* Author:
* Rodrigo Kumpera (rkumpera@novell.com)
*
- * SGen is licensed under the terms of the MIT X11 license
- *
* Copyright 2001-2003 Ximian, Inc
* Copyright 2003-2010 Novell, Inc.
* Copyright 2011 Xamarin Inc (http://www.xamarin.com)
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * Copyright (C) 2012 Xamarin Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License 2.0 as published by the Free Software Foundation;
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License 2.0 along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include "metadata/sgen-gc.h"
#include "metadata/sgen-cardtable.h"
+#include "metadata/sgen-memory-governor.h"
+#include "metadata/sgen-protocol.h"
#include "utils/mono-counters.h"
#include "utils/mono-time.h"
#include "utils/mono-memory-model.h"
//#define CARDTABLE_STATS
+#ifdef HAVE_UNISTD_H
#include <unistd.h>
+#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
}
static void
-mono_sgen_card_table_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
+sgen_card_table_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
{
*(void**)field_ptr = value;
- if (mono_sgen_ptr_in_nursery (value))
+ if (sgen_ptr_in_nursery (value))
sgen_card_table_mark_address ((mword)field_ptr);
- mono_sgen_dummy_use (value);
+ sgen_dummy_use (value);
}
static void
-mono_sgen_card_table_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
+sgen_card_table_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
{
*(void**)slot_ptr = value;
- if (mono_sgen_ptr_in_nursery (value))
+ if (sgen_ptr_in_nursery (value))
sgen_card_table_mark_address ((mword)slot_ptr);
- mono_sgen_dummy_use (value);
+ sgen_dummy_use (value);
}
static void
-mono_sgen_card_table_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
+sgen_card_table_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
{
gpointer *dest = dest_ptr;
gpointer *src = src_ptr;
for (; dest >= start; --src, --dest) {
gpointer value = *src;
*dest = value;
- if (mono_sgen_ptr_in_nursery (value))
+ if (sgen_ptr_in_nursery (value))
sgen_card_table_mark_address ((mword)dest);
- mono_sgen_dummy_use (value);
+ sgen_dummy_use (value);
}
} else {
gpointer *end = dest + count;
for (; dest < end; ++src, ++dest) {
gpointer value = *src;
*dest = value;
- if (mono_sgen_ptr_in_nursery (value))
+ if (sgen_ptr_in_nursery (value))
sgen_card_table_mark_address ((mword)dest);
- mono_sgen_dummy_use (value);
+ sgen_dummy_use (value);
}
}
}
static void
-mono_sgen_card_table_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
+sgen_card_table_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
{
size_t element_size = mono_class_value_size (klass, NULL);
size_t size = count * element_size;
}
static void
-mono_sgen_card_table_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
+sgen_card_table_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
{
- int size;
- TLAB_ACCESS_INIT;
-
- size = mono_object_class (obj)->instance_size;
+ int size = mono_object_class (obj)->instance_size;
#ifdef DISABLE_CRITICAL_REGION
LOCK_GC;
#else
+ TLAB_ACCESS_INIT;
ENTER_CRITICAL_REGION;
#endif
mono_gc_memmove ((char*)obj + sizeof (MonoObject), (char*)src + sizeof (MonoObject),
}
static void
-mono_sgen_card_table_wbarrier_generic_nostore (gpointer ptr)
+sgen_card_table_wbarrier_generic_nostore (gpointer ptr)
{
sgen_card_table_mark_address ((mword)ptr);
}
}
static void
-mono_sgen_card_table_record_pointer (gpointer address)
+sgen_card_table_record_pointer (gpointer address)
{
*sgen_card_table_get_card_address ((mword)address) = 1;
}
static gboolean
-mono_sgen_card_table_find_address (char *addr)
+sgen_card_table_find_address (char *addr)
{
return sgen_card_table_address_is_marked ((mword)addr);
}
#endif
static void
-mono_sgen_card_table_prepare_for_major_collection (void)
+sgen_card_table_prepare_for_major_collection (void)
{
/*XXX we could do this in 2 ways. using mincore or iterating over all sections/los objects */
sgen_major_collector_iterate_live_block_ranges (clear_cards);
- mono_sgen_los_iterate_live_block_ranges (clear_cards);
+ sgen_los_iterate_live_block_ranges (clear_cards);
}
static void
-mono_sgen_card_table_finish_minor_collection (void)
+sgen_card_table_finish_minor_collection (void)
{
sgen_card_tables_collect_stats (FALSE);
}
static void
-mono_sgen_card_table_finish_scan_remsets (void *start_nursery, void *end_nursery, SgenGrayQueue *queue)
+sgen_card_table_finish_scan_remsets (void *start_nursery, void *end_nursery, SgenGrayQueue *queue)
{
SGEN_TV_DECLARE (atv);
SGEN_TV_DECLARE (btv);
/*FIXME we should have a bit on each block/los object telling if the object have marked cards.*/
/*First we copy*/
sgen_major_collector_iterate_live_block_ranges (move_cards_to_shadow_table);
- mono_sgen_los_iterate_live_block_ranges (move_cards_to_shadow_table);
+ sgen_los_iterate_live_block_ranges (move_cards_to_shadow_table);
/*Then we clear*/
- mono_sgen_card_table_prepare_for_major_collection ();
+ sgen_card_table_prepare_for_major_collection ();
#endif
SGEN_TV_GETTIME (atv);
sgen_major_collector_scan_card_table (queue);
SGEN_TV_GETTIME (btv);
last_major_scan_time = SGEN_TV_ELAPSED (atv, btv);
major_card_scan_time += last_major_scan_time;
- mono_sgen_los_scan_card_table (queue);
+ sgen_los_scan_card_table (FALSE, queue);
SGEN_TV_GETTIME (atv);
last_los_scan_time = SGEN_TV_ELAPSED (btv, atv);
los_card_scan_time += last_los_scan_time;
return sgen_cardtable;
}
+gboolean
+mono_gc_card_table_nursery_check (void)
+{
+ return !major_collector.is_concurrent;
+}
+
#if 0
static void
collect_faulted_cards (void)
return (__builtin_ffsll (GUINT64_TO_LE(card)) - 1) / 8;
#else
int i;
- guint8 *ptr = (guint *) &card;
+ guint8 *ptr = (guint8 *) &card;
for (i = 0; i < sizeof (mword); ++i) {
if (ptr[i])
return i;
}
void
-sgen_cardtable_scan_object (char *obj, mword block_obj_size, guint8 *cards, SgenGrayQueue *queue)
+sgen_cardtable_scan_object (char *obj, mword block_obj_size, guint8 *cards,
+ gboolean always_copy_or_mark, SgenGrayQueue *queue)
{
MonoVTable *vt = (MonoVTable*)SGEN_LOAD_VTABLE (obj);
MonoClass *klass = vt->klass;
- CopyOrMarkObjectFunc copy_func = mono_sgen_get_copy_object ();
- ScanObjectFunc scan_object_func = mono_sgen_get_minor_scan_object ();
- ScanVTypeFunc scan_vtype_func = mono_sgen_get_minor_scan_vtype ();
HEAVY_STAT (++large_objects);
guint8 *card_data, *card_base;
guint8 *card_data_end;
char *obj_start = sgen_card_table_align_pointer (obj);
- mword obj_size = mono_sgen_par_object_get_size (vt, (MonoObject*)obj);
+ mword obj_size = sgen_par_object_get_size (vt, (MonoObject*)obj);
char *obj_end = obj + obj_size;
size_t card_count;
int extra_idx = 0;
int idx = (card_data - card_base) + extra_idx;
char *start = (char*)(obj_start + idx * CARD_SIZE_IN_BYTES);
char *card_end = start + CARD_SIZE_IN_BYTES;
- char *elem;
+ char *first_elem, *elem;
HEAVY_STAT (++los_marked_cards);
else
index = ARRAY_OBJ_INDEX (start, obj, elem_size);
- elem = (char*)mono_array_addr_with_size ((MonoArray*)obj, elem_size, index);
+ elem = first_elem = (char*)mono_array_addr_with_size ((MonoArray*)obj, elem_size, index);
if (klass->element_class->valuetype) {
+ ScanVTypeFunc scan_vtype_func = sgen_get_current_object_ops ()->scan_vtype;
+
for (; elem < card_end; elem += elem_size)
scan_vtype_func (elem, desc, queue);
} else {
+ CopyOrMarkObjectFunc copy_func = sgen_get_current_object_ops ()->copy_or_mark_object;
+
HEAVY_STAT (++los_array_cards);
for (; elem < card_end; elem += SIZEOF_VOID_P) {
gpointer new, old = *(gpointer*)elem;
- if (G_UNLIKELY (mono_sgen_ptr_in_nursery (old))) {
+ if ((always_copy_or_mark && old) || G_UNLIKELY (sgen_ptr_in_nursery (old))) {
HEAVY_STAT (++los_array_remsets);
copy_func ((void**)elem, queue);
new = *(gpointer*)elem;
- if (G_UNLIKELY (mono_sgen_ptr_in_nursery (new)))
- mono_sgen_add_to_global_remset (elem);
+ if (G_UNLIKELY (sgen_ptr_in_nursery (new)))
+ sgen_add_to_global_remset (elem, new);
}
}
}
+
+ binary_protocol_card_scan (first_elem, elem - first_elem);
}
#ifdef SGEN_HAVE_OVERLAPPING_CARDS
HEAVY_STAT (++bloby_objects);
if (cards) {
if (sgen_card_table_is_range_marked (cards, (mword)obj, block_obj_size))
- scan_object_func (obj, queue);
+ sgen_get_current_object_ops ()->scan_object (obj, queue);
} else if (sgen_card_table_region_begin_scanning ((mword)obj, block_obj_size)) {
- scan_object_func (obj, queue);
+ sgen_get_current_object_ops ()->scan_object (obj, queue);
}
+
+ binary_protocol_card_scan (obj, sgen_safe_object_get_size ((MonoObject*)obj));
}
}
#ifdef CARDTABLE_STATS
typedef struct {
- int total, marked, remarked;
+ int total, marked, remarked, gc_marked;
} card_stats;
static card_stats major_stats, los_stats;
{
mword end = start + size;
while (start <= end) {
+ guint8 card = *sgen_card_table_get_card_address (start);
++cur_stats->total;
- if (sgen_card_table_address_is_marked (start))
+ if (card)
++cur_stats->marked;
+ if (card == 2)
+ ++cur_stats->gc_marked;
start += CARD_SIZE_IN_BYTES;
}
}
{
mword end = start + size;
while (start <= end) {
- if (sgen_card_table_address_is_marked (start))
+ if (sgen_card_table_address_is_marked (start)) {
++cur_stats->remarked;
+ *sgen_card_table_get_card_address (start) = 2;
+ }
start += CARD_SIZE_IN_BYTES;
}
}
cur_stats = &major_stats;
sgen_major_collector_iterate_live_block_ranges (count_marked_cards);
cur_stats = &los_stats;
- mono_sgen_los_iterate_live_block_ranges (count_marked_cards);
+ sgen_los_iterate_live_block_ranges (count_marked_cards);
} else {
cur_stats = &major_stats;
- sgen_major_collector_iterate_live_block_ranges (count_marked_cards);
+ sgen_major_collector_iterate_live_block_ranges (count_remarked_cards);
cur_stats = &los_stats;
- mono_sgen_los_iterate_live_block_ranges (count_remarked_cards);
- printf ("cards major (t %d m %d r %d) los (t %d m %d r %d) major_scan %.2fms los_scan %.2fms\n",
- major_stats.total, major_stats.marked, major_stats.remarked,
- los_stats.total, los_stats.marked, los_stats.remarked,
+ sgen_los_iterate_live_block_ranges (count_remarked_cards);
+ printf ("cards major (t %d m %d g %d r %d) los (t %d m %d g %d r %d) major_scan %.2fms los_scan %.2fms\n",
+ major_stats.total, major_stats.marked, major_stats.gc_marked, major_stats.remarked,
+ los_stats.total, los_stats.marked, los_stats.gc_marked, los_stats.remarked,
last_major_scan_time / 1000.0, last_los_scan_time / 1000.0);
}
#endif
void
sgen_card_table_init (SgenRemeberedSet *remset)
{
- sgen_cardtable = mono_sgen_alloc_os_memory (CARD_COUNT_IN_BYTES, TRUE);
+ sgen_cardtable = sgen_alloc_os_memory (CARD_COUNT_IN_BYTES, SGEN_ALLOC_INTERNAL | SGEN_ALLOC_ACTIVATE, "card table");
#ifdef SGEN_HAVE_OVERLAPPING_CARDS
- sgen_shadow_cardtable = mono_sgen_alloc_os_memory (CARD_COUNT_IN_BYTES, TRUE);
+ sgen_shadow_cardtable = sgen_alloc_os_memory (CARD_COUNT_IN_BYTES, SGEN_ALLOC_INTERNAL | SGEN_ALLOC_ACTIVATE, "shadow card table");
#endif
#ifdef HEAVY_STATISTICS
mono_counters_register ("cardtable los scan time", MONO_COUNTER_GC | MONO_COUNTER_TIME_INTERVAL, &los_card_scan_time);
- remset->wbarrier_set_field = mono_sgen_card_table_wbarrier_set_field;
- remset->wbarrier_set_arrayref = mono_sgen_card_table_wbarrier_set_arrayref;
- remset->wbarrier_arrayref_copy = mono_sgen_card_table_wbarrier_arrayref_copy;
- remset->wbarrier_value_copy = mono_sgen_card_table_wbarrier_value_copy;
- remset->wbarrier_object_copy = mono_sgen_card_table_wbarrier_object_copy;
- remset->wbarrier_generic_nostore = mono_sgen_card_table_wbarrier_generic_nostore;
- remset->record_pointer = mono_sgen_card_table_record_pointer;
+ remset->wbarrier_set_field = sgen_card_table_wbarrier_set_field;
+ remset->wbarrier_set_arrayref = sgen_card_table_wbarrier_set_arrayref;
+ remset->wbarrier_arrayref_copy = sgen_card_table_wbarrier_arrayref_copy;
+ remset->wbarrier_value_copy = sgen_card_table_wbarrier_value_copy;
+ remset->wbarrier_object_copy = sgen_card_table_wbarrier_object_copy;
+ remset->wbarrier_generic_nostore = sgen_card_table_wbarrier_generic_nostore;
+ remset->record_pointer = sgen_card_table_record_pointer;
- remset->finish_scan_remsets = mono_sgen_card_table_finish_scan_remsets;
+ remset->finish_scan_remsets = sgen_card_table_finish_scan_remsets;
- remset->finish_minor_collection = mono_sgen_card_table_finish_minor_collection;
- remset->prepare_for_major_collection = mono_sgen_card_table_prepare_for_major_collection;
+ remset->finish_minor_collection = sgen_card_table_finish_minor_collection;
+ remset->prepare_for_major_collection = sgen_card_table_prepare_for_major_collection;
- remset->find_address = mono_sgen_card_table_find_address;
+ remset->find_address = sgen_card_table_find_address;
}
#else
#endif
-#endif /*HAVE_SGEN_GC*/
\ No newline at end of file
+#endif /*HAVE_SGEN_GC*/
projects / mono.git / blobdiff