[English] METRIC_START

METRIC_START();
METRIC_STOP(name);

The macro METRIC_START start a new block of code to measure the performance. The METRIC_STOP mark the end of the block matching with the METRIC_START, and print the information about the measurement. The name should be a literal string, and it is displayed like an identification to the block.

You can make nested blocks of measurement.

Example

#include <stdio.h>
#include "metric.h"

int main(void)
{
  volatile int x = 12345;

  METRIC_START();

  for (int i = 0; i < 999999; i++)
    x ^= i;

  METRIC_STOP("xor_x_variable");
  printf("-- %d\n", x);

  return 0;
}

Output:

<BENCH> tst.c: xor_x_variable
        5907 clocks, 0.00590500 secs
-- 1012230