google_benchmark.cpp

#include <DynamicInterface.hpp>
#include <CRTPInterface.hpp>
#include <benchmark/benchmark.h>
#include <memory>

unsigned long N = 10000;
auto dynobj = std::make_unique<DynamicImplementation>();
auto crtpobj = std::make_unique<CRTPImplementation>();

void run_dynamic(DynamicInterface* obj) {
	for (unsigned long i = 0; i < N; ++i) {
	  for (unsigned long j = 0; j < i; ++j) {
		  obj->tick(j);
	  }
	}
}

template <typename Implementation>
void run_crtp(CRTPInterface<Implementation>* obj) {
	for (unsigned long i = 0; i < N; ++i) {
		for (unsigned long j = 0; j < i; ++j) {
			obj->tick(j);
		}
	}
}

static void BM_DynamicInterface(benchmark::State& state)
{
	while (state.KeepRunning())
	{
		run_dynamic(dynobj.get());
	}
}

BENCHMARK(BM_DynamicInterface);

static void BM_CRTPInterface(benchmark::State& state)
{
	while (state.KeepRunning())
	{
		run_crtp(crtpobj.get());
	}
}

BENCHMARK(BM_CRTPInterface);

BENCHMARK_MAIN();

output.log

[lambday@lambday.iitb.ac.in benchmark]$ g++ -O3 -std=c++14 benchmark_google.cpp -lbenchmark -lpthread -I.
[lambday@lambday.iitb.ac.in benchmark]$ ./a.out
Run on (4 X 1235.3 MHz CPU s)
2016-04-01 21:17:06
***WARNING*** CPU scaling is enabled, the benchmark real time measurements may be noisy and will incur extra overhead.
Benchmark             Time(ns)    CPU(ns) Iterations
----------------------------------------------------
BM_DynamicInterface  106829282  106696857          7                                 
BM_CRTPInterface      12057762   12054103         58