crypt/speeds.c

   1 /*
   2  * This fcrypt/crypt speed testing program
   3  * is derived from one floating around in
   4  * the net. It's distributed along with
   5  * UFC-crypt but is not covered by any
   6  * licence.
   7  *
   8  * @(#)speeds.c 1.11 20 Aug 1996
   9  */
  10
  11 #include <signal.h>
  12 #include <stdio.h>
  13
  14 #ifndef SIGVTALRM
  15 /*
  16  * patch from chip@chinacat.unicom.com (Chip Rosenthal):
  17  * you may enable it if your system does not include
  18  * a setitimer() function. You'll have to ensure the
  19  * existence an environment variable: HZ giving how many
  20  * ticks goes per second.
  21  * If not existing in your default environment 50, 60
  22  * or even 100 may be the right value. Perhaps you should
  23  * then use 'time ./ufc 10000' instead of guessing.
  24  */
  25 #define NO_ITIMER
  26 #endif
  27
  28 #ifdef NO_ITIMER
  29 #include <sys/types.h>
  30 #include <sys/times.h>
  31 #else
  32 #include <sys/time.h>
  33 #endif
  34
  35 static int cnt;
  36 #ifdef NO_ITIMER
  37 char *hz;
  38 struct tms tstart, tfinish;
  39 #endif
  40 #define ITIME   10              /* Number of seconds to run test. */
  41
  42 char *crypt(), *fcrypt();
  43
  44 void
  45 Stop (void)
  46 {
  47     double elapsed;
  48 #ifdef NO_ITIMER
  49     (void) times(&tfinish);
  50     elapsed = ((tfinish.tms_utime + tfinish.tms_stime) -
  51         (tstart.tms_utime + tstart.tms_stime)) / atoi(hz);
  52     printf("elapsed time = %d sec,  CPU time = %f sec\n", ITIME, elapsed);
  53 #else
  54     elapsed = ITIME;
  55 #endif
  56     printf ("Did %f %s()s per second.\n", ((float) cnt) / elapsed,
  57 #if defined(FCRYPT)
  58             "fcrypt"
  59 #else
  60             "crypt"
  61 #endif
  62     );
  63     exit (0);
  64 }
  65
  66 /*
  67  * Silly rewrite of 'bzero'. I do so
  68  * because some machines don't have
  69  * bzero and some don't have memset.
  70  */
  71
  72 static void clearmem(start, cnt)
  73   char *start;
  74   int cnt;
  75   { while(cnt--)
  76       *start++ = '\0';
  77   }
  78
  79 main (void)
  80 {
  81    char *s;
  82 #ifdef NO_ITIMER
  83     extern char *getenv();
  84 #else
  85     struct itimerval itv;
  86 #endif
  87
  88 #ifdef NO_ITIMER
  89     if ((hz = getenv("HZ")) == NULL) {
  90         fprintf(stderr, "HZ environment parameter undefined\n");
  91         exit(1);
  92     }
  93 #endif
  94
  95 #ifdef FCRYPT
  96     printf("\n");
  97     printf("Warning: this version of the speed program may run slower when\n");
  98     printf("benchmarking UFC-crypt than previous versions. This is because it\n");
  99     printf("stresses the CPU hardware cache in order to get benchmark figures\n");
 100     printf("that corresponds closer to the performance that can be expected in\n");
 101     printf("a password cracker.\n\n");
 102 #endif
 103
 104     printf ("Running %s for %d seconds of virtual time ...\n",
 105 #ifdef FCRYPT
 106     "UFC-crypt",
 107 #else
 108     "crypt(libc)",
 109 #endif
 110             ITIME);
 111
 112 #ifdef FCRYPT
 113     init_des ();
 114 #endif
 115
 116 #ifdef NO_ITIMER
 117     signal(SIGALRM, Stop);
 118     switch (fork()) {
 119     case -1:
 120         perror("fork failed");
 121         exit(1);
 122     case 0:
 123         sleep(10);
 124         kill(getppid(), SIGALRM);
 125         exit(0);
 126     default:
 127         (void) times(&tstart);
 128     }
 129 #else
 130     clearmem ((char*)&itv, (int)sizeof (itv));
 131     signal (SIGVTALRM, Stop);
 132     itv.it_value.tv_sec = ITIME;
 133     itv.it_value.tv_usec = 0;
 134     setitimer (ITIMER_VIRTUAL, &itv, NULL);
 135 #endif
 136
 137
 138     s = "fredred";
 139     for (cnt = 0;; cnt++)
 140     {
 141 #ifdef FCRYPT
 142         s = fcrypt (s, "eek");
 143 #else
 144         s = crypt (s, "eek");
 145 #endif
 146     }
 147 }
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