1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 2000 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.
19 * this code is based on the original GtkSignal implementation
20 * for the Gtk+ library by Peter Mattis <petm@xcf.berkeley.edu>
28 #include "gbsearcharray.h"
29 #include "gvaluecollector.h"
33 /* pre allocation configurations
35 #define MAX_STACK_VALUES (16)
36 #define BSA_PRE_ALLOC (20)
37 #define HANDLER_PRE_ALLOC (48)
38 #define EMISSION_PRE_ALLOC (16)
40 #define REPORT_BUG "please report occourance circumstances to gtk-devel-list@gnome.org"
42 #define IF_DEBUG(debug_type, cond) if ((_g_type_debug_flags & G_TYPE_DEBUG_ ## debug_type) || cond)
43 static volatile gpointer *g_trace_instance_signals = NULL;
44 static volatile gpointer *g_trap_instance_signals = NULL;
45 #endif /* G_ENABLE_DEBUG */
48 /* --- generic allocation --- */
49 /* we special case allocations generically by replacing
50 * these functions with more speed/memory aware variants
52 #ifndef DISABLE_MEM_POOLS
53 static inline gpointer
54 g_generic_node_alloc (GTrashStack **trash_stack_p,
56 guint nodes_pre_alloc)
58 gpointer node = g_trash_stack_pop (trash_stack_p);
64 nodes_pre_alloc = MAX (nodes_pre_alloc, 1);
65 block = g_malloc (sizeof_node * nodes_pre_alloc);
66 while (--nodes_pre_alloc)
68 g_trash_stack_push (trash_stack_p, block);
76 #define g_generic_node_free(trash_stack_p, node) g_trash_stack_push (trash_stack_p, node)
77 #else /* !DISABLE_MEM_POOLS */
78 #define g_generic_node_alloc(t,sizeof_node,p) g_malloc (sizeof_node)
79 #define g_generic_node_free(t,node) g_free (node)
80 #endif /* !DISABLE_MEM_POOLS */
83 /* --- typedefs --- */
84 typedef struct _SignalNode SignalNode;
85 typedef struct _SignalKey SignalKey;
86 typedef struct _Emission Emission;
87 typedef struct _Handler Handler;
88 typedef struct _HandlerList HandlerList;
89 typedef struct _HandlerMatch HandlerMatch;
99 /* --- prototypes --- */
100 static inline guint signal_id_lookup (GQuark quark,
102 static void signal_destroy_R (SignalNode *signal_node);
103 static inline HandlerList* handler_list_ensure (guint signal_id,
105 static inline HandlerList* handler_list_lookup (guint signal_id,
107 static inline Handler* handler_new (gboolean after);
108 static void handler_insert (guint signal_id,
111 static Handler* handler_lookup (gpointer instance,
114 static inline HandlerMatch* handler_match_prepend (HandlerMatch *list,
117 static inline HandlerMatch* handler_match_free1_R (HandlerMatch *node,
119 static HandlerMatch* handlers_find (gpointer instance,
120 GSignalMatchType mask,
126 gboolean one_and_only);
127 static inline void handler_ref (Handler *handler);
128 static inline void handler_unref_R (guint signal_id,
131 static inline void emission_push (Emission **emission_list_p,
135 EmissionState *state_p);
136 static inline void emission_pop (Emission **emission_list_p,
137 EmissionState *state_p);
138 static inline Emission* emission_find (Emission *emission_list,
142 static gboolean signal_emit_R (SignalNode *node,
145 GValue *return_value,
146 const GValue *instance_and_params);
149 /* --- structures --- */
152 /* permanent portion */
158 /* reinitializable portion */
161 GType *param_types; /* mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag */
162 GType return_type; /* mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag */
163 GClosure *class_closure;
164 GSignalAccumulator accumulator;
165 GSignalCMarshaller c_marshaller;
166 GHookList *emission_hooks;
182 EmissionState *state_p;
196 guint ref_count : 16;
197 #define HANDLER_MAX_REF_COUNT (1 << 16)
198 guint block_count : 12;
199 #define HANDLER_MAX_BLOCK_COUNT (1 << 12)
214 /* --- variables --- */
215 static GBSearchArray g_signal_key_bsa = { NULL, 0, 0, 0, NULL };
216 static GHashTable *g_handler_list_bsa_ht = NULL;
217 static Emission *g_recursive_emissions = NULL;
218 static Emission *g_restart_emissions = NULL;
219 static GTrashStack *g_bsa_ts = NULL;
220 static GTrashStack *g_handler_ts = NULL;
221 static GTrashStack *g_emission_ts = NULL;
222 G_LOCK_DEFINE_STATIC (g_signal_mutex);
225 /* --- signal nodes --- */
226 static guint g_n_signal_nodes = 0;
227 static SignalNode **g_signal_nodes = NULL;
229 static inline SignalNode*
230 LOOKUP_SIGNAL_NODE (register guint signal_id)
232 if (signal_id < g_n_signal_nodes)
233 return g_signal_nodes[signal_id];
239 /* --- functions --- */
241 signal_id_lookup (GQuark quark,
244 GType *ifaces, type = itype;
250 /* try looking up signals for this type and its anchestors */
253 SignalKey *signal_key;
256 signal_key = g_bsearch_array_lookup (&g_signal_key_bsa, &key);
259 return signal_key->signal_id;
261 type = g_type_parent (type);
265 /* no luck, try interfaces it exports */
266 ifaces = g_type_interfaces (itype, &n_ifaces);
269 SignalKey *signal_key;
271 key.itype = ifaces[n_ifaces];
272 signal_key = g_bsearch_array_lookup (&g_signal_key_bsa, &key);
277 return signal_key->signal_id;
286 handler_lists_cmp (gconstpointer node1,
289 const HandlerList *hlist1 = node1, *hlist2 = node2;
291 return G_BSEARCH_ARRAY_CMP (hlist1->signal_id, hlist2->signal_id);
294 static inline HandlerList*
295 handler_list_ensure (guint signal_id,
298 GBSearchArray *hlbsa = g_hash_table_lookup (g_handler_list_bsa_ht, instance);
303 hlbsa = g_generic_node_alloc (&g_bsa_ts,
304 sizeof (GBSearchArray),
306 hlbsa->cmp_func = handler_lists_cmp;
307 hlbsa->sizeof_node = sizeof (HandlerList);
308 hlbsa->flags = G_BSEARCH_DEFER_SHRINK;
311 g_hash_table_insert (g_handler_list_bsa_ht, instance, hlbsa);
313 key.signal_id = signal_id;
316 return g_bsearch_array_insert (hlbsa, &key, FALSE);
319 static inline HandlerList*
320 handler_list_lookup (guint signal_id,
323 GBSearchArray *hlbsa = g_hash_table_lookup (g_handler_list_bsa_ht, instance);
326 key.signal_id = signal_id;
328 return hlbsa ? g_bsearch_array_lookup (hlbsa, &key) : NULL;
332 handler_lookup (gpointer instance,
336 GBSearchArray *hlbsa = g_hash_table_lookup (g_handler_list_bsa_ht, instance);
342 for (i = 0; i < hlbsa->n_nodes; i++)
344 HandlerList *hlist = g_bsearch_array_get_nth (hlbsa, i);
347 for (handler = hlist->handlers; handler; handler = handler->next)
348 if (handler->id == handler_id)
351 *signal_id_p = hlist->signal_id;
361 static inline HandlerMatch*
362 handler_match_prepend (HandlerMatch *list,
368 /* yeah, we could use our own memchunk here, introducing yet more
369 * rarely used cached nodes and extra allocation overhead.
370 * instead, we use GList* nodes, since they are exactly the size
371 * we need and are already cached. g_signal_init() asserts this.
373 node = (HandlerMatch*) g_list_alloc ();
374 node->handler = handler;
376 node->d.signal_id = signal_id;
377 handler_ref (handler);
381 static inline HandlerMatch*
382 handler_match_free1_R (HandlerMatch *node,
385 HandlerMatch *next = node->next;
387 handler_unref_R (node->d.signal_id, instance, node->handler);
388 g_list_free_1 ((GList*) node);
394 handlers_find (gpointer instance,
395 GSignalMatchType mask,
401 gboolean one_and_only)
403 HandlerMatch *mlist = NULL;
405 if (mask & G_SIGNAL_MATCH_ID)
407 HandlerList *hlist = handler_list_lookup (signal_id, instance);
409 SignalNode *node = NULL;
411 if (mask & G_SIGNAL_MATCH_FUNC)
413 node = LOOKUP_SIGNAL_NODE (signal_id);
414 if (!node || !node->c_marshaller)
419 for (handler = hlist ? hlist->handlers : NULL; handler; handler = handler->next)
421 ((mask & G_SIGNAL_MATCH_DETAIL) || handler->detail == detail) &&
422 ((mask & G_SIGNAL_MATCH_CLOSURE) || handler->closure == closure) &&
423 ((mask & G_SIGNAL_MATCH_DATA) || handler->closure->data == data) &&
424 ((mask & G_SIGNAL_MATCH_UNBLOCKED) || handler->block_count == 0) &&
425 ((mask & G_SIGNAL_MATCH_FUNC) || (handler->closure->marshal == node->c_marshaller &&
426 handler->closure->meta_marshal == 0 &&
427 ((GCClosure*) handler->closure)->callback == func)))
429 mlist = handler_match_prepend (mlist, handler, signal_id);
436 GBSearchArray *hlbsa = g_hash_table_lookup (g_handler_list_bsa_ht, instance);
443 for (i = 0; i < hlbsa->n_nodes; i++)
445 HandlerList *hlist = g_bsearch_array_get_nth (hlbsa, i);
446 SignalNode *node = NULL;
449 if (!(mask & G_SIGNAL_MATCH_FUNC))
451 node = LOOKUP_SIGNAL_NODE (hlist->signal_id);
452 if (!node->c_marshaller)
456 for (handler = hlist->handlers; handler; handler = handler->next)
458 ((mask & G_SIGNAL_MATCH_DETAIL) || handler->detail == detail) &&
459 ((mask & G_SIGNAL_MATCH_CLOSURE) || handler->closure == closure) &&
460 ((mask & G_SIGNAL_MATCH_DATA) || handler->closure->data == data) &&
461 ((mask & G_SIGNAL_MATCH_UNBLOCKED) || handler->block_count == 0) &&
462 ((mask & G_SIGNAL_MATCH_FUNC) || (handler->closure->marshal == node->c_marshaller &&
463 handler->closure->meta_marshal == 0 &&
464 ((GCClosure*) handler->closure)->callback == func)))
466 mlist = handler_match_prepend (mlist, handler, hlist->signal_id);
477 static inline Handler*
478 handler_new (gboolean after)
480 static guint handler_id = 1;
481 Handler *handler = g_generic_node_alloc (&g_handler_ts,
484 #ifndef G_DISABLE_CHECKS
486 g_error (G_STRLOC ": handler id overflow, %s", REPORT_BUG);
489 handler->id = handler_id++;
490 handler->prev = NULL;
491 handler->next = NULL;
493 handler->ref_count = 1;
494 handler->block_count = 0;
495 handler->after = after != FALSE;
496 handler->closure = NULL;
502 handler_ref (Handler *handler)
504 g_return_if_fail (handler->ref_count > 0);
506 #ifndef G_DISABLE_CHECKS
507 if (handler->ref_count >= HANDLER_MAX_REF_COUNT - 1)
508 g_error (G_STRLOC ": handler ref_count overflow, %s", REPORT_BUG);
511 handler->ref_count += 1;
515 handler_unref_R (guint signal_id,
519 g_return_if_fail (handler->ref_count > 0);
521 handler->ref_count -= 1;
522 if (!handler->ref_count)
525 handler->next->prev = handler->prev;
526 if (handler->prev) /* watch out for g_signal_handlers_destroy()! */
527 handler->prev->next = handler->next;
530 HandlerList *hlist = handler_list_lookup (signal_id, instance);
532 hlist->handlers = handler->next;
534 G_UNLOCK (g_signal_mutex);
535 g_closure_unref (handler->closure);
536 G_LOCK (g_signal_mutex);
537 g_generic_node_free (&g_handler_ts, handler);
542 handler_insert (guint signal_id,
548 g_assert (handler->prev == NULL && handler->next == NULL); /* paranoid */
550 hlist = handler_list_ensure (signal_id, instance);
551 if (!hlist->handlers)
552 hlist->handlers = handler;
553 else if (hlist->handlers->after && !handler->after)
555 handler->next = hlist->handlers;
556 hlist->handlers->prev = handler;
557 hlist->handlers = handler;
561 Handler *tmp = hlist->handlers;
567 while (tmp->next && !tmp->next->after)
570 tmp->next->prev = handler;
571 handler->next = tmp->next;
578 emission_push (Emission **emission_list_p,
582 EmissionState *state_p)
584 Emission *emission = g_generic_node_alloc (&g_emission_ts,
587 emission->next = *emission_list_p;
588 emission->signal_id = signal_id;
589 emission->detail = detail;
590 emission->instance = instance;
591 emission->state_p = state_p;
592 *emission_list_p = emission;
596 emission_pop (Emission **emission_list_p,
597 EmissionState *state_p)
599 Emission **loc = emission_list_p, *emission = *loc;
601 while (emission->state_p != state_p)
603 loc = &emission->next;
606 *loc = emission->next;
607 g_generic_node_free (&g_emission_ts, emission);
610 static inline Emission*
611 emission_find (Emission *emission_list,
618 for (emission = emission_list; emission; emission = emission->next)
619 if (emission->instance == instance &&
620 emission->signal_id == signal_id &&
621 emission->detail == detail)
627 signal_key_cmp (gconstpointer node1,
630 const SignalKey *key1 = node1, *key2 = node2;
632 if (key1->itype == key2->itype)
633 return G_BSEARCH_ARRAY_CMP (key1->quark, key2->quark);
635 return G_BSEARCH_ARRAY_CMP (key1->itype, key2->itype);
639 g_signal_init (void) /* sync with gtype.c */
641 G_LOCK (g_signal_mutex);
642 if (!g_n_signal_nodes)
644 /* handler_id_node_prepend() requires this */
645 g_assert (sizeof (GList) == sizeof (HandlerMatch));
647 /* setup signal key array */
648 g_signal_key_bsa.cmp_func = signal_key_cmp;
649 g_signal_key_bsa.sizeof_node = sizeof (SignalKey);
650 g_signal_key_bsa.flags = G_BSEARCH_ALIGN_POWER2; /* alloc-only */
652 /* setup handler list binary searchable array hash table (in german, that'd be one word ;) */
653 g_handler_list_bsa_ht = g_hash_table_new (g_direct_hash, NULL);
655 /* invalid (0) signal_id */
656 g_n_signal_nodes = 1;
657 g_signal_nodes = g_renew (SignalNode*, g_signal_nodes, g_n_signal_nodes);
658 g_signal_nodes[0] = NULL;
660 G_UNLOCK (g_signal_mutex);
664 _g_signals_destroy (GType itype)
668 G_LOCK (g_signal_mutex);
669 for (i = 1; i < g_n_signal_nodes; i++)
671 SignalNode *node = g_signal_nodes[i];
673 if (node->itype == itype)
676 g_warning (G_STRLOC ": signal \"%s\" of type `%s' already destroyed",
678 g_type_name (node->itype));
680 signal_destroy_R (node);
683 G_UNLOCK (g_signal_mutex);
687 g_signal_stop_emission (gpointer instance,
693 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
694 g_return_if_fail (signal_id > 0);
696 G_LOCK (g_signal_mutex);
697 node = LOOKUP_SIGNAL_NODE (signal_id);
698 if (node && detail && !(node->flags & G_SIGNAL_DETAILED))
700 g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
701 G_UNLOCK (g_signal_mutex);
704 if (node && g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
706 Emission *emission_list = node->flags & G_SIGNAL_NO_RECURSE ? g_restart_emissions : g_recursive_emissions;
707 Emission *emission = emission_find (emission_list, signal_id, detail, instance);
711 if (*emission->state_p == EMISSION_HOOK)
712 g_warning (G_STRLOC ": emission of signal \"%s\" for instance `%p' cannot be stopped from emission hook",
713 node->name, instance);
714 else if (*emission->state_p == EMISSION_RUN)
715 *emission->state_p = EMISSION_STOP;
718 g_warning (G_STRLOC ": no emission of signal \"%s\" to stop for instance `%p'",
719 node->name, instance);
722 g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
723 G_UNLOCK (g_signal_mutex);
727 signal_parse_name (const gchar *name,
730 gboolean force_quark)
732 const gchar *colon = strchr (name, ':');
737 signal_id = signal_id_lookup (g_quark_try_string (name), itype);
738 if (signal_id && detail_p)
741 else if (colon[1] == ':')
744 guint l = colon - name;
748 memcpy (buffer, name, l);
750 signal_id = signal_id_lookup (g_quark_try_string (buffer), itype);
754 gchar *signal = g_new (gchar, l + 1);
756 memcpy (signal, name, l);
758 signal_id = signal_id_lookup (g_quark_try_string (signal), itype);
762 if (signal_id && detail_p)
763 *detail_p = colon[2] ? (force_quark ? g_quark_from_string : g_quark_try_string) (colon + 2) : 0;
771 g_signal_parse_name (const gchar *detailed_signal,
775 gboolean force_detail_quark)
780 g_return_val_if_fail (detailed_signal != NULL, FALSE);
781 g_return_val_if_fail (G_TYPE_IS_INSTANTIATABLE (itype) || G_TYPE_IS_INTERFACE (itype), FALSE);
783 G_LOCK (g_signal_mutex);
784 signal_id = signal_parse_name (detailed_signal, itype, &detail, force_detail_quark);
785 G_UNLOCK (g_signal_mutex);
790 *signal_id_p = signal_id;
801 g_signal_lookup (const gchar *name,
806 g_return_val_if_fail (name != NULL, 0);
807 g_return_val_if_fail (G_TYPE_IS_INSTANTIATABLE (itype) || G_TYPE_IS_INTERFACE (itype), 0);
809 G_LOCK (g_signal_mutex);
810 signal_id = signal_id_lookup (g_quark_try_string (name), itype);
811 G_UNLOCK (g_signal_mutex);
817 g_signal_name (guint signal_id)
822 G_LOCK (g_signal_mutex);
823 node = LOOKUP_SIGNAL_NODE (signal_id);
824 name = node ? node->name : NULL;
825 G_UNLOCK (g_signal_mutex);
831 g_signal_query (guint signal_id,
836 g_return_if_fail (query != NULL);
838 G_LOCK (g_signal_mutex);
839 node = LOOKUP_SIGNAL_NODE (signal_id);
840 if (!node || node->destroyed)
841 query->signal_id = 0;
844 query->signal_id = node->signal_id;
845 query->signal_name = node->name;
846 query->itype = node->itype;
847 query->signal_flags = node->flags;
848 query->return_type = node->return_type;
849 query->n_params = node->n_params;
850 query->param_types = node->param_types;
852 G_UNLOCK (g_signal_mutex);
856 g_signal_list_ids (GType itype,
864 g_return_val_if_fail (G_TYPE_IS_INSTANTIATABLE (itype) || G_TYPE_IS_INTERFACE (itype), NULL);
865 g_return_val_if_fail (n_ids != NULL, NULL);
867 G_LOCK (g_signal_mutex);
869 keys = g_signal_key_bsa.nodes;
870 n_nodes = g_signal_key_bsa.n_nodes;
871 result = g_array_new (FALSE, FALSE, sizeof (guint));
873 for (i = 0; i < n_nodes; i++)
874 if (keys[i].itype == itype)
876 gchar *name = g_quark_to_string (keys[i].quark);
878 /* Signal names with "_" in them are aliases to the same
879 * name with "-" instead of "_".
881 if (!strchr (name, '_'))
882 g_array_append_val (result, keys[i].signal_id);
885 *n_ids = result->len;
887 G_UNLOCK (g_signal_mutex);
889 return (guint *) g_array_free (result, FALSE);
893 g_signal_new_valist (const gchar *signal_name,
895 GSignalFlags signal_flags,
896 GClosure *class_closure,
897 GSignalAccumulator accumulator,
898 GSignalCMarshaller c_marshaller,
909 param_types = g_new (GType, n_params);
911 for (i = 0; i < n_params; i++)
912 param_types[i] = va_arg (args, GType);
917 signal_id = g_signal_newv (signal_name, itype, signal_flags,
918 class_closure, accumulator, c_marshaller,
919 return_type, n_params, param_types);
920 g_free (param_types);
926 g_signal_newc (const gchar *signal_name,
928 GSignalFlags signal_flags,
930 GSignalAccumulator accumulator,
931 GSignalCMarshaller c_marshaller,
939 g_return_val_if_fail (signal_name != NULL, 0);
941 va_start (args, n_params);
943 signal_id = g_signal_new_valist (signal_name, itype, signal_flags,
944 g_signal_type_cclosure_new (itype, class_offset),
945 accumulator, c_marshaller,
946 return_type, n_params, args);
954 g_signal_newv (const gchar *signal_name,
956 GSignalFlags signal_flags,
957 GClosure *class_closure,
958 GSignalAccumulator accumulator,
959 GSignalCMarshaller c_marshaller,
968 g_return_val_if_fail (signal_name != NULL, 0);
969 g_return_val_if_fail (G_TYPE_IS_INSTANTIATABLE (itype) || G_TYPE_IS_INTERFACE (itype), 0);
971 g_return_val_if_fail (param_types != NULL, 0);
972 if (return_type != G_TYPE_NONE)
973 g_return_val_if_fail (accumulator == NULL, 0);
975 name = g_strdup (signal_name);
976 g_strdelimit (name, G_STR_DELIMITERS ":^", '_'); // FIXME do character checks like for types
978 G_LOCK (g_signal_mutex);
980 signal_id = signal_id_lookup (g_quark_try_string (name), itype);
981 node = LOOKUP_SIGNAL_NODE (signal_id);
982 if (node && !node->destroyed)
984 g_warning (G_STRLOC ": signal \"%s\" already exists in the `%s' %s",
986 g_type_name (node->itype),
987 G_TYPE_IS_INTERFACE (node->itype) ? "interface" : "class ancestry");
989 G_UNLOCK (g_signal_mutex);
992 if (node && node->itype != itype)
994 g_warning (G_STRLOC ": signal \"%s\" for type `%s' was previously created for type `%s'",
997 g_type_name (node->itype));
999 G_UNLOCK (g_signal_mutex);
1002 for (i = 0; i < n_params; i++)
1003 if (!G_TYPE_IS_VALUE (param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE) ||
1004 (param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE) == G_TYPE_ENUM ||
1005 (param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE) == G_TYPE_FLAGS) /* FIXME: kludge */
1007 g_warning (G_STRLOC ": parameter %d of type `%s' for signal \"%s::%s\" is not a value type",
1008 i + 1, g_type_name (param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE), g_type_name (itype), name);
1010 G_UNLOCK (g_signal_mutex);
1013 if (return_type != G_TYPE_NONE && !G_TYPE_IS_VALUE (return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE))
1015 g_warning (G_STRLOC ": return value of type `%s' for signal \"%s::%s\" is not a value type",
1016 g_type_name (return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE), g_type_name (itype), name);
1018 G_UNLOCK (g_signal_mutex);
1022 /* setup permanent portion of signal node */
1027 signal_id = g_n_signal_nodes++;
1028 node = g_new (SignalNode, 1);
1029 node->signal_id = signal_id;
1030 g_signal_nodes = g_renew (SignalNode*, g_signal_nodes, g_n_signal_nodes);
1031 g_signal_nodes[signal_id] = node;
1032 node->itype = itype;
1035 key.quark = g_quark_from_string (node->name);
1036 key.signal_id = signal_id;
1037 g_bsearch_array_insert (&g_signal_key_bsa, &key, FALSE);
1038 g_strdelimit (node->name, "_", '-');
1039 key.quark = g_quark_from_static_string (node->name);
1040 g_bsearch_array_insert (&g_signal_key_bsa, &key, FALSE);
1042 node->destroyed = FALSE;
1044 /* setup reinitializable portion */
1045 node->flags = signal_flags & G_SIGNAL_FLAGS_MASK;
1046 node->n_params = n_params;
1047 node->param_types = g_memdup (param_types, sizeof (GType) * n_params);
1048 node->return_type = return_type;
1049 node->class_closure = class_closure ? g_closure_ref (class_closure) : NULL;
1051 g_closure_sink (class_closure);
1052 node->accumulator = accumulator;
1053 node->c_marshaller = c_marshaller;
1054 node->emission_hooks = NULL;
1055 if (node->c_marshaller && class_closure && G_CLOSURE_NEEDS_MARSHAL (class_closure))
1056 g_closure_set_marshal (class_closure, node->c_marshaller);
1058 G_UNLOCK (g_signal_mutex);
1063 signal_destroy_R (SignalNode *signal_node)
1065 SignalNode node = *signal_node;
1067 signal_node->destroyed = TRUE;
1069 /* reentrancy caution, zero out real contents first */
1070 signal_node->n_params = 0;
1071 signal_node->param_types = NULL;
1072 signal_node->return_type = 0;
1073 signal_node->class_closure = NULL;
1074 signal_node->accumulator = NULL;
1075 signal_node->c_marshaller = NULL;
1076 signal_node->emission_hooks = NULL;
1078 #ifdef G_ENABLE_DEBUG
1079 /* check current emissions */
1083 for (emission = (node.flags & G_SIGNAL_NO_RECURSE) ? g_restart_emissions : g_recursive_emissions;
1084 emission; emission = emission->next)
1085 if (emission->signal_id == node.signal_id)
1086 g_critical (G_STRLOC ": signal \"%s\" being destroyed is currently in emission (instance `%p')",
1087 node.name, emission->instance);
1091 /* free contents that need to
1093 G_UNLOCK (g_signal_mutex);
1094 g_free (node.param_types);
1095 g_closure_unref (node.class_closure);
1096 if (node.emission_hooks)
1098 g_hook_list_clear (node.emission_hooks);
1099 g_free (node.emission_hooks);
1101 G_LOCK (g_signal_mutex);
1105 g_signal_connect_closure_by_id (gpointer instance,
1112 guint handler_id = 0;
1114 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), 0);
1115 g_return_val_if_fail (signal_id > 0, 0);
1116 g_return_val_if_fail (closure != NULL, 0);
1118 G_LOCK (g_signal_mutex);
1119 node = LOOKUP_SIGNAL_NODE (signal_id);
1122 if (detail && !(node->flags & G_SIGNAL_DETAILED))
1123 g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
1124 else if (!g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
1125 g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
1128 Handler *handler = handler_new (after);
1130 handler_id = handler->id;
1131 handler->detail = detail;
1132 handler->closure = g_closure_ref (closure);
1133 g_closure_sink (closure);
1134 handler_insert (signal_id, instance, handler);
1135 if (node->c_marshaller && G_CLOSURE_NEEDS_MARSHAL (closure))
1136 g_closure_set_marshal (closure, node->c_marshaller);
1140 g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
1141 G_UNLOCK (g_signal_mutex);
1147 g_signal_connect_closure (gpointer instance,
1148 const gchar *detailed_signal,
1152 guint signal_id, handler_id = 0;
1156 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), 0);
1157 g_return_val_if_fail (detailed_signal != NULL, 0);
1158 g_return_val_if_fail (closure != NULL, 0);
1160 G_LOCK (g_signal_mutex);
1161 itype = G_TYPE_FROM_INSTANCE (instance);
1162 signal_id = signal_parse_name (detailed_signal, itype, &detail, TRUE);
1165 SignalNode *node = LOOKUP_SIGNAL_NODE (signal_id);
1167 if (detail && !(node->flags & G_SIGNAL_DETAILED))
1168 g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
1169 else if (!g_type_is_a (itype, node->itype))
1170 g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
1173 Handler *handler = handler_new (after);
1175 handler_id = handler->id;
1176 handler->detail = detail;
1177 handler->closure = g_closure_ref (closure);
1178 g_closure_sink (closure);
1179 handler_insert (signal_id, instance, handler);
1180 if (node->c_marshaller && G_CLOSURE_NEEDS_MARSHAL (handler->closure))
1181 g_closure_set_marshal (handler->closure, node->c_marshaller);
1185 g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
1186 G_UNLOCK (g_signal_mutex);
1192 g_signal_connect_data (gpointer instance,
1193 const gchar *detailed_signal,
1194 GCallback c_handler,
1196 GClosureNotify destroy_data,
1200 guint signal_id, handler_id = 0;
1204 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), 0);
1205 g_return_val_if_fail (detailed_signal != NULL, 0);
1206 g_return_val_if_fail (c_handler != NULL, 0);
1208 G_LOCK (g_signal_mutex);
1209 itype = G_TYPE_FROM_INSTANCE (instance);
1210 signal_id = signal_parse_name (detailed_signal, itype, &detail, TRUE);
1213 SignalNode *node = LOOKUP_SIGNAL_NODE (signal_id);
1215 if (detail && !(node->flags & G_SIGNAL_DETAILED))
1216 g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
1217 else if (!g_type_is_a (itype, node->itype))
1218 g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
1221 Handler *handler = handler_new (after);
1223 handler_id = handler->id;
1224 handler->detail = detail;
1225 handler->closure = g_closure_ref ((swapped ? g_cclosure_new_swap : g_cclosure_new) (c_handler, data, destroy_data));
1226 g_closure_sink (handler->closure);
1227 handler_insert (signal_id, instance, handler);
1228 if (node->c_marshaller && G_CLOSURE_NEEDS_MARSHAL (handler->closure))
1229 g_closure_set_marshal (handler->closure, node->c_marshaller);
1233 g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
1234 G_UNLOCK (g_signal_mutex);
1240 g_signal_handler_block (gpointer instance,
1245 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1246 g_return_if_fail (handler_id > 0);
1248 G_LOCK (g_signal_mutex);
1249 handler = handler_lookup (instance, handler_id, NULL);
1252 #ifndef G_DISABLE_CHECKS
1253 if (handler->block_count >= HANDLER_MAX_BLOCK_COUNT - 1)
1254 g_error (G_STRLOC ": handler block_count overflow, %s", REPORT_BUG);
1257 handler->block_count += 1;
1260 g_warning ("%s: instance `%p' has no handler with id `%u'", G_STRLOC, instance, handler_id);
1261 G_UNLOCK (g_signal_mutex);
1265 g_signal_handler_unblock (gpointer instance,
1270 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1271 g_return_if_fail (handler_id > 0);
1273 G_LOCK (g_signal_mutex);
1274 handler = handler_lookup (instance, handler_id, NULL);
1277 if (handler->block_count)
1278 handler->block_count -= 1;
1280 g_warning (G_STRLOC ": handler `%u' of instance `%p' is not blocked", handler_id, instance);
1283 g_warning ("%s: instance `%p' has no handler with id `%u'", G_STRLOC, instance, handler_id);
1284 G_UNLOCK (g_signal_mutex);
1288 g_signal_handler_disconnect (gpointer instance,
1294 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1295 g_return_if_fail (handler_id > 0);
1297 G_LOCK (g_signal_mutex);
1298 handler = handler_lookup (instance, handler_id, &signal_id);
1302 handler->block_count = 1;
1303 handler_unref_R (signal_id, instance, handler);
1306 g_warning ("%s: instance `%p' has no handler with id `%u'", G_STRLOC, instance, handler_id);
1307 G_UNLOCK (g_signal_mutex);
1311 g_signal_handlers_destroy (gpointer instance)
1313 GBSearchArray *hlbsa;
1315 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1317 G_LOCK (g_signal_mutex);
1318 hlbsa = g_hash_table_lookup (g_handler_list_bsa_ht, instance);
1323 /* reentrancy caution, delete instance trace first */
1324 g_hash_table_remove (g_handler_list_bsa_ht, instance);
1326 for (i = 0; i < hlbsa->n_nodes; i++)
1328 HandlerList *hlist = g_bsearch_array_get_nth (hlbsa, i);
1329 Handler *handler = hlist->handlers;
1333 Handler *tmp = handler;
1335 handler = tmp->next;
1336 tmp->block_count = 1;
1337 /* cruel unlink, this works because _all_ handlers vanish */
1343 handler_unref_R (0, NULL, tmp);
1347 g_free (hlbsa->nodes);
1348 g_generic_node_free (&g_bsa_ts, hlbsa);
1350 G_UNLOCK (g_signal_mutex);
1354 g_signal_handler_find (gpointer instance,
1355 GSignalMatchType mask,
1362 guint handler_id = 0;
1364 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), 0);
1365 g_return_val_if_fail ((mask & ~G_SIGNAL_MATCH_MASK) == 0, 0);
1367 if (mask & G_SIGNAL_MATCH_MASK)
1369 HandlerMatch *mlist;
1371 G_LOCK (g_signal_mutex);
1372 mlist = handlers_find (instance, mask, signal_id, detail, closure, func, data, TRUE);
1375 handler_id = mlist->handler->id;
1376 handler_match_free1_R (mlist, instance);
1378 G_UNLOCK (g_signal_mutex);
1385 signal_handlers_foreach_matched_R (gpointer instance,
1386 GSignalMatchType mask,
1392 void (*callback) (gpointer instance,
1395 HandlerMatch *mlist;
1396 guint n_handlers = 0;
1398 mlist = handlers_find (instance, mask, signal_id, detail, closure, func, data, FALSE);
1402 G_UNLOCK (g_signal_mutex);
1403 callback (instance, mlist->handler->id);
1404 G_LOCK (g_signal_mutex);
1405 mlist = handler_match_free1_R (mlist, instance);
1412 g_signal_handlers_block_matched (gpointer instance,
1413 GSignalMatchType mask,
1420 guint n_handlers = 0;
1422 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), FALSE);
1423 g_return_val_if_fail ((mask & ~G_SIGNAL_MATCH_MASK) == 0, FALSE);
1425 if (mask & (G_SIGNAL_MATCH_CLOSURE | G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA))
1427 G_LOCK (g_signal_mutex);
1428 n_handlers = signal_handlers_foreach_matched_R (instance, mask, signal_id, detail,
1429 closure, func, data,
1430 g_signal_handler_block);
1431 G_UNLOCK (g_signal_mutex);
1438 g_signal_handlers_unblock_matched (gpointer instance,
1439 GSignalMatchType mask,
1446 guint n_handlers = 0;
1448 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), FALSE);
1449 g_return_val_if_fail ((mask & ~G_SIGNAL_MATCH_MASK) == 0, FALSE);
1451 if (mask & (G_SIGNAL_MATCH_CLOSURE | G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA))
1453 G_LOCK (g_signal_mutex);
1454 n_handlers = signal_handlers_foreach_matched_R (instance, mask, signal_id, detail,
1455 closure, func, data,
1456 g_signal_handler_unblock);
1457 G_UNLOCK (g_signal_mutex);
1464 g_signal_handlers_disconnect_matched (gpointer instance,
1465 GSignalMatchType mask,
1472 guint n_handlers = 0;
1474 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), FALSE);
1475 g_return_val_if_fail ((mask & ~G_SIGNAL_MATCH_MASK) == 0, FALSE);
1477 if (mask & (G_SIGNAL_MATCH_CLOSURE | G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA))
1479 G_LOCK (g_signal_mutex);
1480 n_handlers = signal_handlers_foreach_matched_R (instance, mask, signal_id, detail,
1481 closure, func, data,
1482 g_signal_handler_disconnect);
1483 G_UNLOCK (g_signal_mutex);
1490 g_signal_has_handler_pending (gpointer instance,
1493 gboolean may_be_blocked)
1495 HandlerMatch *mlist;
1496 gboolean has_pending;
1498 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), FALSE);
1499 g_return_val_if_fail (signal_id > 0, FALSE);
1501 G_LOCK (g_signal_mutex);
1504 SignalNode *node = LOOKUP_SIGNAL_NODE (signal_id);
1506 if (!(node->flags & G_SIGNAL_DETAILED))
1508 g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
1509 G_UNLOCK (g_signal_mutex);
1513 mlist = handlers_find (instance,
1514 (G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_DETAIL | (may_be_blocked ? 0 : G_SIGNAL_MATCH_UNBLOCKED)),
1515 signal_id, detail, NULL, NULL, NULL, TRUE);
1519 handler_match_free1_R (mlist, instance);
1522 has_pending = FALSE;
1523 G_UNLOCK (g_signal_mutex);
1529 g_signal_emitv (const GValue *instance_and_params,
1532 GValue *return_value)
1534 const GValue *param_values;
1539 g_return_if_fail (instance_and_params != NULL);
1540 instance = g_value_get_as_pointer (instance_and_params);
1541 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1542 g_return_if_fail (signal_id > 0);
1544 param_values = instance_and_params + 1;
1546 G_LOCK (g_signal_mutex);
1547 node = LOOKUP_SIGNAL_NODE (signal_id);
1548 if (!node || !g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
1550 g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
1551 G_UNLOCK (g_signal_mutex);
1554 #ifdef G_ENABLE_DEBUG
1555 if (detail && !(node->flags & G_SIGNAL_DETAILED))
1557 g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
1558 G_UNLOCK (g_signal_mutex);
1561 for (i = 0; i < node->n_params; i++)
1562 if (!G_VALUE_HOLDS (param_values + i, node->param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE))
1564 g_critical ("%s: value for `%s' parameter %u for signal \"%s\" is of type `%s'",
1566 g_type_name (node->param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE),
1569 G_VALUE_TYPE_NAME (param_values + i));
1570 G_UNLOCK (g_signal_mutex);
1573 if (node->return_type != G_TYPE_NONE)
1577 g_critical ("%s: return value `%s' for signal \"%s\" is (NULL)",
1579 g_type_name (node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE),
1581 G_UNLOCK (g_signal_mutex);
1584 else if (!node->accumulator && !G_VALUE_HOLDS (return_value, node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE))
1586 g_critical ("%s: return value `%s' for signal \"%s\" is of type `%s'",
1588 g_type_name (node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE),
1590 G_VALUE_TYPE_NAME (return_value));
1591 G_UNLOCK (g_signal_mutex);
1596 return_value = NULL;
1597 #endif /* G_ENABLE_DEBUG */
1599 signal_emit_R (node, detail, instance, return_value, instance_and_params);
1600 G_UNLOCK (g_signal_mutex);
1604 g_signal_emit_valist (gpointer instance,
1609 GValue *instance_and_params, stack_values[MAX_STACK_VALUES], *free_me = NULL;
1610 GValue *param_values;
1614 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1615 g_return_if_fail (signal_id > 0);
1617 G_LOCK (g_signal_mutex);
1618 node = LOOKUP_SIGNAL_NODE (signal_id);
1619 if (!node || !g_type_is_a (G_TYPE_FROM_INSTANCE (instance), node->itype))
1621 g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
1622 G_UNLOCK (g_signal_mutex);
1625 #ifndef G_DISABLE_CHECKS
1626 if (detail && !(node->flags & G_SIGNAL_DETAILED))
1628 g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
1629 G_UNLOCK (g_signal_mutex);
1632 #endif /* !G_DISABLE_CHECKS */
1634 if (node->n_params < MAX_STACK_VALUES)
1635 instance_and_params = stack_values;
1638 free_me = g_new (GValue, node->n_params + 1);
1639 instance_and_params = free_me;
1641 param_values = instance_and_params + 1;
1642 for (i = 0; i < node->n_params; i++)
1646 param_values[i].g_type = 0;
1647 g_value_init (param_values + i, node->param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE);
1648 G_VALUE_COLLECT (param_values + i,
1650 node->param_types[i] & G_SIGNAL_TYPE_STATIC_SCOPE ? G_VALUE_NOCOPY_CONTENTS : 0,
1654 g_warning ("%s: %s", G_STRLOC, error);
1657 /* we purposely leak the value here, it might not be
1658 * in a sane state if an error condition occoured
1661 g_value_unset (param_values + i);
1663 G_UNLOCK (g_signal_mutex);
1668 instance_and_params->g_type = 0;
1669 g_value_init (instance_and_params, node->itype);
1670 g_value_set_instance (instance_and_params, instance);
1671 if (node->return_type == G_TYPE_NONE)
1672 signal_emit_R (node, detail, instance, NULL, instance_and_params);
1675 GValue return_value = { 0, };
1676 gchar *error = NULL;
1678 g_value_init (&return_value, node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE);
1679 if (signal_emit_R (node, detail, instance, &return_value, instance_and_params))
1680 G_VALUE_LCOPY (&return_value,
1682 node->return_type & G_SIGNAL_TYPE_STATIC_SCOPE ? G_VALUE_NOCOPY_CONTENTS : 0,
1685 g_value_unset (&return_value);
1688 g_warning ("%s: %s", G_STRLOC, error);
1691 /* we purposely leak the value here, it might not be
1692 * in a sane state if an error condition occoured
1696 for (i = 0; i < node->n_params; i++)
1697 g_value_unset (param_values + i);
1698 g_value_unset (instance_and_params);
1701 G_UNLOCK (g_signal_mutex);
1705 g_signal_emit (gpointer instance,
1712 va_start (var_args, detail);
1713 g_signal_emit_valist (instance, signal_id, detail, var_args);
1718 g_signal_emit_by_name (gpointer instance,
1719 const gchar *detailed_signal,
1725 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
1726 g_return_if_fail (detailed_signal != NULL);
1728 G_LOCK (g_signal_mutex);
1729 signal_id = signal_parse_name (detailed_signal, G_TYPE_FROM_INSTANCE (instance), &detail, TRUE);
1730 G_UNLOCK (g_signal_mutex);
1736 va_start (var_args, detailed_signal);
1737 g_signal_emit_valist (instance, signal_id, detail, var_args);
1741 g_warning ("%s: signal name `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
1745 signal_emit_R (SignalNode *node,
1748 GValue *return_value,
1749 const GValue *instance_and_params)
1751 EmissionState emission_state = 0;
1752 GSignalAccumulator accumulator;
1753 GSignalInvocationHint ihint;
1754 GClosure *class_closure;
1756 Handler *handler_list = NULL;
1757 GValue accu = { 0, };
1758 gboolean accu_used = FALSE;
1759 guint signal_id = node->signal_id;
1760 gboolean return_value_altered = FALSE;
1762 #ifdef G_ENABLE_DEBUG
1763 IF_DEBUG (SIGNALS, g_trace_instance_signals == instance || g_trap_instance_signals == instance)
1765 g_message ("%s::%s(%u) emitted (instance=%p signal-node=%p)\n",
1766 g_type_name (G_TYPE_FROM_INSTANCE (instance)),
1769 if (g_trap_instance_signals == instance)
1772 #endif /* G_ENABLE_DEBUG */
1774 if (node->flags & G_SIGNAL_NO_RECURSE)
1776 Emission *emission = emission_find (g_restart_emissions, signal_id, detail, instance);
1780 *emission->state_p = EMISSION_RESTART;
1781 return return_value_altered;
1784 ihint.signal_id = node->signal_id;
1785 ihint.detail = detail;
1786 accumulator = node->accumulator;
1788 g_value_init (&accu, node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE);
1789 emission_push ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions,
1790 signal_id, detail, instance, &emission_state);
1791 class_closure = node->class_closure;
1796 handler_unref_R (signal_id, instance, handler_list);
1797 hlist = handler_list_lookup (signal_id, instance);
1798 handler_list = hlist ? hlist->handlers : NULL;
1800 handler_ref (handler_list);
1802 ihint.run_type = G_SIGNAL_RUN_FIRST;
1804 if ((node->flags & G_SIGNAL_RUN_FIRST) && class_closure)
1806 emission_state = EMISSION_RUN;
1808 G_UNLOCK (g_signal_mutex);
1812 g_value_reset (&accu);
1813 g_closure_invoke (class_closure,
1816 instance_and_params,
1818 if (!accumulator (&ihint, return_value, &accu) &&
1819 emission_state == EMISSION_RUN)
1820 emission_state = EMISSION_STOP;
1824 g_closure_invoke (class_closure,
1827 instance_and_params,
1829 G_LOCK (g_signal_mutex);
1830 return_value_altered = TRUE;
1832 if (emission_state == EMISSION_STOP)
1834 else if (emission_state == EMISSION_RESTART)
1838 if (node->emission_hooks)
1840 emission_state = EMISSION_HOOK;
1842 G_UNLOCK (g_signal_mutex);
1843 g_print ("emission_hooks()\n");
1844 G_LOCK (g_signal_mutex);
1846 if (emission_state == EMISSION_RESTART)
1852 Handler *handler = handler_list;
1854 emission_state = EMISSION_RUN;
1855 handler_ref (handler);
1862 handler_unref_R (signal_id, instance, handler_list);
1863 handler_list = handler;
1866 else if (!handler->block_count && (!handler->detail || handler->detail == detail))
1868 G_UNLOCK (g_signal_mutex);
1872 g_value_reset (&accu);
1873 g_closure_invoke (handler->closure,
1876 instance_and_params,
1878 if (!accumulator (&ihint, return_value, &accu) &&
1879 emission_state == EMISSION_RUN)
1880 emission_state = EMISSION_STOP;
1884 g_closure_invoke (handler->closure,
1887 instance_and_params,
1889 G_LOCK (g_signal_mutex);
1890 return_value_altered = TRUE;
1892 tmp = emission_state == EMISSION_RUN ? handler->next : NULL;
1895 tmp = handler->next;
1899 handler_unref_R (signal_id, instance, handler_list);
1900 handler_list = handler;
1905 if (emission_state == EMISSION_STOP)
1907 else if (emission_state == EMISSION_RESTART)
1911 ihint.run_type = G_SIGNAL_RUN_LAST;
1913 if ((node->flags & G_SIGNAL_RUN_LAST) && class_closure)
1915 emission_state = EMISSION_RUN;
1917 G_UNLOCK (g_signal_mutex);
1921 g_value_reset (&accu);
1922 g_closure_invoke (class_closure,
1925 instance_and_params,
1927 if (!accumulator (&ihint, return_value, &accu) &&
1928 emission_state == EMISSION_RUN)
1929 emission_state = EMISSION_STOP;
1933 g_closure_invoke (class_closure,
1936 instance_and_params,
1938 G_LOCK (g_signal_mutex);
1939 return_value_altered = TRUE;
1941 if (emission_state == EMISSION_STOP)
1943 else if (emission_state == EMISSION_RESTART)
1949 Handler *handler = handler_list;
1951 emission_state = EMISSION_RUN;
1952 handler_ref (handler);
1957 if (handler->after && !handler->block_count && (!handler->detail || handler->detail == detail))
1959 G_UNLOCK (g_signal_mutex);
1963 g_value_reset (&accu);
1964 g_closure_invoke (handler->closure,
1967 instance_and_params,
1969 if (!accumulator (&ihint, return_value, &accu) &&
1970 emission_state == EMISSION_RUN)
1971 emission_state = EMISSION_STOP;
1975 g_closure_invoke (handler->closure,
1978 instance_and_params,
1980 G_LOCK (g_signal_mutex);
1981 return_value_altered = TRUE;
1983 tmp = emission_state == EMISSION_RUN ? handler->next : NULL;
1986 tmp = handler->next;
1990 handler_unref_R (signal_id, instance, handler);
1995 if (emission_state == EMISSION_STOP)
1997 else if (emission_state == EMISSION_RESTART)
2003 ihint.run_type = G_SIGNAL_RUN_CLEANUP;
2005 if ((node->flags & G_SIGNAL_RUN_CLEANUP) && class_closure)
2007 gboolean need_unset = FALSE;
2009 emission_state = EMISSION_STOP;
2011 G_UNLOCK (g_signal_mutex);
2012 if (node->return_type != G_TYPE_NONE)
2016 g_value_init (&accu, node->return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE);
2020 g_value_reset (&accu);
2022 g_closure_invoke (class_closure,
2023 node->return_type != G_TYPE_NONE ? &accu : NULL,
2025 instance_and_params,
2028 g_value_unset (&accu);
2029 G_LOCK (g_signal_mutex);
2031 if (emission_state == EMISSION_RESTART)
2036 handler_unref_R (signal_id, instance, handler_list);
2038 emission_pop ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions, &emission_state);
2040 g_value_unset (&accu);
2042 return return_value_altered;
2046 /* --- compile standard marshallers --- */
2047 #include "gvaluetypes.h"
2048 #include "gmarshal.c"