/*
 * @author TPOC: contact@palisade-crypto.org
 *
 * @copyright Copyright (c) 2019, New Jersey Institute of Technology (NJIT)
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution. THIS SOFTWARE IS
 * PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#include "benchmark/benchmark.h"

#define BASIC_BENCHMARK_TEST(x) BENCHMARK(x)->Arg(8)->Arg(512)->Arg(8192)

void BM_empty(benchmark::State &state) {
  while (state.KeepRunning()) {
    benchmark::DoNotOptimize(state.iterations());
  }
}
BENCHMARK(BM_empty);
BENCHMARK(BM_empty)->ThreadPerCpu();

void BM_spin_empty(benchmark::State &state) {
  while (state.KeepRunning()) {
    for (int x = 0; x < state.range(0); ++x) {
      benchmark::DoNotOptimize(x);
    }
  }
}
BASIC_BENCHMARK_TEST(BM_spin_empty);
BASIC_BENCHMARK_TEST(BM_spin_empty)->ThreadPerCpu();

void BM_spin_pause_before(benchmark::State &state) {
  for (int i = 0; i < state.range(0); ++i) {
    benchmark::DoNotOptimize(i);
  }
  while (state.KeepRunning()) {
    for (int i = 0; i < state.range(0); ++i) {
      benchmark::DoNotOptimize(i);
    }
  }
}
BASIC_BENCHMARK_TEST(BM_spin_pause_before);
BASIC_BENCHMARK_TEST(BM_spin_pause_before)->ThreadPerCpu();

void BM_spin_pause_during(benchmark::State &state) {
  while (state.KeepRunning()) {
    state.PauseTiming();
    for (int i = 0; i < state.range(0); ++i) {
      benchmark::DoNotOptimize(i);
    }
    state.ResumeTiming();
    for (int i = 0; i < state.range(0); ++i) {
      benchmark::DoNotOptimize(i);
    }
  }
}
BASIC_BENCHMARK_TEST(BM_spin_pause_during);
BASIC_BENCHMARK_TEST(BM_spin_pause_during)->ThreadPerCpu();

void BM_pause_during(benchmark::State &state) {
  while (state.KeepRunning()) {
    state.PauseTiming();
    state.ResumeTiming();
  }
}
BENCHMARK(BM_pause_during);
BENCHMARK(BM_pause_during)->ThreadPerCpu();
BENCHMARK(BM_pause_during)->UseRealTime();
BENCHMARK(BM_pause_during)->UseRealTime()->ThreadPerCpu();

void BM_spin_pause_after(benchmark::State &state) {
  while (state.KeepRunning()) {
    for (int i = 0; i < state.range(0); ++i) {
      benchmark::DoNotOptimize(i);
    }
  }
  for (int i = 0; i < state.range(0); ++i) {
    benchmark::DoNotOptimize(i);
  }
}
BASIC_BENCHMARK_TEST(BM_spin_pause_after);
BASIC_BENCHMARK_TEST(BM_spin_pause_after)->ThreadPerCpu();

void BM_spin_pause_before_and_after(benchmark::State &state) {
  for (int i = 0; i < state.range(0); ++i) {
    benchmark::DoNotOptimize(i);
  }
  while (state.KeepRunning()) {
    for (int i = 0; i < state.range(0); ++i) {
      benchmark::DoNotOptimize(i);
    }
  }
  for (int i = 0; i < state.range(0); ++i) {
    benchmark::DoNotOptimize(i);
  }
}
BASIC_BENCHMARK_TEST(BM_spin_pause_before_and_after);
BASIC_BENCHMARK_TEST(BM_spin_pause_before_and_after)->ThreadPerCpu();

void BM_empty_stop_start(benchmark::State &state) {
  while (state.KeepRunning()) {
  }
}
BENCHMARK(BM_empty_stop_start);
BENCHMARK(BM_empty_stop_start)->ThreadPerCpu();

BENCHMARK_MAIN();