1 //
2 //
3 // Copyright 2017 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 // http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 //
18
19 // Benchmark arenas
20
21 #include <benchmark/benchmark.h>
22
23 #include "absl/random/random.h"
24 #include "src/core/util/sync.h"
25
BM_OneRngFromFreshBitSet(benchmark::State & state)26 static void BM_OneRngFromFreshBitSet(benchmark::State& state) {
27 for (auto _ : state) {
28 benchmark::DoNotOptimize(absl::Uniform(absl::BitGen(), 0.0, 1.0));
29 }
30 }
31 BENCHMARK(BM_OneRngFromFreshBitSet);
32
BM_OneRngFromReusedBitSet(benchmark::State & state)33 static void BM_OneRngFromReusedBitSet(benchmark::State& state) {
34 absl::BitGen bitgen;
35 for (auto _ : state) {
36 benchmark::DoNotOptimize(absl::Uniform(bitgen, 0.0, 1.0));
37 }
38 }
39 BENCHMARK(BM_OneRngFromReusedBitSet);
40
BM_OneRngFromReusedBitSetWithMutex(benchmark::State & state)41 static void BM_OneRngFromReusedBitSetWithMutex(benchmark::State& state) {
42 struct Data {
43 grpc_core::Mutex mu;
44 absl::BitGen bitgen ABSL_GUARDED_BY(mu);
45 };
46 Data data;
47 for (auto _ : state) {
48 grpc_core::MutexLock lock(&data.mu);
49 benchmark::DoNotOptimize(absl::Uniform(data.bitgen, 0.0, 1.0));
50 }
51 }
52 BENCHMARK(BM_OneRngFromReusedBitSetWithMutex);
53
54 // Some distros have RunSpecifiedBenchmarks under the benchmark namespace,
55 // and others do not. This allows us to support both modes.
56 namespace benchmark {
RunTheBenchmarksNamespaced()57 void RunTheBenchmarksNamespaced() { RunSpecifiedBenchmarks(); }
58 } // namespace benchmark
59
main(int argc,char ** argv)60 int main(int argc, char** argv) {
61 ::benchmark::Initialize(&argc, argv);
62 benchmark::RunTheBenchmarksNamespaced();
63 return 0;
64 }
65