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Side by Side Diff: third_party/WebKit/Source/wtf/allocator/PartitionAllocTest.cpp

Issue 2512593002: Move wtf/BitwiseOperations.h into base/bits.h. (Closed)
Patch Set: Add a TODO. Created 4 years, 1 month ago
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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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2106 2106
2107 EXPECT_FALSE(page->freelistHead); 2107 EXPECT_FALSE(page->freelistHead);
2108 2108
2109 partitionFreeGeneric(genericAllocator.root(), ptr1); 2109 partitionFreeGeneric(genericAllocator.root(), ptr1);
2110 partitionFreeGeneric(genericAllocator.root(), ptr2); 2110 partitionFreeGeneric(genericAllocator.root(), ptr2);
2111 } 2111 }
2112 2112
2113 TestShutdown(); 2113 TestShutdown();
2114 } 2114 }
2115 2115
2116 // Tests that the countLeadingZeros() functions work to our satisfaction.
2117 // It doesn't seem worth the overhead of a whole new file for these tests, so
2118 // we'll put them here since partitionAllocGeneric will depend heavily on these
2119 // functions working correctly.
2120 TEST(PartitionAllocTest, CLZWorks) {
2121 EXPECT_EQ(32u, countLeadingZeros32(0u));
2122 EXPECT_EQ(31u, countLeadingZeros32(1u));
2123 EXPECT_EQ(1u, countLeadingZeros32(1u << 30));
2124 EXPECT_EQ(0u, countLeadingZeros32(1u << 31));
2125
2126 #if CPU(64BIT)
2127 EXPECT_EQ(64u, countLeadingZerosSizet(0ull));
2128 EXPECT_EQ(63u, countLeadingZerosSizet(1ull));
2129 EXPECT_EQ(32u, countLeadingZerosSizet(1ull << 31));
2130 EXPECT_EQ(1u, countLeadingZerosSizet(1ull << 62));
2131 EXPECT_EQ(0u, countLeadingZerosSizet(1ull << 63));
2132 #else
2133 EXPECT_EQ(32u, countLeadingZerosSizet(0u));
2134 EXPECT_EQ(31u, countLeadingZerosSizet(1u));
2135 EXPECT_EQ(1u, countLeadingZerosSizet(1u << 30));
2136 EXPECT_EQ(0u, countLeadingZerosSizet(1u << 31));
2137 #endif
2138 }
2139
2140 } // namespace WTF 2116 } // namespace WTF
2141 2117
2142 #endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) 2118 #endif // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
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