diff options
Diffstat (limited to 'absl/time')
| -rw-r--r-- | absl/time/BUILD.bazel | 1 | ||||
| -rw-r--r-- | absl/time/civil_time_benchmark.cc | 64 | ||||
| -rw-r--r-- | absl/time/internal/cctz/BUILD.bazel | 2 | ||||
| -rw-r--r-- | absl/time/time.h | 3 |
4 files changed, 63 insertions, 7 deletions
diff --git a/absl/time/BUILD.bazel b/absl/time/BUILD.bazel index 969ddd2e6acf..4d9c01c40a6c 100644 --- a/absl/time/BUILD.bazel +++ b/absl/time/BUILD.bazel @@ -110,6 +110,7 @@ cc_test( ":test_util", ":time", "//absl/base", + "//absl/hash", "@com_github_google_benchmark//:benchmark_main", ], ) diff --git a/absl/time/civil_time_benchmark.cc b/absl/time/civil_time_benchmark.cc index 567c2a33b12d..f30f636dccc8 100644 --- a/absl/time/civil_time_benchmark.cc +++ b/absl/time/civil_time_benchmark.cc @@ -14,17 +14,29 @@ #include "absl/time/civil_time.h" +#include <numeric> +#include <vector> + +#include "absl/hash/hash.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 +// Run on (12 X 3492 MHz CPUs); 2018-11-05T13:44:29.814239103-08:00 +// CPU: Intel Haswell with HyperThreading (6 cores) dL1:32KB dL2:256KB dL3:15MB +// Benchmark Time(ns) CPU(ns) Iterations +// ---------------------------------------------------------------- +// BM_Difference_Days 14.5 14.5 48531105 +// BM_Step_Days 12.6 12.6 54876006 +// BM_Format 587 587 1000000 +// BM_Parse 692 692 1000000 +// BM_RoundTripFormatParse 1309 1309 532075 +// BM_CivilYearAbslHash 0.710 0.710 976400000 +// BM_CivilMonthAbslHash 1.13 1.13 619500000 +// BM_CivilDayAbslHash 1.70 1.70 426000000 +// BM_CivilHourAbslHash 2.45 2.45 287600000 +// BM_CivilMinuteAbslHash 3.21 3.21 226200000 +// BM_CivilSecondAbslHash 4.10 4.10 171800000 void BM_Difference_Days(benchmark::State& state) { const absl::CivilDay c(2014, 8, 22); @@ -54,4 +66,42 @@ void BM_Format(benchmark::State& state) { } BENCHMARK(BM_Format); +template <typename T> +void BM_CivilTimeAbslHash(benchmark::State& state) { + const int kSize = 100000; + std::vector<T> civil_times(kSize); + std::iota(civil_times.begin(), civil_times.end(), T(2018)); + + absl::Hash<T> absl_hasher; + while (state.KeepRunningBatch(kSize)) { + for (const T civil_time : civil_times) { + benchmark::DoNotOptimize(absl_hasher(civil_time)); + } + } +} +void BM_CivilYearAbslHash(benchmark::State& state) { + BM_CivilTimeAbslHash<absl::CivilYear>(state); +} +void BM_CivilMonthAbslHash(benchmark::State& state) { + BM_CivilTimeAbslHash<absl::CivilMonth>(state); +} +void BM_CivilDayAbslHash(benchmark::State& state) { + BM_CivilTimeAbslHash<absl::CivilDay>(state); +} +void BM_CivilHourAbslHash(benchmark::State& state) { + BM_CivilTimeAbslHash<absl::CivilHour>(state); +} +void BM_CivilMinuteAbslHash(benchmark::State& state) { + BM_CivilTimeAbslHash<absl::CivilMinute>(state); +} +void BM_CivilSecondAbslHash(benchmark::State& state) { + BM_CivilTimeAbslHash<absl::CivilSecond>(state); +} +BENCHMARK(BM_CivilYearAbslHash); +BENCHMARK(BM_CivilMonthAbslHash); +BENCHMARK(BM_CivilDayAbslHash); +BENCHMARK(BM_CivilHourAbslHash); +BENCHMARK(BM_CivilMinuteAbslHash); +BENCHMARK(BM_CivilSecondAbslHash); + } // namespace diff --git a/absl/time/internal/cctz/BUILD.bazel b/absl/time/internal/cctz/BUILD.bazel index e913fad33cc4..e2cfe801f23d 100644 --- a/absl/time/internal/cctz/BUILD.bazel +++ b/absl/time/internal/cctz/BUILD.bazel @@ -12,6 +12,8 @@ # See the License for the specific language governing permissions and # limitations under the License. +package(features = ["-parse_headers"]) + licenses(["notice"]) # Apache License ### libraries diff --git a/absl/time/time.h b/absl/time/time.h index de12e5608b29..3fa9378fc849 100644 --- a/absl/time/time.h +++ b/absl/time/time.h @@ -1336,9 +1336,12 @@ constexpr Duration MakeNormalizedDuration(int64_t sec, int64_t ticks) { return (ticks < 0) ? MakeDuration(sec - 1, ticks + kTicksPerSecond) : MakeDuration(sec, ticks); } + // Provide access to the Duration representation. constexpr int64_t GetRepHi(Duration d) { return d.rep_hi_; } constexpr uint32_t GetRepLo(Duration d) { return d.rep_lo_; } + +// Returns true iff d is positive or negative infinity. constexpr bool IsInfiniteDuration(Duration d) { return GetRepLo(d) == ~0U; } // Returns an infinite Duration with the opposite sign. |