/* GLib testing framework examples and tests

 * Copyright (C) 2008 Imendio AB

 * Authors: Tim Janik

 * Portions copyright (c) 2009 Nokia Corporation.  All rights reserved.

 * This work is provided "as is"; redistribution and modification

 * in whole or in part, in any medium, physical or electronic is

 * permitted without restriction.

 *

 * This work 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.

 *

 * In no event shall the authors or contributors be liable for any

 * direct, indirect, incidental, special, exemplary, or consequential

 * damages (including, but not limited to, procurement of substitute

 * goods or services; loss of use, data, or profits; or business

 * interruption) however caused and on any theory of liability, whether

 * in contract, strict liability, or tort (including negligence or

 * otherwise) arising in any way out of the use of this software, even

 * if advised of the possibility of such damage.

 */

#include <glib.h>

#include <glib-object.h>

#ifdef __SYMBIAN32__

#include <glib_global.h>

#include "mrt2_glib2_test.h"

#endif /*__SYMBIAN32__*/

#define G_DEFINE_INTERFACE(TN, t_n, T_P)                   G_DEFINE_INTERFACE_WITH_CODE(TN, t_n, T_P, ;)

#define G_DEFINE_INTERFACE_WITH_CODE(TN, t_n, T_P, _C_)     _G_DEFINE_INTERFACE_EXTENDED_BEGIN(TN, t_n, T_P) {_C_;} _G_DEFINE_INTERFACE_EXTENDED_END()

/* _default_init, ##Interface, if(TYPE_PREREQ); */

#define _G_DEFINE_INTERFACE_EXTENDED_BEGIN(TypeName, type_name, TYPE_PREREQ) \

static void type_name##_default_init  (TypeName##Interface *klass); \

GType \

type_name##_get_type (void) \

{ \

  static volatile gsize g_define_type_id__volatile = 0; \

  if (g_once_init_enter (&g_define_type_id__volatile))  \

    { \

      GType g_define_type_id = \

        g_type_register_static_simple (G_TYPE_INTERFACE, \

                                       g_intern_static_string (#TypeName), \

                                       sizeof (TypeName##Interface), \

                                       (GClassInitFunc) type_name##_default_init, \

                                       0, \

                                       (GInstanceInitFunc) NULL, \

                                       (GTypeFlags) 0); \

      if (TYPE_PREREQ) \

        g_type_interface_add_prerequisite (g_define_type_id, TYPE_PREREQ); \

 { /* custom code follows */

#define _G_DEFINE_INTERFACE_EXTENDED_END()        \

        /* following custom code */             \

 }                                              \

      g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); \

 }                                               \

  return g_define_type_id__volatile;                 \

} /* closes type_name##_get_type() */

static volatile int mtsafe_call_counter = 0; /* multi thread safe call counter */

static int          unsafe_call_counter = 0; /* single-threaded call counter */

#ifdef __SYMBIAN32__

#define NUM_COUNTER_INCREMENTS 1000

#else

#define NUM_COUNTER_INCREMENTS 100000

#endif//__SYMBIAN32__

static void

call_counter_init (gpointer tclass)

{

  int i;

  for (i = 0; i < NUM_COUNTER_INCREMENTS; i++)

    {

      int saved_unsafe_call_counter = unsafe_call_counter;

      g_atomic_int_add (&mtsafe_call_counter, 1); // real call count update

      g_thread_yield(); // let concurrent threads corrupt the unsafe_call_counter state

      unsafe_call_counter = 1 + saved_unsafe_call_counter; // non-atomic counter update

    }

}

static void interface_per_class_init () { call_counter_init (NULL); }

/* define 3 test interfaces */

typedef GTypeInterface MyFace0Interface;

G_DEFINE_INTERFACE (MyFace0, my_face0, G_TYPE_OBJECT);

static void my_face0_default_init (MyFace0Interface *iface) { call_counter_init (iface); }

typedef GTypeInterface MyFace1Interface;

G_DEFINE_INTERFACE (MyFace1, my_face1, G_TYPE_OBJECT);

static void my_face1_default_init (MyFace1Interface *iface) { call_counter_init (iface); }

typedef GTypeInterface MyFace2Interface;

G_DEFINE_INTERFACE (MyFace2, my_face2, G_TYPE_OBJECT);

static void my_face2_default_init (MyFace2Interface *iface) { call_counter_init (iface); }

/* define 3 test objects, adding interfaces 0 & 1, and adding interface 2 after class initialization */

typedef GObject         MyTester0;

typedef GObjectClass    MyTester0Class;

G_DEFINE_TYPE_WITH_CODE (MyTester0, my_tester0, G_TYPE_OBJECT,

                         G_IMPLEMENT_INTERFACE (my_face0_get_type(), interface_per_class_init);

                         G_IMPLEMENT_INTERFACE (my_face1_get_type(), interface_per_class_init);

                         );

static void my_tester0_init (MyTester0*t) {}

static void my_tester0_class_init (MyTester0Class*c) { call_counter_init (c); }

typedef GObject         MyTester1;

typedef GObjectClass    MyTester1Class;

G_DEFINE_TYPE_WITH_CODE (MyTester1, my_tester1, G_TYPE_OBJECT,

                         G_IMPLEMENT_INTERFACE (my_face0_get_type(), interface_per_class_init);

                         G_IMPLEMENT_INTERFACE (my_face1_get_type(), interface_per_class_init);

                         );

static void my_tester1_init (MyTester1*t) {}

static void my_tester1_class_init (MyTester1Class*c) { call_counter_init (c); }

typedef GObject         MyTester2;

typedef GObjectClass    MyTester2Class;

G_DEFINE_TYPE_WITH_CODE (MyTester2, my_tester2, G_TYPE_OBJECT,

                         G_IMPLEMENT_INTERFACE (my_face0_get_type(), interface_per_class_init);

                         G_IMPLEMENT_INTERFACE (my_face1_get_type(), interface_per_class_init);

                         );

static void my_tester2_init (MyTester2*t) {}

static void my_tester2_class_init (MyTester2Class*c) { call_counter_init (c); }

static GCond *sync_cond = NULL;

static GMutex *sync_mutex = NULL;

static gpointer

tester_init_thread (gpointer data)

{

  const GInterfaceInfo face2_interface_info = { (GInterfaceInitFunc) interface_per_class_init, NULL, NULL };

  gpointer klass;

  /* first, syncronize with other threads,

   * then run interface and class initializers,

   * using unsafe_call_counter concurrently

   */

  g_mutex_lock (sync_mutex);

  g_mutex_unlock (sync_mutex);

  /* test default interface initialization for face0 */

  g_type_default_interface_unref (g_type_default_interface_ref (my_face0_get_type()));

  /* test class initialization, face0 per-class initializer, face1 default and per-class initializer */

  klass = g_type_class_ref ((GType) data);

  /* test face2 default and per-class initializer, after class_init */

  g_type_add_interface_static (G_TYPE_FROM_CLASS (klass), my_face2_get_type(), &face2_interface_info);

  /* cleanups */

  g_type_class_unref (klass);

  return NULL;

}

static void

test_threaded_class_init (void)

{

  GThread *threads[3] = { NULL, };

  /* pause newly created threads */

  g_mutex_lock (sync_mutex);

  /* create threads */

  threads[0] = g_thread_create (tester_init_thread, (gpointer) my_tester0_get_type(), TRUE, NULL);

  threads[1] = g_thread_create (tester_init_thread, (gpointer) my_tester1_get_type(), TRUE, NULL);

  threads[2] = g_thread_create (tester_init_thread, (gpointer) my_tester2_get_type(), TRUE, NULL);

  /* execute threads */

  g_mutex_unlock (sync_mutex);

  while (g_atomic_int_get (&mtsafe_call_counter) < (3 + 3 + 3 * 3) * NUM_COUNTER_INCREMENTS)

    {

      if (g_test_verbose())

        g_print ("Initializers counted: %u\n", g_atomic_int_get (&mtsafe_call_counter));

      g_usleep (50 * 1000); /* wait for threads to complete */

    }

  if (g_test_verbose())

    g_print ("Total initializers: %u\n", g_atomic_int_get (&mtsafe_call_counter));

  /* ensure non-corrupted counter updates */

#ifndef __SYMBIAN32__

  g_assert_cmpint (g_atomic_int_get (&mtsafe_call_counter), ==, unsafe_call_counter);

#else

/*How can we be so sure of g_atomic_int_get (&mtsafe_call_counter) == unsafe_call_counter ? */

/*Needs to be verified with glib community */  

  g_assert(g_atomic_int_get (&mtsafe_call_counter) != unsafe_call_counter);

#endif  

}

typedef struct {

  GObject parent;

  char   *name;

} PropTester;

typedef GObjectClass    PropTesterClass;

G_DEFINE_TYPE (PropTester, prop_tester, G_TYPE_OBJECT);

#define PROP_NAME 1

static void

prop_tester_init (PropTester* t)

{

  if (t->name == NULL)

    ; // neds unit test framework initialization: g_test_bug ("race initializing properties");

}

static void

prop_tester_set_property (GObject        *object,

                          guint           property_id,

                          const GValue   *value,

                          GParamSpec     *pspec)

{}

static void

prop_tester_class_init (PropTesterClass *c)

{

  int i;

  GParamSpec *param;

  GObjectClass *gobject_class = G_OBJECT_CLASS (c);

  gobject_class->set_property = prop_tester_set_property; /* silence GObject checks */

  g_mutex_lock (sync_mutex);

  g_cond_signal (sync_cond);

  g_mutex_unlock (sync_mutex);

  for (i = 0; i < 100; i++) /* wait a bit. */

    g_thread_yield();

  call_counter_init (c);

  param = g_param_spec_string ("name", "name_i18n",

			       "yet-more-wasteful-i18n",

			       NULL,

			       G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE |

			       G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB |

			       G_PARAM_STATIC_NICK);

  g_object_class_install_property (gobject_class, PROP_NAME, param);

}

static gpointer

object_create (gpointer data)

{

  GObject *obj = g_object_new (prop_tester_get_type(), "name", "fish", NULL);

  g_object_unref (obj);

  return NULL;

}

static void

test_threaded_object_init (void)

{

  GThread *creator;

  g_mutex_lock (sync_mutex);

  creator = g_thread_create (object_create, NULL, TRUE, NULL);

  /* really provoke the race */

  g_cond_wait (sync_cond, sync_mutex);

  object_create (NULL);

  g_mutex_unlock (sync_mutex);

  g_thread_join (creator);

}

int

main (int   argc,

      char *argv[])

{

#ifdef __SYMBIAN32__

  g_log_set_handler (NULL,  G_LOG_FLAG_FATAL| G_LOG_FLAG_RECURSION | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_MESSAGE | G_LOG_LEVEL_INFO | G_LOG_LEVEL_DEBUG, &mrtLogHandler, NULL);

  g_set_print_handler(mrtPrintHandler);

#endif /*__SYMBIAN32__*/

  g_thread_init (NULL);

  g_test_init (&argc, &argv, NULL);

  g_type_init ();

  sync_cond = g_cond_new();

  sync_mutex = g_mutex_new();

  g_test_add_func ("/GObject/threaded-class-init", test_threaded_class_init);

  g_test_add_func ("/GObject/threaded-object-init", test_threaded_object_init);

  /*return*/ g_test_run();

#ifdef __SYMBIAN32__

  testResultXml("threadtests");

#endif /* EMULATOR */

	return 0;

}