Category : Files from Magazines
Archive   : PJ61.ZIP
Filename : LISTING4.C

 
Output of file : LISTING4.C contained in archive : PJ61.ZIP
/*
* timer ----- Gives a rough execution time of a particular process
*
* Uses:
*
* timer.c - Picks off cmd line and assembles it for spawnvp()
* gettime.c - Pulls clock ticks from MS-DOS
*
* Copyright by Frank D. Greco, 1987
* Page 50, Volume 6.1 Programmer's Journal
*/

#include
#include
#include
#include
#include "timer.h"

#define NO_ERR 0 /* No error to return to the shell */
#define NO_ARGS 1 /* If nothing to time, return this value */

extern int errno;

main(argc,argv)
char **argv;
{
char *bp; /* Ptr to command to be spawned */
unsigned long gettime(); /* Gets clock ticks from MS-DOS */
int ret; /* To save the return value of spawn() */

if (argc == 1) /* If nothing to time, bye-bye */
exit(NO_ARGS);

bp = argv[1]; /* We need to avoid problems with side effects,
* so use another ptr to the command to be spawned.
*/
/*
* Now time the requested command
*/
TIME(ret = spawnvp(P_WAIT, bp, ++argv), bp);

if ( ret == -1 ) /* In case of an error with spawn */
switch (errno)
{
case ENOENT: fprintf(stderr, "File '%s' not found\n", bp);
exit(1);

case ENOMEM: fprintf(stderr, "%s to run '%s'\n",
"Not enough memory", bp);
exit(2);
/*
* Spawn() does not appear to recognize invalid executables properly,
* so it appears that the following error (i.e., ENOEXEC) will
* unfortunately never be caught.
*/
case ENOEXEC: fprintf(stderr, "Cannot execute '%s'\n", bp);
exit(3);

default: fprintf(stderr, "Cannot spawn '%s'\n", bp);
exit(4);
}
exit(NO_ERR); /* Good Housekeeping */
}


  3 Responses to “Category : Files from Magazines
Archive   : PJ61.ZIP
Filename : LISTING4.C
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/