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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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567 | 567 |
568 // Can we free null? | 568 // Can we free null? |
569 partitionFreeGeneric(genericAllocator.root(), 0); | 569 partitionFreeGeneric(genericAllocator.root(), 0); |
570 | 570 |
571 // Do we correctly get a null for a failed allocation? | 571 // Do we correctly get a null for a failed allocation? |
572 EXPECT_EQ(0, partitionAllocGenericFlags(genericAllocator.root(), WTF::Partit ionAllocReturnNull, 3u * 1024 * 1024 * 1024)); | 572 EXPECT_EQ(0, partitionAllocGenericFlags(genericAllocator.root(), WTF::Partit ionAllocReturnNull, 3u * 1024 * 1024 * 1024)); |
573 | 573 |
574 TestShutdown(); | 574 TestShutdown(); |
575 } | 575 } |
576 | 576 |
577 // Test that we can fetch the real allocated size after an allocation. | |
578 TEST(WTF_PartitionAlloc, GenericAllocGetSize) | |
579 { | |
580 TestSetup(); | |
581 | |
582 void* ptr; | |
583 size_t requestedSize, actualSize; | |
584 | |
585 // Allocate something small. | |
586 requestedSize = 512; | |
Chris Evans
2014/02/18 22:19:59
I think you might need to adjust the size dependin
Chris Evans
2014/02/18 22:19:59
I have another idea. Can we make all the sizes odd
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587 ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize); | |
588 EXPECT_TRUE(ptr); | |
589 actualSize = partitionAllocGetSize(genericAllocator.root(), ptr); | |
590 EXPECT_LE(requestedSize, actualSize); | |
591 partitionFreeGeneric(genericAllocator.root(), ptr); | |
592 | |
593 // Allocate something slightly larger. | |
594 requestedSize = 200 * 1024; | |
595 ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize); | |
596 EXPECT_TRUE(ptr); | |
597 actualSize = partitionAllocGetSize(genericAllocator.root(), ptr); | |
598 EXPECT_LE(requestedSize, actualSize); | |
599 partitionFreeGeneric(genericAllocator.root(), ptr); | |
600 | |
601 // Allocate something slightly larger and uneven. GetSize() should return a | |
602 // larger size than we asked for now. | |
603 requestedSize = 200 * 1024 + 250; | |
Chris Evans
2014/02/18 22:19:59
A nicer size to test might be (256 * 1024) - kSyst
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604 ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize); | |
605 EXPECT_TRUE(ptr); | |
606 actualSize = partitionAllocGetSize(genericAllocator.root(), ptr); | |
607 EXPECT_LT(requestedSize, actualSize); | |
608 // Check that we can write at the end of the reported size too. | |
609 char* charPtr = reinterpret_cast<char*>(ptr); | |
610 *(charPtr + (actualSize - 1)) = 'A'; | |
611 partitionFreeGeneric(genericAllocator.root(), ptr); | |
612 | |
613 // Allocate something very large. GetSize() should return zero. | |
Chris Evans
2014/02/18 22:19:59
Does this actually happen? I see that you're testi
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614 requestedSize = 512 * 1024 * 1024; | |
615 ptr = partitionAllocGeneric(genericAllocator.root(), requestedSize); | |
616 EXPECT_TRUE(ptr); | |
617 actualSize = partitionAllocGetSize(genericAllocator.root(), ptr); | |
618 EXPECT_LE(requestedSize, actualSize); | |
619 partitionFreeGeneric(genericAllocator.root(), ptr); | |
620 | |
621 TestShutdown(); | |
622 } | |
623 | |
577 // Test the realloc() contract. | 624 // Test the realloc() contract. |
578 TEST(WTF_PartitionAlloc, Realloc) | 625 TEST(WTF_PartitionAlloc, Realloc) |
579 { | 626 { |
580 TestSetup(); | 627 TestSetup(); |
581 | 628 |
582 // realloc(0, size) should be equivalent to malloc(). | 629 // realloc(0, size) should be equivalent to malloc(). |
583 void* ptr = partitionReallocGeneric(genericAllocator.root(), 0, kTestAllocSi ze); | 630 void* ptr = partitionReallocGeneric(genericAllocator.root(), 0, kTestAllocSi ze); |
584 memset(ptr, 'A', kTestAllocSize); | 631 memset(ptr, 'A', kTestAllocSize); |
585 WTF::PartitionPage* page = WTF::partitionPointerToPage(WTF::partitionCookieF reePointerAdjust(ptr)); | 632 WTF::PartitionPage* page = WTF::partitionPointerToPage(WTF::partitionCookieF reePointerAdjust(ptr)); |
586 // realloc(ptr, 0) should be equivalent to free(). | 633 // realloc(ptr, 0) should be equivalent to free(). |
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986 EXPECT_EQ(32u, WTF::countLeadingZerosSizet(0)); | 1033 EXPECT_EQ(32u, WTF::countLeadingZerosSizet(0)); |
987 EXPECT_EQ(31u, WTF::countLeadingZerosSizet(1)); | 1034 EXPECT_EQ(31u, WTF::countLeadingZerosSizet(1)); |
988 EXPECT_EQ(1u, WTF::countLeadingZerosSizet(1 << 30)); | 1035 EXPECT_EQ(1u, WTF::countLeadingZerosSizet(1 << 30)); |
989 EXPECT_EQ(0u, WTF::countLeadingZerosSizet(1 << 31)); | 1036 EXPECT_EQ(0u, WTF::countLeadingZerosSizet(1 << 31)); |
990 #endif | 1037 #endif |
991 } | 1038 } |
992 | 1039 |
993 } // namespace | 1040 } // namespace |
994 | 1041 |
995 #endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) | 1042 #endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) |
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