gdb/testsuite/gdb.threads/pthreads.c

   1 /* Pthreads test program.
   2    Copyright 1996-2021 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
  27 static int verbose = 0;
  28
  29 static void
  30 common_routine (arg)
  31      int arg;
  32 {
  33   static int from_thread1;
  34   static int from_thread2;
  35   static int from_main;
  36   static int hits;
  37   static int full_coverage;
  38
  39   if (verbose) printf("common_routine (%d)\n", arg);
  40   hits++;
  41   switch (arg)
  42     {
  43     case 0:
  44       from_main++;
  45       break;
  46     case 1:
  47       from_thread1++;
  48       break;
  49     case 2:
  50       from_thread2++;
  51       break;
  52     }
  53   if (from_main && from_thread1 && from_thread2)
  54     full_coverage = 1;
  55 }
  56
  57 static void *
  58 thread1 (void *arg)
  59 {
  60   int i;
  61   int z = 0;
  62
  63   if (verbose) printf ("thread1 (%0lx) ; pid = %d\n", (long) arg, getpid ());
  64   for (i=1; i <= 10000000; i++)
  65     {
  66       if (verbose) printf("thread1 %ld\n", (long) pthread_self ());
  67       z += i;
  68       common_routine (1);
  69       sleep(1);
  70     }
  71   return (void *) 0;
  72 }
  73
  74 static void *
  75 thread2 (void * arg)
  76 {
  77   int i;
  78   int k = 0;
  79
  80   if (verbose) printf ("thread2 (%0lx) ; pid = %d\n", (long) arg, getpid ());
  81   for (i=1; i <= 10000000; i++)
  82     {
  83       if (verbose) printf("thread2 %ld\n", (long) pthread_self ());
  84       k += i;
  85       common_routine (2);
  86       sleep(1);
  87     }
  88   sleep(100);
  89   return (void *) 0;
  90 }
  91
  92 void
  93 foo (a, b, c)
  94      int a, b, c;
  95 {
  96   int d, e, f;
  97
  98   if (verbose) printf("a=%d\n", a);
  99 }
 100
 101 int
 102 main(argc, argv)
 103      int argc;
 104      char **argv;
 105 {
 106   pthread_t tid1, tid2;
 107   int j;
 108   int t = 0;
 109   void (*xxx) ();
 110   pthread_attr_t attr;
 111
 112   if (verbose) printf ("pid = %d\n", getpid());
 113
 114   foo (1, 2, 3);
 115
 116   if (pthread_attr_init (&attr))
 117     {
 118       perror ("pthread_attr_init 1");
 119       exit (1);
 120     }
 121
 122 #ifdef PTHREAD_SCOPE_SYSTEM
 123   if (pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM))
 124     {
 125       perror ("pthread_attr_setscope 1");
 126       exit (1);
 127     }
 128 #endif
 129
 130   if (pthread_create (&tid1, &attr, thread1, (void *) 0xfeedface))
 131     {
 132       perror ("pthread_create 1");
 133       exit (1);
 134     }
 135   if (verbose) printf ("Made thread %ld\n", (long) tid1);
 136   sleep (1);
 137
 138   if (pthread_create (&tid2, NULL, thread2, (void *) 0xdeadbeef))
 139     {
 140       perror ("pthread_create 2");
 141       exit (1);
 142     }
 143   if (verbose) printf("Made thread %ld\n", (long) tid2);
 144
 145   sleep (1);
 146
 147   for (j = 1; j <= 10000000; j++)
 148     {
 149       if (verbose) printf("top %ld\n", (long) pthread_self ());
 150       common_routine (0);
 151       sleep(1);
 152       t += j;
 153     }
 154
 155   exit(0);
 156 }
 157