gdb/testsuite/gdb.threads/pthreads.c

   1 /* Pthreads test program.
   2    Copyright 1996-2024 Free Software Foundation, Inc.
   3
   4    Written by Fred Fish of Cygnus Support
   5    Contributed by Cygnus Support
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <pthread.h>
  25 #include <unistd.h>
  26 #include <string.h>
  27 #include <errno.h>
  28
  29 static int verbose = 0;
  30
  31 static void
  32 common_routine (int arg)
  33 {
  34   static int from_thread1;
  35   static int from_thread2;
  36   static int from_main;
  37   static int hits;
  38   static int full_coverage;
  39
  40   if (verbose)
  41     printf ("common_routine (%d)\n", arg);
  42   hits++;
  43   switch (arg)
  44     {
  45     case 0:
  46       from_main++;
  47       break;
  48     case 1:
  49       from_thread1++;
  50       break;
  51     case 2:
  52       from_thread2++;
  53       break;
  54     }
  55   if (from_main && from_thread1 && from_thread2)
  56     full_coverage = 1;
  57 }
  58
  59 static void *
  60 thread1 (void *arg)
  61 {
  62   int i;
  63   int z = 0;
  64
  65   if (verbose)
  66     printf ("thread1 (%0lx) ; pid = %d\n", (long) arg, getpid ());
  67   for (i = 1; i <= 10000000; i++)
  68     {
  69       if (verbose)
  70         printf ("thread1 %ld\n", (long) pthread_self ());
  71       z += i;
  72       common_routine (1);
  73       sleep (1);
  74     }
  75   return (void *) 0;
  76 }
  77
  78 static void *
  79 thread2 (void * arg)
  80 {
  81   int i;
  82   int k = 0;
  83
  84   if (verbose)
  85     printf ("thread2 (%0lx) ; pid = %d\n", (long) arg, getpid ());
  86   for (i = 1; i <= 10000000; i++)
  87     {
  88       if (verbose)
  89         printf ("thread2 %ld\n", (long) pthread_self ());
  90       k += i;
  91       common_routine (2);
  92       sleep (1);
  93     }
  94   sleep (100);
  95   return (void *) 0;
  96 }
  97
  98 void
  99 foo (int a, int b, int c)
 100 {
 101   int d, e, f;
 102
 103   if (verbose)
 104     printf ("a=%d\n", a);
 105 }
 106
 107 /* Similar to perror, but use ERR instead of errno.  */
 108
 109 static void
 110 print_error (const char *ctx, int err)
 111 {
 112   fprintf (stderr, "%s: %s (%d)\n", ctx, strerror (err), err);
 113 }
 114
 115 int
 116 main (int argc, char **argv)
 117 {
 118   pthread_t tid1, tid2;
 119   int j;
 120   int t = 0;
 121   void (*xxx) ();
 122   pthread_attr_t attr;
 123   int res;
 124
 125   if (verbose)
 126     printf ("pid = %d\n", getpid ());
 127
 128   foo (1, 2, 3);
 129
 130   res = pthread_attr_init (&attr);
 131   if (res != 0)
 132     {
 133       print_error ("pthread_attr_init 1", res);
 134       exit (1);
 135     }
 136
 137 #ifdef PTHREAD_SCOPE_SYSTEM
 138   res = pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM);
 139   if (res != 0 && res != ENOTSUP)
 140     {
 141       print_error ("pthread_attr_setscope 1", res);
 142       exit (1);
 143     }
 144 #endif
 145
 146   res = pthread_create (&tid1, &attr, thread1, (void *) 0xfeedface);
 147   if (res != 0)
 148     {
 149       print_error ("pthread_create 1", res);
 150       exit (1);
 151     }
 152   if (verbose)
 153     printf ("Made thread %ld\n", (long) tid1);
 154   sleep (1);
 155
 156   res = pthread_create (&tid2, NULL, thread2, (void *) 0xdeadbeef);
 157   if (res != 0)
 158     {
 159       print_error ("pthread_create 2", res);
 160       exit (1);
 161     }
 162   if (verbose)
 163     printf ("Made thread %ld\n", (long) tid2);
 164
 165   sleep (1);
 166
 167   for (j = 1; j <= 10000000; j++)
 168     {
 169       if (verbose)
 170         printf ("top %ld\n", (long) pthread_self ());
 171       common_routine (0);
 172       sleep (1);
 173       t += j;
 174     }
 175
 176   exit (0);
 177 }