr1_bytes_allocated, ptr1_usable_size, ptr1_bytes_tl_bulk_allocated; 305 StackHandleScope<3> hs(soa.Self()); 306 MutableHandle<mirror::Object> ptr1( 307 hs.NewHandle(Alloc(space, self, 1 * MB, &ptr1_bytes_allocated, &ptr1_usable_size, 308 &ptr1_bytes_tl_bulk_allocated))); 309 EXPECT_TRUE(ptr1.Get() != nullptr); 310 EXPECT_LE(1U * MB, ptr1_bytes_allocated); 311 EXPECT_LE(1U * MB, ptr1_usable_size); 312 EXPECT_LE(ptr1_usable_size, ptr1_bytes_allocated); 313 EXPECT_EQ(ptr1_bytes_tl_bulk_allocated, ptr1_bytes_allocated); 314 315 // Fails, requires a higher footprint limit. 316 mirror::Object* ptr2 = Alloc(space, self, 8 * MB, &dummy, nullptr, &dummy); 317 EXPECT_TRUE(ptr2 == nullptr); 318 319 // Succeeds, adjusts the footprint. 320 size_t ptr3_bytes_allocated, ptr3_usable_size, ptr3_bytes_tl_bulk_allocated; 321 MutableHandle<mirror::Object> ptr3( 322 hs.NewHandle(AllocWithGrowth(space, self, 8 * MB, &ptr3_bytes_allocated, &ptr3_usable_size, 323 &ptr3_bytes_tl_bulk_allocated))); 324 EXPECT_TRUE(ptr3.Get() != nullptr); 325 EXPECT_LE(8U * MB, ptr3_bytes_allocated); 326 EXPECT_LE(8U * MB, ptr3_usable_size); 327 EXPECT_LE(ptr3_usable_size, ptr3_bytes_allocated); 328 EXPECT_EQ(ptr3_bytes_tl_bulk_allocated, ptr3_bytes_allocated); 329 330 // Fails, requires a higher footprint limit. 331 mirror::Object* ptr4 = Alloc(space, self, 8 * MB, &dummy, nullptr, &dummy); 332 EXPECT_TRUE(ptr4 == nullptr); 333 334 // Also fails, requires a higher allowed footprint. 335 mirror::Object* ptr5 = AllocWithGrowth(space, self, 8 * MB, &dummy, nullptr, &dummy); 336 EXPECT_TRUE(ptr5 == nullptr); 337 338 // Release some memory. 339 size_t free3 = space->AllocationSize(ptr3.Get(), nullptr); 340 EXPECT_EQ(free3, ptr3_bytes_allocated); 341 space->Free(self, ptr3.Assign(nullptr)); 342 EXPECT_LE(8U * MB, free3); 343 344 // Succeeds, now that memory has been freed. 345 size_t ptr6_bytes_allocated, ptr6_usable_size, ptr6_bytes_tl_bulk_allocated; 346 Handle<mirror::Object> ptr6( 347 hs.NewHandle(AllocWithGrowth(space, self, 9 * MB, &ptr6_bytes_allocated, &ptr6_usable_size, 348 &ptr6_bytes_tl_bulk_allocated))); 349 EXPECT_TRUE(ptr6.Get() != nullptr); 350 EXPECT_LE(9U * MB, ptr6_bytes_allocated); 351 EXPECT_LE(9U * MB, ptr6_usable_size); 352 EXPECT_LE(ptr6_usable_size, ptr6_bytes_allocated); 353 EXPECT_EQ(ptr6_bytes_tl_bulk_allocated, ptr6_bytes_allocated); 354 355 // Final clean up. 356 size_t free1 = space->AllocationSize(ptr1.Get(), nullptr); 357 space->Free(self, ptr1.Assign(nullptr)); 358 EXPECT_LE(1U * MB, free1); 359 } 360 361 void SpaceTest::AllocAndFreeListTestBody(CreateSpaceFn create_space) { 362 MallocSpace* space(create_space("test", 4 * MB, 16 * MB, 16 * MB, nullptr)); 363 ASSERT_TRUE(space != nullptr); 364 365 // Make space findable to the heap, will also delete space when runtime is cleaned up 366 AddSpace(space); 367 Thread* self = Thread::Current(); 368 ScopedObjectAccess soa(self); 369 370 // Succeeds, fits without adjusting the max allowed footprint. 371 mirror::Object* lots_of_objects[1024]; 372 for (size_t i = 0; i < arraysize(lots_of_objects); i++) { 373 size_t allocation_size, usable_size, bytes_tl_bulk_allocated; 374 size_t size_of_zero_length_byte_array = SizeOfZeroLengthByteArray(); 375 lots_of_objects[i] = Alloc(space, self, size_of_zero_length_byte_array, &allocation_size, 376 &usable_size, &bytes_tl_bulk_allocated); 377 EXPECT_TRUE(lots_of_objects[i] != nullptr); 378 size_t computed_usable_size; 379 EXPECT_EQ(allocation_size, space->AllocationSize(lots_of_objects[i], &computed_usable_size)); 380 EXPECT_EQ(usable_size, computed_usable_size); 381 EXPECT_TRUE(bytes_tl_bulk_allocated == 0 || 382 bytes_tl_bulk_allocated >= allocation_size); 383 } 384 385 // Release memory. 386 space->FreeList(self, arraysize(lots_of_objects), lots_of_objects); 387 388 // Succeeds, fits by adjusting the max allowed footprint. 389 for (size_t i = 0; i < arraysize(lots_of_objects); i++) { 390 size_t allocation_size, usable_size, bytes_tl_bulk_allocated; 391 lots_of_objects[i] = AllocWithGrowth(space, self, 1024, &allocation_size, &usable_size, 392 &bytes_tl_bulk_allocated); 393 EXPECT_TRUE(lots_of_objects[i] != nullptr); 394 size_t computed_usable_size; 395 EXPECT_EQ(allocation_size, space->AllocationSize(lots_of_objects[i], &computed_usable_size)); 396 EXPECT_EQ(usable_size, computed_usable_size); 397 EXPECT_TRUE(bytes_tl_bulk_allocated == 0 || 398 bytes_tl_bulk_allocated >= allocation_size); 399 } 400 401 // Release memory. 402 space->FreeList(self, arraysize(lots_of_objects), lots_of_objects); 403 } 404 405 void SpaceTest::SizeFootPrintGrowthLimitAndTrimBody(MallocSpace* space, intptr_t object_size, 406 int round, size_t growth_limit) { 407 if (((object_size > 0 && object_size >= static_cast<intptr_t>(growth_limit))) || 408 ((object_size < 0 && -object_size >= static_cast<intptr_t>(growth_limit)))) { 409 // No allocation can succeed 410 return; 411 } 412 413 // The space's footprint equals amount of resources requested from system 414 size_t footprint = space->GetFootprint(); 415 416 // The space must at least have its book keeping allocated 417 EXPECT_GT(footprint, 0u); 418 419 // But it shouldn't exceed the initial size 420 EXPECT_LE(footprint, growth_limit); 421 422 // space's size shouldn't exceed the initial size 423 EXPECT_LE(space->Size(), growth_limit); 424 425 // this invariant should always hold or else the space has grown to be larger than what the 426 // space believes its size is (which will break invariants) 427 EXPECT_GE(space->Size(), footprint); 428 429 // Fill the space with lots of small objects up to the growth limit 430 size_t max_objects = (growth_limit / (object_size > 0 ? object_size : 8)) + 1; 431 std::unique_ptr<mirror::Object*[]> lots_of_objects(new mirror::Object*[max_objects]); 432 size_t last_object = 0; // last object for which allocation succeeded 433 size_t amount_allocated = 0; // amount of space allocated 434 Thread* self = Thread::Current(); 435 ScopedObjectAccess soa(self); 436 size_t rand_seed = 123456789; 437 for (size_t i = 0; i < max_objects; i++) { 438 size_t alloc_fails = 0; // number of failed allocations 439 size_t max_fails = 30; // number of times we fail allocation before giving up 440 for (; alloc_fails < max_fails; alloc_fails++) { 441 size_t alloc_size; 442 if (object_size > 0) { 443 alloc_size = object_size; 444 } else { 445 alloc_size = test_rand(&rand_seed) % static_cast<size_t>(-object_size); 446 // Note the minimum size, which is the size of a zero-length byte array. 447 size_t size_of_zero_length_byte_array = SizeOfZeroLengthByteArray(); 448 if (alloc_size < size_of_zero_length_byte_array) { 449 alloc_size = size_of_zero_length_byte_array; 450 } 451 } 452 StackHandleScope<1> hs(soa.Self()); 453 auto object(hs.NewHandle<mirror::Object>(nullptr)); 454 size_t bytes_allocated = 0; 455 size_t bytes_tl_bulk_allocated; 456 if (round <= 1) { 457 object.Assign(Alloc(space, self, alloc_size, &bytes_allocated, nullptr, 458 &bytes_tl_bulk_allocated)); 459 } else { 460 object.Assign(AllocWithGrowth(space, self, alloc_size, &bytes_allocated, nullptr, 461 &bytes_tl_bulk_allocated)); 462 } 463 footprint = space->GetFootprint(); 464 EXPECT_GE(space->Size(), footprint); // invariant 465 if (object.Get() != nullptr) { // allocation succeeded 466 lots_of_objects[i] = object.Get(); 467 size_t allocation_size = space->AllocationSize(object.Get(), nullptr); 468 EXPECT_EQ(bytes_allocated, allocation_size); 469 if (object_size > 0) { 470 EXPECT_GE(allocation_size, static_cast<size_t>(object_size)); 471 } else { 472 EXPECT_GE(allocation_size, 8u); 473 } 474 EXPECT_TRUE(bytes_tl_bulk_allocated == 0 || 475 bytes_tl_bulk_allocated >= allocation_size); 476 amount_allocated += allocation_size; 477 break; 478 } 479 } 480 if (alloc_fails == max_fails) { 481 last_object = i; 482 break; 483 } 484 } 485 CHECK_NE(last_object, 0u); // we should have filled the space 486 EXPECT_GT(amount_allocated, 0u); 487 488 // We shouldn't have gone past the growth_limit 489 EXPECT_LE(amount_allocated, growth_limit); 490 EXPECT_LE(footprint, growth_limit); 491 EXPECT_LE(space->Size(), growth_limit); 492 493 // footprint and size should agree with amount allocated 494 EXPECT_GE(footprint, amount_allocated); 495 EXPECT_GE(space->Size(), amount_allocated); 496 497 // Release storage in a semi-adhoc manner 498 size_t free_increment = 96; 499 while (true) { 500 { 501 ScopedThreadStateChange tsc(self, kNative); 502 // Give the space a haircut. 503 space->Trim(); 504 } 505 506 // Bounds sanity 507 footprint = space->GetFootprint(); 508 EXPECT_LE(amount_allocated, growth_limit); 509 EXPECT_GE(footprint, amount_allocated); 510 EXPECT_LE(footprint, growth_limit); 511 EXPECT_GE(space->Size(), amount_allocated); 512 EXPECT_LE(space->Size(), growth_limit); 513 514 if (free_increment == 0) { 515 break; 516 } 517 518 // Free some objects 519 for (size_t i = 0; i < last_object; i += free_increment) { 520 mirror::Object* object = lots_of_objects.get()[i]; 521 if (object == nullptr) { 522 continue; 523 } 524 size_t allocation_size = space->AllocationSize(object, nullptr); 525 if (object_size > 0) { 526 EXPECT_GE(allocation_size, static_cast<size_t>(object_size)); 527 } else { 528 EXPECT_GE(allocation_size, 8u); 529 } 530 space->Free(self, object); 531 lots_of_objects.get()[i] = nullptr; 532 amount_allocated -= allocation_size; 533 footprint = space->GetFootprint(); 534 EXPECT_GE(space->Size(), footprint); // invariant 535 } 536 537 free_increment >>= 1; 538 } 539 540 // The space has become empty here before allocating a large object 541 // below. For RosAlloc, revoke thread-local runs, which are kept 542 // even when empty for a performance reason, so that they won't 543 // cause the following large object allocation to fail due to 544 // potential fragmentation. Note they are normally revoked at each 545 // GC (but no GC here.) 546 space->RevokeAllThreadLocalBuffers(); 547 548 // All memory was released, try a large allocation to check freed memory is being coalesced 549 StackHandleScope<1> hs(soa.Self()); 550 auto large_object(hs.NewHandle<mirror::Object>(nullptr)); 551 size_t three_quarters_space = (growth_limit / 2) + (growth_limit / 4); 552 size_t bytes_allocated = 0; 553 size_t bytes_tl_bulk_allocated; 554 if (round <= 1) { 555 large_object.Assign(Alloc(space, self, three_quarters_space, &bytes_allocated, nullptr, 556 &bytes_tl_bulk_allocated)); 557 } else { 558 large_object.Assign(AllocWithGrowth(space, self, three_quarters_space, &bytes_allocated, 559 nullptr, &bytes_tl_bulk_allocated)); 560 } 561 EXPECT_TRUE(large_object.Get() != nullptr); 562 563 // Sanity check footprint 564 footprint = space->GetFootprint(); 565 EXPECT_LE(footprint, growth_limit); 566 EXPECT_GE(space->Size(), footprint); 567 EXPECT_LE(space->Size(), growth_limit); 568 569 // Clean up 570 space->Free(self, large_object.Assign(nullptr)); 571 572 // Sanity check footprint 573 footprint = space->GetFootprint(); 574 EXPECT_LE(footprint, growth_limit); 575 EXPECT_GE(space->Size(), footprint); 576 EXPECT_LE(space->Size(), growth_limit); 577 } 578 579 void SpaceTest::SizeFootPrintGrowthLimitAndTrimDriver(size_t object_size, CreateSpaceFn create_space) { 580 if (object_size < SizeOfZeroLengthByteArray()) { 581 // Too small for the object layout/model. 582 return; 583 } 584 size_t initial_size = 4 * MB; 585 size_t growth_limit = 8 * MB; 586 size_t capacity = 16 * MB; 587 MallocSpace* space(create_space("test", initial_size, growth_limit, capacity, nullptr)); 588 ASSERT_TRUE(space != nullptr); 589 590 // Basic sanity 591 EXPECT_EQ(space->Capacity(), growth_limit); 592 EXPECT_EQ(space->NonGrowthLimitCapacity(), capacity); 593 594 // Make space findable to the heap, will also delete space when runtime is cleaned up 595 AddSpace(space); 596 597 // In this round we don't allocate with growth and therefore can't grow past the initial size. 598 // This effectively makes the growth_limit the initial_size, so assert this. 599 SizeFootPrintGrowthLimitAndTrimBody(space, object_size, 1, initial_size); 600 SizeFootPrintGrowthLimitAndTrimBody(space, object_size, 2, growth_limit); 601 // Remove growth limit 602 space->ClearGrowthLimit(); 603 EXPECT_EQ(space->Capacity(), capacity); 604 SizeFootPrintGrowthLimitAndTrimBody(space, object_size, 3, capacity); 605 } 606 607 #define TEST_SizeFootPrintGrowthLimitAndTrimStatic(name, spaceName, spaceFn, size) \ 608 TEST_F(spaceName##StaticTest, SizeFootPrintGrowthLimitAndTrim_AllocationsOf_##name) { \ 609 SizeFootPrintGrowthLimitAndTrimDriver(size, spaceFn); \ 610 } 611 612 #define TEST_SizeFootPrintGrowthLimitAndTrimRandom(name, spaceName, spaceFn, size) \ 613 TEST_F(spaceName##RandomTest, SizeFootPrintGrowthLimitAndTrim_RandomAllocationsWithMax_##name) { \ 614 SizeFootPrintGrowthLimitAndTrimDriver(-size, spaceFn); \ 615 } 616 617 #define TEST_SPACE_CREATE_FN_BASE(spaceName, spaceFn) \ 618 class spaceName##BaseTest : public SpaceTest { \ 619 }; \ 620 \ 621 TEST_F(spaceName##BaseTest, Init) { \ 622 InitTestBody(spaceFn); \ 623 } \ 624 TEST_F(spaceName##BaseTest, ZygoteSpace) { \ 625 ZygoteSpaceTestBody(spaceFn); \ 626 } \ 627 TEST_F(spaceName##BaseTest, AllocAndFree) { \ 628 AllocAndFreeTestBody(spaceFn); \ 629 } \ 630 TEST_F(spaceName##BaseTest, AllocAndFreeList) { \ 631 AllocAndFreeListTestBody(spaceFn); \ 632 } 633 634 #define TEST_SPACE_CREATE_FN_STATIC(spaceName, spaceFn) \ 635 class spaceName##StaticTest : public SpaceTest { \ 636 }; \ 637 \ 638 TEST_SizeFootPrintGrowthLimitAndTrimStatic(12B, spaceName, spaceFn, 12) \ 639 TEST_SizeFootPrintGrowthLimitAndTrimStatic(16B, spaceName, spaceFn, 16) \ 640 TEST_SizeFootPrintGrowthLimitAndTrimStatic(24B, spaceName, spaceFn, 24) \ 641 TEST_SizeFootPrintGrowthLimitAndTrimStatic(32B, spaceName, spaceFn, 32) \ 642 TEST_SizeFootPrintGrowthLimitAndTrimStatic(64B, spaceName, spaceFn, 64) \ 643 TEST_SizeFootPrintGrowthLimitAndTrimStatic(128B, spaceName, spaceFn, 128) \ 644 TEST_SizeFootPrintGrowthLimitAndTrimStatic(1KB, spaceName, spaceFn, 1 * KB) \ 645 TEST_SizeFootPrintGrowthLimitAndTrimStatic(4KB, spaceName, spaceFn, 4 * KB) \ 646 TEST_SizeFootPrintGrowthLimitAndTrimStatic(1MB, spaceName, spaceFn, 1 * MB) \ 647 TEST_SizeFootPrintGrowthLimitAndTrimStatic(4MB, spaceName, spaceFn, 4 * MB) \ 648 TEST_SizeFootPrintGrowthLimitAndTrimStatic(8MB, spaceName, spaceFn, 8 * MB) 649 650 #define TEST_SPACE_CREATE_FN_RANDOM(spaceName, spaceFn) \ 651 class spaceName##RandomTest : public SpaceTest { \ 652 }; \ 653 \ 654 TEST_SizeFootPrintGrowthLimitAndTrimRandom(16B, spaceName, spaceFn, 16) \ 655 TEST_SizeFootPrintGrowthLimitAndTrimRandom(24B, spaceName, spaceFn, 24) \ 656 TEST_SizeFootPrintGrowthLimitAndTrimRandom(32B, spaceName, spaceFn, 32) \ 657 TEST_SizeFootPrintGrowthLimitAndTrimRandom(64B, spaceName, spaceFn, 64) \ 658 TEST_SizeFootPrintGrowthLimitAndTrimRandom(128B, spaceName, spaceFn, 128) \ 659 TEST_SizeFootPrintGrowthLimitAndTrimRandom(1KB, spaceName, spaceFn, 1 * KB) \ 660 TEST_SizeFootPrintGrowthLimitAndTrimRandom(4KB, spaceName, spaceFn, 4 * KB) \ 661 TEST_SizeFootPrintGrowthLimitAndTrimRandom(1MB, spaceName, spaceFn, 1 * MB) \ 662 TEST_SizeFootPrintGrowthLimitAndTrimRandom(4MB, spaceName, spaceFn, 4 * MB) \ 663 TEST_SizeFootPrintGrowthLimitAndTrimRandom(8MB, spaceName, spaceFn, 8 * MB) 664 665 } // namespace space 666 } // namespace gc 667 } // namespace art 668 669 #endif // ART_RUNTIME_GC_SPACE_SPACE_TEST_H_ 670
