pthreads.c   [plain text]

#include <stdio.h>

#include "config.h"

#ifndef HAVE_PTHREAD_H

/* Don't even try to compile.  In fact, cause a syntax error that we can
   look for as a compiler error message and know that we have no pthread
   support.  In that case we can just suppress the test completely. */

#error "no posix threads support"

#else

/* OK.  We have the right header.  If we try to compile this and fail, then
   there is something wrong and the user should know about it so the testsuite
   should issue an ERROR result.. */

#ifdef __linux__
#define  _MIT_POSIX_THREADS 1	/* Linux (or at least RedHat 4.0) needs this */
#endif

#include <pthread.h>

/* Under OSF 2.0 & 3.0 and HPUX 10, the second arg of pthread_create
   is prototyped to be just a "pthread_attr_t", while under Solaris it
   is a "pthread_attr_t *".  Arg! */

#if defined (__osf__) || defined (__hpux__)
#define PTHREAD_CREATE_ARG2(arg) arg
#define PTHREAD_CREATE_NULL_ARG2 null_attr
static pthread_attr_t null_attr;
#else
#define PTHREAD_CREATE_ARG2(arg) &arg
#define PTHREAD_CREATE_NULL_ARG2 NULL
#endif

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

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

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

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

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

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);

#ifndef __osf__
  if (pthread_attr_init (&attr))
    {
      perror ("pthread_attr_init 1");
      exit (1);
    }
#endif

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

  if (pthread_create (&tid1, PTHREAD_CREATE_ARG2(attr), thread1, (void *) 0xfeedface))
    {
      perror ("pthread_create 1");
      exit (1);
    }
  if (verbose) printf ("Made thread %d\n", tid1);
  sleep (1);

  if (pthread_create (&tid2, PTHREAD_CREATE_NULL_ARG2, thread2, (void *) 0xdeadbeef))
    {
      perror ("pthread_create 2");
      exit (1);
    }
  if (verbose) printf("Made thread %d\n", tid2);

  sleep (1);

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

#endif	/* ifndef HAVE_PTHREAD_H */