mech_seek.c

来自「disksim是一个非常优秀的磁盘仿真工具」· C语言 代码 · 共 69 行

/* diskmodel (version 1.1)
 * Authors: John Bucy, Greg Ganger
 * Contributors: John Griffin, Jiri Schindler, Steve Schlosser
 *
 * Copyright (c) of Carnegie Mellon University, 2003-2005
 *
 * This software is being provided by the copyright holders under the
 * following license. By obtaining, using and/or copying this
 * software, you agree that you have read, understood, and will comply
 * with the following terms and conditions:
 *
 * Permission to reproduce, use, and prepare derivative works of this
 * software is granted provided the copyright and "No Warranty"
 * statements are included with all reproductions and derivative works
 * and associated documentation. This software may also be
 * redistributed without charge provided that the copyright and "No
 * Warranty" statements are included in all redistributions.
 *
 * NO WARRANTY. THIS SOFTWARE IS FURNISHED ON AN "AS IS" BASIS.
 * CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY KIND, EITHER
 * EXPRESSED OR IMPLIED AS TO THE MATTER INCLUDING, BUT NOT LIMITED
 * TO: WARRANTY OF FITNESS FOR PURPOSE OR MERCHANTABILITY, EXCLUSIVITY
 * OF RESULTS OR RESULTS OBTAINED FROM USE OF THIS SOFTWARE. CARNEGIE
 * MELLON UNIVERSITY DOES NOT MAKE ANY WARRANTY OF ANY KIND WITH
 * RESPECT TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT
 * INFRINGEMENT.  COPYRIGHT HOLDERS WILL BEAR NO LIABILITY FOR ANY USE
 * OF THIS SOFTWARE OR DOCUMENTATION.  
 */

#include "test.h"

void testsUsage(void) {
  fprintf(stderr, "usage: layout_simple <model>\n");
}


int 
mech_test_seek(struct dm_disk_if *d) {
  int i, lbn, count = 0, runlbn = 0;
  struct dm_pbn pbn, trkpbn = {0,0,0};
  int bad = 0;

  for(i = 0; i < d->dm_cyls; i++) {
    struct dm_mech_state start = {.cyl = 0 };
    struct dm_mech_state end;
    dm_time_t st;

    end.cyl = i;

    startClock(0);
    st = d->mech->dm_seek_time(d, &start, &end, 0);
    stopClock(0);

    printf("%d -> %f\n", i, dm_time_itod(st));

  }


  return bad;
}

int minargs = 0;

int doTests(struct dm_disk_if *d, int argc, char **argv)
{
  addBucket("dm_seek_time()");
  return mech_test_seek(d);
}