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author | Alexey Salmin <alexey.salmin@gmail.com> | 2022-02-10 16:49:37 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:49:37 +0300 |
commit | 3c5b1607b38f637d2f3313791ed25c2e080d2647 (patch) | |
tree | 99be7b96e7c66612fbca94331100ef3b5fedcb88 /util/system/unaligned_mem_ut.cpp | |
parent | de89752358147d7b25ef59a85b431bb564068a49 (diff) | |
download | ydb-3c5b1607b38f637d2f3313791ed25c2e080d2647.tar.gz |
Restoring authorship annotation for Alexey Salmin <alexey.salmin@gmail.com>. Commit 1 of 2.
Diffstat (limited to 'util/system/unaligned_mem_ut.cpp')
-rw-r--r-- | util/system/unaligned_mem_ut.cpp | 146 |
1 files changed, 73 insertions, 73 deletions
diff --git a/util/system/unaligned_mem_ut.cpp b/util/system/unaligned_mem_ut.cpp index 9de3f3e931..3c575d4f69 100644 --- a/util/system/unaligned_mem_ut.cpp +++ b/util/system/unaligned_mem_ut.cpp @@ -3,94 +3,94 @@ #include <library/cpp/testing/benchmark/bench.h> #include <library/cpp/testing/unittest/registar.h> -#include <util/system/compiler.h> - -#ifdef Y_HAVE_INT128 -namespace { - struct TUInt128 { - bool operator==(const TUInt128& other) const { - return x == other.x; - } - - ui64 Low() const { - return (ui64)x; - } - - ui64 High() const { - return (ui64)(x >> 64); - } - - static TUInt128 Max() { +#include <util/system/compiler.h> + +#ifdef Y_HAVE_INT128 +namespace { + struct TUInt128 { + bool operator==(const TUInt128& other) const { + return x == other.x; + } + + ui64 Low() const { + return (ui64)x; + } + + ui64 High() const { + return (ui64)(x >> 64); + } + + static TUInt128 Max() { return {~(__uint128_t)0}; - } - - __uint128_t x; - }; -} -#endif - + } + + __uint128_t x; + }; +} +#endif + Y_UNIT_TEST_SUITE(UnalignedMem) { Y_UNIT_TEST(TestReadWrite) { - alignas(ui64) char buf[100]; + alignas(ui64) char buf[100]; WriteUnaligned<ui16>(buf + 1, (ui16)1); WriteUnaligned<ui32>(buf + 1 + 2, (ui32)2); WriteUnaligned<ui64>(buf + 1 + 2 + 4, (ui64)3); - UNIT_ASSERT_VALUES_EQUAL(ReadUnaligned<ui16>(buf + 1), 1); - UNIT_ASSERT_VALUES_EQUAL(ReadUnaligned<ui32>(buf + 1 + 2), 2); - UNIT_ASSERT_VALUES_EQUAL(ReadUnaligned<ui64>(buf + 1 + 2 + 4), 3); + UNIT_ASSERT_VALUES_EQUAL(ReadUnaligned<ui16>(buf + 1), 1); + UNIT_ASSERT_VALUES_EQUAL(ReadUnaligned<ui32>(buf + 1 + 2), 2); + UNIT_ASSERT_VALUES_EQUAL(ReadUnaligned<ui64>(buf + 1 + 2 + 4), 3); } - + Y_UNIT_TEST(TestReadWriteRuntime) { - // Unlike the test above, this test avoids compile-time execution by a smart compiler. - // It is required to catch the SIGSEGV in case compiler emits an alignment-sensitive instruction. - - alignas(ui64) static char buf[100] = {0}; // static is required for Clobber to work - + // Unlike the test above, this test avoids compile-time execution by a smart compiler. + // It is required to catch the SIGSEGV in case compiler emits an alignment-sensitive instruction. + + alignas(ui64) static char buf[100] = {0}; // static is required for Clobber to work + WriteUnaligned<ui16>(buf + 1, (ui16)1); WriteUnaligned<ui32>(buf + 1 + 2, (ui32)2); WriteUnaligned<ui64>(buf + 1 + 2 + 4, (ui64)3); - NBench::Clobber(); - - auto val1 = ReadUnaligned<ui16>(buf + 1); - auto val2 = ReadUnaligned<ui32>(buf + 1 + 2); - auto val3 = ReadUnaligned<ui64>(buf + 1 + 2 + 4); - - Y_DO_NOT_OPTIMIZE_AWAY(&val1); - Y_DO_NOT_OPTIMIZE_AWAY(&val2); - Y_DO_NOT_OPTIMIZE_AWAY(&val3); - Y_DO_NOT_OPTIMIZE_AWAY(val1); - Y_DO_NOT_OPTIMIZE_AWAY(val2); - Y_DO_NOT_OPTIMIZE_AWAY(val3); - - UNIT_ASSERT_VALUES_EQUAL(val1, 1); - UNIT_ASSERT_VALUES_EQUAL(val2, 2); - UNIT_ASSERT_VALUES_EQUAL(val3, 3); - } -#ifdef Y_HAVE_INT128 + NBench::Clobber(); + + auto val1 = ReadUnaligned<ui16>(buf + 1); + auto val2 = ReadUnaligned<ui32>(buf + 1 + 2); + auto val3 = ReadUnaligned<ui64>(buf + 1 + 2 + 4); + + Y_DO_NOT_OPTIMIZE_AWAY(&val1); + Y_DO_NOT_OPTIMIZE_AWAY(&val2); + Y_DO_NOT_OPTIMIZE_AWAY(&val3); + Y_DO_NOT_OPTIMIZE_AWAY(val1); + Y_DO_NOT_OPTIMIZE_AWAY(val2); + Y_DO_NOT_OPTIMIZE_AWAY(val3); + + UNIT_ASSERT_VALUES_EQUAL(val1, 1); + UNIT_ASSERT_VALUES_EQUAL(val2, 2); + UNIT_ASSERT_VALUES_EQUAL(val3, 3); + } +#ifdef Y_HAVE_INT128 Y_UNIT_TEST(TestReadWrite128) { - alignas(TUInt128) char buf[100] = {0}; - + alignas(TUInt128) char buf[100] = {0}; + WriteUnaligned<TUInt128>(buf + 1, TUInt128::Max()); - auto val = ReadUnaligned<TUInt128>(buf + 1); - UNIT_ASSERT(val == TUInt128::Max()); - } + auto val = ReadUnaligned<TUInt128>(buf + 1); + UNIT_ASSERT(val == TUInt128::Max()); + } Y_UNIT_TEST(TestReadWriteRuntime128) { - // Unlike the test above, this test avoids compile-time execution by a smart compiler. - // It is required to catch the SIGSEGV in case compiler emits an alignment-sensitive instruction. - - alignas(TUInt128) static char buf[100] = {0}; // static is required for Clobber to work - + // Unlike the test above, this test avoids compile-time execution by a smart compiler. + // It is required to catch the SIGSEGV in case compiler emits an alignment-sensitive instruction. + + alignas(TUInt128) static char buf[100] = {0}; // static is required for Clobber to work + WriteUnaligned<TUInt128>(buf + 1, TUInt128::Max()); - NBench::Clobber(); - - auto val = ReadUnaligned<TUInt128>(buf + 1); - Y_DO_NOT_OPTIMIZE_AWAY(&val); - Y_DO_NOT_OPTIMIZE_AWAY(val.Low()); - Y_DO_NOT_OPTIMIZE_AWAY(val.High()); - - UNIT_ASSERT(val == TUInt128::Max()); - } -#endif + NBench::Clobber(); + + auto val = ReadUnaligned<TUInt128>(buf + 1); + Y_DO_NOT_OPTIMIZE_AWAY(&val); + Y_DO_NOT_OPTIMIZE_AWAY(val.Low()); + Y_DO_NOT_OPTIMIZE_AWAY(val.High()); + + UNIT_ASSERT(val == TUInt128::Max()); + } +#endif } |