blob: 8dacbe6644e615ea83be5ef0e4167966c03083ae (
plain)
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
|
#include <experimental/filesystem>
#include "benchmark/benchmark_api.h"
#include "GenerateInput.hpp"
namespace fs = std::experimental::filesystem;
static const size_t TestNumInputs = 1024;
template <class GenInputs>
void BM_PathConstructString(benchmark::State &st, GenInputs gen) {
using namespace fs;
const auto in = gen(st.range(0));
path PP;
for (auto& Part : in)
PP /= Part;
benchmark::DoNotOptimize(PP.native().data());
while (st.KeepRunning()) {
const path P(PP.native());
benchmark::DoNotOptimize(P.native().data());
}
}
BENCHMARK_CAPTURE(BM_PathConstructString, iterate_elements,
getRandomStringInputs)->Arg(TestNumInputs);
template <class GenInputs>
void BM_PathIterateMultipleTimes(benchmark::State &st, GenInputs gen) {
using namespace fs;
const auto in = gen(st.range(0));
path PP;
for (auto& Part : in)
PP /= Part;
benchmark::DoNotOptimize(PP.native().data());
while (st.KeepRunning()) {
for (auto &E : PP) {
benchmark::DoNotOptimize(E.native().data());
}
benchmark::ClobberMemory();
}
}
BENCHMARK_CAPTURE(BM_PathIterateMultipleTimes, iterate_elements,
getRandomStringInputs)->Arg(TestNumInputs);
template <class GenInputs>
void BM_PathIterateOnce(benchmark::State &st, GenInputs gen) {
using namespace fs;
const auto in = gen(st.range(0));
path PP;
for (auto& Part : in)
PP /= Part;
benchmark::DoNotOptimize(PP.native().data());
while (st.KeepRunning()) {
const path P = PP.native();
for (auto &E : P) {
benchmark::DoNotOptimize(E.native().data());
}
benchmark::ClobberMemory();
}
}
BENCHMARK_CAPTURE(BM_PathIterateOnce, iterate_elements,
getRandomStringInputs)->Arg(TestNumInputs);
template <class GenInputs>
void BM_PathIterateOnceBackwards(benchmark::State &st, GenInputs gen) {
using namespace fs;
const auto in = gen(st.range(0));
path PP;
for (auto& Part : in)
PP /= Part;
benchmark::DoNotOptimize(PP.native().data());
while (st.KeepRunning()) {
const path P = PP.native();
const auto B = P.begin();
auto I = P.end();
while (I != B) {
--I;
benchmark::DoNotOptimize(*I);
}
benchmark::DoNotOptimize(*I);
}
}
BENCHMARK_CAPTURE(BM_PathIterateOnceBackwards, iterate_elements,
getRandomStringInputs)->Arg(TestNumInputs);
BENCHMARK_MAIN()
|
