/* Last edited on 2008-02-16 11:21:59 by stolfi */
#include <stdio.h>
#include <jstime.h>
#include <stdint.h>
#include <stdlib.h>
#include <strings.h>

#define TYPE uint64_t

void test(size_t sz, TYPE *x, TYPE *y);

void test(size_t sz, TYPE *x, TYPE *y)
{
  int m = 10000; /* Repeat count. */
  int j;
  
  double start = user_cpu_time_usec();
  for (j = 0; j < m; j++)
    { bcopy((void*)x, (void*)y, sz); }
  double toto = user_cpu_time_usec() - start;

  double ctop = ((double)m)*((double)sz);     /* Total number of bytes copied. */
  double tcpb = toto/ctop;                    /* Time per byte (us) */
  double vmem = 1.0/tcpb;               /* Bytes per second. */
  
  fprintf(stderr, "toto = %16.12f sec\n", 1e6*toto);
  fprintf(stderr, "tcpb = %16.3f usec/byte\n", tcpb);
  fprintf(stderr, "vmem = %16.1f Mbytes/sec\n", vmem);
}

int main(int argc, char **argv)
{
  size_t sz = 1024*1024;
  TYPE *x = malloc(sz);
  TYPE *y = malloc(sz);
  printf("start\n");
  test(sz, x, y);
  printf("stop\n");
  return 0;
}