1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
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.
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.
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.
25 #include "gtypeplugin.h"
26 #include "gvaluecollector.h"
30 /* NOTE: some functions (some internal variants and exported ones)
31 * invalidate data portions of the TypeNodes. if external functions/callbacks
32 * are called, pointers to memory maintained by TypeNodes have to be looked up
33 * again. this affects most of the struct TypeNode fields, e.g. ->children or
34 * CLASSED_NODE_IFACES_ENTRIES() respectively IFACE_NODE_PREREQUISITES() (but
35 * not ->supers[]), as all those memory portions can get realloc()ed during
36 * callback invocation.
39 * - g_type_from_name() should do an ordered array lookup after fetching the
40 * the quark, instead of a second hashtable lookup.
41 * - speedup checks for virtual types, steal a bit somewhere
44 * - force interface initialization for already existing classes
47 * lock handling issues when calling static functions are indicated by
48 * uppercase letter postfixes, all static functions have to have
49 * one of the below postfixes:
50 * - _I: [Indifferent about locking]
51 * function doesn't care about locks at all
52 * - _U: [Unlocked invocation]
53 * no read or write lock has to be held across function invocation
54 * (locks may be acquired and released during invocation though)
55 * - _L: [Locked invocation]
56 * a write lock or more than 0 read locks have to be held across
58 * - _W: [Write-locked invocation]
59 * a write lock has to be held across function invokation
60 * - _Wm: [Write-locked invocation, mutatable]
61 * like _W, but the write lock might be released and reacquired
62 * during invocation, watch your pointers
65 static GStaticRWLock type_rw_lock = G_STATIC_RW_LOCK_INIT;
66 #define G_READ_LOCK(rw_lock) g_static_rw_lock_reader_lock (rw_lock)
67 #define G_READ_UNLOCK(rw_lock) g_static_rw_lock_reader_unlock (rw_lock)
68 #define G_WRITE_LOCK(rw_lock) g_static_rw_lock_writer_lock (rw_lock)
69 #define G_WRITE_UNLOCK(rw_lock) g_static_rw_lock_writer_unlock (rw_lock)
70 #define INVALID_RECURSION(func, arg, type_name) G_STMT_START{ \
71 static const gchar *_action = " invalidly modified type "; \
72 gpointer _arg = (gpointer) (arg); const gchar *_tname = (type_name), *_fname = (func); \
74 g_error ("%s(%p)%s`%s'", _fname, _arg, _action, _tname); \
76 g_error ("%s()%s`%s'", _fname, _action, _tname); \
78 #define g_return_val_if_uninitialized(condition, init_function, return_value) G_STMT_START{ \
81 g_log (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL, \
82 "%s: initialization assertion failed, use %s() prior to this function", \
83 G_STRLOC, G_STRINGIFY (init_function)); \
84 return (return_value); \
89 #define DEBUG_CODE(debug_type, code_block) G_STMT_START { \
90 if (_g_type_debug_flags & G_TYPE_DEBUG_ ## debug_type) \
93 #else /* !G_ENABLE_DEBUG */
94 #define DEBUG_CODE(debug_type, code_block) /* code_block */
95 #endif /* G_ENABLE_DEBUG */
97 #define TYPE_FUNDAMENTAL_FLAG_MASK (G_TYPE_FLAG_CLASSED | \
98 G_TYPE_FLAG_INSTANTIATABLE | \
99 G_TYPE_FLAG_DERIVABLE | \
100 G_TYPE_FLAG_DEEP_DERIVABLE)
101 #define TYPE_FLAG_MASK (G_TYPE_FLAG_ABSTRACT | G_TYPE_FLAG_VALUE_ABSTRACT)
102 #define SIZEOF_FUNDAMENTAL_INFO ((gssize) MAX (MAX (sizeof (GTypeFundamentalInfo), \
103 sizeof (gpointer)), \
107 /* --- typedefs --- */
108 typedef struct _TypeNode TypeNode;
109 typedef struct _CommonData CommonData;
110 typedef struct _IFaceData IFaceData;
111 typedef struct _ClassData ClassData;
112 typedef struct _InstanceData InstanceData;
113 typedef union _TypeData TypeData;
114 typedef struct _IFaceEntry IFaceEntry;
115 typedef struct _IFaceHolder IFaceHolder;
118 /* --- prototypes --- */
119 static inline GTypeFundamentalInfo* type_node_fundamental_info_L (TypeNode *node);
120 static void type_add_flags_W (TypeNode *node,
122 static void type_data_make_W (TypeNode *node,
123 const GTypeInfo *info,
124 const GTypeValueTable *value_table);
125 static inline void type_data_ref_Wm (TypeNode *node);
126 static inline void type_data_unref_Wm (TypeNode *node,
128 static void type_data_last_unref_Wm (GType type,
130 static inline gpointer type_get_qdata_L (TypeNode *node,
132 static inline void type_set_qdata_W (TypeNode *node,
135 static IFaceHolder* type_iface_peek_holder_L (TypeNode *iface,
136 GType instance_type);
139 /* --- structures --- */
143 guint n_children : 12;
145 guint _prot_n_ifaces_prerequisites : 9;
146 guint is_classed : 1;
147 guint is_instantiatable : 1;
154 IFaceEntry *iface_entries; /* for !iface types */
155 GType *prerequisistes;
157 GType supers[1]; /* flexible array */
159 #define SIZEOF_BASE_TYPE_NODE() (G_STRUCT_OFFSET (TypeNode, supers))
160 #define MAX_N_SUPERS (255)
161 #define MAX_N_CHILDREN (4095)
162 #define MAX_N_IFACES (511)
163 #define MAX_N_PREREQUISITES (MAX_N_IFACES)
164 #define NODE_TYPE(node) (node->supers[0])
165 #define NODE_PARENT_TYPE(node) (node->supers[1])
166 #define NODE_FUNDAMENTAL_TYPE(node) (node->supers[node->n_supers])
167 #define NODE_NAME(node) (g_quark_to_string (node->qname))
168 #define NODE_IS_IFACE(node) (NODE_FUNDAMENTAL_TYPE (node) == G_TYPE_INTERFACE)
169 #define CLASSED_NODE_N_IFACES(node) ((node)->_prot_n_ifaces_prerequisites)
170 #define CLASSED_NODE_IFACES_ENTRIES(node) ((node)->_prot.iface_entries)
171 #define IFACE_NODE_N_PREREQUISITES(node) ((node)->_prot_n_ifaces_prerequisites)
172 #define IFACE_NODE_PREREQUISITES(node) ((node)->_prot.prerequisistes)
173 #define iface_node_get_holders_L(node) ((IFaceHolder*) type_get_qdata_L ((node), static_quark_iface_holder))
174 #define iface_node_set_holders_W(node, holders) (type_set_qdata_W ((node), static_quark_iface_holder, (holders)))
175 #define iface_node_get_dependants_array_L(n) ((GType*) type_get_qdata_L ((n), static_quark_dependants_array))
176 #define iface_node_set_dependants_array_W(n,d) (type_set_qdata_W ((n), static_quark_dependants_array, (d)))
177 #define FUNDAMENTAL_FLAG_MASK ((1 << G_TYPE_FUNDAMENTAL_SHIFT) - 1)
182 GInterfaceInfo *info;
189 GTypeInterface *vtable;
194 GTypeValueTable *value_table;
200 GBaseInitFunc vtable_init_base;
201 GBaseFinalizeFunc vtable_finalize_base;
207 GBaseInitFunc class_init_base;
208 GBaseFinalizeFunc class_finalize_base;
209 GClassInitFunc class_init;
210 GClassFinalizeFunc class_finalize;
211 gconstpointer class_data;
218 GBaseInitFunc class_init_base;
219 GBaseFinalizeFunc class_finalize_base;
220 GClassInitFunc class_init;
221 GClassFinalizeFunc class_finalize;
222 gconstpointer class_data;
224 guint16 instance_size;
226 GInstanceInitFunc instance_init;
227 GMemChunk *mem_chunk;
234 InstanceData instance;
238 GTypeClassCacheFunc cache_func;
242 /* --- variables --- */
243 static guint static_n_class_cache_funcs = 0;
244 static ClassCacheFunc *static_class_cache_funcs = NULL;
245 static GQuark static_quark_type_flags = 0;
246 static GQuark static_quark_iface_holder = 0;
247 static GQuark static_quark_dependants_array = 0;
248 GTypeDebugFlags _g_type_debug_flags = 0;
251 /* --- type nodes --- */
252 static GHashTable *static_type_nodes_ht = NULL;
253 static TypeNode *static_fundamental_type_nodes[(G_TYPE_FUNDAMENTAL_MAX >> 1) + 1] = { 0, };
254 static GType static_fundamental_next = G_TYPE_RESERVED_USER_FIRST;
256 static inline TypeNode*
257 lookup_type_node_L (register GType utype)
259 if (utype <= G_TYPE_FUNDAMENTAL_MAX)
260 return static_fundamental_type_nodes[utype >> 1];
262 return (TypeNode*) (utype & ~FUNDAMENTAL_FLAG_MASK);
266 type_node_any_new_W (TypeNode *pnode,
270 GTypeFundamentalFlags type_flags)
275 guint i, node_size = 0;
277 n_supers = pnode ? pnode->n_supers + 1 : 0;
280 node_size += SIZEOF_FUNDAMENTAL_INFO; /* fundamental type info */
281 node_size += SIZEOF_BASE_TYPE_NODE (); /* TypeNode structure */
282 node_size += (sizeof (GType) * (1 + n_supers + 1)); /* self + ancestors + (0) for ->supers[] */
283 node = g_malloc0 (node_size);
284 if (!pnode) /* offset fundamental types */
286 node = G_STRUCT_MEMBER_P (node, SIZEOF_FUNDAMENTAL_INFO);
287 static_fundamental_type_nodes[ftype >> 1] = node;
293 g_assert ((type & FUNDAMENTAL_FLAG_MASK) == 0);
295 node->n_supers = n_supers;
298 node->supers[0] = type;
301 node->is_classed = (type_flags & G_TYPE_FLAG_CLASSED) != 0;
302 node->is_instantiatable = (type_flags & G_TYPE_FLAG_INSTANTIATABLE) != 0;
304 if (NODE_IS_IFACE (node))
306 IFACE_NODE_N_PREREQUISITES (node) = 0;
307 IFACE_NODE_PREREQUISITES (node) = NULL;
311 CLASSED_NODE_N_IFACES (node) = 0;
312 CLASSED_NODE_IFACES_ENTRIES (node) = NULL;
317 node->supers[0] = type;
318 memcpy (node->supers + 1, pnode->supers, sizeof (GType) * (1 + pnode->n_supers + 1));
320 node->is_classed = pnode->is_classed;
321 node->is_instantiatable = pnode->is_instantiatable;
323 if (NODE_IS_IFACE (node))
325 IFACE_NODE_N_PREREQUISITES (node) = 0;
326 IFACE_NODE_PREREQUISITES (node) = NULL;
332 CLASSED_NODE_N_IFACES (node) = CLASSED_NODE_N_IFACES (pnode);
333 CLASSED_NODE_IFACES_ENTRIES (node) = g_memdup (CLASSED_NODE_IFACES_ENTRIES (pnode),
334 sizeof (CLASSED_NODE_IFACES_ENTRIES (pnode)[0]) *
335 CLASSED_NODE_N_IFACES (node));
336 for (j = 0; j < CLASSED_NODE_N_IFACES (node); j++)
337 CLASSED_NODE_IFACES_ENTRIES (node)[j].vtable = NULL;
340 i = pnode->n_children++;
341 pnode->children = g_renew (GType, pnode->children, pnode->n_children);
342 pnode->children[i] = type;
345 node->plugin = plugin;
346 node->n_children = 0;
347 node->children = NULL;
349 node->qname = g_quark_from_string (name);
350 node->global_gdata = NULL;
352 g_hash_table_insert (static_type_nodes_ht,
353 GUINT_TO_POINTER (node->qname),
354 GUINT_TO_POINTER (type));
358 static inline GTypeFundamentalInfo*
359 type_node_fundamental_info_L (TypeNode *node)
361 GType ftype = NODE_FUNDAMENTAL_TYPE (node);
363 if (ftype != NODE_TYPE (node))
364 node = lookup_type_node_L (ftype);
366 return node ? G_STRUCT_MEMBER_P (node, -SIZEOF_FUNDAMENTAL_INFO) : NULL;
370 type_node_fundamental_new_W (GType ftype,
372 GTypeFundamentalFlags type_flags)
374 GTypeFundamentalInfo *finfo;
377 g_assert ((ftype & FUNDAMENTAL_FLAG_MASK) == 0);
378 g_assert (ftype <= G_TYPE_FUNDAMENTAL_MAX);
380 if (ftype == static_fundamental_next)
381 static_fundamental_next += 1 << G_TYPE_FUNDAMENTAL_SHIFT;
383 type_flags &= TYPE_FUNDAMENTAL_FLAG_MASK;
385 node = type_node_any_new_W (NULL, ftype, name, NULL, type_flags);
387 finfo = type_node_fundamental_info_L (node);
388 finfo->type_flags = type_flags;
394 type_node_new_W (TypeNode *pnode,
400 g_assert (pnode->n_supers < MAX_N_SUPERS);
401 g_assert (pnode->n_children < MAX_N_CHILDREN);
403 return type_node_any_new_W (pnode, NODE_FUNDAMENTAL_TYPE (pnode), name, plugin, 0);
406 static inline IFaceEntry*
407 type_lookup_iface_entry_L (TypeNode *node,
408 TypeNode *iface_node)
410 if (NODE_IS_IFACE (iface_node) && CLASSED_NODE_N_IFACES (node))
412 IFaceEntry *ifaces = CLASSED_NODE_IFACES_ENTRIES (node) - 1;
413 guint n_ifaces = CLASSED_NODE_N_IFACES (node);
414 GType iface_type = NODE_TYPE (iface_node);
421 i = (n_ifaces + 1) >> 1;
423 if (iface_type == check->iface_type)
425 else if (iface_type > check->iface_type)
430 else /* if (iface_type < check->iface_type) */
439 static inline gboolean
440 type_lookup_prerequisite_L (TypeNode *iface,
441 GType prerequisite_type)
443 if (NODE_IS_IFACE (iface) && IFACE_NODE_N_PREREQUISITES (iface))
445 GType *prerequisites = IFACE_NODE_PREREQUISITES (iface) - 1;
446 guint n_prerequisites = IFACE_NODE_N_PREREQUISITES (iface);
453 i = (n_prerequisites + 1) >> 1;
454 check = prerequisites + i;
455 if (prerequisite_type == *check)
457 else if (prerequisite_type > *check)
459 n_prerequisites -= i;
460 prerequisites = check;
462 else /* if (prerequisite_type < *check) */
463 n_prerequisites = i - 1;
465 while (n_prerequisites);
471 type_descriptive_name_L (GType type)
475 TypeNode *node = lookup_type_node_L (type);
477 return node ? NODE_NAME (node) : "<unknown>";
484 type_descriptive_name_U (GType type)
488 G_READ_LOCK (&type_rw_lock);
489 name = type_descriptive_name_L (type);
490 G_READ_UNLOCK (&type_rw_lock);
492 return (gchar *)name;
496 /* --- type consistency checks --- */
498 check_plugin_U (GTypePlugin *plugin,
499 gboolean need_complete_type_info,
500 gboolean need_complete_interface_info,
501 const gchar *type_name)
503 /* G_IS_TYPE_PLUGIN() and G_TYPE_PLUGIN_GET_CLASS() are external calls: _U
507 g_warning ("plugin handle for type `%s' is NULL",
511 if (!G_IS_TYPE_PLUGIN (plugin))
513 g_warning ("plugin pointer (%p) for type `%s' is invalid",
517 if (need_complete_type_info && !G_TYPE_PLUGIN_GET_CLASS (plugin)->complete_type_info)
519 g_warning ("plugin for type `%s' has no complete_type_info() implementation",
523 if (need_complete_interface_info && !G_TYPE_PLUGIN_GET_CLASS (plugin)->complete_interface_info)
525 g_warning ("plugin for type `%s' has no complete_interface_info() implementation",
533 check_type_name_U (const gchar *type_name)
535 static const gchar *extra_chars = "-_+";
536 const gchar *p = type_name;
539 if (!type_name[0] || !type_name[1] || !type_name[2])
541 g_warning ("type name `%s' is too short", type_name);
544 /* check the first letter */
545 name_valid = (p[0] >= 'A' && p[0] <= 'Z') || (p[0] >= 'a' && p[0] <= 'z') || p[0] == '_';
546 for (p = type_name + 1; *p; p++)
547 name_valid &= ((p[0] >= 'A' && p[0] <= 'Z') ||
548 (p[0] >= 'a' && p[0] <= 'z') ||
549 (p[0] >= '0' && p[0] <= '9') ||
550 strchr (extra_chars, p[0]));
553 g_warning ("type name `%s' contains invalid characters", type_name);
556 if (g_type_from_name (type_name))
558 g_warning ("cannot register existing type `%s'", type_name);
566 check_derivation_U (GType parent_type,
567 const gchar *type_name)
570 GTypeFundamentalInfo* finfo;
572 G_READ_LOCK (&type_rw_lock);
573 pnode = lookup_type_node_L (parent_type);
576 G_READ_UNLOCK (&type_rw_lock);
577 g_warning ("cannot derive type `%s' from invalid parent type `%s'",
579 type_descriptive_name_U (parent_type));
582 finfo = type_node_fundamental_info_L (pnode);
583 /* ensure flat derivability */
584 if (!(finfo->type_flags & G_TYPE_FLAG_DERIVABLE))
586 G_READ_UNLOCK (&type_rw_lock);
587 g_warning ("cannot derive `%s' from non-derivable parent type `%s'",
592 /* ensure deep derivability */
593 if (parent_type != NODE_FUNDAMENTAL_TYPE (pnode) &&
594 !(finfo->type_flags & G_TYPE_FLAG_DEEP_DERIVABLE))
596 G_READ_UNLOCK (&type_rw_lock);
597 g_warning ("cannot derive `%s' from non-fundamental parent type `%s'",
602 G_READ_UNLOCK (&type_rw_lock);
608 check_collect_format_I (const gchar *collect_format)
610 const gchar *p = collect_format;
611 gchar valid_format[] = { G_VALUE_COLLECT_INT, G_VALUE_COLLECT_LONG,
612 G_VALUE_COLLECT_INT64, G_VALUE_COLLECT_DOUBLE,
613 G_VALUE_COLLECT_POINTER, 0 };
616 if (!strchr (valid_format, *p++))
618 return p - collect_format <= G_VALUE_COLLECT_FORMAT_MAX_LENGTH;
622 check_value_table_I (const gchar *type_name,
623 const GTypeValueTable *value_table)
627 else if (value_table->value_init == NULL)
629 if (value_table->value_free || value_table->value_copy ||
630 value_table->value_peek_pointer ||
631 value_table->collect_format || value_table->collect_value ||
632 value_table->lcopy_format || value_table->lcopy_value)
633 g_warning ("cannot handle uninitializable values of type `%s'",
637 else /* value_table->value_init != NULL */
639 if (!value_table->value_free)
642 * g_warning ("missing `value_free()' for type `%s'", type_name);
646 if (!value_table->value_copy)
648 g_warning ("missing `value_copy()' for type `%s'", type_name);
651 if ((value_table->collect_format || value_table->collect_value) &&
652 (!value_table->collect_format || !value_table->collect_value))
654 g_warning ("one of `collect_format' and `collect_value()' is unspecified for type `%s'",
658 if (value_table->collect_format && !check_collect_format_I (value_table->collect_format))
660 g_warning ("the `%s' specification for type `%s' is too long or invalid",
665 if ((value_table->lcopy_format || value_table->lcopy_value) &&
666 (!value_table->lcopy_format || !value_table->lcopy_value))
668 g_warning ("one of `lcopy_format' and `lcopy_value()' is unspecified for type `%s'",
672 if (value_table->lcopy_format && !check_collect_format_I (value_table->lcopy_format))
674 g_warning ("the `%s' specification for type `%s' is too long or invalid",
684 check_type_info_L (TypeNode *pnode,
686 const gchar *type_name,
687 const GTypeInfo *info)
689 GTypeFundamentalInfo *finfo = type_node_fundamental_info_L (lookup_type_node_L (ftype));
690 gboolean is_interface = ftype == G_TYPE_INTERFACE;
692 g_assert (ftype <= G_TYPE_FUNDAMENTAL_MAX && !(ftype & FUNDAMENTAL_FLAG_MASK));
694 /* check instance members */
695 if (!(finfo->type_flags & G_TYPE_FLAG_INSTANTIATABLE) &&
696 (info->instance_size || info->n_preallocs || info->instance_init))
699 g_warning ("cannot instantiate `%s', derived from non-instantiatable parent type `%s'",
703 g_warning ("cannot instantiate `%s' as non-instantiatable fundamental",
707 /* check class & interface members */
708 if (!(finfo->type_flags & G_TYPE_FLAG_CLASSED) &&
709 (info->class_init || info->class_finalize || info->class_data ||
710 (!is_interface && (info->class_size || info->base_init || info->base_finalize))))
713 g_warning ("cannot create class for `%s', derived from non-classed parent type `%s'",
717 g_warning ("cannot create class for `%s' as non-classed fundamental",
721 /* check interface size */
722 if (is_interface && info->class_size < sizeof (GTypeInterface))
724 g_warning ("specified interface size for type `%s' is smaller than `GTypeInterface' size",
728 /* check class size */
729 if (finfo->type_flags & G_TYPE_FLAG_CLASSED)
731 if (info->class_size < sizeof (GTypeClass))
733 g_warning ("specified class size for type `%s' is smaller than `GTypeClass' size",
737 if (pnode && info->class_size < pnode->data->class.class_size)
739 g_warning ("specified class size for type `%s' is smaller "
740 "than the parent type's `%s' class size",
746 /* check instance size */
747 if (finfo->type_flags & G_TYPE_FLAG_INSTANTIATABLE)
749 if (info->instance_size < sizeof (GTypeInstance))
751 g_warning ("specified instance size for type `%s' is smaller than `GTypeInstance' size",
755 if (pnode && info->instance_size < pnode->data->instance.instance_size)
757 g_warning ("specified instance size for type `%s' is smaller "
758 "than the parent type's `%s' instance size",
769 find_conforming_child_type_L (TypeNode *pnode,
772 TypeNode *node = NULL;
775 if (type_lookup_iface_entry_L (pnode, iface))
778 for (i = 0; i < pnode->n_children && !node; i++)
779 node = find_conforming_child_type_L (lookup_type_node_L (pnode->children[i]), iface);
785 check_add_interface_L (GType instance_type,
788 TypeNode *node = lookup_type_node_L (instance_type);
789 TypeNode *iface = lookup_type_node_L (iface_type);
793 if (!node || !node->is_instantiatable)
795 g_warning ("cannot add interfaces to invalid (non-instantiatable) type `%s'",
796 type_descriptive_name_L (instance_type));
799 if (!iface || !NODE_IS_IFACE (iface))
801 g_warning ("cannot add invalid (non-interface) type `%s' to type `%s'",
802 type_descriptive_name_L (iface_type),
806 tnode = lookup_type_node_L (NODE_PARENT_TYPE (iface));
807 if (NODE_PARENT_TYPE (tnode) && !type_lookup_iface_entry_L (node, tnode))
809 /* 2001/7/31:timj: erk, i guess this warning is junk as interface derivation is flat */
810 g_warning ("cannot add sub-interface `%s' to type `%s' which does not conform to super-interface `%s'",
816 /* allow overriding of interface type introduced for parent type */
817 entry = type_lookup_iface_entry_L (node, iface);
818 if (entry && entry->vtable == NULL && !type_iface_peek_holder_L (iface, NODE_TYPE (node)))
820 /* ok, we do conform to this interface already, but the interface vtable was not
821 * yet intialized, and we just conform to the interface because it got added to
822 * one of our parents. so we allow overriding of holder info here.
826 /* check whether one of our children already conforms (or whether the interface
827 * got added to this node already)
829 tnode = find_conforming_child_type_L (node, iface); /* tnode is_a node */
832 g_warning ("cannot add interface type `%s' to type `%s', since type `%s' already conforms to interface",
842 check_interface_info_L (TypeNode *iface,
844 const GInterfaceInfo *info)
846 if ((info->interface_finalize || info->interface_data) && !info->interface_init)
848 g_warning ("interface type `%s' for type `%s' comes without initializer",
850 type_descriptive_name_L (instance_type));
857 /* --- type info (type node data) --- */
859 type_data_make_W (TypeNode *node,
860 const GTypeInfo *info,
861 const GTypeValueTable *value_table)
864 GTypeValueTable *vtable = NULL;
865 guint vtable_size = 0;
867 g_assert (node->data == NULL && info != NULL);
871 TypeNode *pnode = lookup_type_node_L (NODE_PARENT_TYPE (node));
874 vtable = pnode->data->common.value_table;
877 static const GTypeValueTable zero_vtable = { NULL, };
879 value_table = &zero_vtable;
884 /* need to setup vtable_size since we have to allocate it with data in one chunk */
885 vtable_size = sizeof (GTypeValueTable);
886 if (value_table->collect_format)
887 vtable_size += strlen (value_table->collect_format);
888 if (value_table->lcopy_format)
889 vtable_size += strlen (value_table->lcopy_format);
893 if (node->is_instantiatable) /* carefull, is_instantiatable is also is_classed */
895 data = g_malloc0 (sizeof (InstanceData) + vtable_size);
897 vtable = G_STRUCT_MEMBER_P (data, sizeof (InstanceData));
898 data->instance.class_size = info->class_size;
899 data->instance.class_init_base = info->base_init;
900 data->instance.class_finalize_base = info->base_finalize;
901 data->instance.class_init = info->class_init;
902 data->instance.class_finalize = info->class_finalize;
903 data->instance.class_data = info->class_data;
904 data->instance.class = NULL;
905 data->instance.instance_size = info->instance_size;
906 #ifdef DISABLE_MEM_POOLS
907 data->instance.n_preallocs = 0;
908 #else /* !DISABLE_MEM_POOLS */
909 data->instance.n_preallocs = MIN (info->n_preallocs, 1024);
910 #endif /* !DISABLE_MEM_POOLS */
911 data->instance.instance_init = info->instance_init;
912 data->instance.mem_chunk = NULL;
914 else if (node->is_classed) /* only classed */
916 data = g_malloc0 (sizeof (ClassData) + vtable_size);
918 vtable = G_STRUCT_MEMBER_P (data, sizeof (ClassData));
919 data->class.class_size = info->class_size;
920 data->class.class_init_base = info->base_init;
921 data->class.class_finalize_base = info->base_finalize;
922 data->class.class_init = info->class_init;
923 data->class.class_finalize = info->class_finalize;
924 data->class.class_data = info->class_data;
925 data->class.class = NULL;
927 else if (NODE_IS_IFACE (node))
929 data = g_malloc0 (sizeof (IFaceData) + vtable_size);
931 vtable = G_STRUCT_MEMBER_P (data, sizeof (IFaceData));
932 data->iface.vtable_size = info->class_size;
933 data->iface.vtable_init_base = info->base_init;
934 data->iface.vtable_finalize_base = info->base_finalize;
938 data = g_malloc0 (sizeof (CommonData) + vtable_size);
940 vtable = G_STRUCT_MEMBER_P (data, sizeof (CommonData));
944 node->data->common.ref_count = 1;
950 /* we allocate the vtable and its strings together with the type data, so
951 * children can take over their parent's vtable pointer, and we don't
952 * need to worry freeing it or not when the child data is destroyed
954 *vtable = *value_table;
955 p = G_STRUCT_MEMBER_P (vtable, sizeof (*vtable));
957 vtable->collect_format = p;
958 if (value_table->collect_format)
960 strcat (p, value_table->collect_format);
961 p += strlen (value_table->collect_format);
965 vtable->lcopy_format = p;
966 if (value_table->lcopy_format)
967 strcat (p, value_table->lcopy_format);
969 node->data->common.value_table = vtable;
971 g_assert (node->data->common.value_table != NULL); /* paranoid */
975 type_data_ref_Wm (TypeNode *node)
979 TypeNode *pnode = lookup_type_node_L (NODE_PARENT_TYPE (node));
981 GTypeValueTable tmp_value_table;
983 g_assert (node->plugin != NULL);
987 type_data_ref_Wm (pnode);
989 INVALID_RECURSION ("g_type_plugin_*", node->plugin, NODE_NAME (node));
992 memset (&tmp_info, 0, sizeof (tmp_info));
993 memset (&tmp_value_table, 0, sizeof (tmp_value_table));
995 G_WRITE_UNLOCK (&type_rw_lock);
996 g_type_plugin_use (node->plugin);
997 g_type_plugin_complete_type_info (node->plugin, NODE_TYPE (node), &tmp_info, &tmp_value_table);
998 G_WRITE_LOCK (&type_rw_lock);
1000 INVALID_RECURSION ("g_type_plugin_*", node->plugin, NODE_NAME (node));
1002 check_type_info_L (pnode, NODE_FUNDAMENTAL_TYPE (node), NODE_NAME (node), &tmp_info);
1003 type_data_make_W (node, &tmp_info,
1004 check_value_table_I (NODE_NAME (node),
1005 &tmp_value_table) ? &tmp_value_table : NULL);
1009 g_assert (node->data->common.ref_count > 0);
1011 node->data->common.ref_count += 1;
1016 type_data_unref_Wm (TypeNode *node,
1019 g_assert (node->data && node->data->common.ref_count);
1021 if (node->data->common.ref_count > 1)
1022 node->data->common.ref_count -= 1;
1027 g_warning ("static type `%s' unreferenced too often",
1032 type_data_last_unref_Wm (NODE_TYPE (node), uncached);
1037 type_node_add_iface_entry_W (TypeNode *node,
1040 IFaceEntry *entries;
1043 g_assert (node->is_instantiatable && CLASSED_NODE_N_IFACES (node) < MAX_N_IFACES);
1045 entries = CLASSED_NODE_IFACES_ENTRIES (node);
1046 for (i = 0; i < CLASSED_NODE_N_IFACES (node); i++)
1047 if (entries[i].iface_type == iface_type)
1049 /* this can (should) only happen if our parent type already conformed
1050 * to iface_type and node got it's own holder info. here, our
1051 * children should already have entries with NULL vtables, so
1052 * we're actually done.
1054 g_assert (entries[i].vtable == NULL);
1057 else if (entries[i].iface_type > iface_type)
1059 CLASSED_NODE_N_IFACES (node) += 1;
1060 CLASSED_NODE_IFACES_ENTRIES (node) = g_renew (IFaceEntry,
1061 CLASSED_NODE_IFACES_ENTRIES (node),
1062 CLASSED_NODE_N_IFACES (node));
1063 entries = CLASSED_NODE_IFACES_ENTRIES (node);
1064 g_memmove (entries + i + 1, entries + i, sizeof (entries[0]) * (CLASSED_NODE_N_IFACES (node) - i - 1));
1065 entries[i].iface_type = iface_type;
1066 entries[i].vtable = NULL;
1068 for (i = 0; i < node->n_children; i++)
1069 type_node_add_iface_entry_W (lookup_type_node_L (node->children[i]), iface_type);
1073 type_add_interface_W (TypeNode *node,
1075 const GInterfaceInfo *info,
1076 GTypePlugin *plugin)
1078 IFaceHolder *iholder = g_new0 (IFaceHolder, 1);
1080 /* we must not call any functions of GInterfaceInfo from within here, since
1081 * we got most probably called from _within_ a type registration function
1083 g_assert (node->is_instantiatable && NODE_IS_IFACE (iface) && ((info && !plugin) || (!info && plugin)));
1085 iholder->next = iface_node_get_holders_L (iface);
1086 iface_node_set_holders_W (iface, iholder);
1087 iholder->instance_type = NODE_TYPE (node);
1088 iholder->info = info ? g_memdup (info, sizeof (*info)) : NULL;
1089 iholder->plugin = plugin;
1091 type_node_add_iface_entry_W (node, NODE_TYPE (iface));
1095 type_iface_add_prerequisite_W (TypeNode *iface,
1096 TypeNode *prerequisite_node)
1098 GType prerequisite_type = NODE_TYPE (prerequisite_node);
1099 GType *prerequisites, *dependants;
1100 guint n_dependants, i;
1102 g_assert (NODE_IS_IFACE (iface) &&
1103 IFACE_NODE_N_PREREQUISITES (iface) < MAX_N_PREREQUISITES &&
1104 (prerequisite_node->is_instantiatable || NODE_IS_IFACE (prerequisite_node)));
1106 prerequisites = IFACE_NODE_PREREQUISITES (iface);
1107 for (i = 0; i < IFACE_NODE_N_PREREQUISITES (iface); i++)
1108 if (prerequisites[i] == prerequisite_type)
1109 return; /* we already have that prerequisiste */
1110 else if (prerequisites[i] > prerequisite_type)
1112 IFACE_NODE_N_PREREQUISITES (iface) += 1;
1113 IFACE_NODE_PREREQUISITES (iface) = g_renew (GType,
1114 IFACE_NODE_PREREQUISITES (iface),
1115 IFACE_NODE_N_PREREQUISITES (iface));
1116 prerequisites = IFACE_NODE_PREREQUISITES (iface);
1117 g_memmove (prerequisites + i + 1, prerequisites + i,
1118 sizeof (prerequisites[0]) * (IFACE_NODE_N_PREREQUISITES (iface) - i - 1));
1119 prerequisites[i] = prerequisite_type;
1121 /* we want to get notified when prerequisites get added to prerequisite_node */
1122 if (NODE_IS_IFACE (prerequisite_node))
1124 dependants = iface_node_get_dependants_array_L (prerequisite_node);
1125 n_dependants = dependants ? dependants[0] : 0;
1127 dependants = g_renew (GType, dependants, n_dependants + 1);
1128 dependants[n_dependants] = NODE_TYPE (iface);
1129 dependants[0] = n_dependants;
1130 iface_node_set_dependants_array_W (prerequisite_node, dependants);
1133 /* we need to notify all dependants */
1134 dependants = iface_node_get_dependants_array_L (iface);
1135 n_dependants = dependants ? dependants[0] : 0;
1136 for (i = 1; i <= n_dependants; i++)
1137 type_iface_add_prerequisite_W (lookup_type_node_L (dependants[i]), prerequisite_node);
1141 g_type_interface_add_prerequisite (GType interface_type,
1142 GType prerequisite_type)
1144 TypeNode *iface, *prerequisite_node;
1145 IFaceHolder *holders;
1147 g_return_if_fail (G_TYPE_IS_INTERFACE (interface_type)); /* G_TYPE_IS_INTERFACE() is an external call: _U */
1148 g_return_if_fail (!g_type_is_a (interface_type, prerequisite_type));
1149 g_return_if_fail (!g_type_is_a (prerequisite_type, interface_type));
1151 G_WRITE_LOCK (&type_rw_lock);
1152 iface = lookup_type_node_L (interface_type);
1153 prerequisite_node = lookup_type_node_L (prerequisite_type);
1154 if (!iface || !prerequisite_node || !NODE_IS_IFACE (iface))
1156 g_warning ("interface type `%s' or prerequisite type `%s' invalid",
1157 type_descriptive_name_L (interface_type),
1158 type_descriptive_name_L (prerequisite_type));
1159 G_WRITE_UNLOCK (&type_rw_lock);
1162 holders = iface_node_get_holders_L (iface);
1165 g_warning ("unable to add prerequisite `%s' to interface `%s' which is already in use for `%s'",
1166 type_descriptive_name_L (prerequisite_type),
1167 type_descriptive_name_L (interface_type),
1168 type_descriptive_name_L (holders->instance_type));
1169 G_WRITE_UNLOCK (&type_rw_lock);
1172 if (prerequisite_node->is_instantiatable)
1176 /* can have at most one publically installable instantiatable prerequisite */
1177 for (i = 0; i < IFACE_NODE_N_PREREQUISITES (iface); i++)
1179 TypeNode *prnode = lookup_type_node_L (IFACE_NODE_PREREQUISITES (iface)[i]);
1181 if (prnode->is_instantiatable)
1183 g_warning ("adding prerequisite `%s' to interface `%s' conflicts with existing prerequisite `%s'",
1184 type_descriptive_name_L (prerequisite_type),
1185 type_descriptive_name_L (interface_type),
1186 type_descriptive_name_L (NODE_TYPE (prnode)));
1187 G_WRITE_UNLOCK (&type_rw_lock);
1192 for (i = 0; i < prerequisite_node->n_supers + 1; i++)
1193 type_iface_add_prerequisite_W (iface, lookup_type_node_L (prerequisite_node->supers[i]));
1195 else if (NODE_IS_IFACE (prerequisite_node))
1198 guint n_dependants, i;
1200 dependants = iface_node_get_dependants_array_L (prerequisite_node);
1201 n_dependants = dependants ? dependants[0] : 0;
1202 for (i = 1; i <= n_dependants; i++)
1203 type_iface_add_prerequisite_W (iface, lookup_type_node_L (dependants[i]));
1204 type_iface_add_prerequisite_W (iface, prerequisite_node);
1207 g_warning ("prerequisite `%s' for interface `%s' is neither instantiatable nor interface",
1208 type_descriptive_name_L (prerequisite_type),
1209 type_descriptive_name_L (interface_type));
1210 G_WRITE_UNLOCK (&type_rw_lock);
1214 type_iface_peek_holder_L (TypeNode *iface,
1215 GType instance_type)
1217 IFaceHolder *iholder;
1219 g_assert (NODE_IS_IFACE (iface));
1221 iholder = iface_node_get_holders_L (iface);
1222 while (iholder && iholder->instance_type != instance_type)
1223 iholder = iholder->next;
1228 type_iface_retrieve_holder_info_Wm (TypeNode *iface,
1229 GType instance_type,
1232 IFaceHolder *iholder = type_iface_peek_holder_L (iface, instance_type);
1234 if (iholder && !iholder->info && need_info)
1236 GInterfaceInfo tmp_info;
1238 g_assert (iholder->plugin != NULL);
1240 type_data_ref_Wm (iface);
1242 INVALID_RECURSION ("g_type_plugin_*", iface->plugin, NODE_NAME (iface));
1244 memset (&tmp_info, 0, sizeof (tmp_info));
1246 G_WRITE_UNLOCK (&type_rw_lock);
1247 g_type_plugin_use (iholder->plugin);
1248 g_type_plugin_complete_interface_info (iholder->plugin, instance_type, NODE_TYPE (iface), &tmp_info);
1249 G_WRITE_LOCK (&type_rw_lock);
1251 INVALID_RECURSION ("g_type_plugin_*", iholder->plugin, NODE_NAME (iface));
1253 check_interface_info_L (iface, instance_type, &tmp_info);
1254 iholder->info = g_memdup (&tmp_info, sizeof (tmp_info));
1257 return iholder; /* we don't modify write lock upon returning NULL */
1261 type_iface_blow_holder_info_Wm (TypeNode *iface,
1262 GType instance_type)
1264 IFaceHolder *iholder = iface_node_get_holders_L (iface);
1266 g_assert (NODE_IS_IFACE (iface));
1268 while (iholder->instance_type != instance_type)
1269 iholder = iholder->next;
1271 if (iholder->info && iholder->plugin)
1273 g_free (iholder->info);
1274 iholder->info = NULL;
1276 G_WRITE_UNLOCK (&type_rw_lock);
1277 g_type_plugin_unuse (iholder->plugin);
1278 G_WRITE_LOCK (&type_rw_lock);
1280 type_data_unref_Wm (iface, FALSE);
1285 /* --- type structure creation/destruction --- */
1287 g_type_create_instance (GType type)
1290 GTypeInstance *instance;
1294 G_READ_LOCK (&type_rw_lock);
1295 node = lookup_type_node_L (type);
1296 G_READ_UNLOCK (&type_rw_lock);
1297 if (!node || !node->is_instantiatable)
1299 g_warning ("cannot create new instance of invalid (non-instantiatable) type `%s'",
1300 type_descriptive_name_U (type));
1303 /* G_TYPE_IS_ABSTRACT() is an external call: _U */
1304 if (G_TYPE_IS_ABSTRACT (type))
1306 g_warning ("cannot create instance of abstract (non-instantiatable) type `%s'",
1307 type_descriptive_name_U (type));
1311 class = g_type_class_ref (type);
1313 if (node->data->instance.n_preallocs)
1315 G_WRITE_LOCK (&type_rw_lock);
1316 if (!node->data->instance.mem_chunk)
1317 node->data->instance.mem_chunk = g_mem_chunk_new (NODE_NAME (node),
1318 node->data->instance.instance_size,
1319 (node->data->instance.instance_size *
1320 node->data->instance.n_preallocs),
1322 instance = g_chunk_new0 (GTypeInstance, node->data->instance.mem_chunk);
1323 G_WRITE_UNLOCK (&type_rw_lock);
1326 instance = g_malloc0 (node->data->instance.instance_size); /* fine without read lock */
1327 for (i = node->n_supers; i > 0; i--)
1331 G_READ_LOCK (&type_rw_lock);
1332 pnode = lookup_type_node_L (node->supers[i]);
1333 G_READ_UNLOCK (&type_rw_lock);
1335 if (pnode->data->instance.instance_init)
1337 instance->g_class = pnode->data->instance.class;
1338 pnode->data->instance.instance_init (instance, class);
1341 instance->g_class = class;
1343 if (node->data->instance.instance_init)
1344 node->data->instance.instance_init (instance, class);
1350 g_type_free_instance (GTypeInstance *instance)
1355 g_return_if_fail (instance != NULL && instance->g_class != NULL);
1357 G_READ_LOCK (&type_rw_lock);
1358 class = instance->g_class;
1359 node = lookup_type_node_L (class->g_type);
1360 if (!node || !node->is_instantiatable || !node->data || node->data->class.class != (gpointer) class)
1362 g_warning ("cannot free instance of invalid (non-instantiatable) type `%s'",
1363 type_descriptive_name_L (class->g_type));
1364 G_READ_UNLOCK (&type_rw_lock);
1367 G_READ_UNLOCK (&type_rw_lock);
1368 /* G_TYPE_IS_ABSTRACT() is an external call: _U */
1369 if (G_TYPE_IS_ABSTRACT (NODE_TYPE (node)))
1371 g_warning ("cannot free instance of abstract (non-instantiatable) type `%s'",
1376 instance->g_class = NULL;
1377 memset (instance, 0xaa, node->data->instance.instance_size); /* FIXME: debugging hack */
1378 if (node->data->instance.n_preallocs)
1380 G_WRITE_LOCK (&type_rw_lock);
1381 g_chunk_free (instance, node->data->instance.mem_chunk);
1382 G_WRITE_UNLOCK (&type_rw_lock);
1387 g_type_class_unref (class);
1391 type_iface_vtable_init_Wm (TypeNode *iface,
1394 IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
1395 IFaceHolder *iholder;
1396 GTypeInterface *vtable = NULL;
1399 /* type_iface_retrieve_holder_info_Wm() doesn't modify write lock for returning NULL */
1400 iholder = type_iface_retrieve_holder_info_Wm (iface, NODE_TYPE (node), TRUE);
1402 return FALSE; /* we don't modify write lock upon FALSE */
1404 g_assert (iface->data && entry && entry->vtable == NULL && iholder && iholder->info);
1406 pnode = lookup_type_node_L (NODE_PARENT_TYPE (node));
1407 if (pnode) /* want to copy over parent iface contents */
1409 IFaceEntry *pentry = type_lookup_iface_entry_L (pnode, iface);
1412 vtable = g_memdup (pentry->vtable, iface->data->iface.vtable_size);
1415 vtable = g_malloc0 (iface->data->iface.vtable_size);
1416 entry->vtable = vtable;
1417 vtable->g_type = NODE_TYPE (iface);
1418 vtable->g_instance_type = NODE_TYPE (node);
1420 if (iface->data->iface.vtable_init_base || iholder->info->interface_init)
1422 G_WRITE_UNLOCK (&type_rw_lock);
1423 if (iface->data->iface.vtable_init_base)
1424 iface->data->iface.vtable_init_base (vtable);
1425 if (iholder->info->interface_init)
1426 iholder->info->interface_init (vtable, iholder->info->interface_data);
1427 G_WRITE_LOCK (&type_rw_lock);
1429 return TRUE; /* write lock modified */
1433 type_iface_vtable_finalize_Wm (TypeNode *iface,
1435 GTypeInterface *vtable)
1437 IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
1438 IFaceHolder *iholder;
1440 /* type_iface_retrieve_holder_info_Wm() doesn't modify write lock for returning NULL */
1441 iholder = type_iface_retrieve_holder_info_Wm (iface, NODE_TYPE (node), FALSE);
1443 return FALSE; /* we don't modify write lock upon FALSE */
1445 g_assert (entry && entry->vtable == vtable && iholder->info);
1447 entry->vtable = NULL;
1448 if (iholder->info->interface_finalize || iface->data->iface.vtable_finalize_base)
1450 G_WRITE_UNLOCK (&type_rw_lock);
1451 if (iholder->info->interface_finalize)
1452 iholder->info->interface_finalize (vtable, iholder->info->interface_data);
1453 if (iface->data->iface.vtable_finalize_base)
1454 iface->data->iface.vtable_finalize_base (vtable);
1455 G_WRITE_LOCK (&type_rw_lock);
1458 vtable->g_instance_type = 0;
1461 type_iface_blow_holder_info_Wm (iface, NODE_TYPE (node));
1463 return TRUE; /* write lock modified */
1467 type_class_init_Wm (TypeNode *node,
1470 GSList *slist, *init_slist = NULL;
1473 TypeNode *bnode, *pnode;
1476 g_assert (node->is_classed && node->data &&
1477 node->data->class.class_size &&
1478 !node->data->class.class);
1480 class = g_malloc0 (node->data->class.class_size);
1481 node->data->class.class = class;
1485 TypeNode *pnode = lookup_type_node_L (pclass->g_type);
1487 memcpy (class, pclass, pnode->data->class.class_size);
1489 class->g_type = NODE_TYPE (node);
1491 G_WRITE_UNLOCK (&type_rw_lock);
1493 /* stack all base class initialization functions, so we
1494 * call them in ascending order.
1496 G_READ_LOCK (&type_rw_lock);
1497 for (bnode = node; bnode; bnode = lookup_type_node_L (NODE_PARENT_TYPE (bnode)))
1498 if (bnode->data->class.class_init_base)
1499 init_slist = g_slist_prepend (init_slist, (gpointer) bnode->data->class.class_init_base);
1500 G_READ_UNLOCK (&type_rw_lock);
1501 for (slist = init_slist; slist; slist = slist->next)
1503 GBaseInitFunc class_init_base = (GBaseInitFunc) slist->data;
1505 class_init_base (class);
1507 g_slist_free (init_slist);
1509 if (node->data->class.class_init)
1510 node->data->class.class_init (class, (gpointer) node->data->class.class_data);
1512 G_WRITE_LOCK (&type_rw_lock);
1514 /* ok, we got the class done, now initialize all interfaces, either
1515 * from parent, or through our holder info
1517 pnode = lookup_type_node_L (NODE_PARENT_TYPE (node));
1518 entry = CLASSED_NODE_IFACES_ENTRIES (node) + 0;
1521 g_assert (entry->vtable == NULL);
1523 if (!type_iface_vtable_init_Wm (lookup_type_node_L (entry->iface_type), node))
1527 /* type_iface_vtable_init_Wm() doesn't modify write lock upon FALSE,
1528 * need to get this interface from parent
1530 g_assert (pnode != NULL);
1532 for (j = 0; j < CLASSED_NODE_N_IFACES (pnode); j++)
1534 IFaceEntry *pentry = CLASSED_NODE_IFACES_ENTRIES (pnode) + j;
1536 if (pentry->iface_type == entry->iface_type)
1538 entry->vtable = pentry->vtable;
1542 g_assert (entry->vtable != NULL);
1545 /* refetch entry, IFACES_ENTRIES might be modified */
1546 for (entry = NULL, i = 0; i < CLASSED_NODE_N_IFACES (node); i++)
1547 if (!CLASSED_NODE_IFACES_ENTRIES (node)[i].vtable)
1548 entry = CLASSED_NODE_IFACES_ENTRIES (node) + i;
1553 type_data_finalize_class_ifaces_Wm (TypeNode *node)
1558 g_assert (node->is_instantiatable && node->data && node->data->class.class && node->data->common.ref_count == 0);
1560 g_message ("finalizing interfaces for %sClass `%s'",
1561 type_descriptive_name_L (NODE_FUNDAMENTAL_TYPE (node)),
1562 type_descriptive_name_L (NODE_TYPE (node)));
1564 for (entry = NULL, i = 0; i < CLASSED_NODE_N_IFACES (node); i++)
1565 if (CLASSED_NODE_IFACES_ENTRIES (node)[i].vtable &&
1566 CLASSED_NODE_IFACES_ENTRIES (node)[i].vtable->g_instance_type == NODE_TYPE (node))
1567 entry = CLASSED_NODE_IFACES_ENTRIES (node) + i;
1570 if (!type_iface_vtable_finalize_Wm (lookup_type_node_L (entry->iface_type), node, entry->vtable))
1572 /* type_iface_vtable_finalize_Wm() doesn't modify write lock upon FALSE,
1573 * iface vtable came from parent
1575 entry->vtable = NULL;
1578 /* refetch entry, IFACES_ENTRIES might be modified */
1579 for (entry = NULL, i = 0; i < CLASSED_NODE_N_IFACES (node); i++)
1580 if (CLASSED_NODE_IFACES_ENTRIES (node)[i].vtable &&
1581 CLASSED_NODE_IFACES_ENTRIES (node)[i].vtable->g_instance_type == NODE_TYPE (node))
1582 entry = CLASSED_NODE_IFACES_ENTRIES (node) + i;
1587 type_data_finalize_class_U (TypeNode *node,
1590 GTypeClass *class = cdata->class;
1593 g_assert (cdata->class && cdata->common.ref_count == 0);
1595 if (cdata->class_finalize)
1596 cdata->class_finalize (class, (gpointer) cdata->class_data);
1598 /* call all base class destruction functions in descending order
1600 if (cdata->class_finalize_base)
1601 cdata->class_finalize_base (class);
1602 G_READ_LOCK (&type_rw_lock);
1603 for (bnode = lookup_type_node_L (NODE_PARENT_TYPE (node)); bnode; bnode = lookup_type_node_L (NODE_PARENT_TYPE (bnode)))
1604 if (bnode->data->class.class_finalize_base)
1606 G_READ_UNLOCK (&type_rw_lock);
1607 bnode->data->class.class_finalize_base (class);
1608 G_READ_LOCK (&type_rw_lock);
1610 G_READ_UNLOCK (&type_rw_lock);
1613 g_free (cdata->class);
1617 type_data_last_unref_Wm (GType type,
1620 TypeNode *node = lookup_type_node_L (type);
1622 g_return_if_fail (node != NULL && node->plugin != NULL);
1624 if (!node->data || node->data->common.ref_count == 0)
1626 g_warning ("cannot drop last reference to unreferenced type `%s'",
1627 type_descriptive_name_U (type));
1631 if (node->is_classed && node->data && node->data->class.class && static_n_class_cache_funcs)
1635 G_WRITE_UNLOCK (&type_rw_lock);
1636 G_READ_LOCK (&type_rw_lock);
1637 for (i = 0; i < static_n_class_cache_funcs; i++)
1639 GTypeClassCacheFunc cache_func = static_class_cache_funcs[i].cache_func;
1640 gpointer cache_data = static_class_cache_funcs[i].cache_data;
1641 gboolean need_break;
1643 G_READ_UNLOCK (&type_rw_lock);
1644 need_break = cache_func (cache_data, node->data->class.class);
1645 G_READ_LOCK (&type_rw_lock);
1646 if (!node->data || node->data->common.ref_count == 0)
1647 INVALID_RECURSION ("GType class cache function ", cache_func, NODE_NAME (node));
1651 G_READ_UNLOCK (&type_rw_lock);
1652 G_WRITE_LOCK (&type_rw_lock);
1655 if (node->data->common.ref_count > 1) /* may have been re-referenced meanwhile */
1656 node->data->common.ref_count -= 1;
1659 GType ptype = NODE_PARENT_TYPE (node);
1662 node->data->common.ref_count = 0;
1664 if (node->is_instantiatable && node->data->instance.mem_chunk)
1666 g_mem_chunk_destroy (node->data->instance.mem_chunk);
1667 node->data->instance.mem_chunk = NULL;
1671 if (node->is_classed && tdata->class.class)
1673 if (CLASSED_NODE_N_IFACES (node))
1674 type_data_finalize_class_ifaces_Wm (node);
1676 G_WRITE_UNLOCK (&type_rw_lock);
1677 type_data_finalize_class_U (node, &tdata->class);
1678 G_WRITE_LOCK (&type_rw_lock);
1683 /* freeing tdata->common.value_table and its contents is taking care of
1684 * by allocating it in one chunk with tdata
1689 type_data_unref_Wm (lookup_type_node_L (ptype), FALSE);
1690 G_WRITE_UNLOCK (&type_rw_lock);
1691 g_type_plugin_unuse (node->plugin);
1692 G_WRITE_LOCK (&type_rw_lock);
1697 g_type_add_class_cache_func (gpointer cache_data,
1698 GTypeClassCacheFunc cache_func)
1702 g_return_if_fail (cache_func != NULL);
1704 G_WRITE_LOCK (&type_rw_lock);
1705 i = static_n_class_cache_funcs++;
1706 static_class_cache_funcs = g_renew (ClassCacheFunc, static_class_cache_funcs, static_n_class_cache_funcs);
1707 static_class_cache_funcs[i].cache_data = cache_data;
1708 static_class_cache_funcs[i].cache_func = cache_func;
1709 G_WRITE_UNLOCK (&type_rw_lock);
1713 g_type_remove_class_cache_func (gpointer cache_data,
1714 GTypeClassCacheFunc cache_func)
1716 gboolean found_it = FALSE;
1719 g_return_if_fail (cache_func != NULL);
1721 G_WRITE_LOCK (&type_rw_lock);
1722 for (i = 0; i < static_n_class_cache_funcs; i++)
1723 if (static_class_cache_funcs[i].cache_data == cache_data &&
1724 static_class_cache_funcs[i].cache_func == cache_func)
1726 static_n_class_cache_funcs--;
1727 g_memmove (static_class_cache_funcs + i,
1728 static_class_cache_funcs + i + 1,
1729 sizeof (static_class_cache_funcs[0]) * (static_n_class_cache_funcs - i));
1730 static_class_cache_funcs = g_renew (ClassCacheFunc, static_class_cache_funcs, static_n_class_cache_funcs);
1734 G_WRITE_UNLOCK (&type_rw_lock);
1737 g_warning (G_STRLOC ": cannot remove unregistered class cache func %p with data %p",
1738 cache_func, cache_data);
1742 /* --- type registration --- */
1744 g_type_register_fundamental (GType type_id,
1745 const gchar *type_name,
1746 const GTypeInfo *info,
1747 const GTypeFundamentalInfo *finfo,
1750 GTypeFundamentalInfo *node_finfo;
1753 g_return_val_if_uninitialized (static_quark_type_flags, g_type_init, 0);
1754 g_return_val_if_fail (type_id > 0, 0);
1755 g_return_val_if_fail (type_name != NULL, 0);
1756 g_return_val_if_fail (info != NULL, 0);
1757 g_return_val_if_fail (finfo != NULL, 0);
1759 if (!check_type_name_U (type_name))
1761 if ((type_id & FUNDAMENTAL_FLAG_MASK) ||
1762 type_id > G_TYPE_FUNDAMENTAL_MAX)
1764 g_warning ("attempt to register fundamental type `%s' with invalid type id (%u)",
1769 if ((finfo->type_flags & G_TYPE_FLAG_INSTANTIATABLE) &&
1770 !(finfo->type_flags & G_TYPE_FLAG_CLASSED))
1772 g_warning ("cannot register instantiatable fundamental type `%s' as non-classed",
1776 G_WRITE_LOCK (&type_rw_lock);
1777 if (lookup_type_node_L (type_id))
1779 G_WRITE_UNLOCK (&type_rw_lock);
1780 g_warning ("cannot register existing fundamental type `%s' (as `%s')",
1781 type_descriptive_name_U (type_id),
1786 node = type_node_fundamental_new_W (type_id, type_name, finfo->type_flags);
1787 node_finfo = type_node_fundamental_info_L (node);
1788 type_add_flags_W (node, flags);
1790 if (check_type_info_L (NULL, NODE_FUNDAMENTAL_TYPE (node), type_name, info))
1791 type_data_make_W (node, info,
1792 check_value_table_I (type_name, info->value_table) ? info->value_table : NULL);
1793 G_WRITE_UNLOCK (&type_rw_lock);
1795 return NODE_TYPE (node);
1799 g_type_register_static (GType parent_type,
1800 const gchar *type_name,
1801 const GTypeInfo *info,
1804 TypeNode *pnode, *node;
1807 g_return_val_if_uninitialized (static_quark_type_flags, g_type_init, 0);
1808 g_return_val_if_fail (parent_type > 0, 0);
1809 g_return_val_if_fail (type_name != NULL, 0);
1810 g_return_val_if_fail (info != NULL, 0);
1812 if (!check_type_name_U (type_name) ||
1813 !check_derivation_U (parent_type, type_name))
1815 if (info->class_finalize)
1817 g_warning ("class finalizer specified for static type `%s'",
1822 G_WRITE_LOCK (&type_rw_lock);
1823 pnode = lookup_type_node_L (parent_type);
1824 type_data_ref_Wm (pnode);
1825 if (check_type_info_L (pnode, NODE_FUNDAMENTAL_TYPE (pnode), type_name, info))
1827 node = type_node_new_W (pnode, type_name, NULL);
1828 type_add_flags_W (node, flags);
1829 type = NODE_TYPE (node);
1830 type_data_make_W (node, info,
1831 check_value_table_I (type_name, info->value_table) ? info->value_table : NULL);
1833 G_WRITE_UNLOCK (&type_rw_lock);
1839 g_type_register_dynamic (GType parent_type,
1840 const gchar *type_name,
1841 GTypePlugin *plugin,
1844 TypeNode *pnode, *node;
1847 g_return_val_if_uninitialized (static_quark_type_flags, g_type_init, 0);
1848 g_return_val_if_fail (parent_type > 0, 0);
1849 g_return_val_if_fail (type_name != NULL, 0);
1850 g_return_val_if_fail (plugin != NULL, 0);
1852 if (!check_type_name_U (type_name) ||
1853 !check_derivation_U (parent_type, type_name) ||
1854 !check_plugin_U (plugin, TRUE, FALSE, type_name))
1857 G_WRITE_LOCK (&type_rw_lock);
1858 pnode = lookup_type_node_L (parent_type);
1859 node = type_node_new_W (pnode, type_name, plugin);
1860 type_add_flags_W (node, flags);
1861 type = NODE_TYPE (node);
1862 G_WRITE_UNLOCK (&type_rw_lock);
1868 g_type_add_interface_static (GType instance_type,
1869 GType interface_type,
1870 const GInterfaceInfo *info)
1872 /* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
1873 g_return_if_fail (G_TYPE_IS_INSTANTIATABLE (instance_type));
1874 g_return_if_fail (g_type_parent (interface_type) == G_TYPE_INTERFACE);
1876 G_WRITE_LOCK (&type_rw_lock);
1877 if (check_add_interface_L (instance_type, interface_type))
1879 TypeNode *node = lookup_type_node_L (instance_type);
1880 TypeNode *iface = lookup_type_node_L (interface_type);
1882 if (check_interface_info_L (iface, NODE_TYPE (node), info))
1884 type_add_interface_W (node, iface, info, NULL);
1885 /* if we have a class already, the interface vtable needs to
1886 * be initialized as well
1888 if (node->data && node->data->class.class)
1889 type_iface_vtable_init_Wm (iface, node);
1892 G_WRITE_UNLOCK (&type_rw_lock);
1896 g_type_add_interface_dynamic (GType instance_type,
1897 GType interface_type,
1898 GTypePlugin *plugin)
1902 /* G_TYPE_IS_INSTANTIATABLE() is an external call: _U */
1903 g_return_if_fail (G_TYPE_IS_INSTANTIATABLE (instance_type));
1904 g_return_if_fail (g_type_parent (interface_type) == G_TYPE_INTERFACE);
1906 G_READ_LOCK (&type_rw_lock);
1907 node = lookup_type_node_L (instance_type);
1908 G_READ_UNLOCK (&type_rw_lock);
1909 if (!check_plugin_U (plugin, FALSE, TRUE, NODE_NAME (node)))
1912 G_WRITE_LOCK (&type_rw_lock);
1913 if (check_add_interface_L (instance_type, interface_type))
1915 TypeNode *iface = lookup_type_node_L (interface_type);
1917 type_add_interface_W (node, iface, NULL, plugin);
1918 /* if we have a class already, the interface vtable needs to
1919 * be initialized as well
1921 if (node->data && node->data->class.class)
1922 type_iface_vtable_init_Wm (iface, node);
1924 G_WRITE_UNLOCK (&type_rw_lock);
1928 /* --- public API functions --- */
1930 g_type_class_ref (GType type)
1934 /* optimize for common code path
1936 G_WRITE_LOCK (&type_rw_lock);
1937 node = lookup_type_node_L (type);
1938 if (node && node->is_classed && node->data &&
1939 node->data->class.class && node->data->common.ref_count > 0)
1941 type_data_ref_Wm (node);
1942 G_WRITE_UNLOCK (&type_rw_lock);
1944 return node->data->class.class;
1947 if (!node || !node->is_classed ||
1948 (node->data && node->data->common.ref_count < 1))
1950 G_WRITE_UNLOCK (&type_rw_lock);
1951 g_warning ("cannot retrieve class for invalid (unclassed) type `%s'",
1952 type_descriptive_name_U (type));
1956 type_data_ref_Wm (node);
1958 if (!node->data->class.class)
1960 GType ptype = NODE_PARENT_TYPE (node);
1961 GTypeClass *pclass = NULL;
1965 G_WRITE_UNLOCK (&type_rw_lock);
1966 pclass = g_type_class_ref (ptype);
1967 if (node->data->class.class)
1968 INVALID_RECURSION ("g_type_plugin_*", node->plugin, NODE_NAME (node));
1969 G_WRITE_LOCK (&type_rw_lock);
1972 type_class_init_Wm (node, pclass);
1974 G_WRITE_UNLOCK (&type_rw_lock);
1976 return node->data->class.class;
1980 g_type_class_unref (gpointer g_class)
1983 GTypeClass *class = g_class;
1985 g_return_if_fail (g_class != NULL);
1987 G_WRITE_LOCK (&type_rw_lock);
1988 node = lookup_type_node_L (class->g_type);
1989 if (node && node->is_classed && node->data &&
1990 node->data->class.class == class && node->data->common.ref_count > 0)
1991 type_data_unref_Wm (node, FALSE);
1993 g_warning ("cannot unreference class of invalid (unclassed) type `%s'",
1994 type_descriptive_name_L (class->g_type));
1995 G_WRITE_UNLOCK (&type_rw_lock);
1999 g_type_class_unref_uncached (gpointer g_class)
2002 GTypeClass *class = g_class;
2004 g_return_if_fail (g_class != NULL);
2006 G_WRITE_LOCK (&type_rw_lock);
2007 node = lookup_type_node_L (class->g_type);
2008 if (node && node->is_classed && node->data &&
2009 node->data->class.class == class && node->data->common.ref_count > 0)
2010 type_data_unref_Wm (node, TRUE);
2012 g_warning ("cannot unreference class of invalid (unclassed) type `%s'",
2013 type_descriptive_name_L (class->g_type));
2014 G_WRITE_UNLOCK (&type_rw_lock);
2018 g_type_class_peek (GType type)
2023 G_READ_LOCK (&type_rw_lock);
2024 node = lookup_type_node_L (type);
2025 if (node && node->is_classed && node->data && node->data->class.class) /* common.ref_count _may_ be 0 */
2026 class = node->data->class.class;
2029 G_READ_UNLOCK (&type_rw_lock);
2035 g_type_class_peek_parent (gpointer g_class)
2038 gpointer class = NULL;
2040 g_return_val_if_fail (g_class != NULL, NULL);
2042 G_READ_LOCK (&type_rw_lock);
2043 node = lookup_type_node_L (G_TYPE_FROM_CLASS (g_class));
2044 if (node && node->is_classed && node->data && NODE_PARENT_TYPE (node))
2046 node = lookup_type_node_L (NODE_PARENT_TYPE (node));
2047 class = node->data->class.class;
2049 else if (NODE_PARENT_TYPE (node))
2050 g_warning (G_STRLOC ": invalid class pointer `%p'", g_class);
2051 G_READ_UNLOCK (&type_rw_lock);
2057 g_type_interface_peek (gpointer instance_class,
2062 gpointer vtable = NULL;
2063 GTypeClass *class = instance_class;
2065 g_return_val_if_fail (instance_class != NULL, NULL);
2067 G_READ_LOCK (&type_rw_lock);
2068 node = lookup_type_node_L (class->g_type);
2069 iface = lookup_type_node_L (iface_type);
2070 if (node && node->is_instantiatable && iface)
2072 IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
2074 if (entry && entry->vtable)
2075 vtable = entry->vtable;
2078 g_warning (G_STRLOC ": invalid class pointer `%p'", class);
2079 G_READ_UNLOCK (&type_rw_lock);
2085 g_type_interface_peek_parent (gpointer g_iface)
2089 gpointer vtable = NULL;
2090 GTypeInterface *iface_class = g_iface;
2092 g_return_val_if_fail (g_iface != NULL, NULL);
2094 G_READ_LOCK (&type_rw_lock);
2095 iface = lookup_type_node_L (iface_class->g_type);
2096 node = lookup_type_node_L (iface_class->g_instance_type);
2098 node = lookup_type_node_L (NODE_PARENT_TYPE (node));
2099 if (node && node->is_instantiatable && iface)
2101 IFaceEntry *entry = type_lookup_iface_entry_L (node, iface);
2103 if (entry && entry->vtable)
2104 vtable = entry->vtable;
2107 g_warning (G_STRLOC ": invalid interface pointer `%p'", g_iface);
2108 G_READ_UNLOCK (&type_rw_lock);
2113 G_CONST_RETURN gchar*
2114 g_type_name (GType type)
2118 g_return_val_if_uninitialized (static_quark_type_flags, g_type_init, NULL);
2120 G_READ_LOCK (&type_rw_lock);
2121 node = lookup_type_node_L (type);
2122 G_READ_UNLOCK (&type_rw_lock);
2124 return node ? NODE_NAME (node) : NULL;
2128 g_type_qname (GType type)
2132 G_READ_LOCK (&type_rw_lock);
2133 node = lookup_type_node_L (type);
2134 G_READ_UNLOCK (&type_rw_lock);
2136 return node ? node->qname : 0;
2140 g_type_from_name (const gchar *name)
2145 g_return_val_if_fail (name != NULL, 0);
2147 quark = g_quark_try_string (name);
2150 G_READ_LOCK (&type_rw_lock);
2151 type = GPOINTER_TO_UINT (g_hash_table_lookup (static_type_nodes_ht, GUINT_TO_POINTER (quark)));
2152 G_READ_UNLOCK (&type_rw_lock);
2159 g_type_parent (GType type)
2163 G_READ_LOCK (&type_rw_lock);
2164 node = lookup_type_node_L (type);
2165 G_READ_UNLOCK (&type_rw_lock);
2167 return node ? NODE_PARENT_TYPE (node) : 0;
2171 g_type_depth (GType type)
2175 G_READ_LOCK (&type_rw_lock);
2176 node = lookup_type_node_L (type);
2177 G_READ_UNLOCK (&type_rw_lock);
2179 return node ? node->n_supers + 1 : 0;
2183 g_type_next_base (GType type,
2189 G_READ_LOCK (&type_rw_lock);
2190 node = lookup_type_node_L (type);
2193 TypeNode *base_node = lookup_type_node_L (base_type);
2195 if (base_node && base_node->n_supers < node->n_supers)
2197 guint n = node->n_supers - base_node->n_supers;
2199 if (node->supers[n] == base_type)
2200 atype = node->supers[n - 1];
2203 G_READ_UNLOCK (&type_rw_lock);
2208 static inline gboolean
2209 type_node_is_a_L (TypeNode *node,
2210 TypeNode *iface_node,
2211 /* support_inheritance */
2212 gboolean support_interfaces,
2213 gboolean support_prerequisites)
2215 if (support_interfaces &&
2216 node->is_instantiatable && NODE_IS_IFACE (iface_node) &&
2217 type_lookup_iface_entry_L (node, iface_node) != NULL)
2219 else if (/* support_inheritance && */
2220 iface_node->n_supers <= node->n_supers &&
2221 node->supers[node->n_supers - iface_node->n_supers] == NODE_TYPE (iface_node))
2223 else if (support_prerequisites &&
2224 NODE_IS_IFACE (node) &&
2225 type_lookup_prerequisite_L (node, NODE_TYPE (iface_node)))
2232 g_type_is_a (GType type,
2235 TypeNode *node, *iface_node;
2238 G_READ_LOCK (&type_rw_lock);
2239 node = lookup_type_node_L (type);
2240 iface_node = lookup_type_node_L (iface_type);
2241 is_a = node && iface_node && type_node_is_a_L (node, iface_node, TRUE, TRUE);
2242 G_READ_UNLOCK (&type_rw_lock);
2247 GType* /* free result */
2248 g_type_children (GType type,
2253 G_READ_LOCK (&type_rw_lock);
2254 node = lookup_type_node_L (type);
2257 GType *children = g_new (GType, node->n_children + 1);
2259 memcpy (children, node->children, sizeof (GType) * node->n_children);
2260 children[node->n_children] = 0;
2263 *n_children = node->n_children;
2264 G_READ_UNLOCK (&type_rw_lock);
2270 G_READ_UNLOCK (&type_rw_lock);
2278 GType* /* free result */
2279 g_type_interfaces (GType type,
2280 guint *n_interfaces)
2284 G_READ_LOCK (&type_rw_lock);
2285 node = lookup_type_node_L (type);
2286 if (node && node->is_instantiatable)
2288 GType *ifaces = g_new (GType, CLASSED_NODE_N_IFACES (node) + 1);
2291 for (i = 0; i < CLASSED_NODE_N_IFACES (node); i++)
2292 ifaces[i] = CLASSED_NODE_IFACES_ENTRIES (node)[i].iface_type;
2296 *n_interfaces = CLASSED_NODE_N_IFACES (node);
2297 G_READ_UNLOCK (&type_rw_lock);
2303 G_READ_UNLOCK (&type_rw_lock);
2311 typedef struct _QData QData;
2323 static inline gpointer
2324 type_get_qdata_L (TypeNode *node,
2327 GData *gdata = node->global_gdata;
2329 if (quark && gdata && gdata->n_qdatas)
2331 QData *qdatas = gdata->qdatas - 1;
2332 guint n_qdatas = gdata->n_qdatas;
2339 i = (n_qdatas + 1) / 2;
2341 if (quark == check->quark)
2343 else if (quark > check->quark)
2348 else /* if (quark < check->quark) */
2357 g_type_get_qdata (GType type,
2363 G_READ_LOCK (&type_rw_lock);
2364 node = lookup_type_node_L (type);
2367 data = type_get_qdata_L (node, quark);
2368 G_READ_UNLOCK (&type_rw_lock);
2372 G_READ_UNLOCK (&type_rw_lock);
2373 g_return_val_if_fail (node != NULL, NULL);
2380 type_set_qdata_W (TypeNode *node,
2388 /* setup qdata list if necessary */
2389 if (!node->global_gdata)
2390 node->global_gdata = g_new0 (GData, 1);
2391 gdata = node->global_gdata;
2393 /* try resetting old data */
2394 qdata = gdata->qdatas;
2395 for (i = 0; i < gdata->n_qdatas; i++)
2396 if (qdata[i].quark == quark)
2398 qdata[i].data = data;
2404 gdata->qdatas = g_renew (QData, gdata->qdatas, gdata->n_qdatas);
2405 qdata = gdata->qdatas;
2406 for (i = 0; i < gdata->n_qdatas - 1; i++)
2407 if (qdata[i].quark > quark)
2409 g_memmove (qdata + i + 1, qdata + i, sizeof (qdata[0]) * (gdata->n_qdatas - i - 1));
2410 qdata[i].quark = quark;
2411 qdata[i].data = data;
2415 g_type_set_qdata (GType type,
2421 g_return_if_fail (quark != 0);
2423 G_WRITE_LOCK (&type_rw_lock);
2424 node = lookup_type_node_L (type);
2427 type_set_qdata_W (node, quark, data);
2428 G_WRITE_UNLOCK (&type_rw_lock);
2432 G_WRITE_UNLOCK (&type_rw_lock);
2433 g_return_if_fail (node != NULL);
2438 type_add_flags_W (TypeNode *node,
2443 g_return_if_fail ((flags & ~TYPE_FLAG_MASK) == 0);
2444 g_return_if_fail (node != NULL);
2446 if ((flags & TYPE_FLAG_MASK) && node->is_classed && node->data && node->data->class.class)
2447 g_warning ("tagging type `%s' as abstract after class initialization", NODE_NAME (node));
2448 dflags = GPOINTER_TO_UINT (type_get_qdata_L (node, static_quark_type_flags));
2450 type_set_qdata_W (node, static_quark_type_flags, GUINT_TO_POINTER (dflags));
2454 g_type_query (GType type,
2459 g_return_if_fail (query != NULL);
2461 G_READ_LOCK (&type_rw_lock);
2462 node = lookup_type_node_L (type);
2463 if (node && node->is_classed && !node->plugin && node->data)
2465 /* type is classed and static, probably even instantiatable */
2467 query->type = NODE_TYPE (node);
2468 query->type_name = NODE_NAME (node);
2469 query->class_size = node->data->class.class_size;
2470 query->instance_size = node->is_instantiatable ? node->data->instance.instance_size : 0;
2474 /* node is not static and classed, won't allow query */
2477 G_READ_UNLOCK (&type_rw_lock);
2481 /* --- implementation details --- */
2483 g_type_test_flags (GType type,
2487 gboolean result = FALSE;
2489 G_READ_LOCK (&type_rw_lock);
2490 node = lookup_type_node_L (type);
2493 guint fflags = flags & TYPE_FUNDAMENTAL_FLAG_MASK;
2494 guint tflags = flags & TYPE_FLAG_MASK;
2498 GTypeFundamentalInfo *finfo = type_node_fundamental_info_L (node);
2500 fflags = (finfo->type_flags & fflags) == fflags;
2506 tflags = (tflags & GPOINTER_TO_UINT (type_get_qdata_L (node, static_quark_type_flags))) == tflags;
2510 result = tflags && fflags;
2512 G_READ_UNLOCK (&type_rw_lock);
2518 g_type_get_plugin (GType type)
2522 G_READ_LOCK (&type_rw_lock);
2523 node = lookup_type_node_L (type);
2524 G_READ_UNLOCK (&type_rw_lock);
2526 return node ? node->plugin : NULL;
2530 g_type_interface_get_plugin (GType instance_type,
2531 GType interface_type)
2536 g_return_val_if_fail (G_TYPE_IS_INTERFACE (interface_type), NULL); /* G_TYPE_IS_INTERFACE() is an external call: _U */
2538 G_READ_LOCK (&type_rw_lock);
2539 node = lookup_type_node_L (instance_type);
2540 iface = lookup_type_node_L (interface_type);
2543 IFaceHolder *iholder = iface_node_get_holders_L (iface);
2545 while (iholder && iholder->instance_type != instance_type)
2546 iholder = iholder->next;
2547 G_READ_UNLOCK (&type_rw_lock);
2550 return iholder->plugin;
2553 G_READ_UNLOCK (&type_rw_lock);
2555 g_return_val_if_fail (node == NULL, NULL);
2556 g_return_val_if_fail (iface == NULL, NULL);
2558 g_warning (G_STRLOC ": attempt to look up plugin for invalid instance/interface type pair.");
2564 g_type_fundamental_next (void)
2568 G_READ_LOCK (&type_rw_lock);
2569 type = static_fundamental_next;
2570 G_READ_UNLOCK (&type_rw_lock);
2572 return type <= G_TYPE_FUNDAMENTAL_MAX ? type : 0;
2576 g_type_fundamental (GType type_id)
2580 G_READ_LOCK (&type_rw_lock);
2581 node = lookup_type_node_L (type_id);
2582 G_READ_UNLOCK (&type_rw_lock);
2584 return node ? NODE_FUNDAMENTAL_TYPE (node) : 0;
2588 g_type_check_instance_is_a (GTypeInstance *type_instance,
2591 TypeNode *node, *iface;
2594 if (!type_instance || !type_instance->g_class)
2597 G_READ_LOCK (&type_rw_lock);
2598 node = lookup_type_node_L (type_instance->g_class->g_type);
2599 iface = lookup_type_node_L (iface_type);
2600 check = node && node->is_instantiatable && iface && type_node_is_a_L (node, iface, TRUE, FALSE);
2601 G_READ_UNLOCK (&type_rw_lock);
2607 g_type_check_class_is_a (GTypeClass *type_class,
2610 TypeNode *node, *iface;
2616 G_READ_LOCK (&type_rw_lock);
2617 node = lookup_type_node_L (type_class->g_type);
2618 iface = lookup_type_node_L (is_a_type);
2619 check = node && node->is_classed && iface && type_node_is_a_L (node, iface, FALSE, FALSE);
2620 G_READ_UNLOCK (&type_rw_lock);
2626 g_type_check_instance_cast (GTypeInstance *type_instance,
2631 if (type_instance->g_class)
2633 TypeNode *node, *iface;
2634 gboolean is_instantiatable, check;
2636 G_READ_LOCK (&type_rw_lock);
2637 node = lookup_type_node_L (type_instance->g_class->g_type);
2638 is_instantiatable = node && node->is_instantiatable;
2639 iface = lookup_type_node_L (iface_type);
2640 check = is_instantiatable && iface && type_node_is_a_L (node, iface, TRUE, FALSE);
2641 G_READ_UNLOCK (&type_rw_lock);
2643 return type_instance;
2645 if (is_instantiatable)
2646 g_warning ("invalid cast from `%s' to `%s'",
2647 type_descriptive_name_U (type_instance->g_class->g_type),
2648 type_descriptive_name_U (iface_type));
2650 g_warning ("invalid uninstantiatable type `%s' in cast to `%s'",
2651 type_descriptive_name_U (type_instance->g_class->g_type),
2652 type_descriptive_name_U (iface_type));
2655 g_warning ("invalid unclassed pointer in cast to `%s'",
2656 type_descriptive_name_U (iface_type));
2659 g_warning ("invalid cast from (NULL) pointer to `%s'",
2660 type_descriptive_name_U (iface_type));
2662 return type_instance;
2666 g_type_check_class_cast (GTypeClass *type_class,
2671 TypeNode *node, *iface;
2672 gboolean is_classed, check;
2674 G_READ_LOCK (&type_rw_lock);
2675 node = lookup_type_node_L (type_class->g_type);
2676 is_classed = node && node->is_classed;
2677 iface = lookup_type_node_L (is_a_type);
2678 check = is_classed && iface && type_node_is_a_L (node, iface, FALSE, FALSE);
2679 G_READ_UNLOCK (&type_rw_lock);
2684 g_warning ("invalid class cast from `%s' to `%s'",
2685 type_descriptive_name_U (type_class->g_type),
2686 type_descriptive_name_U (is_a_type));
2688 g_warning ("invalid unclassed type `%s' in class cast to `%s'",
2689 type_descriptive_name_U (type_class->g_type),
2690 type_descriptive_name_U (is_a_type));
2693 g_warning ("invalid class cast from (NULL) pointer to `%s'",
2694 type_descriptive_name_U (is_a_type));
2699 g_type_check_instance (GTypeInstance *type_instance)
2701 /* this function is just here to make the signal system
2702 * conveniently elaborated on instance checks
2706 if (type_instance->g_class)
2709 gboolean is_instantiatable;
2711 G_READ_LOCK (&type_rw_lock);
2712 node = lookup_type_node_L (type_instance->g_class->g_type);
2713 is_instantiatable = node && node->is_instantiatable;
2714 G_READ_UNLOCK (&type_rw_lock);
2715 if (is_instantiatable)
2718 g_warning ("instance of invalid non-instantiatable type `%s'",
2719 type_descriptive_name_U (type_instance->g_class->g_type));
2722 g_warning ("instance with invalid (NULL) class pointer");
2725 g_warning ("invalid (NULL) pointer instance");
2730 static inline gboolean
2731 type_check_is_value_type_U (GType type)
2733 GTypeFlags tflags = G_TYPE_FLAG_VALUE_ABSTRACT;
2736 G_READ_LOCK (&type_rw_lock);
2738 node = lookup_type_node_L (type);
2741 if (node->data && node->data->common.ref_count > 0 &&
2742 node->data->common.value_table->value_init)
2743 tflags = GPOINTER_TO_UINT (type_get_qdata_L (node, static_quark_type_flags));
2744 else if (NODE_IS_IFACE (node))
2748 for (i = 0; i < IFACE_NODE_N_PREREQUISITES (node); i++)
2750 GType prtype = IFACE_NODE_PREREQUISITES (node)[i];
2751 TypeNode *prnode = lookup_type_node_L (prtype);
2753 if (prnode->is_instantiatable)
2761 G_READ_UNLOCK (&type_rw_lock);
2763 return !(tflags & G_TYPE_FLAG_VALUE_ABSTRACT);
2767 g_type_check_is_value_type (GType type)
2769 return type_check_is_value_type_U (type);
2773 g_type_check_value (GValue *value)
2775 return value && type_check_is_value_type_U (value->g_type);
2779 g_type_check_value_holds (GValue *value,
2782 return value && type_check_is_value_type_U (value->g_type) && g_type_is_a (value->g_type, type);
2786 g_type_value_table_peek (GType type)
2789 GTypeValueTable *vtable;
2791 G_READ_LOCK (&type_rw_lock);
2793 node = lookup_type_node_L (type);
2796 g_warning (G_STRLOC ": type id `%u' is invalid", type);
2797 G_READ_UNLOCK (&type_rw_lock);
2800 if (!node->data || node->data->common.ref_count < 1)
2802 g_warning ("can't peek value table for type `%s' which is not currently referenced",
2803 type_descriptive_name_L (type));
2804 G_READ_UNLOCK (&type_rw_lock);
2807 if (node->data->common.value_table->value_init)
2808 vtable = node->data->common.value_table;
2809 else if (NODE_IS_IFACE (node))
2813 for (i = 0; i < IFACE_NODE_N_PREREQUISITES (node); i++)
2815 GType prtype = IFACE_NODE_PREREQUISITES (node)[i];
2816 TypeNode *prnode = lookup_type_node_L (prtype);
2818 if (prnode->is_instantiatable)
2821 goto restart_table_peek;
2828 G_READ_UNLOCK (&type_rw_lock);
2833 G_CONST_RETURN gchar*
2834 g_type_name_from_instance (GTypeInstance *instance)
2837 return "<NULL-instance>";
2839 return g_type_name_from_class (instance->g_class);
2842 G_CONST_RETURN gchar*
2843 g_type_name_from_class (GTypeClass *g_class)
2846 return "<NULL-class>";
2848 return g_type_name (g_class->g_type);
2852 /* --- foreign prototypes --- */
2853 extern void g_value_types_init (void); /* sync with gvaluetypes.c */
2854 extern void g_enum_types_init (void); /* sync with genums.c */
2855 extern void g_param_type_init (void); /* sync with gparam.c */
2856 extern void g_boxed_type_init (void); /* sync with gboxed.c */
2857 extern void g_object_type_init (void); /* sync with gobject.c */
2858 extern void g_param_spec_types_init (void); /* sync with gparamspecs.c */
2859 extern void g_value_transforms_init (void); /* sync with gvaluetransform.c */
2860 extern void g_signal_init (void); /* sync with gsignal.c */
2863 /* --- initialization --- */
2865 g_type_init_with_debug_flags (GTypeDebugFlags debug_flags)
2867 G_LOCK_DEFINE_STATIC (type_init_lock);
2868 const gchar *env_string;
2873 G_LOCK (type_init_lock);
2875 G_WRITE_LOCK (&type_rw_lock);
2877 if (static_quark_type_flags)
2879 G_WRITE_UNLOCK (&type_rw_lock);
2880 G_UNLOCK (type_init_lock);
2884 /* setup GRuntime wide debugging flags */
2885 _g_type_debug_flags = debug_flags & G_TYPE_DEBUG_MASK;
2886 env_string = g_getenv ("GRUNTIME_DEBUG");
2887 if (env_string != NULL)
2889 static GDebugKey debug_keys[] = {
2890 { "objects", G_TYPE_DEBUG_OBJECTS },
2891 { "signals", G_TYPE_DEBUG_SIGNALS },
2894 _g_type_debug_flags |= g_parse_debug_string (env_string,
2896 sizeof (debug_keys) / sizeof (debug_keys[0]));
2901 static_quark_type_flags = g_quark_from_static_string ("-g-type-private--GTypeFlags");
2902 static_quark_iface_holder = g_quark_from_static_string ("-g-type-private--IFaceHolder");
2903 static_quark_dependants_array = g_quark_from_static_string ("-g-type-private--dependants-array");
2905 /* type qname hash table */
2906 static_type_nodes_ht = g_hash_table_new (g_direct_hash, g_direct_equal);
2908 /* invalid type G_TYPE_INVALID (0)
2910 static_fundamental_type_nodes[0] = NULL;
2912 /* void type G_TYPE_NONE
2914 node = type_node_fundamental_new_W (G_TYPE_NONE, "void", 0);
2915 type = NODE_TYPE (node);
2916 g_assert (type == G_TYPE_NONE);
2918 /* interface fundamental type G_TYPE_INTERFACE (!classed)
2920 memset (&info, 0, sizeof (info));
2921 node = type_node_fundamental_new_W (G_TYPE_INTERFACE, "GInterface", G_TYPE_FLAG_DERIVABLE);
2922 type = NODE_TYPE (node);
2923 type_data_make_W (node, &info, NULL);
2924 g_assert (type == G_TYPE_INTERFACE);
2926 G_WRITE_UNLOCK (&type_rw_lock);
2928 /* G_TYPE_TYPE_PLUGIN
2930 g_type_plugin_get_type ();
2932 /* G_TYPE_* value types
2934 g_value_types_init ();
2936 /* G_TYPE_ENUM & G_TYPE_FLAGS
2938 g_enum_types_init ();
2942 g_boxed_type_init ();
2946 g_param_type_init ();
2950 g_object_type_init ();
2952 /* G_TYPE_PARAM_* pspec types
2954 g_param_spec_types_init ();
2956 /* Value Transformations
2958 g_value_transforms_init ();
2964 G_UNLOCK (type_init_lock);
2970 g_type_init_with_debug_flags (0);