1 // Copyright 2018 The Abseil Authors.
2 // Licensed under the Apache License, Version 2.0 (the "License");
3 // you may not use this file except in compliance with the License.
4 // You may obtain a copy of the License at
5 //
6 // https://www.apache.org/licenses/LICENSE-2.0
7 //
8 // Unless required by applicable law or agreed to in writing, software
9 // distributed under the License is distributed on an "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 // See the License for the specific language governing permissions and
12 // limitations under the License.
13
14 #include <cstddef>
15 #include <string>
16
17 #include "absl/time/internal/test_util.h"
18 #include "absl/time/time.h"
19 #include "benchmark/benchmark.h"
20
21 namespace {
22
23 namespace {
24 const char* const kFormats[] = {
25 absl::RFC1123_full, // 0
26 absl::RFC1123_no_wday, // 1
27 absl::RFC3339_full, // 2
28 absl::RFC3339_sec, // 3
29 "%Y-%m-%d%ET%H:%M:%S", // 4
30 "%Y-%m-%d", // 5
31 };
32 const int kNumFormats = sizeof(kFormats) / sizeof(kFormats[0]);
33 } // namespace
34
BM_Format_FormatTime(benchmark::State & state)35 void BM_Format_FormatTime(benchmark::State& state) {
36 const std::string fmt = kFormats[state.range(0)];
37 state.SetLabel(fmt);
38 const absl::TimeZone lax =
39 absl::time_internal::LoadTimeZone("America/Los_Angeles");
40 const absl::Time t =
41 absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax) +
42 absl::Nanoseconds(1);
43 while (state.KeepRunning()) {
44 benchmark::DoNotOptimize(absl::FormatTime(fmt, t, lax).length());
45 }
46 }
47 BENCHMARK(BM_Format_FormatTime)->DenseRange(0, kNumFormats - 1);
48
BM_Format_ParseTime(benchmark::State & state)49 void BM_Format_ParseTime(benchmark::State& state) {
50 const std::string fmt = kFormats[state.range(0)];
51 state.SetLabel(fmt);
52 const absl::TimeZone lax =
53 absl::time_internal::LoadTimeZone("America/Los_Angeles");
54 absl::Time t = absl::FromCivil(absl::CivilSecond(1977, 6, 28, 9, 8, 7), lax) +
55 absl::Nanoseconds(1);
56 const std::string when = absl::FormatTime(fmt, t, lax);
57 std::string err;
58 while (state.KeepRunning()) {
59 benchmark::DoNotOptimize(absl::ParseTime(fmt, when, lax, &t, &err));
60 }
61 }
62 BENCHMARK(BM_Format_ParseTime)->DenseRange(0, kNumFormats - 1);
63
64 } // namespace
65