* Copyright 2011 Xamarin Inc (http://www.xamarin.com)
* 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.
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
#ifndef __MONO_SGENGC_H__
#define __MONO_SGENGC_H__
extern unsigned int sgen_global_stop_count;
+#define SGEN_ALIGN_UP_TO(val,align) (((val) + (align - 1)) & ~(align - 1))
+#define SGEN_ALIGN_DOWN_TO(val,align) ((val) & ~(align - 1))
+
#define SGEN_ALLOC_ALIGN 8
#define SGEN_ALLOC_ALIGN_BITS 3
/* s must be non-negative */
#define SGEN_CAN_ALIGN_UP(s) ((s) <= SIZE_MAX - (SGEN_ALLOC_ALIGN - 1))
-#define SGEN_ALIGN_UP(s) (((s)+(SGEN_ALLOC_ALIGN-1)) & ~(SGEN_ALLOC_ALIGN-1))
+#define SGEN_ALIGN_UP(s) SGEN_ALIGN_UP_TO(s, SGEN_ALLOC_ALIGN)
+#define SGEN_ALIGN_DOWN(s) SGEN_ALIGN_DOWN_TO(s, SGEN_ALLOC_ALIGN)
#if SIZEOF_VOID_P == 4
#define ONE_P 1
#define SGEN_POINTER_UNTAG_VTABLE(p) SGEN_POINTER_UNTAG_ALL((p))
/* returns NULL if not forwarded, or the forwarded address */
-#define SGEN_VTABLE_IS_FORWARDED(vtable) (SGEN_POINTER_IS_TAGGED_FORWARDED ((vtable)) ? SGEN_POINTER_UNTAG_VTABLE ((vtable)) : NULL)
-#define SGEN_OBJECT_IS_FORWARDED(obj) (SGEN_VTABLE_IS_FORWARDED (((mword*)(obj))[0]))
+#define SGEN_VTABLE_IS_FORWARDED(vtable) ((GCVTable *)(SGEN_POINTER_IS_TAGGED_FORWARDED ((vtable)) ? SGEN_POINTER_UNTAG_VTABLE ((vtable)) : NULL))
+#define SGEN_OBJECT_IS_FORWARDED(obj) ((GCObject *)SGEN_VTABLE_IS_FORWARDED (((mword*)(obj))[0]))
#define SGEN_VTABLE_IS_PINNED(vtable) SGEN_POINTER_IS_TAGGED_PINNED ((vtable))
#define SGEN_OBJECT_IS_PINNED(obj) (SGEN_VTABLE_IS_PINNED (((mword*)(obj))[0]))
* Since we set bits in the vtable, use the macro to load it from the pointer to
* an object that is potentially pinned.
*/
-#define SGEN_LOAD_VTABLE(obj) ((GCVTable)(SGEN_POINTER_UNTAG_ALL (SGEN_LOAD_VTABLE_UNCHECKED ((obj)))))
+#define SGEN_LOAD_VTABLE(obj) ((GCVTable)(SGEN_POINTER_UNTAG_ALL (SGEN_LOAD_VTABLE_UNCHECKED ((GCObject *)(obj)))))
/*
List of what each bit on of the vtable gc bits means.
typedef void (*CopyOrMarkObjectFunc) (GCObject**, SgenGrayQueue*);
typedef void (*ScanObjectFunc) (GCObject *obj, SgenDescriptor desc, SgenGrayQueue*);
typedef void (*ScanVTypeFunc) (GCObject *full_object, char *start, SgenDescriptor desc, SgenGrayQueue* BINARY_PROTOCOL_ARG (size_t size));
+typedef void (*ScanPtrFieldFunc) (GCObject *obj, GCObject **ptr, SgenGrayQueue* queue);
typedef gboolean (*DrainGrayStackFunc) (SgenGrayQueue *queue);
typedef struct {
CopyOrMarkObjectFunc copy_or_mark_object;
ScanObjectFunc scan_object;
ScanVTypeFunc scan_vtype;
+ ScanPtrFieldFunc scan_ptr_field;
/* Drain stack optimized for the above functions */
DrainGrayStackFunc drain_gray_stack;
/*FIXME add allocation function? */
void sgen_pin_stats_print_class_stats (void);
void sgen_sort_addresses (void **array, size_t size);
-void sgen_add_to_global_remset (gpointer ptr, gpointer obj);
+void sgen_add_to_global_remset (gpointer ptr, GCObject *obj);
int sgen_get_current_collection_generation (void);
gboolean sgen_collection_is_concurrent (void);
size_t num_unique_scanned_objects;
} ScannedObjectCounts;
+typedef enum {
+ CARDTABLE_SCAN_GLOBAL = 0,
+ CARDTABLE_SCAN_MOD_UNION = 1,
+ CARDTABLE_SCAN_MOD_UNION_PRECLEAN = CARDTABLE_SCAN_MOD_UNION | 2,
+} CardTableScanType;
+
typedef struct _SgenMajorCollector SgenMajorCollector;
struct _SgenMajorCollector {
size_t section_size;
void (*free_non_pinned_object) (GCObject *obj, size_t size);
void (*pin_objects) (SgenGrayQueue *queue);
void (*pin_major_object) (GCObject *obj, SgenGrayQueue *queue);
- void (*scan_card_table) (gboolean mod_union, ScanCopyContext ctx);
+ void (*scan_card_table) (CardTableScanType scan_type, ScanCopyContext ctx);
void (*iterate_live_block_ranges) (sgen_cardtable_block_callback callback);
void (*update_cardtable_mod_union) (void);
void (*init_to_space) (void);
void sgen_pin_object (GCObject *object, SgenGrayQueue *queue);
void sgen_set_pinned_from_failed_allocation (mword objsize);
-void sgen_ensure_free_space (size_t size);
+void sgen_ensure_free_space (size_t size, int generation);
void sgen_gc_collect (int generation);
void sgen_perform_collection (size_t requested_size, int generation_to_collect, const char *reason, gboolean wait_to_finish);
gboolean sgen_ptr_is_in_los (char *ptr, char **start);
void sgen_los_iterate_objects (IterateObjectCallbackFunc cb, void *user_data);
void sgen_los_iterate_live_block_ranges (sgen_cardtable_block_callback callback);
-void sgen_los_scan_card_table (gboolean mod_union, ScanCopyContext ctx);
+void sgen_los_scan_card_table (CardTableScanType scan_type, ScanCopyContext ctx);
void sgen_los_update_cardtable_mod_union (void);
void sgen_los_count_cards (long long *num_total_cards, long long *num_marked_cards);
gboolean sgen_los_is_valid_object (char *object);
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