glib/gthread/testgthread.c

#include <stdlib.h>

#define main testglib_main
#include <testglib.c>
#undef main

#define TEST_PRIVATE_THREADS 9
#define TEST_PRIVATE_ROUNDS 5

void
test_mutexes ()
{
  GMutex *mutex = NULL;
  GCond *cond = NULL;
  GStaticMutex static_mutex = G_STATIC_MUTEX_INIT;
  G_LOCK_DEFINE (test_me);

  if (g_thread_supported)
    {
      mutex = g_mutex_new ();
      cond = g_cond_new ();
    }

  g_mutex_lock (mutex);
  g_mutex_unlock (mutex);

  g_static_mutex_lock (static_mutex);
  g_static_mutex_unlock (static_mutex);

  g_cond_signal (cond);
  g_cond_broadcast (cond);

  g_lock (test_me);
  g_unlock (test_me);

  if (g_thread_supported)
    {
      g_cond_free (cond);
      g_mutex_free (mutex);
    }
}

#if defined(NSPR)		/* we are using nspr threads */
/* this option must be specified by hand during compile of
   testgthread. also note, that you have to link with whatever library
   nspr is building upon, it might otherwise (as on solaris) lead to
   run time failure, as the mutex functions are defined in libc, but
   as noops, that will make some nspr assertions fail. */
#include <prthread.h>

gpointer
new_thread (GHookFunc func, gpointer data)
{
  PRThread *thread = PR_CreateThread (PR_SYSTEM_THREAD, func, data,
				      PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
				      PR_JOINABLE_THREAD, 0);
  return thread;
}
#define join_thread(thread) PR_JoinThread (thread)
#define self_thread() PR_GetCurrentThread ()

#elif defined(DEFAULTMUTEX)	/* we are using solaris threads */

gpointer
new_thread (GHookFunc func, gpointer data)
{
  thread_t thread;
  thr_create (NULL, 0, (void *(*)(void *)) func, data, THR_BOUND, &thread);
  return GUINT_TO_POINTER (thread);
}
#define join_thread(thread) \
  thr_join ((thread_t)GPOINTER_TO_UINT (thread), NULL, NULL)
#define self_thread()  GUINT_TO_POINTER (thr_self ())

#elif defined(PTHREAD_MUTEX_INITIALIZER) /* we are using posix threads */
gpointer
new_thread(GHookFunc func, gpointer data)
{
  pthread_t thread;
  pthread_attr_t pthread_attr;
  pthread_attr_init (&pthread_attr);
  pthread_attr_setdetachstate (&pthread_attr, PTHREAD_CREATE_JOINABLE);
  pthread_create (&thread, &pthread_attr, (void *(*)(void *)) func, data);
  return GUINT_TO_POINTER (thread);
}
#define join_thread(thread) \
  pthread_join ((pthread_t)GPOINTER_TO_UINT (thread), NULL)
#define self_thread() GUINT_TO_POINTER (pthread_self ())

#else /* we are not having a thread implementation, do nothing */

#define new_thread(func,data) (NULL)
#define join_thread(thread) ((void)0)
#define self_thread() NULL

#endif

#define G_MICROSEC 1000000

void
wait_thread (double seconds)
{
  GMutex *mutex;
  GCond *cond;
  GTimeVal current_time;

  g_get_current_time (&current_time);
  mutex = g_mutex_new ();
  cond = g_cond_new ();

  current_time.tv_sec += (guint) seconds;
  seconds -= (guint) seconds;
  current_time.tv_usec += (guint) (seconds * G_MICROSEC);
  while (current_time.tv_usec >= G_MICROSEC)
    {
      current_time.tv_usec -= G_MICROSEC;
      current_time.tv_sec++;
    }

  g_mutex_lock (mutex);
  g_cond_timed_wait (cond, mutex, &current_time);
  g_mutex_unlock (mutex);

  g_mutex_free (mutex);
  g_cond_free (cond);
}

gpointer
private_constructor ()
{
  gpointer *result = g_new (gpointer, 2);
  result[0] = 0;
  result[1] = self_thread ();
  g_print ("allocating data for the thread %p.\n", result[1]);
  return result;
}

void
private_destructor (gpointer data)
{
  gpointer *real = data;
  g_print ("freeing data for the thread %p.\n", real[1]);
  g_free (real);
}

GStaticPrivate private;

void
test_private_func (void *data)
{
  guint i = 0;
  wait_thread (1);
  while (i < TEST_PRIVATE_ROUNDS)
    {
      guint random_value = rand () % 10000;
      guint *data = g_static_private_get (&private);
      if (!data)
	{
	  data = private_constructor ();
	  g_static_private_set (&private, data, private_destructor);
	}
      *data = random_value;
      wait_thread (.2);
      g_assert (*(guint *) g_static_private_get (&private) == random_value);
      i++;
    }
}

void
test_private ()
{
  int i;
  gpointer threads[TEST_PRIVATE_THREADS];
  for (i = 0; i < TEST_PRIVATE_THREADS; i++)
    {
      threads[i] = new_thread (test_private_func, (gpointer) i);
    }
  for (i = 0; i < TEST_PRIVATE_THREADS; i++)
    {
      join_thread (threads[i]);
    }
  g_print ("\n");
}

int
main ()
{
  test_mutexes ();

  g_thread_init (NULL);

  test_mutexes ();

  test_private ();

  /* later we might want to start n copies of that */
  testglib_main (0, NULL);

  return 0;
}