gdb/testsuite/gdb.threads/pthreads.c

/* Pthreads test program.
   Copyright 1996-2020 Free Software Foundation, Inc.

   Written by Fred Fish of Cygnus Support
   Contributed by Cygnus Support

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>

static int verbose = 0;

static void
common_routine (arg)
     int arg;
{
  static int from_thread1;
  static int from_thread2;
  static int from_main;
  static int hits;
  static int full_coverage;

  if (verbose) printf("common_routine (%d)\n", arg);
  hits++;
  switch (arg)
    {
    case 0:
      from_main++;
      break;
    case 1:
      from_thread1++;
      break;
    case 2:
      from_thread2++;
      break;
    }
  if (from_main && from_thread1 && from_thread2)
    full_coverage = 1;
}

static void *
thread1 (void *arg)
{
  int i;
  int z = 0;

  if (verbose) printf ("thread1 (%0lx) ; pid = %d\n", (long) arg, getpid ());
  for (i=1; i <= 10000000; i++)
    {
      if (verbose) printf("thread1 %ld\n", (long) pthread_self ());
      z += i;
      common_routine (1);
      sleep(1);
    }
  return (void *) 0;
}

static void *
thread2 (void * arg)
{
  int i;
  int k = 0;

  if (verbose) printf ("thread2 (%0lx) ; pid = %d\n", (long) arg, getpid ());
  for (i=1; i <= 10000000; i++)
    {
      if (verbose) printf("thread2 %ld\n", (long) pthread_self ());
      k += i;
      common_routine (2);
      sleep(1);
    }
  sleep(100);
  return (void *) 0;
}

void
foo (a, b, c)
     int a, b, c;
{
  int d, e, f;

  if (verbose) printf("a=%d\n", a);
}

int
main(argc, argv)
     int argc;
     char **argv;
{
  pthread_t tid1, tid2;
  int j;
  int t = 0;
  void (*xxx) ();
  pthread_attr_t attr;

  if (verbose) printf ("pid = %d\n", getpid());

  foo (1, 2, 3);

  if (pthread_attr_init (&attr))
    {
      perror ("pthread_attr_init 1");
      exit (1);
    }

#ifdef PTHREAD_SCOPE_SYSTEM
  if (pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM))
    {
      perror ("pthread_attr_setscope 1");
      exit (1);
    }
#endif

  if (pthread_create (&tid1, &attr, thread1, (void *) 0xfeedface))
    {
      perror ("pthread_create 1");
      exit (1);
    }
  if (verbose) printf ("Made thread %ld\n", (long) tid1);
  sleep (1);

  if (pthread_create (&tid2, NULL, thread2, (void *) 0xdeadbeef))
    {
      perror ("pthread_create 2");
      exit (1);
    }
  if (verbose) printf("Made thread %ld\n", (long) tid2);

  sleep (1);

  for (j = 1; j <= 10000000; j++)
    {
      if (verbose) printf("top %ld\n", (long) pthread_self ());
      common_routine (0);
      sleep(1);
      t += j;
    }
  
  exit(0);
}