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
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/**
* Copyright (C) 2023-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include <benchmark/benchmark.h>
#include <random>
#include <vector>
#include "mongo/db/geo/hash.h"
namespace mongo {
namespace {
void BM_hashSpeed(benchmark::State& state) {
auto length = state.range();
std::vector<GeoHash> hashes(length);
std::random_device device{};
uint32_t valueX = device();
uint32_t valueY = device();
for (auto _ : state) {
for (auto& geohash : hashes) {
auto newHash = GeoHash(valueX, valueY, 32);
benchmark::DoNotOptimize(newHash);
geohash = std::move(newHash);
benchmark::ClobberMemory();
}
}
}
void BM_unhashSpeed(benchmark::State& state) {
auto length = state.range();
std::vector<GeoHash> hashes(length);
std::random_device device{};
for (auto& geohash : hashes) {
geohash = GeoHash(device(), device(), 32);
}
for (auto _ : state) {
for (auto& geohash : hashes) {
uint32_t x, y;
geohash.unhash(&x, &y);
benchmark::DoNotOptimize(x);
benchmark::DoNotOptimize(y);
}
}
}
BENCHMARK(BM_hashSpeed)->Range(1, 1 << 10);
BENCHMARK(BM_unhashSpeed)->Range(1, 1 << 10);
} // namespace
} // namespace mongo
|
