#include "metadata/sgen-pinning.h"
#include "metadata/sgen-workers.h"
-#define SGEN_HAVE_CONCURRENT_MARK
-
-#define MS_BLOCK_SIZE (16*1024)
-#define MS_BLOCK_SIZE_SHIFT 14
+#if defined(ARCH_MIN_MS_BLOCK_SIZE) && defined(ARCH_MIN_MS_BLOCK_SIZE_SHIFT)
+#define MS_BLOCK_SIZE ARCH_MIN_MS_BLOCK_SIZE
+#define MS_BLOCK_SIZE_SHIFT ARCH_MIN_MS_BLOCK_SIZE_SHIFT
+#else
+#define MS_BLOCK_SIZE_SHIFT 14 /* INT FASTENABLE */
+#define MS_BLOCK_SIZE (1 << MS_BLOCK_SIZE_SHIFT)
+#endif
#define MAJOR_SECTION_SIZE MS_BLOCK_SIZE
#define CARDS_PER_BLOCK (MS_BLOCK_SIZE / CARD_SIZE_IN_BYTES)
* of a block is the MSBlockHeader, then opional padding, then come
* the objects, so this must be >= sizeof (MSBlockHeader).
*/
-#define BLOCK_INFO_IN_HEADER
#define MS_BLOCK_SKIP ((sizeof (MSBlockHeader) + 15) & ~15)
#define MS_BLOCK_FREE (MS_BLOCK_SIZE - MS_BLOCK_SKIP)
unsigned int has_pinned : 1; /* means cannot evacuate */
unsigned int is_to_space : 1;
unsigned int swept : 1;
-#ifndef BLOCK_INFO_IN_HEADER
- char *block;
-#endif
void **free_list;
MSBlockInfo *next_free;
size_t pin_queue_first_entry;
size_t pin_queue_last_entry;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
guint8 *cardtable_mod_union;
-#endif
mword mark_words [MS_NUM_MARK_WORDS];
};
-#ifdef BLOCK_INFO_IN_HEADER
#define MS_BLOCK_FOR_BLOCK_INFO(b) ((char*)(b))
-#else
-#define MS_BLOCK_FOR_BLOCK_INFO(b) ((b)->block)
-#endif
#define MS_BLOCK_OBJ(b,i) (MS_BLOCK_FOR_BLOCK_INFO(b) + MS_BLOCK_SKIP + (b)->obj_size * (i))
#define MS_BLOCK_OBJ_FOR_SIZE(b,i,obj_size) (MS_BLOCK_FOR_BLOCK_INFO(b) + MS_BLOCK_SKIP + (obj_size) * (i))
#define MS_BLOCK_DATA_FOR_OBJ(o) ((char*)((mword)(o) & ~(mword)(MS_BLOCK_SIZE - 1)))
typedef struct {
-#ifdef BLOCK_INFO_IN_HEADER
MSBlockInfo info;
-#else
- MSBlockInfo *info;
-#endif
} MSBlockHeader;
-#ifdef BLOCK_INFO_IN_HEADER
#define MS_BLOCK_FOR_OBJ(o) (&((MSBlockHeader*)MS_BLOCK_DATA_FOR_OBJ ((o)))->info)
-#else
-#define MS_BLOCK_FOR_OBJ(o) (((MSBlockHeader*)MS_BLOCK_DATA_FOR_OBJ ((o)))->info)
-#endif
/* object index will always be small */
#define MS_BLOCK_OBJ_INDEX(o,b) ((int)(((char*)(o) - (MS_BLOCK_FOR_BLOCK_INFO(b) + MS_BLOCK_SKIP)) / (b)->obj_size))
#define MS_OBJ_ALLOCED(o,b) (*(void**)(o) && (*(char**)(o) < MS_BLOCK_FOR_BLOCK_INFO (b) || *(char**)(o) >= MS_BLOCK_FOR_BLOCK_INFO (b) + MS_BLOCK_SIZE))
-#define MS_BLOCK_OBJ_SIZE_FACTOR (sqrt (2.0))
+#define MS_BLOCK_OBJ_SIZE_FACTOR (pow (2.0, 1.0 / 3))
/*
* This way we can lookup block object size indexes for sizes up to
#define MS_BLOCK_TYPE_MAX 4
static gboolean *evacuate_block_obj_sizes;
-static float evacuation_threshold = 0.0f;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
-static float concurrent_evacuation_threshold = 0.0f;
+static float evacuation_threshold = 0.666f;
+static float concurrent_evacuation_threshold = 0.666f;
static gboolean want_evacuation = FALSE;
-#endif
static gboolean lazy_sweep = TRUE;
static gboolean have_swept;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
static gboolean concurrent_mark;
-#endif
#define BLOCK_IS_TAGGED_HAS_REFERENCES(bl) SGEN_POINTER_IS_TAGGED_1 ((bl))
#define BLOCK_TAG_HAS_REFERENCES(bl) SGEN_POINTER_TAG_1 ((bl))
/* one free block list for each block object size */
static MSBlockInfo **free_block_lists [MS_BLOCK_TYPE_MAX];
-static long long stat_major_blocks_alloced = 0;
-static long long stat_major_blocks_freed = 0;
-static long long stat_major_blocks_lazy_swept = 0;
-static long long stat_major_objects_evacuated = 0;
+static guint64 stat_major_blocks_alloced = 0;
+static guint64 stat_major_blocks_freed = 0;
+static guint64 stat_major_blocks_lazy_swept = 0;
+static guint64 stat_major_objects_evacuated = 0;
#if SIZEOF_VOID_P != 8
-static long long stat_major_blocks_freed_ideal = 0;
-static long long stat_major_blocks_freed_less_ideal = 0;
-static long long stat_major_blocks_freed_individual = 0;
-static long long stat_major_blocks_alloced_less_ideal = 0;
+static guint64 stat_major_blocks_freed_ideal = 0;
+static guint64 stat_major_blocks_freed_less_ideal = 0;
+static guint64 stat_major_blocks_freed_individual = 0;
+static guint64 stat_major_blocks_alloced_less_ideal = 0;
#endif
#ifdef SGEN_COUNT_NUMBER_OF_MAJOR_OBJECTS_MARKED
-static long long num_major_objects_marked = 0;
+static guint64 num_major_objects_marked = 0;
#define INC_NUM_MAJOR_OBJECTS_MARKED() (++num_major_objects_marked)
#else
#define INC_NUM_MAJOR_OBJECTS_MARKED()
if (!sgen_memgov_try_alloc_space (MS_BLOCK_SIZE, SPACE_MAJOR))
return FALSE;
-#ifdef BLOCK_INFO_IN_HEADER
info = (MSBlockInfo*)ms_get_empty_block ();
-#else
- {
- MSBlockHeader *header;
- info = sgen_alloc_internal (INTERNAL_MEM_MS_BLOCK_INFO);
- info->block = ms_get_empty_block ();
- header = (MSBlockHeader*)info->block;
- header->info = info;
- }
-#endif
SGEN_ASSERT (9, count >= 2, "block with %d objects, it must hold at least 2", count);
*/
info->is_to_space = (sgen_get_current_collection_generation () == GENERATION_OLD);
info->swept = 1;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
info->cardtable_mod_union = NULL;
-#endif
update_heap_boundaries_for_block (info);
#define LOAD_VTABLE SGEN_LOAD_VTABLE
-#ifdef SGEN_MARK_ON_ENQUEUE
#define MS_MARK_OBJECT_AND_ENQUEUE_CHECKED(obj,desc,block,queue) do { \
int __word, __bit; \
MS_CALC_MARK_BIT (__word, __bit, (obj)); \
INC_NUM_MAJOR_OBJECTS_MARKED (); \
} \
} while (0)
-#define MS_PAR_MARK_OBJECT_AND_ENQUEUE(obj,desc,block,queue) do { \
- int __word, __bit; \
- gboolean __was_marked; \
- SGEN_ASSERT (9, MS_OBJ_ALLOCED ((obj), (block)), "object %p not allocated", obj); \
- MS_CALC_MARK_BIT (__word, __bit, (obj)); \
- MS_PAR_SET_MARK_BIT (__was_marked, (block), __word, __bit); \
- if (!__was_marked) { \
- if (sgen_gc_descr_has_references (desc)) \
- GRAY_OBJECT_ENQUEUE ((queue), (obj), (desc)); \
- binary_protocol_mark ((obj), (gpointer)LOAD_VTABLE ((obj)), sgen_safe_object_get_size ((MonoObject*)(obj))); \
- INC_NUM_MAJOR_OBJECTS_MARKED (); \
- } \
- } while (0)
-#else
-#define MS_MARK_OBJECT_AND_ENQUEUE_CHECKED(obj,desc,block,queue) do { \
- int __word, __bit; \
- SGEN_ASSERT (0, sgen_get_current_collection_generation () == GENERATION_OLD, "Can't majorly enqueue objects when doing minor collection"); \
- MS_CALC_MARK_BIT (__word, __bit, (obj)); \
- if (MS_OBJ_ALLOCED ((obj), (block))) { \
- if (sgen_gc_descr_has_references (desc)) { \
- GRAY_OBJECT_ENQUEUE ((queue), (obj), (desc)); \
- } else { \
- MS_SET_MARK_BIT ((block), __word, __bit); \
- binary_protocol_mark ((obj), (gpointer)LOAD_VTABLE ((obj)), sgen_safe_object_get_size ((MonoObject*)(obj))); \
- } \
- INC_NUM_MAJOR_OBJECTS_MARKED (); \
- } \
- } while (0)
-#define MS_MARK_OBJECT_AND_ENQUEUE(obj,desc,block,queue) do { \
- int __word, __bit; \
- SGEN_ASSERT (0, sgen_get_current_collection_generation () == GENERATION_OLD, "Can't majorly enqueue objects when doing minor collection"); \
- MS_CALC_MARK_BIT (__word, __bit, (obj)); \
- SGEN_ASSERT (9, MS_OBJ_ALLOCED ((obj), (block)), "object %p not allocated", obj); \
- { \
- if (sgen_gc_descr_has_references (desc)) { \
- GRAY_OBJECT_ENQUEUE ((queue), (obj), (desc)); \
- } else { \
- MS_SET_MARK_BIT ((block), __word, __bit); \
- binary_protocol_mark ((obj), (gpointer)LOAD_VTABLE ((obj)), sgen_safe_object_get_size ((MonoObject*)(obj))); \
- } \
- INC_NUM_MAJOR_OBJECTS_MARKED (); \
- } \
- } while (0)
-#endif
static void
pin_major_object (char *obj, SgenGrayQueue *queue)
{
MSBlockInfo *block;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
if (concurrent_mark)
g_assert_not_reached ();
-#endif
block = MS_BLOCK_FOR_OBJ (obj);
block->has_pinned = TRUE;
#include "sgen-major-copy-object.h"
-#ifdef SGEN_HAVE_CONCURRENT_MARK
static void
-major_copy_or_mark_object_concurrent (void **ptr, void *obj, SgenGrayQueue *queue)
+major_copy_or_mark_object_with_evacuation_concurrent (void **ptr, void *obj, SgenGrayQueue *queue)
{
SGEN_ASSERT (9, sgen_concurrent_collection_in_progress (), "Why are we scanning concurrently when there's no concurrent collection on?");
SGEN_ASSERT (9, !sgen_workers_are_working () || sgen_is_worker_thread (mono_native_thread_id_get ()), "We must not scan from two threads at the same time!");
}
}
}
-#endif
-
-static void
-major_copy_or_mark_object (void **ptr, void *obj, SgenGrayQueue *queue)
-{
- MSBlockInfo *block;
-
- HEAVY_STAT (++stat_copy_object_called_major);
-
- SGEN_ASSERT (9, !sgen_concurrent_collection_in_progress (), "Why are we scanning non-concurrently when there's a concurrent collection on?");
-
- SGEN_ASSERT (9, obj, "null object from pointer %p", ptr);
- SGEN_ASSERT (9, current_collection_generation == GENERATION_OLD, "old gen parallel allocator called from a %d collection", current_collection_generation);
-
- if (sgen_ptr_in_nursery (obj)) {
- int word, bit;
- char *forwarded, *old_obj;
-
- if ((forwarded = SGEN_OBJECT_IS_FORWARDED (obj))) {
- SGEN_UPDATE_REFERENCE (ptr, forwarded);
- return;
- }
- if (SGEN_OBJECT_IS_PINNED (obj))
- return;
-
- /* An object in the nursery To Space has already been copied and grayed. Nothing to do. */
- if (sgen_nursery_is_to_space (obj))
- return;
-
- HEAVY_STAT (++stat_objects_copied_major);
-
- do_copy_object:
- old_obj = obj;
- obj = copy_object_no_checks (obj, queue);
- if (G_UNLIKELY (old_obj == obj)) {
- /*If we fail to evacuate an object we just stop doing it for a given block size as all other will surely fail too.*/
- if (!sgen_ptr_in_nursery (obj)) {
- int size_index;
- block = MS_BLOCK_FOR_OBJ (obj);
- size_index = block->obj_size_index;
- evacuate_block_obj_sizes [size_index] = FALSE;
- MS_MARK_OBJECT_AND_ENQUEUE (obj, sgen_obj_get_descriptor (obj), block, queue);
- }
- return;
- }
- SGEN_UPDATE_REFERENCE (ptr, obj);
-
- /*
- * FIXME: See comment for copy_object_no_checks(). If
- * we have that, we can let the allocation function
- * give us the block info, too, and we won't have to
- * re-fetch it.
- *
- * FIXME (2): We should rework this to avoid all those nursery checks.
- */
- /*
- * For the split nursery allocator the object might
- * still be in the nursery despite having being
- * promoted, in which case we can't mark it.
- */
- if (!sgen_ptr_in_nursery (obj)) {
- block = MS_BLOCK_FOR_OBJ (obj);
- MS_CALC_MARK_BIT (word, bit, obj);
- SGEN_ASSERT (9, !MS_MARK_BIT (block, word, bit), "object %p already marked", obj);
-#ifndef SGEN_MARK_ON_ENQUEUE
- if (!SGEN_VTABLE_HAS_REFERENCES (LOAD_VTABLE (obj)))
-#endif
- {
- MS_SET_MARK_BIT (block, word, bit);
- binary_protocol_mark (obj, (gpointer)LOAD_VTABLE (obj), sgen_safe_object_get_size ((MonoObject*)obj));
- }
- }
- } else {
- char *forwarded;
- mword objsize;
-
- /*
- * If we have don't have a fixed heap we cannot know
- * whether an object is in the LOS or in the small
- * object major heap without checking its size. To do
- * that, however, we need to know that we actually
- * have a valid object, not a forwarding pointer, so
- * we have to do this check first.
- */
- if ((forwarded = SGEN_OBJECT_IS_FORWARDED (obj))) {
- SGEN_UPDATE_REFERENCE (ptr, forwarded);
- return;
- }
-
- objsize = SGEN_ALIGN_UP (sgen_safe_object_get_size ((MonoObject*)obj));
-
- if (objsize <= SGEN_MAX_SMALL_OBJ_SIZE) {
- int size_index;
- gboolean evacuate;
-
- block = MS_BLOCK_FOR_OBJ (obj);
- size_index = block->obj_size_index;
- evacuate = evacuate_block_obj_sizes [size_index];
-
- if (evacuate && !block->has_pinned) {
- g_assert (!SGEN_OBJECT_IS_PINNED (obj));
- if (block->is_to_space)
- return;
- HEAVY_STAT (++stat_major_objects_evacuated);
- goto do_copy_object;
- } else {
- MS_MARK_OBJECT_AND_ENQUEUE (obj, sgen_obj_get_descriptor (obj), block, queue);
- }
- } else {
- if (sgen_los_object_is_pinned (obj))
- return;
- binary_protocol_pin (obj, (gpointer)SGEN_LOAD_VTABLE (obj), sgen_safe_object_get_size ((MonoObject*)obj));
-
-#ifdef ENABLE_DTRACE
- if (G_UNLIKELY (MONO_GC_OBJ_PINNED_ENABLED ())) {
- MonoVTable *vt = (MonoVTable*)SGEN_LOAD_VTABLE (obj);
- MONO_GC_OBJ_PINNED ((mword)obj, sgen_safe_object_get_size (obj), vt->klass->name_space, vt->klass->name, GENERATION_OLD);
- }
-#endif
-
-#ifdef SGEN_MARK_ON_ENQUEUE
- sgen_los_pin_object (obj);
-#endif
- if (SGEN_OBJECT_HAS_REFERENCES (obj))
- GRAY_OBJECT_ENQUEUE (queue, obj, sgen_obj_get_descriptor (obj));
- }
- }
-}
-
-static void
-major_copy_or_mark_object_canonical (void **ptr, SgenGrayQueue *queue)
-{
- major_copy_or_mark_object (ptr, *ptr, queue);
-}
-
-#ifdef SGEN_HAVE_CONCURRENT_MARK
-static void
-major_copy_or_mark_object_concurrent_canonical (void **ptr, SgenGrayQueue *queue)
-{
- major_copy_or_mark_object_concurrent (ptr, *ptr, queue);
-}
-#endif
static long long
major_get_and_reset_num_major_objects_marked (void)
#endif
}
-#include "sgen-major-scan-object.h"
-
-#ifdef SGEN_HAVE_CONCURRENT_MARK
-#define SCAN_FOR_CONCURRENT_MARK
-#include "sgen-major-scan-object.h"
-#undef SCAN_FOR_CONCURRENT_MARK
-#endif
-
-#if !defined (FIXED_HEAP) && !defined (SGEN_PARALLEL_MARK)
-//#define USE_PREFETCH_QUEUE
-#define DESCRIPTOR_FAST_PATH
-
#ifdef HEAVY_STATISTICS
-static long long stat_optimized_copy;
-static long long stat_optimized_copy_nursery;
-static long long stat_optimized_copy_nursery_forwarded;
-static long long stat_optimized_copy_nursery_pinned;
-#ifdef SGEN_MARK_ON_ENQUEUE
-static long long stat_optimized_copy_major;
-static long long stat_optimized_copy_major_small_fast;
-static long long stat_optimized_copy_major_small_slow;
-static long long stat_optimized_copy_major_large;
-#endif
-static long long stat_optimized_major_mark;
-static long long stat_optimized_major_mark_small;
-static long long stat_optimized_major_mark_large;
-static long long stat_optimized_major_scan;
-static long long stat_optimized_major_scan_no_refs;
-#ifdef DESCRIPTOR_FAST_PATH
-static long long stat_optimized_major_scan_fast;
-static long long stat_optimized_major_scan_slow;
-#endif
-
-static long long stat_drain_prefetch_fills;
-static long long stat_drain_prefetch_fill_failures;
-static long long stat_drain_loops;
-#endif
+static guint64 stat_optimized_copy;
+static guint64 stat_optimized_copy_nursery;
+static guint64 stat_optimized_copy_nursery_forwarded;
+static guint64 stat_optimized_copy_nursery_pinned;
+static guint64 stat_optimized_copy_major;
+static guint64 stat_optimized_copy_major_small_fast;
+static guint64 stat_optimized_copy_major_small_slow;
+static guint64 stat_optimized_copy_major_large;
+static guint64 stat_optimized_copy_major_forwarded;
+static guint64 stat_optimized_copy_major_small_evacuate;
+static guint64 stat_optimized_major_scan;
+static guint64 stat_optimized_major_scan_no_refs;
+
+static guint64 stat_drain_prefetch_fills;
+static guint64 stat_drain_prefetch_fill_failures;
+static guint64 stat_drain_loops;
+#endif
+
+static void major_scan_object_with_evacuation (char *start, mword desc, SgenGrayQueue *queue);
+
+#define COPY_OR_MARK_FUNCTION_NAME major_copy_or_mark_object_no_evacuation
+#define SCAN_OBJECT_FUNCTION_NAME major_scan_object_no_evacuation
+#define DRAIN_GRAY_STACK_FUNCTION_NAME drain_gray_stack_no_evacuation
+#include "sgen-marksweep-drain-gray-stack.h"
+
+#define COPY_OR_MARK_WITH_EVACUATION
+#define COPY_OR_MARK_FUNCTION_NAME major_copy_or_mark_object_with_evacuation
+#define SCAN_OBJECT_FUNCTION_NAME major_scan_object_with_evacuation
+#define DRAIN_GRAY_STACK_FUNCTION_NAME drain_gray_stack_with_evacuation
+#include "sgen-marksweep-drain-gray-stack.h"
-/* Returns whether the object is still in the nursery. */
-static inline MONO_ALWAYS_INLINE gboolean
-optimized_copy_or_mark_object (void **ptr, void *obj, SgenGrayQueue *queue)
+static gboolean
+drain_gray_stack (ScanCopyContext ctx)
{
-#ifdef SGEN_MARK_ON_ENQUEUE
- MSBlockInfo *block;
-#endif
-
-#ifdef HEAVY_STATISTICS
- ++stat_optimized_copy;
- {
- char *forwarded;
- mword desc;
- if ((forwarded = SGEN_OBJECT_IS_FORWARDED (obj)))
- desc = sgen_obj_get_descriptor_safe (forwarded);
- else
- desc = sgen_obj_get_descriptor_safe (obj);
-
- sgen_descriptor_count_copied_object (desc);
- }
-#endif
-
- SGEN_ASSERT (9, obj, "null object from pointer %p", ptr);
- SGEN_ASSERT (9, current_collection_generation == GENERATION_OLD, "old gen parallel allocator called from a %d collection", current_collection_generation);
-
- if (sgen_ptr_in_nursery (obj)) {
-#ifdef SGEN_MARK_ON_ENQUEUE
- int word, bit;
-#endif
- char *forwarded, *old_obj;
- mword vtable_word = *(mword*)obj;
-
- HEAVY_STAT (++stat_optimized_copy_nursery);
-
- if (SGEN_VTABLE_IS_PINNED (vtable_word)) {
- HEAVY_STAT (++stat_optimized_copy_nursery_pinned);
- return TRUE;
- }
- if ((forwarded = SGEN_VTABLE_IS_FORWARDED (vtable_word))) {
- HEAVY_STAT (++stat_optimized_copy_nursery_forwarded);
- *ptr = forwarded;
- return FALSE;
- }
-
- old_obj = obj;
- obj = copy_object_no_checks (obj, queue);
- SGEN_ASSERT (0, old_obj != obj, "Cannot handle copy object failure.");
- HEAVY_STAT (++stat_objects_copied_major);
- *ptr = obj;
-
-#ifdef SGEN_MARK_ON_ENQUEUE
- /*
- * FIXME: See comment for copy_object_no_checks(). If
- * we have that, we can let the allocation function
- * give us the block info, too, and we won't have to
- * re-fetch it.
- *
- * FIXME (2): We should rework this to avoid all those nursery checks.
- */
- /*
- * For the split nursery allocator the object might
- * still be in the nursery despite having being
- * promoted, in which case we can't mark it.
- */
- block = MS_BLOCK_FOR_OBJ (obj);
- MS_CALC_MARK_BIT (word, bit, obj);
- SGEN_ASSERT (9, !MS_MARK_BIT (block, word, bit), "object %p already marked", obj);
- MS_SET_MARK_BIT (block, word, bit);
- binary_protocol_mark (obj, (gpointer)LOAD_VTABLE (obj), sgen_safe_object_get_size ((MonoObject*)obj));
-#endif
-
- return FALSE;
- } else {
-#ifdef SGEN_MARK_ON_ENQUEUE
- mword vtable_word = *(mword*)obj;
- mword desc = sgen_vtable_get_descriptor ((MonoVTable*)vtable_word);
- int type = desc & 7;
-
- HEAVY_STAT (++stat_optimized_copy_major);
-
- if (type <= DESC_TYPE_MAX_SMALL_OBJ) {
- int __word, __bit;
-
- HEAVY_STAT (++stat_optimized_copy_major_small_fast);
-
- block = MS_BLOCK_FOR_OBJ (obj);
- MS_CALC_MARK_BIT (__word, __bit, (obj));
- if (!MS_MARK_BIT ((block), __word, __bit)) {
- MS_SET_MARK_BIT ((block), __word, __bit);
- if (sgen_gc_descr_has_references (desc))
- GRAY_OBJECT_ENQUEUE (queue, obj, desc);
- }
- } else if (SGEN_ALIGN_UP (sgen_safe_object_get_size ((MonoObject*)obj)) <= SGEN_MAX_SMALL_OBJ_SIZE ) {
- HEAVY_STAT (++stat_optimized_copy_major_small_slow);
-
- block = MS_BLOCK_FOR_OBJ (obj);
- MS_MARK_OBJECT_AND_ENQUEUE (obj, desc, block, queue);
- } else {
- HEAVY_STAT (++stat_optimized_copy_major_large);
-
- if (sgen_los_object_is_pinned (obj))
- return FALSE;
- binary_protocol_pin (obj, (gpointer)SGEN_LOAD_VTABLE (obj), sgen_safe_object_get_size ((MonoObject*)obj));
-
- sgen_los_pin_object (obj);
- if (SGEN_OBJECT_HAS_REFERENCES (obj))
- GRAY_OBJECT_ENQUEUE (queue, obj, sgen_obj_get_descriptor (obj));
+ gboolean evacuation = FALSE;
+ int i;
+ for (i = 0; i < num_block_obj_sizes; ++i) {
+ if (evacuate_block_obj_sizes [i]) {
+ evacuation = TRUE;
+ break;
}
- return FALSE;
-#else
- GRAY_OBJECT_ENQUEUE (queue, obj, 0);
-#endif
}
- return FALSE;
-}
-static inline void
-sgen_gray_object_dequeue_fast (SgenGrayQueue *queue, char** obj, mword *desc) {
- GrayQueueEntry *cursor = queue->prefetch_cursor;
- GrayQueueEntry *const end = queue->prefetch + SGEN_GRAY_QUEUE_PREFETCH_SIZE;
- *obj = cursor->obj;
-#ifdef SGEN_GRAY_QUEUE_HAVE_DESCRIPTORS
- *desc = cursor->desc;
- GRAY_OBJECT_DEQUEUE (queue, &cursor->obj, &cursor->desc);
-#else
- GRAY_OBJECT_DEQUEUE (queue, &cursor->obj, NULL);
-#endif
+ if (evacuation)
+ return drain_gray_stack_with_evacuation (ctx);
+ else
+ return drain_gray_stack_no_evacuation (ctx);
+}
-#if !defined (SGEN_MARK_ON_ENQUEUE) && defined (BLOCK_INFO_IN_HEADER)
- {
- int word, bit;
- MSBlockInfo *block = (MSBlockInfo*)MS_BLOCK_DATA_FOR_OBJ (cursor->obj);
- MS_CALC_MARK_BIT (word, bit, cursor->obj);
- PREFETCH_WRITE (&block->mark_words [word]);
- }
-#endif
+#include "sgen-marksweep-scan-object-concurrent.h"
- PREFETCH_READ (cursor->obj);
- ++cursor;
- if (cursor == end)
- cursor = queue->prefetch;
- queue->prefetch_cursor = cursor;
+static void
+major_copy_or_mark_object_canonical (void **ptr, SgenGrayQueue *queue)
+{
+ major_copy_or_mark_object_with_evacuation (ptr, *ptr, queue);
}
-static gboolean
-drain_gray_stack (ScanCopyContext ctx)
+static void
+major_copy_or_mark_object_concurrent_canonical (void **ptr, SgenGrayQueue *queue)
{
- SgenGrayQueue *queue = ctx.queue;
-
- SGEN_ASSERT (0, ctx.scan_func == major_scan_object, "Wrong scan function");
-
-#ifdef USE_PREFETCH_QUEUE
- HEAVY_STAT (++stat_drain_prefetch_fills);
- if (!sgen_gray_object_fill_prefetch (queue)) {
- HEAVY_STAT (++stat_drain_prefetch_fill_failures);
- return TRUE;
- }
-#endif
-
- for (;;) {
- char *obj;
- mword desc;
- int type;
-
- HEAVY_STAT (++stat_drain_loops);
-
-#ifdef USE_PREFETCH_QUEUE
- sgen_gray_object_dequeue_fast (queue, &obj, &desc);
- if (!obj) {
- HEAVY_STAT (++stat_drain_prefetch_fills);
- if (!sgen_gray_object_fill_prefetch (queue)) {
- HEAVY_STAT (++stat_drain_prefetch_fill_failures);
- return TRUE;
- }
- continue;
- }
-#else
- GRAY_OBJECT_DEQUEUE (queue, &obj, &desc);
- if (!obj)
- return TRUE;
-#endif
-
-#ifndef SGEN_GRAY_QUEUE_HAVE_DESCRIPTORS
- desc = sgen_obj_get_descriptor_safe (obj);
-#endif
- type = desc & 7;
-
-#ifndef SGEN_MARK_ON_ENQUEUE
- HEAVY_STAT (++stat_optimized_major_mark);
-
- /* Mark object or, if already marked, don't process. */
- if (!sgen_ptr_in_nursery (obj)) {
- if (type <= DESC_TYPE_MAX_SMALL_OBJ || SGEN_ALIGN_UP (sgen_safe_object_get_size ((MonoObject*)obj)) <= SGEN_MAX_SMALL_OBJ_SIZE) {
- MSBlockInfo *block = MS_BLOCK_FOR_OBJ (obj);
- int __word, __bit;
-
- HEAVY_STAT (++stat_optimized_major_mark_small);
-
- MS_CALC_MARK_BIT (__word, __bit, (obj));
- if (MS_MARK_BIT ((block), __word, __bit))
- continue;
- MS_SET_MARK_BIT ((block), __word, __bit);
- } else {
- HEAVY_STAT (++stat_optimized_major_mark_large);
-
- if (sgen_los_object_is_pinned (obj))
- continue;
- sgen_los_pin_object (obj);
- }
- }
-#endif
-
-#ifdef HEAVY_STATISTICS
- ++stat_optimized_major_scan;
- if (!sgen_gc_descr_has_references (desc))
- ++stat_optimized_major_scan_no_refs;
-#endif
-
- /* Now scan the object. */
-
-#undef HANDLE_PTR
-#define HANDLE_PTR(ptr,obj) do { \
- void *__old = *(ptr); \
- if (__old) { \
- gboolean __still_in_nursery = optimized_copy_or_mark_object ((ptr), __old, queue); \
- if (G_UNLIKELY (__still_in_nursery && !sgen_ptr_in_nursery ((ptr)) && !SGEN_OBJECT_IS_CEMENTED (*(ptr)))) { \
- void *__copy = *(ptr); \
- sgen_add_to_global_remset ((ptr), __copy); \
- } \
- } \
- } while (0)
-
-#ifdef DESCRIPTOR_FAST_PATH
- if (type == DESC_TYPE_LARGE_BITMAP) {
- OBJ_LARGE_BITMAP_FOREACH_PTR (desc, obj);
-#ifdef HEAVY_STATISTICS
- sgen_descriptor_count_scanned_object (desc);
- ++stat_optimized_major_scan_fast;
-#endif
- } else
-#endif
- {
- char *start = obj;
-#ifdef HEAVY_STATISTICS
- ++stat_optimized_major_scan_slow;
- sgen_descriptor_count_scanned_object (desc);
-#endif
-#ifdef SGEN_HEAVY_BINARY_PROTOCOL
- add_scanned_object (start);
-#endif
-
-#include "sgen-scan-object.h"
- }
- }
+ major_copy_or_mark_object_with_evacuation_concurrent (ptr, *ptr, queue);
}
-#endif
static void
mark_pinned_objects_in_block (MSBlockInfo *block, SgenGrayQueue *queue)
int *slots_used = alloca (sizeof (int) * num_block_obj_sizes);
int *num_blocks = alloca (sizeof (int) * num_block_obj_sizes);
-#ifdef SGEN_HAVE_CONCURRENT_MARK
mword total_evacuate_heap = 0;
mword total_evacuate_saved = 0;
-#endif
for (i = 0; i < num_block_obj_sizes; ++i)
slots_available [i] = slots_used [i] = num_blocks [i] = 0;
count = MS_BLOCK_FREE / block->obj_size;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
if (block->cardtable_mod_union) {
sgen_free_internal_dynamic (block->cardtable_mod_union, CARDS_PER_BLOCK, INTERNAL_MEM_CARDTABLE_MOD_UNION);
block->cardtable_mod_union = NULL;
}
-#endif
/* Count marked objects in the block */
for (i = 0; i < MS_NUM_MARK_WORDS; ++i) {
DELETE_BLOCK_IN_FOREACH ();
binary_protocol_empty (MS_BLOCK_OBJ (block, 0), (char*)MS_BLOCK_OBJ (block, count) - (char*)MS_BLOCK_OBJ (block, 0));
-#if defined (FIXED_HEAP) || defined (BLOCK_INFO_IN_HEADER)
ms_free_block (block);
-#else
- ms_free_block (block->block);
- sgen_free_internal (block, INTERNAL_MEM_MS_BLOCK_INFO);
-#endif
--num_major_sections;
}
for (i = 0; i < num_block_obj_sizes; ++i) {
float usage = (float)slots_used [i] / (float)slots_available [i];
if (num_blocks [i] > 5 && usage < evacuation_threshold) {
- g_assert_not_reached ();
evacuate_block_obj_sizes [i] = TRUE;
/*
g_print ("slot size %d - %d of %d used\n",
} else {
evacuate_block_obj_sizes [i] = FALSE;
}
-#ifdef SGEN_HAVE_CONCURRENT_MARK
{
mword total_bytes = block_obj_sizes [i] * slots_available [i];
total_evacuate_heap += total_bytes;
if (evacuate_block_obj_sizes [i])
total_evacuate_saved += total_bytes - block_obj_sizes [i] * slots_used [i];
}
-#endif
}
-#ifdef SGEN_HAVE_CONCURRENT_MARK
want_evacuation = (float)total_evacuate_saved / (float)total_evacuate_heap > (1 - concurrent_evacuation_threshold);
-#endif
have_swept = TRUE;
}
static gboolean
major_handle_gc_param (const char *opt)
{
- /*
if (g_str_has_prefix (opt, "evacuation-threshold=")) {
const char *arg = strchr (opt, '=') + 1;
int percentage = atoi (arg);
}
evacuation_threshold = (float)percentage / 100.0f;
return TRUE;
- } else */
- if (!strcmp (opt, "lazy-sweep")) {
+ } else if (!strcmp (opt, "lazy-sweep")) {
lazy_sweep = TRUE;
return TRUE;
} else if (!strcmp (opt, "no-lazy-sweep")) {
}
#ifdef HEAVY_STATISTICS
-extern long long marked_cards;
-extern long long scanned_cards;
-extern long long scanned_objects;
-extern long long remarked_cards;
+extern guint64 marked_cards;
+extern guint64 scanned_cards;
+extern guint64 scanned_objects;
+extern guint64 remarked_cards;
#endif
#define CARD_WORDS_PER_BLOCK (CARDS_PER_BLOCK / SIZEOF_VOID_P)
gboolean has_references;
ScanObjectFunc scan_func = sgen_get_current_object_ops ()->scan_object;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
if (!concurrent_mark)
g_assert (!mod_union);
-#else
- g_assert (!mod_union);
-#endif
FOREACH_BLOCK_HAS_REFERENCES (block, has_references) {
int block_obj_size;
char *obj, *end, *base;
if (mod_union) {
-#ifdef SGEN_HAVE_CONCURRENT_MARK
cards = block->cardtable_mod_union;
/*
* This happens when the nursery
*/
if (!cards)
continue;
-#endif
} else {
/*We can avoid the extra copy since the remark cardtable was cleaned before */
#ifdef SGEN_HAVE_OVERLAPPING_CARDS
end = block_start + MS_BLOCK_SIZE;
base = sgen_card_table_align_pointer (obj);
+ cards += MS_BLOCK_SKIP >> CARD_BITS;
+
while (obj < end) {
size_t card_offset;
* sizes, they won't overflow the cardtable overlap modulus.
*/
if (mod_union) {
-#ifdef SGEN_HAVE_CONCURRENT_MARK
card_data = card_base = block->cardtable_mod_union;
/*
* This happens when the nursery
*/
if (!card_data)
continue;
-#else
- g_assert_not_reached ();
- card_data = NULL;
-#endif
} else {
card_data = card_base = sgen_card_table_get_card_scan_address ((mword)block_start);
}
card_data_end = card_data + CARDS_PER_BLOCK;
+ card_data += MS_BLOCK_SKIP >> CARD_BITS;
+
for (card_data = initial_skip_card (card_data); card_data < card_data_end; ++card_data) { //card_data = skip_card (card_data + 1, card_data_end)) {
size_t index;
size_t idx = card_data - card_base;
*num_marked_cards = marked_cards;
}
-#ifdef SGEN_HAVE_CONCURRENT_MARK
static void
update_cardtable_mod_union (void)
{
MSBlockInfo *block = MS_BLOCK_FOR_OBJ (obj);
return &block->cardtable_mod_union [(obj - (char*)sgen_card_table_align_pointer (MS_BLOCK_FOR_BLOCK_INFO (block))) >> CARD_BITS];
}
-#endif
static void
alloc_free_block_lists (MSBlockInfo ***lists)
collector->sweeps_lazily = lazy_sweep;
}
-#ifdef SGEN_HAVE_CONCURRENT_MARK
static void
sgen_marksweep_init_internal (SgenMajorCollector *collector, gboolean is_concurrent)
-#else // SGEN_HAVE_CONCURRENT_MARK
-#error unknown configuration
-#endif // SGEN_HAVE_CONCURRENT_MARK
{
int i;
for (i = 0; i < MS_NUM_FAST_BLOCK_OBJ_SIZE_INDEXES * 8; ++i)
g_assert (MS_BLOCK_OBJ_SIZE_INDEX (i) == ms_find_block_obj_size_index (i));
- mono_counters_register ("# major blocks allocated", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_alloced);
- mono_counters_register ("# major blocks freed", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_freed);
- mono_counters_register ("# major blocks lazy swept", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_lazy_swept);
- mono_counters_register ("# major objects evacuated", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_objects_evacuated);
+ mono_counters_register ("# major blocks allocated", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_alloced);
+ mono_counters_register ("# major blocks freed", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_freed);
+ mono_counters_register ("# major blocks lazy swept", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_lazy_swept);
+ mono_counters_register ("# major objects evacuated", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_objects_evacuated);
#if SIZEOF_VOID_P != 8
- mono_counters_register ("# major blocks freed ideally", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_freed_ideal);
- mono_counters_register ("# major blocks freed less ideally", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_freed_less_ideal);
- mono_counters_register ("# major blocks freed individually", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_freed_individual);
- mono_counters_register ("# major blocks allocated less ideally", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_major_blocks_alloced_less_ideal);
+ mono_counters_register ("# major blocks freed ideally", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_freed_ideal);
+ mono_counters_register ("# major blocks freed less ideally", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_freed_less_ideal);
+ mono_counters_register ("# major blocks freed individually", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_freed_individual);
+ mono_counters_register ("# major blocks allocated less ideally", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_major_blocks_alloced_less_ideal);
#endif
collector->section_size = MAJOR_SECTION_SIZE;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
concurrent_mark = is_concurrent;
if (is_concurrent) {
collector->is_concurrent = TRUE;
collector->want_synchronous_collection = &want_evacuation;
- } else
-#endif
- {
+ } else {
collector->is_concurrent = FALSE;
collector->want_synchronous_collection = NULL;
}
collector->pin_major_object = pin_major_object;
collector->scan_card_table = major_scan_card_table;
collector->iterate_live_block_ranges = (void*)(void*) major_iterate_live_block_ranges;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
if (is_concurrent) {
collector->update_cardtable_mod_union = update_cardtable_mod_union;
collector->get_cardtable_mod_union_for_object = major_get_cardtable_mod_union_for_object;
}
-#endif
collector->init_to_space = major_init_to_space;
collector->sweep = major_sweep;
collector->check_scan_starts = major_check_scan_starts;
collector->count_cards = major_count_cards;
collector->major_ops.copy_or_mark_object = major_copy_or_mark_object_canonical;
- collector->major_ops.scan_object = major_scan_object;
-#ifdef SGEN_HAVE_CONCURRENT_MARK
+ collector->major_ops.scan_object = major_scan_object_with_evacuation;
if (is_concurrent) {
collector->major_concurrent_ops.copy_or_mark_object = major_copy_or_mark_object_concurrent_canonical;
- collector->major_concurrent_ops.scan_object = major_scan_object_concurrent;
+ collector->major_concurrent_ops.scan_object = major_scan_object_no_mark_concurrent;
collector->major_concurrent_ops.scan_vtype = major_scan_vtype_concurrent;
}
-#endif
#if !defined (FIXED_HEAP) && !defined (SGEN_PARALLEL_MARK)
/* FIXME: this will not work with evacuation or the split nursery. */
collector->drain_gray_stack = drain_gray_stack;
#ifdef HEAVY_STATISTICS
- mono_counters_register ("Optimized copy", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy);
- mono_counters_register ("Optimized copy nursery", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_nursery);
- mono_counters_register ("Optimized copy nursery forwarded", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_nursery_forwarded);
- mono_counters_register ("Optimized copy nursery pinned", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_nursery_pinned);
-#ifdef SGEN_MARK_ON_ENQUEUE
- mono_counters_register ("Optimized copy major", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_major);
- mono_counters_register ("Optimized copy major small fast", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_major_small_fast);
- mono_counters_register ("Optimized copy major small slow", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_major_small_slow);
- mono_counters_register ("Optimized copy major large", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_copy_major_large);
-#endif
- mono_counters_register ("Optimized major mark", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_mark);
- mono_counters_register ("Optimized major mark small", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_mark_small);
- mono_counters_register ("Optimized major mark large", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_mark_large);
- mono_counters_register ("Optimized major scan", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_scan);
- mono_counters_register ("Optimized major scan no refs", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_scan_no_refs);
-#ifdef DESCRIPTOR_FAST_PATH
- mono_counters_register ("Optimized major scan slow", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_scan_slow);
- mono_counters_register ("Optimized major scan fast", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_optimized_major_scan_fast);
-#endif
+ mono_counters_register ("Optimized copy", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy);
+ mono_counters_register ("Optimized copy nursery", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_nursery);
+ mono_counters_register ("Optimized copy nursery forwarded", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_nursery_forwarded);
+ mono_counters_register ("Optimized copy nursery pinned", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_nursery_pinned);
+ mono_counters_register ("Optimized copy major", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_major);
+ mono_counters_register ("Optimized copy major small fast", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_major_small_fast);
+ mono_counters_register ("Optimized copy major small slow", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_major_small_slow);
+ mono_counters_register ("Optimized copy major large", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_copy_major_large);
+ mono_counters_register ("Optimized major scan", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_major_scan);
+ mono_counters_register ("Optimized major scan no refs", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_optimized_major_scan_no_refs);
- mono_counters_register ("Gray stack drain loops", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_drain_loops);
- mono_counters_register ("Gray stack prefetch fills", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_drain_prefetch_fills);
- mono_counters_register ("Gray stack prefetch failures", MONO_COUNTER_GC | MONO_COUNTER_LONG, &stat_drain_prefetch_fill_failures);
+ mono_counters_register ("Gray stack drain loops", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_drain_loops);
+ mono_counters_register ("Gray stack prefetch fills", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_drain_prefetch_fills);
+ mono_counters_register ("Gray stack prefetch failures", MONO_COUNTER_GC | MONO_COUNTER_ULONG, &stat_drain_prefetch_fill_failures);
#endif
#endif
-#ifdef HEAVY_STATISTICS
+#ifdef SGEN_HEAVY_BINARY_PROTOCOL
mono_mutex_init (&scanned_objects_list_lock);
#endif
g_assert ((MS_BLOCK_SIZE % (8 * CARD_SIZE_IN_BYTES)) == 0);
}
-#ifdef SGEN_HAVE_CONCURRENT_MARK
void
sgen_marksweep_init (SgenMajorCollector *collector)
{
{
sgen_marksweep_init_internal (collector, TRUE);
}
-#endif
#endif
projects / mono.git / blobdiff