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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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| 31 #include "config.h" | 31 #include "config.h" |
| 32 #include "wtf/PartitionAlloc.h" | 32 #include "wtf/PartitionAlloc.h" |
| 33 | 33 |
| 34 #include "wtf/CryptographicallyRandomNumber.h" | 34 #include "wtf/CryptographicallyRandomNumber.h" |
| 35 #include "wtf/OwnArrayPtr.h" | 35 #include "wtf/OwnArrayPtr.h" |
| 36 #include "wtf/PageAllocator.h" | 36 #include "wtf/PageAllocator.h" |
| 37 #include <gtest/gtest.h> | 37 #include <gtest/gtest.h> |
| 38 #include <stdlib.h> | 38 #include <stdlib.h> |
| 39 #include <string.h> | 39 #include <string.h> |
| 40 | 40 |
| 41 #if OS(UNIX) | 41 #if OS(POSIX) |
| 42 #include <sys/mman.h> | 42 #include <sys/mman.h> |
| 43 | 43 |
| 44 #ifndef MAP_ANONYMOUS | 44 #ifndef MAP_ANONYMOUS |
| 45 #define MAP_ANONYMOUS MAP_ANON | 45 #define MAP_ANONYMOUS MAP_ANON |
| 46 #endif | 46 #endif |
| 47 #endif // OS(UNIX) | 47 #endif // OS(POSIX) |
| 48 | 48 |
| 49 #if !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) | 49 #if !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) |
| 50 | 50 |
| 51 namespace { | 51 namespace { |
| 52 | 52 |
| 53 static PartitionAllocator<4096> allocator; | 53 static PartitionAllocator<4096> allocator; |
| 54 | 54 |
| 55 static const int kTestAllocSize = sizeof(void*); | 55 static const int kTestAllocSize = sizeof(void*); |
| 56 | 56 |
| 57 static void RandomNumberSource(unsigned char* buf, size_t len) | 57 static void RandomNumberSource(unsigned char* buf, size_t len) |
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| 435 newPtr = partitionReallocGeneric(allocator.root(), ptr, PartitionAllocator<4
096>::kMaxAllocation * 2, 1); | 435 newPtr = partitionReallocGeneric(allocator.root(), ptr, PartitionAllocator<4
096>::kMaxAllocation * 2, 1); |
| 436 EXPECT_NE(newPtr, ptr); | 436 EXPECT_NE(newPtr, ptr); |
| 437 EXPECT_EQ(newPtr, origPtr); | 437 EXPECT_EQ(newPtr, origPtr); |
| 438 newCharPtr = static_cast<char*>(newPtr); | 438 newCharPtr = static_cast<char*>(newPtr); |
| 439 EXPECT_EQ(*newCharPtr, 'F'); | 439 EXPECT_EQ(*newCharPtr, 'F'); |
| 440 | 440 |
| 441 partitionFreeGeneric(allocator.root(), newPtr, 1); | 441 partitionFreeGeneric(allocator.root(), newPtr, 1); |
| 442 TestShutdown(); | 442 TestShutdown(); |
| 443 } | 443 } |
| 444 | 444 |
| 445 #if OS(UNIX) | 445 #if OS(POSIX) |
| 446 | 446 |
| 447 // Test correct handling if our mapping collides with another. | 447 // Test correct handling if our mapping collides with another. |
| 448 TEST(WTF_PartitionAlloc, MappingCollision) | 448 TEST(WTF_PartitionAlloc, MappingCollision) |
| 449 { | 449 { |
| 450 TestSetup(); | 450 TestSetup(); |
| 451 | 451 |
| 452 WTF::PartitionPageHeader* page1 = GetFullPage(kTestAllocSize); | 452 WTF::PartitionPageHeader* page1 = GetFullPage(kTestAllocSize); |
| 453 char* pageBase = reinterpret_cast<char*>(page1); | 453 char* pageBase = reinterpret_cast<char*>(page1); |
| 454 // Map a single system page either side of the mapping for our allocations, | 454 // Map a single system page either side of the mapping for our allocations, |
| 455 // with the goal of tripping up alignment of the next mapping. | 455 // with the goal of tripping up alignment of the next mapping. |
| 456 void* map1 = mmap(pageBase - WTF::kSystemPageSize, WTF::kSystemPageSize, PRO
T_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); | 456 void* map1 = mmap(pageBase - WTF::kSystemPageSize, WTF::kSystemPageSize, PRO
T_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); |
| 457 EXPECT_TRUE(map1 && map1 != MAP_FAILED); | 457 EXPECT_TRUE(map1 && map1 != MAP_FAILED); |
| 458 void* map2 = mmap(pageBase + WTF::kSuperPageSize, WTF::kSystemPageSize, PROT
_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); | 458 void* map2 = mmap(pageBase + WTF::kSuperPageSize, WTF::kSystemPageSize, PROT
_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); |
| 459 EXPECT_TRUE(map2 && map2 != MAP_FAILED); | 459 EXPECT_TRUE(map2 && map2 != MAP_FAILED); |
| 460 | 460 |
| 461 WTF::PartitionPageHeader* page2 = GetFullPage(kTestAllocSize); | 461 WTF::PartitionPageHeader* page2 = GetFullPage(kTestAllocSize); |
| 462 EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(page2) & WTF::kPartitionPageOffset
Mask); | 462 EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(page2) & WTF::kPartitionPageOffset
Mask); |
| 463 FreeFullPage(page2, kTestAllocSize); | 463 FreeFullPage(page2, kTestAllocSize); |
| 464 | 464 |
| 465 FreeFullPage(page1, kTestAllocSize); | 465 FreeFullPage(page1, kTestAllocSize); |
| 466 munmap(map1, WTF::kSystemPageSize); | 466 munmap(map1, WTF::kSystemPageSize); |
| 467 munmap(map2, WTF::kSystemPageSize); | 467 munmap(map2, WTF::kSystemPageSize); |
| 468 | 468 |
| 469 TestShutdown(); | 469 TestShutdown(); |
| 470 } | 470 } |
| 471 | 471 |
| 472 #endif // OS(UNIX) | 472 #endif // OS(POSIX) |
| 473 | 473 |
| 474 } // namespace | 474 } // namespace |
| 475 | 475 |
| 476 #endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) | 476 #endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) |
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