mmap.c File Reference

Compare les performances d'une copie avec et sans mmap More...

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "benchmark.h"
#include "copy.h"

Macros
#define	FILE_SIZE   0x1000000
#define	MAX_SIZE   0x1000000
#define	IN   "tmpin.dat"
#define	OUT   "tmpout.dat"

Functions
int	main (int argc, char *argv[])

Detailed Description

Compare les performances d'une copie avec et sans mmap

Macro Definition Documentation

#define FILE_SIZE   0x1000000

#define IN   "tmpin.dat"

#define MAX_SIZE   0x1000000

#define OUT   "tmpout.dat"

Function Documentation

int main	(	int	argc,
		char *	argv[]
	)

                                  {
  int err;

  timer *t = timer_alloc();
  recorder *rw_rec = recorder_alloc("rw.csv");
  recorder *mmap_rec = recorder_alloc("mmap.csv");

  size_t len = 0;
  int page_size = getpagesize();

  for (len = 0x40; len <= MAX_SIZE; len *= 2) {
    read_write(t, rw_rec, IN, OUT, FILE_SIZE, len, 0);
  }

  for (len = page_size; len <= MAX_SIZE; len *= 2) {
    mmap_munmap(t, mmap_rec, IN, OUT, FILE_SIZE, len);
  }

  recorder_free(rw_rec);
  recorder_free(mmap_rec);

  return EXIT_SUCCESS;
}