1 /* GObject - GLib Type, Object, Parameter and Signal Library 2 * Copyright (C) 2005 Red Hat, Inc. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General 15 * Public License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330, 17 * Boston, MA 02111-1307, USA. 18 */ 19 20 #undef G_LOG_DOMAIN 21 #define G_LOG_DOMAIN "TestReferences" 22 23 #undef G_DISABLE_ASSERT 24 #undef G_DISABLE_CHECKS 25 #undef G_DISABLE_CAST_CHECKS 26 27 #include <glib-object.h> 28 29 /* This test tests weak and toggle references 30 */ 31 32 static GObject *global_object; 33 34 static gboolean object_destroyed; 35 static gboolean weak_ref1_notified; 36 static gboolean weak_ref2_notified; 37 static gboolean toggle_ref1_weakened; 38 static gboolean toggle_ref1_strengthened; 39 static gboolean toggle_ref2_weakened; 40 static gboolean toggle_ref2_strengthened; 41 static gboolean toggle_ref3_weakened; 42 static gboolean toggle_ref3_strengthened; 43 44 /* 45 * TestObject, a parent class for TestObject 46 */ 47 #define TEST_TYPE_OBJECT (test_object_get_type ()) 48 typedef struct _TestObject TestObject; 49 typedef struct _TestObjectClass TestObjectClass; 50 51 struct _TestObject 52 { 53 GObject parent_instance; 54 }; 55 struct _TestObjectClass 56 { 57 GObjectClass parent_class; 58 }; 59 60 G_DEFINE_TYPE (TestObject, test_object, G_TYPE_OBJECT); 61 62 static void 63 test_object_finalize (GObject *object) 64 { 65 object_destroyed = TRUE; 66 67 G_OBJECT_CLASS (test_object_parent_class)->finalize (object); 68 } 69 70 static void 71 test_object_class_init (TestObjectClass *class) 72 { 73 GObjectClass *object_class = G_OBJECT_CLASS (class); 74 75 object_class->finalize = test_object_finalize; 76 } 77 78 static void 79 test_object_init (TestObject *test_object) 80 { 81 } 82 83 static void 84 clear_flags (void) 85 { 86 object_destroyed = FALSE; 87 weak_ref1_notified = FALSE; 88 weak_ref2_notified = FALSE; 89 toggle_ref1_weakened = FALSE; 90 toggle_ref1_strengthened = FALSE; 91 toggle_ref2_weakened = FALSE; 92 toggle_ref2_strengthened = FALSE; 93 toggle_ref3_weakened = FALSE; 94 toggle_ref3_strengthened = FALSE; 95 } 96 97 static void 98 weak_ref1 (gpointer data, 99 GObject *object) 100 { 101 g_assert (object == global_object); 102 g_assert (data == GUINT_TO_POINTER (42)); 103 104 weak_ref1_notified = TRUE; 105 } 106 107 static void 108 weak_ref2 (gpointer data, 109 GObject *object) 110 { 111 g_assert (object == global_object); 112 g_assert (data == GUINT_TO_POINTER (24)); 113 114 weak_ref2_notified = TRUE; 115 } 116 117 static void 118 toggle_ref1 (gpointer data, 119 GObject *object, 120 gboolean is_last_ref) 121 { 122 g_assert (object == global_object); 123 g_assert (data == GUINT_TO_POINTER (42)); 124 125 if (is_last_ref) 126 toggle_ref1_weakened = TRUE; 127 else 128 toggle_ref1_strengthened = TRUE; 129 } 130 131 static void 132 toggle_ref2 (gpointer data, 133 GObject *object, 134 gboolean is_last_ref) 135 { 136 g_assert (object == global_object); 137 g_assert (data == GUINT_TO_POINTER (24)); 138 139 if (is_last_ref) 140 toggle_ref2_weakened = TRUE; 141 else 142 toggle_ref2_strengthened = TRUE; 143 } 144 145 static void 146 toggle_ref3 (gpointer data, 147 GObject *object, 148 gboolean is_last_ref) 149 { 150 g_assert (object == global_object); 151 g_assert (data == GUINT_TO_POINTER (34)); 152 153 if (is_last_ref) 154 { 155 toggle_ref3_weakened = TRUE; 156 g_object_remove_toggle_ref (object, toggle_ref3, GUINT_TO_POINTER (34)); 157 } 158 else 159 toggle_ref3_strengthened = TRUE; 160 } 161 162 int 163 main (int argc, 164 char *argv[]) 165 { 166 GObject *object; 167 168 g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) | 169 G_LOG_LEVEL_WARNING | 170 G_LOG_LEVEL_CRITICAL); 171 g_type_init (); 172 173 /* Test basic weak reference operation 174 */ 175 global_object = object = g_object_new (TEST_TYPE_OBJECT, NULL); 176 177 g_object_weak_ref (object, weak_ref1, GUINT_TO_POINTER (42)); 178 179 clear_flags (); 180 g_object_unref (object); 181 g_assert (weak_ref1_notified == TRUE); 182 g_assert (object_destroyed == TRUE); 183 184 /* Test two weak references at once 185 */ 186 global_object = object = g_object_new (TEST_TYPE_OBJECT, NULL); 187 188 g_object_weak_ref (object, weak_ref1, GUINT_TO_POINTER (42)); 189 g_object_weak_ref (object, weak_ref2, GUINT_TO_POINTER (24)); 190 191 clear_flags (); 192 g_object_unref (object); 193 g_assert (weak_ref1_notified == TRUE); 194 g_assert (weak_ref2_notified == TRUE); 195 g_assert (object_destroyed == TRUE); 196 197 /* Test remove weak references 198 */ 199 global_object = object = g_object_new (TEST_TYPE_OBJECT, NULL); 200 201 g_object_weak_ref (object, weak_ref1, GUINT_TO_POINTER (42)); 202 g_object_weak_ref (object, weak_ref2, GUINT_TO_POINTER (24)); 203 g_object_weak_unref (object, weak_ref1, GUINT_TO_POINTER (42)); 204 205 clear_flags (); 206 g_object_unref (object); 207 g_assert (weak_ref1_notified == FALSE); 208 g_assert (weak_ref2_notified == TRUE); 209 g_assert (object_destroyed == TRUE); 210 211 /* Test basic toggle reference operation 212 */ 213 global_object = object = g_object_new (TEST_TYPE_OBJECT, NULL); 214 215 g_object_add_toggle_ref (object, toggle_ref1, GUINT_TO_POINTER (42)); 216 217 clear_flags (); 218 g_object_unref (object); 219 g_assert (toggle_ref1_weakened == TRUE); 220 g_assert (toggle_ref1_strengthened == FALSE); 221 g_assert (object_destroyed == FALSE); 222 223 clear_flags (); 224 g_object_ref (object); 225 g_assert (toggle_ref1_weakened == FALSE); 226 g_assert (toggle_ref1_strengthened == TRUE); 227 g_assert (object_destroyed == FALSE); 228 229 g_object_unref (object); 230 231 clear_flags (); 232 g_object_remove_toggle_ref (object, toggle_ref1, GUINT_TO_POINTER (42)); 233 g_assert (toggle_ref1_weakened == FALSE); 234 g_assert (toggle_ref1_strengthened == FALSE); 235 g_assert (object_destroyed == TRUE); 236 237 global_object = object = g_object_new (TEST_TYPE_OBJECT, NULL); 238 239 /* Test two toggle references at once 240 */ 241 g_object_add_toggle_ref (object, toggle_ref1, GUINT_TO_POINTER (42)); 242 g_object_add_toggle_ref (object, toggle_ref2, GUINT_TO_POINTER (24)); 243 244 clear_flags (); 245 g_object_unref (object); 246 g_assert (toggle_ref1_weakened == FALSE); 247 g_assert (toggle_ref1_strengthened == FALSE); 248 g_assert (toggle_ref2_weakened == FALSE); 249 g_assert (toggle_ref2_strengthened == FALSE); 250 g_assert (object_destroyed == FALSE); 251 252 clear_flags (); 253 g_object_remove_toggle_ref (object, toggle_ref1, GUINT_TO_POINTER (42)); 254 g_assert (toggle_ref1_weakened == FALSE); 255 g_assert (toggle_ref1_strengthened == FALSE); 256 g_assert (toggle_ref2_weakened == TRUE); 257 g_assert (toggle_ref2_strengthened == FALSE); 258 g_assert (object_destroyed == FALSE); 259 260 clear_flags (); 261 g_object_remove_toggle_ref (object, toggle_ref2, GUINT_TO_POINTER (24)); 262 g_assert (toggle_ref1_weakened == FALSE); 263 g_assert (toggle_ref1_strengthened == FALSE); 264 g_assert (toggle_ref2_weakened == FALSE); 265 g_assert (toggle_ref2_strengthened == FALSE); 266 g_assert (object_destroyed == TRUE); 267 268 /* Test a toggle reference that removes itself 269 */ 270 global_object = object = g_object_new (TEST_TYPE_OBJECT, NULL); 271 272 g_object_add_toggle_ref (object, toggle_ref3, GUINT_TO_POINTER (34)); 273 274 clear_flags (); 275 g_object_unref (object); 276 g_assert (toggle_ref3_weakened == TRUE); 277 g_assert (toggle_ref3_strengthened == FALSE); 278 g_assert (object_destroyed == TRUE); 279 280 return 0; 281 } 282
