summaryrefslogtreecommitdiff
path: root/absl/time/civil_time_benchmark.cc
diff options
context:
space:
mode:
authorGravatar Abseil Team <absl-team@google.com>2018-10-10 12:31:37 -0700
committerGravatar CJ Johnson <johnsoncj@google.com>2018-10-10 15:35:19 -0400
commitf340f773edab951656b19b6f1a77c964a78ec4c2 (patch)
treec42bf7faf49fb2355661c9f39c40513bc1ff2697 /absl/time/civil_time_benchmark.cc
parent445998d7ac4e5d3c50411d377e3b50e960d2d6c2 (diff)
Export of internal Abseil changes.
-- 906c47420646d510edd2479d5542c56f5fa31b65 by CJ Johnson <johnsoncj@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 216573923 -- 74560d4afd2b605909e677c6fc3076049fb3010a by Eric Fiselier <ericwf@google.com>: Avoid -Wformat-pedantic in benchmark. PiperOrigin-RevId: 216523769 -- 9bcc9da8b03e6d1ea43ee78931256c5541cb9686 by Eric Fiselier <ericwf@google.com>: Delete unused CityHash functions. PiperOrigin-RevId: 216464492 -- a42563b394c89fbb4c55cb5a6a5edbf96d271eea by Abseil Team <absl-team@google.com>: Introduce new Abseil interfaces for converting between civil times and absolute times.s Deprecates absl::ConvertDateTime() and absl::FromDateTime(). PiperOrigin-RevId: 216424948 -- 088e11235124267517d7f137854fa5554679c24f by Eric Fiselier <ericwf@google.com>: Remove unneeded break statements in test. PiperOrigin-RevId: 216403321 GitOrigin-RevId: 906c47420646d510edd2479d5542c56f5fa31b65 Change-Id: Idb44420be623e369c66f5a9c92bdc9ab46d3ec92
Diffstat (limited to 'absl/time/civil_time_benchmark.cc')
-rw-r--r--absl/time/civil_time_benchmark.cc57
1 files changed, 57 insertions, 0 deletions
diff --git a/absl/time/civil_time_benchmark.cc b/absl/time/civil_time_benchmark.cc
new file mode 100644
index 00000000..567c2a33
--- /dev/null
+++ b/absl/time/civil_time_benchmark.cc
@@ -0,0 +1,57 @@
+// 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
+//
+// http://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/time/civil_time.h"
+
+#include "benchmark/benchmark.h"
+
+namespace {
+
+// Benchmark Time(ns) CPU(ns) Iterations
+// -------------------------------------------------------------------------
+// BM_Difference_Days 20 20 34542508
+// BM_Step_Days 15 15 48098146
+// BM_Format 688 687 1019803
+// BM_Parse 921 920 762788
+// BM_RoundTripFormatParse 1766 1764 396092
+
+void BM_Difference_Days(benchmark::State& state) {
+ const absl::CivilDay c(2014, 8, 22);
+ const absl::CivilDay epoch(1970, 1, 1);
+ while (state.KeepRunning()) {
+ const absl::civil_diff_t n = c - epoch;
+ benchmark::DoNotOptimize(n);
+ }
+}
+BENCHMARK(BM_Difference_Days);
+
+void BM_Step_Days(benchmark::State& state) {
+ const absl::CivilDay kStart(2014, 8, 22);
+ absl::CivilDay c = kStart;
+ while (state.KeepRunning()) {
+ benchmark::DoNotOptimize(++c);
+ }
+}
+BENCHMARK(BM_Step_Days);
+
+void BM_Format(benchmark::State& state) {
+ const absl::CivilSecond c(2014, 1, 2, 3, 4, 5);
+ while (state.KeepRunning()) {
+ const std::string s = absl::FormatCivilTime(c);
+ benchmark::DoNotOptimize(s);
+ }
+}
+BENCHMARK(BM_Format);
+
+} // namespace