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authorGravatar Pirate Praveen <praveen@debian.org>2023-03-06 20:25:41 +0530
committerGravatar Pirate Praveen <praveen@debian.org>2023-03-06 20:25:41 +0530
commit079dd8737bbaaaeeca3a95c2b858a62d8a620d5a (patch)
tree6af54966e17bcfe48ecdb0b5cdf43cc953d5358c /absl/synchronization/blocking_counter_benchmark.cc
parent2bbc47f307f1e24f3f44a108d571bffa5a3faa63 (diff)
parentf5afcb784c9b1c501c1144b7aab84555881ca871 (diff)
Merge tag '20220623.1-1' into bullseye-backports-staging
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diff --git a/absl/synchronization/blocking_counter_benchmark.cc b/absl/synchronization/blocking_counter_benchmark.cc
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+// Copyright 2021 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 <limits>
+
+#include "absl/synchronization/blocking_counter.h"
+#include "absl/synchronization/internal/thread_pool.h"
+#include "benchmark/benchmark.h"
+
+namespace {
+
+void BM_BlockingCounter_SingleThread(benchmark::State& state) {
+ for (auto _ : state) {
+ int iterations = state.range(0);
+ absl::BlockingCounter counter{iterations};
+ for (int i = 0; i < iterations; ++i) {
+ counter.DecrementCount();
+ }
+ counter.Wait();
+ }
+}
+BENCHMARK(BM_BlockingCounter_SingleThread)
+ ->ArgName("iterations")
+ ->Arg(2)
+ ->Arg(4)
+ ->Arg(16)
+ ->Arg(64)
+ ->Arg(256);
+
+void BM_BlockingCounter_DecrementCount(benchmark::State& state) {
+ static absl::BlockingCounter* counter =
+ new absl::BlockingCounter{std::numeric_limits<int>::max()};
+ for (auto _ : state) {
+ counter->DecrementCount();
+ }
+}
+BENCHMARK(BM_BlockingCounter_DecrementCount)
+ ->Threads(2)
+ ->Threads(4)
+ ->Threads(6)
+ ->Threads(8)
+ ->Threads(10)
+ ->Threads(12)
+ ->Threads(16)
+ ->Threads(32)
+ ->Threads(64)
+ ->Threads(128);
+
+void BM_BlockingCounter_Wait(benchmark::State& state) {
+ int num_threads = state.range(0);
+ absl::synchronization_internal::ThreadPool pool(num_threads);
+ for (auto _ : state) {
+ absl::BlockingCounter counter{num_threads};
+ pool.Schedule([num_threads, &counter, &pool]() {
+ for (int i = 0; i < num_threads; ++i) {
+ pool.Schedule([&counter]() { counter.DecrementCount(); });
+ }
+ });
+ counter.Wait();
+ }
+}
+BENCHMARK(BM_BlockingCounter_Wait)
+ ->ArgName("threads")
+ ->Arg(2)
+ ->Arg(4)
+ ->Arg(8)
+ ->Arg(16)
+ ->Arg(32)
+ ->Arg(64)
+ ->Arg(128);
+
+} // namespace