/**
 * Copyright (c) 2014-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

#ifndef __CSS_BENCHMARK_H
#define __CSS_BENCHMARK_H

#include <time.h>
#include <stdlib.h>
#include <stdio.h>

#define NUM_REPETITIONS 100000

#define CSS_BENCHMARKS(BLOCK) \
int main(int argc, char const *argv[]) { \
  clock_t __start; \
  clock_t __end; \
  { \
    BLOCK \
  } \
  return 0; \
}

#define CSS_BENCHMARK(NAME, BLOCK) \
__start = clock(); \
for (int __i = 0; __i < NUM_REPETITIONS; __i++) { BLOCK } \
__end = clock(); \
__printBenchmarkResult(NAME, __start, __end);

void __printBenchmarkResult(char *name, clock_t start, clock_t end) {
  float total = (end - start) / (double) CLOCKS_PER_SEC * 1000;
  float mean = total / NUM_REPETITIONS;
  printf("%s: ", name);
  printf("%lf ms", mean);
  printf("\n");
}

#endif