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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/memory/aligned_memory.h" | |
| 6 #include "base/memory/scoped_ptr.h" | |
| 7 #include "testing/gtest/include/gtest/gtest.h" | |
| 8 | |
| 9 #define EXPECT_ALIGNED(ptr, align) \ | |
| 10 EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(ptr) & (align - 1)) | |
| 11 | |
| 12 namespace { | |
| 13 | |
| 14 using base::AlignedMemory; | |
| 15 | |
| 16 TEST(AlignedMemoryTest, StaticAlignment) { | |
| 17 static AlignedMemory<8, 8> raw8; | |
| 18 static AlignedMemory<8, 16> raw16; | |
| 19 static AlignedMemory<8, 256> raw256; | |
| 20 static AlignedMemory<8, 4096> raw4096; | |
| 21 | |
| 22 EXPECT_EQ(8u, ALIGNOF(raw8)); | |
| 23 EXPECT_EQ(16u, ALIGNOF(raw16)); | |
| 24 EXPECT_EQ(256u, ALIGNOF(raw256)); | |
| 25 EXPECT_EQ(4096u, ALIGNOF(raw4096)); | |
| 26 | |
| 27 EXPECT_ALIGNED(raw8.void_data(), 8); | |
| 28 EXPECT_ALIGNED(raw16.void_data(), 16); | |
| 29 EXPECT_ALIGNED(raw256.void_data(), 256); | |
| 30 EXPECT_ALIGNED(raw4096.void_data(), 4096); | |
| 31 } | |
| 32 | |
| 33 TEST(AlignedMemoryTest, StackAlignment) { | |
| 34 AlignedMemory<8, 8> raw8; | |
| 35 AlignedMemory<8, 16> raw16; | |
| 36 AlignedMemory<8, 128> raw128; | |
| 37 | |
| 38 EXPECT_EQ(8u, ALIGNOF(raw8)); | |
| 39 EXPECT_EQ(16u, ALIGNOF(raw16)); | |
| 40 EXPECT_EQ(128u, ALIGNOF(raw128)); | |
| 41 | |
| 42 EXPECT_ALIGNED(raw8.void_data(), 8); | |
| 43 EXPECT_ALIGNED(raw16.void_data(), 16); | |
| 44 | |
| 45 // TODO(ios): __attribute__((aligned(X))) with X >= 128 does not works on | |
| 46 // the stack when building for arm64 on iOS, http://crbug.com/349003 | |
| 47 #if !(defined(OS_IOS) && defined(ARCH_CPU_ARM64)) | |
| 48 EXPECT_ALIGNED(raw128.void_data(), 128); | |
| 49 | |
| 50 // NaCl x86-64 compiler emits non-validating instructions for >128 | |
| 51 // bytes alignment. | |
| 52 // http://www.chromium.org/nativeclient/design-documents/nacl-sfi-model-on-x86
-64-systems | |
| 53 // TODO(hamaji): Ideally, NaCl compiler for x86-64 should workaround | |
| 54 // this limitation and this #if should be removed. | |
| 55 // https://code.google.com/p/nativeclient/issues/detail?id=3463 | |
| 56 #if !(defined(OS_NACL) && defined(ARCH_CPU_X86_64)) | |
| 57 AlignedMemory<8, 256> raw256; | |
| 58 EXPECT_EQ(256u, ALIGNOF(raw256)); | |
| 59 EXPECT_ALIGNED(raw256.void_data(), 256); | |
| 60 | |
| 61 // TODO(ios): This test hits an armv7 bug in clang. crbug.com/138066 | |
| 62 #if !(defined(OS_IOS) && defined(ARCH_CPU_ARM_FAMILY)) | |
| 63 AlignedMemory<8, 4096> raw4096; | |
| 64 EXPECT_EQ(4096u, ALIGNOF(raw4096)); | |
| 65 EXPECT_ALIGNED(raw4096.void_data(), 4096); | |
| 66 #endif // !(defined(OS_IOS) && defined(ARCH_CPU_ARM_FAMILY)) | |
| 67 #endif // !(defined(OS_NACL) && defined(ARCH_CPU_X86_64)) | |
| 68 #endif // !(defined(OS_IOS) && defined(ARCH_CPU_ARM64)) | |
| 69 } | |
| 70 | |
| 71 TEST(AlignedMemoryTest, DynamicAllocation) { | |
| 72 void* p = base::AlignedAlloc(8, 8); | |
| 73 EXPECT_TRUE(p); | |
| 74 EXPECT_ALIGNED(p, 8); | |
| 75 base::AlignedFree(p); | |
| 76 | |
| 77 p = base::AlignedAlloc(8, 16); | |
| 78 EXPECT_TRUE(p); | |
| 79 EXPECT_ALIGNED(p, 16); | |
| 80 base::AlignedFree(p); | |
| 81 | |
| 82 p = base::AlignedAlloc(8, 256); | |
| 83 EXPECT_TRUE(p); | |
| 84 EXPECT_ALIGNED(p, 256); | |
| 85 base::AlignedFree(p); | |
| 86 | |
| 87 p = base::AlignedAlloc(8, 4096); | |
| 88 EXPECT_TRUE(p); | |
| 89 EXPECT_ALIGNED(p, 4096); | |
| 90 base::AlignedFree(p); | |
| 91 } | |
| 92 | |
| 93 TEST(AlignedMemoryTest, ScopedDynamicAllocation) { | |
| 94 scoped_ptr<float, base::AlignedFreeDeleter> p( | |
| 95 static_cast<float*>(base::AlignedAlloc(8, 8))); | |
| 96 EXPECT_TRUE(p.get()); | |
| 97 EXPECT_ALIGNED(p.get(), 8); | |
| 98 } | |
| 99 | |
| 100 } // namespace | |
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