示例#1
0
/* LOCKING: requires that the GC lock is held */
static void
register_for_finalization (MonoObject *obj, void *user_data, int generation)
{
	FinalizeEntryHashTable *hash_table = get_finalize_entry_hash_table (generation);
	FinalizeEntry **finalizable_hash;
	mword finalizable_hash_size;
	FinalizeEntry *entry, *prev;
	unsigned int hash;
	if (no_finalize)
		return;
	g_assert (user_data == NULL || user_data == mono_gc_run_finalize);
	hash = mono_object_hash (obj);
	rehash_fin_table_if_necessary (hash_table);
	finalizable_hash = hash_table->table;
	finalizable_hash_size = hash_table->size;
	hash %= finalizable_hash_size;
	prev = NULL;
	for (entry = finalizable_hash [hash]; entry; entry = entry->next) {
		if (entry->object == obj) {
			if (!user_data) {
				/* remove from the list */
				if (prev)
					prev->next = entry->next;
				else
					finalizable_hash [hash] = entry->next;
				hash_table->num_registered--;
				DEBUG (5, fprintf (gc_debug_file, "Removed finalizer %p for object: %p (%s) (%d)\n", entry, obj, obj->vtable->klass->name, hash_table->num_registered));
				mono_sgen_free_internal (entry, INTERNAL_MEM_FINALIZE_ENTRY);
			}
			return;
		}
		prev = entry;
	}
	if (!user_data) {
		/* request to deregister, but already out of the list */
		return;
	}
	entry = mono_sgen_alloc_internal (INTERNAL_MEM_FINALIZE_ENTRY);
	entry->object = obj;
	entry->next = finalizable_hash [hash];
	finalizable_hash [hash] = entry;
	hash_table->num_registered++;
	DEBUG (5, fprintf (gc_debug_file, "Added finalizer %p for object: %p (%s) (%d) to %s table\n", entry, obj, obj->vtable->klass->name, hash_table->num_registered, generation_name (generation)));
}
示例#2
0
/* LOCKING: requires that the GC lock is held */
static void
rehash_fin_table (FinalizeEntryHashTable *hash_table)
{
	FinalizeEntry **finalizable_hash = hash_table->table;
	mword finalizable_hash_size = hash_table->size;
	int i;
	unsigned int hash;
	FinalizeEntry **new_hash;
	FinalizeEntry *entry, *next;
	int new_size = g_spaced_primes_closest (hash_table->num_registered);

	new_hash = mono_sgen_alloc_internal_dynamic (new_size * sizeof (FinalizeEntry*), INTERNAL_MEM_FIN_TABLE);
	for (i = 0; i < finalizable_hash_size; ++i) {
		for (entry = finalizable_hash [i]; entry; entry = next) {
			hash = mono_object_hash (entry->object) % new_size;
			next = entry->next;
			entry->next = new_hash [hash];
			new_hash [hash] = entry;
		}
	}
	mono_sgen_free_internal_dynamic (finalizable_hash, finalizable_hash_size * sizeof (FinalizeEntry*), INTERNAL_MEM_FIN_TABLE);
	hash_table->table = new_hash;
	hash_table->size = new_size;
}
示例#3
0
static int
tagged_object_hash (MonoObject *o)
{
    return mono_object_hash (tagged_object_get_object (o));
}
示例#4
0
/* LOCKING: requires that the GC lock is held */
static void
finalize_in_range (CopyOrMarkObjectFunc copy_func, char *start, char *end, int generation, GrayQueue *queue)
{
	FinalizeEntryHashTable *hash_table = get_finalize_entry_hash_table (generation);
	FinalizeEntry *entry, *prev;
	int i;
	FinalizeEntry **finalizable_hash = hash_table->table;
	mword finalizable_hash_size = hash_table->size;

	if (no_finalize)
		return;
	for (i = 0; i < finalizable_hash_size; ++i) {
		prev = NULL;
		for (entry = finalizable_hash [i]; entry;) {
			if ((char*)entry->object >= start && (char*)entry->object < end && !major_collector.is_object_live (entry->object)) {
				gboolean is_fin_ready = object_is_fin_ready (entry->object);
				char *copy = entry->object;
				copy_func ((void**)&copy, queue);
				if (is_fin_ready) {
					char *from;
					FinalizeEntry *next;
					/* remove and put in fin_ready_list */
					if (prev)
						prev->next = entry->next;
					else
						finalizable_hash [i] = entry->next;
					next = entry->next;
					num_ready_finalizers++;
					hash_table->num_registered--;
					queue_finalization_entry (entry);
					bridge_register_finalized_object ((MonoObject*)copy);
					/* Make it survive */
					from = entry->object;
					entry->object = copy;
					DEBUG (5, fprintf (gc_debug_file, "Queueing object for finalization: %p (%s) (was at %p) (%d/%d)\n", entry->object, safe_name (entry->object), from, num_ready_finalizers, hash_table->num_registered));
					entry = next;
					continue;
				} else {
					char *from = entry->object;
					if (hash_table == &minor_finalizable_hash && !ptr_in_nursery (copy)) {
						FinalizeEntry *next = entry->next;
						unsigned int major_hash;
						/* remove from the list */
						if (prev)
							prev->next = entry->next;
						else
							finalizable_hash [i] = entry->next;
						hash_table->num_registered--;

						entry->object = copy;

						/* insert it into the major hash */
						rehash_fin_table_if_necessary (&major_finalizable_hash);
						major_hash = mono_object_hash ((MonoObject*) copy) %
							major_finalizable_hash.size;
						entry->next = major_finalizable_hash.table [major_hash];
						major_finalizable_hash.table [major_hash] = entry;
						major_finalizable_hash.num_registered++;

						DEBUG (5, fprintf (gc_debug_file, "Promoting finalization of object %p (%s) (was at %p) to major table\n", copy, safe_name (copy), from));

						entry = next;
						continue;
					} else {
						/* update pointer */
						DEBUG (5, fprintf (gc_debug_file, "Updating object for finalization: %p (%s) (was at %p)\n", entry->object, safe_name (entry->object), from));
						entry->object = copy;
					}
				}
			}
			prev = entry;
			entry = entry->next;
		}
	}
}