1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
/*
* Copyright (C) 2018-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/helpers/hash.h"
#include "gtest/gtest.h"
using namespace NEO;
TEST(HashTests, givenSamePointersWhenHashIsCalculatedThenSame32BitValuesAreGenerated) {
uintptr_t ptr1UI = 1;
uintptr_t ptr2UI = 1;
void *ptr1 = reinterpret_cast<void *>(ptr1UI);
void *ptr2 = reinterpret_cast<void *>(ptr2UI);
uint32_t hash1 = hashPtrToU32(ptr1);
uint32_t hash2 = hashPtrToU32(ptr2);
EXPECT_EQ(hash1, hash2);
}
TEST(HashTests, givenDifferentPointersWhenHashIsCalculatedThenUnique32BitValuesAreGenerated) {
uintptr_t ptr1UI = 1;
uintptr_t ptr2UI = ptr1UI | (ptr1UI << ((sizeof(uintptr_t) / 2) * 8));
void *ptr1 = reinterpret_cast<void *>(ptr1UI);
void *ptr2 = reinterpret_cast<void *>(ptr2UI);
uint32_t hash1 = hashPtrToU32(ptr1);
uint32_t hash2 = hashPtrToU32(ptr2);
EXPECT_NE(hash1, hash2);
}
|
