96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/memory/aligned_memory.h"
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#include "base/memory/scoped_ptr.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#define EXPECT_ALIGNED(ptr, align) \
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EXPECT_EQ(0u, reinterpret_cast<uintptr_t>(ptr) & (align - 1))
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namespace {
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using base::AlignedMemory;
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TEST(AlignedMemoryTest, StaticAlignment) {
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static AlignedMemory<8, 8> raw8;
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static AlignedMemory<8, 16> raw16;
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static AlignedMemory<8, 256> raw256;
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static AlignedMemory<8, 4096> raw4096;
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EXPECT_EQ(8u, ALIGNOF(raw8));
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EXPECT_EQ(16u, ALIGNOF(raw16));
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EXPECT_EQ(256u, ALIGNOF(raw256));
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EXPECT_EQ(4096u, ALIGNOF(raw4096));
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EXPECT_ALIGNED(raw8.void_data(), 8);
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EXPECT_ALIGNED(raw16.void_data(), 16);
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EXPECT_ALIGNED(raw256.void_data(), 256);
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EXPECT_ALIGNED(raw4096.void_data(), 4096);
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}
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TEST(AlignedMemoryTest, StackAlignment) {
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AlignedMemory<8, 8> raw8;
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AlignedMemory<8, 16> raw16;
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AlignedMemory<8, 128> raw128;
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EXPECT_EQ(8u, ALIGNOF(raw8));
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EXPECT_EQ(16u, ALIGNOF(raw16));
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EXPECT_EQ(128u, ALIGNOF(raw128));
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EXPECT_ALIGNED(raw8.void_data(), 8);
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EXPECT_ALIGNED(raw16.void_data(), 16);
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EXPECT_ALIGNED(raw128.void_data(), 128);
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// NaCl x86-64 compiler emits non-validating instructions for >128
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// bytes alignment.
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// http://www.chromium.org/nativeclient/design-documents/nacl-sfi-model-on-x86-64-systems
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// TODO(hamaji): Ideally, NaCl compiler for x86-64 should workaround
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// this limitation and this #if should be removed.
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// https://code.google.com/p/nativeclient/issues/detail?id=3463
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#if !(defined(OS_NACL) && defined(ARCH_CPU_X86_64))
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AlignedMemory<8, 256> raw256;
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EXPECT_EQ(256u, ALIGNOF(raw256));
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EXPECT_ALIGNED(raw256.void_data(), 256);
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// TODO(ios): This test hits an armv7 bug in clang. crbug.com/138066
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#if !(defined(OS_IOS) && defined(ARCH_CPU_ARM_FAMILY))
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AlignedMemory<8, 4096> raw4096;
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EXPECT_EQ(4096u, ALIGNOF(raw4096));
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EXPECT_ALIGNED(raw4096.void_data(), 4096);
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#endif // !(defined(OS_IOS) && defined(ARCH_CPU_ARM_FAMILY))
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#endif
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}
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TEST(AlignedMemoryTest, DynamicAllocation) {
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void* p = base::AlignedAlloc(8, 8);
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EXPECT_TRUE(p);
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EXPECT_ALIGNED(p, 8);
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base::AlignedFree(p);
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p = base::AlignedAlloc(8, 16);
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EXPECT_TRUE(p);
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EXPECT_ALIGNED(p, 16);
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base::AlignedFree(p);
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p = base::AlignedAlloc(8, 256);
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EXPECT_TRUE(p);
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EXPECT_ALIGNED(p, 256);
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base::AlignedFree(p);
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p = base::AlignedAlloc(8, 4096);
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EXPECT_TRUE(p);
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EXPECT_ALIGNED(p, 4096);
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base::AlignedFree(p);
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}
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TEST(AlignedMemoryTest, ScopedDynamicAllocation) {
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scoped_ptr_malloc<float, base::ScopedPtrAlignedFree> p(
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static_cast<float*>(base::AlignedAlloc(8, 8)));
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EXPECT_TRUE(p.get());
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EXPECT_ALIGNED(p.get(), 8);
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}
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} // namespace
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