/* 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;

 }