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 "build/build_config.h" 8 #include "testing/gtest/include/gtest/gtest.h" 9 10 #define EXPECT_ALIGNED(ptr, align) \ 11 EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(ptr) & (align - 1)) 12 13 namespace { 14 15 using base::AlignedMemory; 16 17 TEST(AlignedMemoryTest, StaticAlignment) { 18 static AlignedMemory<8, 8> raw8; 19 static AlignedMemory<8, 16> raw16; 20 static AlignedMemory<8, 256> raw256; 21 static AlignedMemory<8, 4096> raw4096; 22 23 EXPECT_EQ(8u, ALIGNOF(raw8)); 24 EXPECT_EQ(16u, ALIGNOF(raw16)); 25 EXPECT_EQ(256u, ALIGNOF(raw256)); 26 EXPECT_EQ(4096u, ALIGNOF(raw4096)); 27 28 EXPECT_ALIGNED(raw8.void_data(), 8); 29 EXPECT_ALIGNED(raw16.void_data(), 16); 30 EXPECT_ALIGNED(raw256.void_data(), 256); 31 EXPECT_ALIGNED(raw4096.void_data(), 4096); 32 } 33 34 TEST(AlignedMemoryTest, StackAlignment) { 35 AlignedMemory<8, 8> raw8; 36 AlignedMemory<8, 16> raw16; 37 AlignedMemory<8, 128> raw128; 38 39 EXPECT_EQ(8u, ALIGNOF(raw8)); 40 EXPECT_EQ(16u, ALIGNOF(raw16)); 41 EXPECT_EQ(128u, ALIGNOF(raw128)); 42 43 EXPECT_ALIGNED(raw8.void_data(), 8); 44 EXPECT_ALIGNED(raw16.void_data(), 16); 45 46 // TODO(ios): __attribute__((aligned(X))) with X >= 128 does not works on 47 // the stack when building for arm64 on iOS, http://crbug.com/349003 48 #if !(defined(OS_IOS) && defined(ARCH_CPU_ARM64)) 49 EXPECT_ALIGNED(raw128.void_data(), 128); 50 51 // NaCl x86-64 compiler emits non-validating instructions for >128 52 // bytes alignment. 53 // http://www.chromium.org/nativeclient/design-documents/nacl-sfi-model-on-x86-64-systems 54 // TODO(hamaji): Ideally, NaCl compiler for x86-64 should workaround 55 // this limitation and this #if should be removed. 56 // https://code.google.com/p/nativeclient/issues/detail?id=3463 57 #if !(defined(OS_NACL) && defined(ARCH_CPU_X86_64)) 58 AlignedMemory<8, 256> raw256; 59 EXPECT_EQ(256u, ALIGNOF(raw256)); 60 EXPECT_ALIGNED(raw256.void_data(), 256); 61 62 // TODO(ios): This test hits an armv7 bug in clang. crbug.com/138066 63 #if !(defined(OS_IOS) && defined(ARCH_CPU_ARM_FAMILY)) 64 AlignedMemory<8, 4096> raw4096; 65 EXPECT_EQ(4096u, ALIGNOF(raw4096)); 66 EXPECT_ALIGNED(raw4096.void_data(), 4096); 67 #endif // !(defined(OS_IOS) && defined(ARCH_CPU_ARM_FAMILY)) 68 #endif // !(defined(OS_NACL) && defined(ARCH_CPU_X86_64)) 69 #endif // !(defined(OS_IOS) && defined(ARCH_CPU_ARM64)) 70 } 71 72 TEST(AlignedMemoryTest, DynamicAllocation) { 73 void* p = base::AlignedAlloc(8, 8); 74 EXPECT_TRUE(p); 75 EXPECT_ALIGNED(p, 8); 76 base::AlignedFree(p); 77 78 p = base::AlignedAlloc(8, 16); 79 EXPECT_TRUE(p); 80 EXPECT_ALIGNED(p, 16); 81 base::AlignedFree(p); 82 83 p = base::AlignedAlloc(8, 256); 84 EXPECT_TRUE(p); 85 EXPECT_ALIGNED(p, 256); 86 base::AlignedFree(p); 87 88 p = base::AlignedAlloc(8, 4096); 89 EXPECT_TRUE(p); 90 EXPECT_ALIGNED(p, 4096); 91 base::AlignedFree(p); 92 } 93 94 TEST(AlignedMemoryTest, ScopedDynamicAllocation) { 95 scoped_ptr<float, base::AlignedFreeDeleter> p( 96 static_cast<float*>(base::AlignedAlloc(8, 8))); 97 EXPECT_TRUE(p.get()); 98 EXPECT_ALIGNED(p.get(), 8); 99 } 100 101 } // namespace 102
