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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
//
// Copyright 2018 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/strings/str_join.h"
#include <string>
#include <vector>
#include <utility>
#include "benchmark/benchmark.h"
namespace {
void BM_Join2_Strings(benchmark::State& state) {
const int string_len = state.range(0);
const int num_strings = state.range(1);
const std::string s(string_len, 'x');
const std::vector<std::string> v(num_strings, s);
for (auto _ : state) {
std::string s = absl::StrJoin(v, "-");
benchmark::DoNotOptimize(s);
}
}
BENCHMARK(BM_Join2_Strings)
->ArgPair(1 << 0, 1 << 3)
->ArgPair(1 << 10, 1 << 3)
->ArgPair(1 << 13, 1 << 3)
->ArgPair(1 << 0, 1 << 10)
->ArgPair(1 << 10, 1 << 10)
->ArgPair(1 << 13, 1 << 10)
->ArgPair(1 << 0, 1 << 13)
->ArgPair(1 << 10, 1 << 13)
->ArgPair(1 << 13, 1 << 13);
void BM_Join2_Ints(benchmark::State& state) {
const int num_ints = state.range(0);
const std::vector<int> v(num_ints, 42);
for (auto _ : state) {
std::string s = absl::StrJoin(v, "-");
benchmark::DoNotOptimize(s);
}
}
BENCHMARK(BM_Join2_Ints)->Range(0, 1 << 13);
void BM_Join2_KeysAndValues(benchmark::State& state) {
const int string_len = state.range(0);
const int num_pairs = state.range(1);
const std::string s(string_len, 'x');
const std::vector<std::pair<std::string, int>> v(num_pairs,
std::make_pair(s, 42));
for (auto _ : state) {
std::string s = absl::StrJoin(v, ",", absl::PairFormatter("="));
benchmark::DoNotOptimize(s);
}
}
BENCHMARK(BM_Join2_KeysAndValues)
->ArgPair(1 << 0, 1 << 3)
->ArgPair(1 << 10, 1 << 3)
->ArgPair(1 << 13, 1 << 3)
->ArgPair(1 << 0, 1 << 10)
->ArgPair(1 << 10, 1 << 10)
->ArgPair(1 << 13, 1 << 10)
->ArgPair(1 << 0, 1 << 13)
->ArgPair(1 << 10, 1 << 13)
->ArgPair(1 << 13, 1 << 13);
void BM_JoinStreamable(benchmark::State& state) {
const int string_len = state.range(0);
const int num_strings = state.range(1);
const std::vector<std::string> v(num_strings, std::string(string_len, 'x'));
for (auto _ : state) {
std::string s = absl::StrJoin(v, "", absl::StreamFormatter());
benchmark::DoNotOptimize(s);
}
}
BENCHMARK(BM_JoinStreamable)
->ArgPair(0, 0)
->ArgPair(16, 1)
->ArgPair(256, 1)
->ArgPair(16, 16)
->ArgPair(256, 16)
->ArgPair(16, 256)
->ArgPair(256, 256);
} // namespace
|
