37 lines
951 B
C++
37 lines
951 B
C++
/*
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* Copyright (C) 2018-2022 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "shared/source/helpers/hash.h"
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#include "gtest/gtest.h"
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using namespace NEO;
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TEST(HashTests, givenSamePointersWhenHashIsCalculatedThenSame32BitValuesAreGenerated) {
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uintptr_t ptr1UI = 1;
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uintptr_t ptr2UI = 1;
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void *ptr1 = reinterpret_cast<void *>(ptr1UI);
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void *ptr2 = reinterpret_cast<void *>(ptr2UI);
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uint32_t hash1 = hashPtrToU32(ptr1);
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uint32_t hash2 = hashPtrToU32(ptr2);
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EXPECT_EQ(hash1, hash2);
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}
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TEST(HashTests, givenDifferentPointersWhenHashIsCalculatedThenUnique32BitValuesAreGenerated) {
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uintptr_t ptr1UI = 1;
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uintptr_t ptr2UI = ptr1UI | (ptr1UI << ((sizeof(uintptr_t) / 2) * 8));
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void *ptr1 = reinterpret_cast<void *>(ptr1UI);
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void *ptr2 = reinterpret_cast<void *>(ptr2UI);
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uint32_t hash1 = hashPtrToU32(ptr1);
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uint32_t hash2 = hashPtrToU32(ptr2);
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EXPECT_NE(hash1, hash2);
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}
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