2 * sgen-bridge.c: Simple generational GC.
4 * Copyright 2011 Novell, Inc (http://www.novell.com)
5 * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
7 * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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13 * provided the above notices are retained, and a notice that the code was
14 * modified is included with the above copyright notice.
17 * Copyright 2001-2003 Ximian, Inc
18 * Copyright 2003-2010 Novell, Inc.
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47 #include "sgen-bridge.h"
48 #include "sgen-hash-table.h"
49 #include "sgen-qsort.h"
50 #include "utils/mono-logger-internal.h"
51 #include "utils/mono-time.h"
52 #include "utils/mono-compiler.h"
77 * FIXME: Optimizations:
79 * Don't allocate a scrs array for just one source. Most objects have
80 * just one source, so use the srcs pointer itself.
82 typedef struct _HashEntry {
83 MonoObject *obj; /* This is a duplicate - it's already stored in the hash table */
98 } HashEntryWithAccounting;
100 typedef struct _SCC {
103 int num_bridge_entries;
104 DynIntArray xrefs; /* these are incoming, not outgoing */
107 static SgenHashTable hash_table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_OLD_BRIDGE_HASH_TABLE, INTERNAL_MEM_OLD_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntry), mono_aligned_addr_hash, NULL);
109 static int current_time;
111 static gboolean bridge_accounting_enabled = FALSE;
113 static SgenBridgeProcessor *bridge_processor;
121 dyn_array_init (DynArray *da)
129 dyn_array_uninit (DynArray *da, int elem_size)
131 if (da->capacity <= 0)
134 sgen_free_internal_dynamic (da->data, elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA);
139 dyn_array_ensure_capacity (DynArray *da, int capacity, int elem_size)
141 int old_capacity = da->capacity;
144 if (capacity <= old_capacity)
147 if (da->capacity == 0)
149 while (capacity > da->capacity)
152 new_data = sgen_alloc_internal_dynamic (elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA, TRUE);
153 memcpy (new_data, da->data, elem_size * da->size);
154 sgen_free_internal_dynamic (da->data, elem_size * old_capacity, INTERNAL_MEM_BRIDGE_DATA);
159 dyn_array_add (DynArray *da, int elem_size)
163 dyn_array_ensure_capacity (da, da->size + 1, elem_size);
165 p = da->data + da->size * elem_size;
172 dyn_array_int_init (DynIntArray *da)
174 dyn_array_init (&da->array);
178 dyn_array_int_uninit (DynIntArray *da)
180 dyn_array_uninit (&da->array, sizeof (int));
184 dyn_array_int_size (DynIntArray *da)
186 return da->array.size;
190 dyn_array_int_set_size (DynIntArray *da, int size)
192 da->array.size = size;
196 dyn_array_int_add (DynIntArray *da, int x)
198 int *p = dyn_array_add (&da->array, sizeof (int));
203 dyn_array_int_get (DynIntArray *da, int x)
205 return ((int*)da->array.data)[x];
209 dyn_array_int_set (DynIntArray *da, int idx, int val)
211 ((int*)da->array.data)[idx] = val;
215 dyn_array_int_ensure_capacity (DynIntArray *da, int capacity)
217 dyn_array_ensure_capacity (&da->array, capacity, sizeof (int));
221 dyn_array_int_set_all (DynIntArray *dst, DynIntArray *src)
223 dyn_array_int_ensure_capacity (dst, src->array.size);
224 memcpy (dst->array.data, src->array.data, src->array.size * sizeof (int));
225 dst->array.size = src->array.size;
231 dyn_array_ptr_init (DynPtrArray *da)
233 dyn_array_init (&da->array);
237 dyn_array_ptr_uninit (DynPtrArray *da)
239 dyn_array_uninit (&da->array, sizeof (void*));
243 dyn_array_ptr_size (DynPtrArray *da)
245 return da->array.size;
249 dyn_array_ptr_set_size (DynPtrArray *da, int size)
251 da->array.size = size;
255 dyn_array_ptr_get (DynPtrArray *da, int x)
257 return ((void**)da->array.data)[x];
261 dyn_array_ptr_add (DynPtrArray *da, void *ptr)
263 void **p = dyn_array_add (&da->array, sizeof (void*));
267 #define dyn_array_ptr_push dyn_array_ptr_add
270 dyn_array_ptr_pop (DynPtrArray *da)
273 int size = da->array.size;
275 p = dyn_array_ptr_get (da, size - 1);
283 dyn_array_scc_init (DynSCCArray *da)
285 dyn_array_init (&da->array);
289 dyn_array_scc_uninit (DynSCCArray *da)
291 dyn_array_uninit (&da->array, sizeof (SCC));
295 dyn_array_scc_size (DynSCCArray *da)
297 return da->array.size;
301 dyn_array_scc_add (DynSCCArray *da)
303 return dyn_array_add (&da->array, sizeof (SCC));
307 dyn_array_scc_get_ptr (DynSCCArray *da, int x)
309 return &((SCC*)da->array.data)[x];
314 static DynIntArray merge_array;
317 dyn_array_int_contains (DynIntArray *da, int x)
320 for (i = 0; i < dyn_array_int_size (da); ++i)
321 if (dyn_array_int_get (da, i) == x)
328 dyn_array_int_merge (DynIntArray *dst, DynIntArray *src)
332 dyn_array_int_ensure_capacity (&merge_array, dyn_array_int_size (dst) + dyn_array_int_size (src));
333 dyn_array_int_set_size (&merge_array, 0);
335 for (i = j = 0; i < dyn_array_int_size (dst) || j < dyn_array_int_size (src); ) {
336 if (i < dyn_array_int_size (dst) && j < dyn_array_int_size (src)) {
337 int a = dyn_array_int_get (dst, i);
338 int b = dyn_array_int_get (src, j);
340 dyn_array_int_add (&merge_array, a);
343 dyn_array_int_add (&merge_array, a);
347 dyn_array_int_add (&merge_array, b);
350 } else if (i < dyn_array_int_size (dst)) {
351 dyn_array_int_add (&merge_array, dyn_array_int_get (dst, i));
354 dyn_array_int_add (&merge_array, dyn_array_int_get (src, j));
359 if (dyn_array_int_size (&merge_array) > dyn_array_int_size (dst)) {
360 dyn_array_int_set_all (dst, &merge_array);
365 dyn_array_int_merge_one (DynIntArray *array, int value)
369 int size = dyn_array_int_size (array);
371 for (i = 0; i < size; ++i) {
372 if (dyn_array_int_get (array, i) == value)
374 else if (dyn_array_int_get (array, i) > value)
378 dyn_array_int_ensure_capacity (array, size + 1);
381 tmp = dyn_array_int_get (array, i);
382 for (; i < size; ++i) {
383 dyn_array_int_set (array, i, value);
385 tmp = dyn_array_int_get (array, i + 1);
387 dyn_array_int_set (array, size, value);
389 dyn_array_int_set (array, size, value);
392 dyn_array_int_set_size (array, size + 1);
397 enable_accounting (void)
399 SgenHashTable table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntryWithAccounting), mono_aligned_addr_hash, NULL);
400 bridge_accounting_enabled = TRUE;
404 static MonoGCBridgeObjectKind
405 class_kind (MonoClass *class)
407 return bridge_callbacks.bridge_class_kind (class);
411 get_hash_entry (MonoObject *obj, gboolean *existing)
413 HashEntry *entry = sgen_hash_table_lookup (&hash_table, obj);
424 memset (&new_entry, 0, sizeof (HashEntry));
427 dyn_array_ptr_init (&new_entry.srcs);
428 new_entry.finishing_time = -1;
429 new_entry.scc_index = -1;
431 sgen_hash_table_replace (&hash_table, obj, &new_entry, NULL);
433 return sgen_hash_table_lookup (&hash_table, obj);
437 add_source (HashEntry *entry, HashEntry *src)
439 dyn_array_ptr_add (&entry->srcs, src);
450 SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
451 int entry_size = dyn_array_ptr_size (&entry->srcs);
452 total_srcs += entry_size;
453 if (entry_size > max_srcs)
454 max_srcs = entry_size;
455 dyn_array_ptr_uninit (&entry->srcs);
456 } SGEN_HASH_TABLE_FOREACH_END;
458 sgen_hash_table_clean (&hash_table);
460 dyn_array_int_uninit (&merge_array);
461 //g_print ("total srcs %d - max %d\n", total_srcs, max_srcs);
465 register_bridge_object (MonoObject *obj)
467 HashEntry *entry = get_hash_entry (obj, NULL);
468 entry->is_bridge = TRUE;
473 register_finishing_time (HashEntry *entry, int t)
475 g_assert (entry->finishing_time < 0);
476 entry->finishing_time = t;
480 object_is_live (MonoObject **objp)
482 MonoObject *obj = *objp;
483 MonoObject *fwd = SGEN_OBJECT_IS_FORWARDED (obj);
486 return sgen_hash_table_lookup (&hash_table, fwd) == NULL;
488 if (!sgen_object_is_live (obj))
490 return sgen_hash_table_lookup (&hash_table, obj) == NULL;
493 static DynPtrArray registered_bridges;
494 static DynPtrArray dfs_stack;
496 static int dfs1_passes, dfs2_passes;
500 #define HANDLE_PTR(ptr,obj) do { \
501 MonoObject *dst = (MonoObject*)*(ptr); \
502 if (dst && !object_is_live (&dst)) { \
503 dyn_array_ptr_push (&dfs_stack, obj_entry); \
504 dyn_array_ptr_push (&dfs_stack, get_hash_entry (dst, NULL)); \
509 dfs1 (HashEntry *obj_entry)
512 g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
514 dyn_array_ptr_push (&dfs_stack, NULL);
515 dyn_array_ptr_push (&dfs_stack, obj_entry);
522 obj_entry = dyn_array_ptr_pop (&dfs_stack);
524 src = dyn_array_ptr_pop (&dfs_stack);
526 obj = obj_entry->obj;
530 //g_print ("link %s -> %s\n", sgen_safe_name (src->obj), sgen_safe_name (obj));
531 add_source (obj_entry, src);
533 //g_print ("starting with %s\n", sgen_safe_name (obj));
536 if (obj_entry->is_visited)
539 obj_entry->is_visited = TRUE;
541 dyn_array_ptr_push (&dfs_stack, obj_entry);
542 /* NULL marks that the next entry is to be finished */
543 dyn_array_ptr_push (&dfs_stack, NULL);
545 #include "sgen-scan-object.h"
547 obj_entry = dyn_array_ptr_pop (&dfs_stack);
549 //g_print ("finish %s\n", sgen_safe_name (obj_entry->obj));
550 register_finishing_time (obj_entry, current_time++);
552 } while (dyn_array_ptr_size (&dfs_stack) > 0);
556 scc_add_xref (SCC *src, SCC *dst)
558 g_assert (src != dst);
559 g_assert (src->index != dst->index);
561 if (dyn_array_int_contains (&dst->xrefs, src->index))
563 if (src->num_bridge_entries) {
564 dyn_array_int_merge_one (&dst->xrefs, src->index);
567 dyn_array_int_merge (&dst->xrefs, &src->xrefs);
568 for (i = 0; i < dyn_array_int_size (&dst->xrefs); ++i)
569 g_assert (dyn_array_int_get (&dst->xrefs, i) != dst->index);
574 scc_add_entry (SCC *scc, HashEntry *entry)
576 g_assert (entry->scc_index < 0);
577 entry->scc_index = scc->index;
578 if (entry->is_bridge)
579 ++scc->num_bridge_entries;
582 static DynSCCArray sccs;
583 static SCC *current_scc;
586 dfs2 (HashEntry *entry)
590 g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
592 dyn_array_ptr_push (&dfs_stack, entry);
595 entry = dyn_array_ptr_pop (&dfs_stack);
598 if (entry->scc_index >= 0) {
599 if (entry->scc_index != current_scc->index)
600 scc_add_xref (dyn_array_scc_get_ptr (&sccs, entry->scc_index), current_scc);
604 scc_add_entry (current_scc, entry);
606 for (i = 0; i < dyn_array_ptr_size (&entry->srcs); ++i)
607 dyn_array_ptr_push (&dfs_stack, dyn_array_ptr_get (&entry->srcs, i));
608 } while (dyn_array_ptr_size (&dfs_stack) > 0);
612 compare_hash_entries (const HashEntry *e1, const HashEntry *e2)
614 return e2->finishing_time - e1->finishing_time;
617 DEF_QSORT_INLINE(hash_entries, HashEntry*, compare_hash_entries)
619 static unsigned long step_1, step_2, step_3, step_4, step_5, step_6;
620 static int fist_pass_links, second_pass_links, sccs_links;
621 static int max_sccs_links = 0;
624 register_finalized_object (MonoObject *obj)
626 g_assert (sgen_need_bridge_processing ());
627 dyn_array_ptr_push (®istered_bridges, obj);
633 dyn_array_ptr_set_size (®istered_bridges, 0);
637 processing_stw_step (void)
641 SGEN_TV_DECLARE (atv);
642 SGEN_TV_DECLARE (btv);
644 if (!dyn_array_ptr_size (®istered_bridges))
647 SGEN_TV_GETTIME (btv);
651 dyn_array_ptr_init (&dfs_stack);
652 dyn_array_int_init (&merge_array);
656 First we insert all bridges into the hash table and then we do dfs1.
658 It must be done in 2 steps since the bridge arrays doesn't come in reverse topological order,
659 which means that we can have entry N pointing to entry N + 1.
661 If we dfs1 entry N before N + 1 is registered we'll not consider N + 1 for this bridge
662 pass and not create the required xref between the two.
664 bridge_count = dyn_array_ptr_size (®istered_bridges);
665 for (i = 0; i < bridge_count ; ++i)
666 register_bridge_object (dyn_array_ptr_get (®istered_bridges, i));
668 for (i = 0; i < bridge_count; ++i)
669 dfs1 (get_hash_entry (dyn_array_ptr_get (®istered_bridges, i), NULL));
671 SGEN_TV_GETTIME (atv);
672 step_2 = SGEN_TV_ELAPSED (btv, atv);
675 static int num_registered_bridges, hash_table_size;
678 processing_build_callback_data (int generation)
681 int num_sccs, num_xrefs;
682 int max_entries, max_xrefs;
686 HashEntry **all_entries;
687 MonoGCBridgeSCC **api_sccs;
688 MonoGCBridgeXRef *api_xrefs;
689 SGEN_TV_DECLARE (atv);
690 SGEN_TV_DECLARE (btv);
692 g_assert (bridge_processor->num_sccs == 0 && bridge_processor->num_xrefs == 0);
693 g_assert (!bridge_processor->api_sccs && !bridge_processor->api_xrefs);
695 if (!dyn_array_ptr_size (®istered_bridges))
698 g_assert (bridge_processing_in_progress);
700 SGEN_TV_GETTIME (atv);
702 /* alloc and fill array of all entries */
704 all_entries = sgen_alloc_internal_dynamic (sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
707 SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
708 g_assert (entry->finishing_time >= 0);
709 all_entries [j++] = entry;
710 fist_pass_links += dyn_array_ptr_size (&entry->srcs);
711 } SGEN_HASH_TABLE_FOREACH_END;
712 g_assert (j == hash_table.num_entries);
713 hash_table_size = hash_table.num_entries;
715 /* sort array according to decreasing finishing time */
716 qsort_hash_entries (all_entries, hash_table.num_entries);
718 SGEN_TV_GETTIME (btv);
719 step_3 = SGEN_TV_ELAPSED (atv, btv);
721 /* second DFS pass */
723 dyn_array_scc_init (&sccs);
724 for (i = 0; i < hash_table.num_entries; ++i) {
725 HashEntry *entry = all_entries [i];
726 if (entry->scc_index < 0) {
727 int index = dyn_array_scc_size (&sccs);
728 current_scc = dyn_array_scc_add (&sccs);
729 current_scc->index = index;
730 current_scc->num_bridge_entries = 0;
731 current_scc->api_index = -1;
732 dyn_array_int_init (¤t_scc->xrefs);
739 * Compute the weight of each object. The weight of an object is its size plus the size of all
740 * objects it points do. When the an object is pointed by multiple objects we distribute it's weight
741 * equally among them. This distribution gives a rough estimate of the real impact of making the object
744 * The reasoning for this model is that complex graphs with single roots will have a bridge with very high
745 * value in comparison to others.
747 * The all_entries array has all objects topologically sorted. To correctly propagate the weights it must be
748 * done in reverse topological order - so we calculate the weight of the pointed-to objects before processing
749 * pointer-from objects.
751 * We log those objects in the opposite order for no particular reason. The other constrain is that it should use the same
752 * direction as the other logging loop that records live/dead information.
754 if (bridge_accounting_enabled) {
755 for (i = hash_table.num_entries - 1; i >= 0; --i) {
757 HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
759 entry->weight += (double)sgen_safe_object_get_size (entry->entry.obj);
760 w = entry->weight / dyn_array_ptr_size (&entry->entry.srcs);
761 for (j = 0; j < dyn_array_ptr_size (&entry->entry.srcs); ++j) {
762 HashEntryWithAccounting *other = (HashEntryWithAccounting *)dyn_array_ptr_get (&entry->entry.srcs, j);
766 for (i = 0; i < hash_table.num_entries; ++i) {
767 HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
768 if (entry->entry.is_bridge) {
769 MonoClass *klass = ((MonoVTable*)SGEN_LOAD_VTABLE (entry->entry.obj))->klass;
770 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "OBJECT %s::%s (%p) weight %f", klass->name_space, klass->name, entry->entry.obj, entry->weight);
775 sccs_size = dyn_array_scc_size (&sccs);
777 for (i = 0; i < hash_table.num_entries; ++i) {
778 HashEntry *entry = all_entries [i];
779 second_pass_links += dyn_array_ptr_size (&entry->srcs);
782 SGEN_TV_GETTIME (atv);
783 step_4 = SGEN_TV_ELAPSED (btv, atv);
785 //g_print ("%d sccs\n", sccs.size);
787 dyn_array_ptr_uninit (&dfs_stack);
789 /* init data for callback */
792 for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
793 SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
794 g_assert (scc->index == i);
795 if (scc->num_bridge_entries)
797 sccs_links += dyn_array_int_size (&scc->xrefs);
798 max_sccs_links = MAX (max_sccs_links, dyn_array_int_size (&scc->xrefs));
801 api_sccs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
804 for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
805 SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
806 if (!scc->num_bridge_entries)
809 api_sccs [j] = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * scc->num_bridge_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
810 api_sccs [j]->is_alive = FALSE;
811 api_sccs [j]->num_objs = scc->num_bridge_entries;
812 scc->num_bridge_entries = 0;
813 scc->api_index = j++;
815 num_xrefs += dyn_array_int_size (&scc->xrefs);
818 SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
819 if (entry->is_bridge) {
820 SCC *scc = dyn_array_scc_get_ptr (&sccs, entry->scc_index);
821 api_sccs [scc->api_index]->objs [scc->num_bridge_entries++] = entry->obj;
823 } SGEN_HASH_TABLE_FOREACH_END;
825 api_xrefs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
827 for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
829 SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
830 if (!scc->num_bridge_entries)
832 for (k = 0; k < dyn_array_int_size (&scc->xrefs); ++k) {
833 SCC *src_scc = dyn_array_scc_get_ptr (&sccs, dyn_array_int_get (&scc->xrefs, k));
834 if (!src_scc->num_bridge_entries)
836 api_xrefs [j].src_scc_index = src_scc->api_index;
837 api_xrefs [j].dst_scc_index = scc->api_index;
842 SGEN_TV_GETTIME (btv);
843 step_5 = SGEN_TV_ELAPSED (atv, btv);
848 max_entries = max_xrefs = 0;
849 for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
850 SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
851 if (scc->num_bridge_entries)
853 if (scc->num_bridge_entries > max_entries)
854 max_entries = scc->num_bridge_entries;
855 if (dyn_array_int_size (&scc->xrefs) > max_xrefs)
856 max_xrefs = dyn_array_int_size (&scc->xrefs);
857 dyn_array_int_uninit (&scc->xrefs);
860 dyn_array_scc_uninit (&sccs);
862 sgen_free_internal_dynamic (all_entries, sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA);
865 /* Empty the registered bridges array */
866 num_registered_bridges = dyn_array_ptr_size (®istered_bridges);
867 dyn_array_ptr_set_size (®istered_bridges, 0);
869 SGEN_TV_GETTIME (atv);
870 step_6 = SGEN_TV_ELAPSED (btv, atv);
872 //g_print ("%d sccs containing bridges - %d max bridge objects - %d max xrefs\n", j, max_entries, max_xrefs);
874 bridge_processor->num_sccs = num_sccs;
875 bridge_processor->api_sccs = api_sccs;
876 bridge_processor->num_xrefs = num_xrefs;
877 bridge_processor->api_xrefs = api_xrefs;
881 processing_after_callback (int generation)
884 int num_sccs = bridge_processor->num_sccs;
885 MonoGCBridgeSCC **api_sccs = bridge_processor->api_sccs;
887 if (bridge_accounting_enabled) {
888 for (i = 0; i < num_sccs; ++i) {
889 for (j = 0; j < api_sccs [i]->num_objs; ++j)
890 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC,
891 "OBJECT %s (%p) SCC [%d] %s",
892 sgen_safe_name (api_sccs [i]->objs [j]), api_sccs [i]->objs [j],
894 api_sccs [i]->is_alive ? "ALIVE" : "DEAD");
898 mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "GC_OLD_BRIDGE num-objects %d num_hash_entries %d sccs size %d init %.2fms df1 %.2fms sort %.2fms dfs2 %.2fms setup-cb %.2fms free-data %.2fms links %d/%d/%d/%d dfs passes %d/%d",
899 num_registered_bridges, hash_table_size, dyn_array_scc_size (&sccs),
906 fist_pass_links, second_pass_links, sccs_links, max_sccs_links,
907 dfs1_passes, dfs2_passes);
909 step_1 = 0; /* We must cleanup since this value is used as an accumulator. */
910 fist_pass_links = second_pass_links = sccs_links = max_sccs_links = 0;
911 dfs1_passes = dfs2_passes = 0;
915 describe_pointer (MonoObject *obj)
920 for (i = 0; i < dyn_array_ptr_size (®istered_bridges); ++i) {
921 if (obj == dyn_array_ptr_get (®istered_bridges, i)) {
922 printf ("Pointer is a registered bridge object.\n");
927 entry = sgen_hash_table_lookup (&hash_table, obj);
931 printf ("Bridge hash table entry %p:\n", entry);
932 printf (" is bridge: %d\n", (int)entry->is_bridge);
933 printf (" is visited: %d\n", (int)entry->is_visited);
937 sgen_old_bridge_init (SgenBridgeProcessor *collector)
939 collector->reset_data = reset_data;
940 collector->processing_stw_step = processing_stw_step;
941 collector->processing_build_callback_data = processing_build_callback_data;
942 collector->processing_after_callback = processing_after_callback;
943 collector->class_kind = class_kind;
944 collector->register_finalized_object = register_finalized_object;
945 collector->describe_pointer = describe_pointer;
946 collector->enable_accounting = enable_accounting;
948 bridge_processor = collector;