ACE/performance-tests/Synch-Benchmarks/context.c

   1 /* FUZZ: disable check_for_improper_main_declaration */
   2
   3 #include <stdio.h>
   4 // @(#)context.c 1.1 10/18/96
   5
   6 #include <stdlib.h>
   7 #include <thread.h>
   8
   9 #define NSLEEP 100
  10 #define TMAX 2
  11 int count[TMAX];
  12
  13 void *
  14 work (void *n)
  15 {
  16   int ni = (int) n;
  17
  18   while (1)
  19     {
  20       thr_yield ();
  21       count[ni]++;
  22     }
  23   return 0;
  24 }
  25
  26 main (int argc, char *argv[])
  27 {
  28   int ncorr, t1arg, t0arg, orig_ncorr;
  29   thread_t tid1, tid0;
  30   float rate;
  31
  32   if (argc != 6)
  33     {
  34       printf ("usage: %s t0_bound t0_new_lwp t1_bound t1_new_lwp ncorr\n", argv[0]);
  35       exit (1);
  36     }
  37   t0arg = THR_DETACHED;
  38   if (atoi (argv[1]))
  39     t0arg |= THR_BOUND;
  40   if (atoi (argv[2]))
  41     t0arg |= THR_NEW_LWP;
  42
  43   t1arg = THR_DETACHED;
  44   if (atoi (argv[3]))
  45     t1arg |= THR_BOUND;
  46   if (atoi (argv[4]))
  47     t1arg |= THR_NEW_LWP;
  48
  49   ncorr = atoi (argv[5]);
  50
  51   if (thr_create (0, 0, work, 0, t0arg, &tid0) != 0)
  52     perror ("couldn't create thread 0");
  53   if (thr_create (0, 0, work, (void *) 1, t1arg, &tid1) != 0)
  54     perror ("couldn't create thread 1");
  55
  56   orig_ncorr = thr_getconcurrency ();
  57   if (ncorr)
  58     thr_setconcurrency (ncorr);
  59   sleep (NSLEEP);
  60   rate = (count[0] + count[1]) / ((float) NSLEEP);
  61     printf ("\n------------------------------------------------------------------------\n");
  62   printf ("t0arg 0x%x (%s, %s, %s)\nt1arg 0x%x (%s, %s, %s)\ncount[0] %d count[1] %d\n\
  63            ncorr_orig %d ncorr_set %d ncorr_end %d rate %.3f per_cxt %.2f usec\n",
  64           t0arg,
  65           (t0arg & THR_DETACHED) ? "THR_DETACHED" : "Not Detached",
  66           (t0arg & THR_BOUND) ? "THR_BOUND" : "Not Bound",
  67           (t0arg & THR_NEW_LWP) ? "THR_NEW_LWP" : "No New_LWP",
  68           t1arg,
  69           (t1arg & THR_DETACHED) ? "THR_DETACHED" : "Not Detached",
  70           (t1arg & THR_BOUND) ? "THR_BOUND" : "Not Bound",
  71           (t1arg & THR_NEW_LWP) ? "THR_NEW_LWP" : "No New_LWP",
  72           count[0], count[1],
  73           orig_ncorr, ncorr, thr_getconcurrency (), rate, 1.0e6 / rate);
  74 }