update ceph source to reef 18.1.2

[ceph.git] / ceph / src / jaegertracing / opentelemetry-cpp / sdk / test / common / random_benchmark.cc

diff --git a/ceph/src/jaegertracing/opentelemetry-cpp/sdk/test/common/random_benchmark.cc b/ceph/src/jaegertracing/opentelemetry-cpp/sdk/test/common/random_benchmark.cc
new file mode 100644 (file)
index 0000000..df2ebf9
--- /dev/null
+++ b/ceph/src/jaegertracing/opentelemetry-cpp/sdk/test/common/random_benchmark.cc
@@ -0,0 +1,35 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#include "src/common/random.h"
+
+#include <cstdint>
+#include <random>
+
+#include <benchmark/benchmark.h>
+
+namespace
+{
+using opentelemetry::sdk::common::Random;
+
+void BM_RandomIdGeneration(benchmark::State &state)
+{
+  while (state.KeepRunning())
+  {
+    benchmark::DoNotOptimize(Random::GenerateRandom64());
+  }
+}
+BENCHMARK(BM_RandomIdGeneration);
+
+void BM_RandomIdStdGeneration(benchmark::State &state)
+{
+  std::mt19937_64 generator{0};
+  while (state.KeepRunning())
+  {
+    benchmark::DoNotOptimize(generator());
+  }
+}
+BENCHMARK(BM_RandomIdStdGeneration);
+
+}  // namespace
+BENCHMARK_MAIN();