#include <mono/metadata/sgen-conf.h>
#include <mono/metadata/sgen-archdep.h>
#include <mono/metadata/sgen-descriptor.h>
+#include <mono/metadata/sgen-gray.h>
#if defined(__MACH__)
#include <mach/mach_port.h>
CLEAR_AT_TLAB_CREATION
} NurseryClearPolicy;
-NurseryClearPolicy mono_sgen_get_nursery_clear_policy (void) MONO_INTERNAL;
+NurseryClearPolicy sgen_get_nursery_clear_policy (void) MONO_INTERNAL;
#define SGEN_TV_DECLARE(name) gint64 name
#define SGEN_TV_GETTIME(tv) tv = mono_100ns_ticks ()
mword data [MONO_ZERO_LEN_ARRAY];
};
+/*
+ * We're never actually using the first element. It's always set to
+ * NULL to simplify the elimination of consecutive duplicate
+ * entries.
+ */
+#define STORE_REMSET_BUFFER_SIZE 1023
+
+typedef struct _GenericStoreRememberedSet GenericStoreRememberedSet;
+struct _GenericStoreRememberedSet {
+ GenericStoreRememberedSet *next;
+ /* We need one entry less because the first entry of store
+ remset buffers is always a dummy and we don't copy it. */
+ gpointer data [STORE_REMSET_BUFFER_SIZE - 1];
+};
+
+/* we have 4 possible values in the low 2 bits */
+enum {
+ REMSET_LOCATION, /* just a pointer to the exact location */
+ REMSET_RANGE, /* range of pointer fields */
+ REMSET_OBJECT, /* mark all the object for scanning */
+ REMSET_VTYPE, /* a valuetype array described by a gc descriptor, a count and a size */
+ REMSET_TYPE_MASK = 0x3
+};
+
/* eventually share with MonoThread? */
struct _SgenThreadInfo {
MonoThreadInfo info;
#endif
int skip;
volatile int in_critical_region;
+ gboolean joined_stw;
gboolean doing_handshake;
gboolean thread_is_dying;
+ gboolean gc_disabled;
void *stack_end;
void *stack_start;
void *stack_start_limit;
#define LOCK_INTERRUPTION mono_mutex_lock (&interruption_mutex)
#define UNLOCK_INTERRUPTION mono_mutex_unlock (&interruption_mutex)
+/* FIXME: Use InterlockedAdd & InterlockedAdd64 to reduce the CAS cost. */
#define SGEN_CAS_PTR InterlockedCompareExchangePointer
#define SGEN_ATOMIC_ADD(x,i) do { \
int __old_x; \
__old_x = (x); \
} while (InterlockedCompareExchange (&(x), __old_x + (i), __old_x) != __old_x); \
} while (0)
+#define SGEN_ATOMIC_ADD_P(x,i) do { \
+ size_t __old_x; \
+ do { \
+ __old_x = (x); \
+ } while (InterlockedCompareExchangePointer ((void**)&(x), (void*)(__old_x + (i)), (void*)__old_x) != (void*)__old_x); \
+ } while (0)
+
#ifndef HOST_WIN32
/* we intercept pthread_create calls to know which threads exist */
extern int current_collection_generation;
-extern unsigned int mono_sgen_global_stop_count;
+extern unsigned int sgen_global_stop_count;
#define SGEN_ALLOC_ALIGN 8
#define SGEN_ALLOC_ALIGN_BITS 3
#define SGEN_PTR_IN_NURSERY(p,bits,start,end) ((char*)(p) >= (start) && (char*)(p) < (end))
#endif
+#ifdef USER_CONFIG
+
+/* good sizes are 512KB-1MB: larger ones increase a lot memzeroing time */
+#define DEFAULT_NURSERY_SIZE (sgen_nursery_size)
+extern int sgen_nursery_size MONO_INTERNAL;
+#ifdef SGEN_ALIGN_NURSERY
+/* The number of trailing 0 bits in DEFAULT_NURSERY_SIZE */
+#define DEFAULT_NURSERY_BITS (sgen_nursery_bits)
+extern int sgen_nursery_bits MONO_INTERNAL;
+#endif
+
+#else
+
+#define DEFAULT_NURSERY_SIZE (4*1024*1024)
+#ifdef SGEN_ALIGN_NURSERY
+#define DEFAULT_NURSERY_BITS 22
+#endif
+
+#endif
+
+#ifndef SGEN_ALIGN_NURSERY
+#define DEFAULT_NURSERY_BITS -1
+#endif
+
+extern char *sgen_nursery_start MONO_INTERNAL;
+extern char *sgen_nursery_end MONO_INTERNAL;
+
+static inline gboolean
+sgen_ptr_in_nursery (void *p)
+{
+ return SGEN_PTR_IN_NURSERY ((p), DEFAULT_NURSERY_BITS, sgen_nursery_start, sgen_nursery_end);
+}
+
+static inline char*
+sgen_get_nursery_start (void)
+{
+ return sgen_nursery_start;
+}
+
+static inline char*
+sgen_get_nursery_end (void)
+{
+ return sgen_nursery_end;
+}
+
/* Structure that corresponds to a MonoVTable: desc is a mword so requires
* no cast from a pointer to an integer
*/
*/
#define SGEN_LOAD_VTABLE(addr) ((*(mword*)(addr)) & ~SGEN_VTABLE_BITS_MASK)
-
-#define SGEN_GRAY_QUEUE_SECTION_SIZE (128 - 3)
-
-/*
- * This is a stack now instead of a queue, so the most recently added items are removed
- * first, improving cache locality, and keeping the stack size manageable.
- */
-typedef struct _GrayQueueSection GrayQueueSection;
-struct _GrayQueueSection {
- int end;
- GrayQueueSection *next;
- char *objects [SGEN_GRAY_QUEUE_SECTION_SIZE];
-};
-
-typedef struct _SgenGrayQueue SgenGrayQueue;
-
-typedef void (*GrayQueueAllocPrepareFunc) (SgenGrayQueue*);
-
-struct _SgenGrayQueue {
- GrayQueueSection *first;
- GrayQueueSection *free_list;
- int balance;
- GrayQueueAllocPrepareFunc alloc_prepare_func;
- void *alloc_prepare_data;
-};
-
-typedef void (*CopyOrMarkObjectFunc) (void**, SgenGrayQueue*);
-typedef void (*ScanObjectFunc) (char*, SgenGrayQueue*);
-typedef void (*ScanVTypeFunc) (char*, mword desc, SgenGrayQueue*);
-
#if SGEN_MAX_DEBUG_LEVEL >= 9
-#define GRAY_OBJECT_ENQUEUE mono_sgen_gray_object_enqueue
-#define GRAY_OBJECT_DEQUEUE(queue,o) ((o) = mono_sgen_gray_object_dequeue ((queue)))
+#define GRAY_OBJECT_ENQUEUE sgen_gray_object_enqueue
+#define GRAY_OBJECT_DEQUEUE(queue,o) ((o) = sgen_gray_object_dequeue ((queue)))
#else
#define GRAY_OBJECT_ENQUEUE(queue,o) do { \
if (G_UNLIKELY (!(queue)->first || (queue)->first->end == SGEN_GRAY_QUEUE_SECTION_SIZE)) \
- mono_sgen_gray_object_enqueue ((queue), (o)); \
+ sgen_gray_object_enqueue ((queue), (o)); \
else \
(queue)->first->objects [(queue)->first->end++] = (o); \
PREFETCH ((o)); \
if (!(queue)->first) \
(o) = NULL; \
else if (G_UNLIKELY ((queue)->first->end == 1)) \
- (o) = mono_sgen_gray_object_dequeue ((queue)); \
+ (o) = sgen_gray_object_dequeue ((queue)); \
else \
(o) = (queue)->first->objects [--(queue)->first->end]; \
} while (0)
#endif
-void mono_sgen_gray_object_enqueue (SgenGrayQueue *queue, char *obj) MONO_INTERNAL;
-char* mono_sgen_gray_object_dequeue (SgenGrayQueue *queue) MONO_INTERNAL;
+/*
+List of what each bit on of the vtable gc bits means.
+*/
+enum {
+ SGEN_GC_BIT_BRIDGE_OBJECT = 1,
+};
typedef void (*IterateObjectCallbackFunc) (char*, size_t, void*);
-void* mono_sgen_alloc_os_memory (size_t size, int activate) MONO_INTERNAL;
-void* mono_sgen_alloc_os_memory_aligned (mword size, mword alignment, gboolean activate) MONO_INTERNAL;
-void mono_sgen_free_os_memory (void *addr, size_t size) MONO_INTERNAL;
+void* sgen_alloc_os_memory (size_t size, int activate) MONO_INTERNAL;
+void* sgen_alloc_os_memory_aligned (mword size, mword alignment, gboolean activate) MONO_INTERNAL;
+void sgen_free_os_memory (void *addr, size_t size) MONO_INTERNAL;
-int mono_sgen_thread_handshake (BOOL suspend) MONO_INTERNAL;
-gboolean mono_sgen_suspend_thread (SgenThreadInfo *info) MONO_INTERNAL;
-gboolean mono_sgen_resume_thread (SgenThreadInfo *info) MONO_INTERNAL;
-void mono_sgen_wait_for_suspend_ack (int count) MONO_INTERNAL;
-gboolean mono_sgen_park_current_thread_if_doing_handshake (SgenThreadInfo *p) MONO_INTERNAL;
-void mono_sgen_os_init (void) MONO_INTERNAL;
+int sgen_thread_handshake (BOOL suspend) MONO_INTERNAL;
+gboolean sgen_suspend_thread (SgenThreadInfo *info) MONO_INTERNAL;
+gboolean sgen_resume_thread (SgenThreadInfo *info) MONO_INTERNAL;
+void sgen_wait_for_suspend_ack (int count) MONO_INTERNAL;
+gboolean sgen_park_current_thread_if_doing_handshake (SgenThreadInfo *p) MONO_INTERNAL;
+void sgen_os_init (void) MONO_INTERNAL;
-void mono_sgen_fill_thread_info_for_suspend (SgenThreadInfo *info) MONO_INTERNAL;
+void sgen_fill_thread_info_for_suspend (SgenThreadInfo *info) MONO_INTERNAL;
-gboolean mono_sgen_is_worker_thread (MonoNativeThreadId thread) MONO_INTERNAL;
+gboolean sgen_is_worker_thread (MonoNativeThreadId thread) MONO_INTERNAL;
-void mono_sgen_update_heap_boundaries (mword low, mword high) MONO_INTERNAL;
+void sgen_update_heap_boundaries (mword low, mword high) MONO_INTERNAL;
-void mono_sgen_register_major_sections_alloced (int num_sections) MONO_INTERNAL;
-mword mono_sgen_get_minor_collection_allowance (void) MONO_INTERNAL;
+void sgen_register_major_sections_alloced (int num_sections) MONO_INTERNAL;
+mword sgen_get_minor_collection_allowance (void) MONO_INTERNAL;
-void mono_sgen_scan_area_with_callback (char *start, char *end, IterateObjectCallbackFunc callback, void *data, gboolean allow_flags) MONO_INTERNAL;
-void mono_sgen_check_section_scan_starts (GCMemSection *section) MONO_INTERNAL;
+void sgen_scan_area_with_callback (char *start, char *end, IterateObjectCallbackFunc callback, void *data, gboolean allow_flags) MONO_INTERNAL;
+void sgen_check_section_scan_starts (GCMemSection *section) MONO_INTERNAL;
-/* Keep in sync with mono_sgen_dump_internal_mem_usage() in dump_heap()! */
+/* Keep in sync with sgen_dump_internal_mem_usage() in dump_heap()! */
enum {
INTERNAL_MEM_PIN_QUEUE,
INTERNAL_MEM_FRAGMENT,
GENERATION_MAX
};
-void mono_sgen_init_internal_allocator (void) MONO_INTERNAL;
-void mono_sgen_init_pinned_allocator (void) MONO_INTERNAL;
+void sgen_init_internal_allocator (void) MONO_INTERNAL;
+void sgen_init_pinned_allocator (void) MONO_INTERNAL;
+
+typedef struct _ObjectList ObjectList;
+struct _ObjectList {
+ MonoObject *obj;
+ ObjectList *next;
+};
+
+void sgen_report_internal_mem_usage (void) MONO_INTERNAL;
+void sgen_report_pinned_mem_usage (SgenPinnedAllocator *alc) MONO_INTERNAL;
+void sgen_dump_internal_mem_usage (FILE *heap_dump_file) MONO_INTERNAL;
+void sgen_dump_section (GCMemSection *section, const char *type) MONO_INTERNAL;
+void sgen_dump_occupied (char *start, char *end, char *section_start) MONO_INTERNAL;
+
+void sgen_register_moved_object (void *obj, void *destination) MONO_INTERNAL;
+
+void sgen_register_fixed_internal_mem_type (int type, size_t size) MONO_INTERNAL;
+
+void* sgen_alloc_internal (int type) MONO_INTERNAL;
+void sgen_free_internal (void *addr, int type) MONO_INTERNAL;
+
+void* sgen_alloc_internal_dynamic (size_t size, int type) MONO_INTERNAL;
+void sgen_free_internal_dynamic (void *addr, size_t size, int type) MONO_INTERNAL;
+
+void* sgen_alloc_pinned (SgenPinnedAllocator *allocator, size_t size) MONO_INTERNAL;
+void sgen_free_pinned (SgenPinnedAllocator *allocator, void *addr, size_t size) MONO_INTERNAL;
+
+
+void sgen_debug_printf (int level, const char *format, ...) MONO_INTERNAL;
+
+gboolean sgen_parse_environment_string_extract_number (const char *str, glong *out) MONO_INTERNAL;
+
+void sgen_pinned_scan_objects (SgenPinnedAllocator *alc, IterateObjectCallbackFunc callback, void *callback_data) MONO_INTERNAL;
+void sgen_pinned_scan_pinned_objects (SgenPinnedAllocator *alc, IterateObjectCallbackFunc callback, void *callback_data) MONO_INTERNAL;
+
+void sgen_pinned_update_heap_boundaries (SgenPinnedAllocator *alc) MONO_INTERNAL;
+
+void** sgen_find_optimized_pin_queue_area (void *start, void *end, int *num) MONO_INTERNAL;
+void sgen_find_section_pin_queue_start_end (GCMemSection *section) MONO_INTERNAL;
+void sgen_pin_objects_in_section (GCMemSection *section, SgenGrayQueue *queue) MONO_INTERNAL;
+
+void sgen_pin_stats_register_object (char *obj, size_t size);
+void sgen_pin_stats_register_global_remset (char *obj);
+void sgen_pin_stats_print_class_stats (void);
+
+void sgen_sort_addresses (void **array, int size) MONO_INTERNAL;
+void sgen_add_to_global_remset (gpointer ptr) MONO_INTERNAL;
+
+typedef void (*CopyOrMarkObjectFunc) (void**, SgenGrayQueue*);
+typedef void (*ScanObjectFunc) (char*, SgenGrayQueue*);
+typedef void (*ScanVTypeFunc) (char*, mword desc, SgenGrayQueue*);
+
+int sgen_get_current_collection_generation (void) MONO_INTERNAL;
+gboolean sgen_collection_is_parallel (void) MONO_INTERNAL;
+
+typedef struct {
+ CopyOrMarkObjectFunc copy_or_mark_object;
+ ScanObjectFunc scan_object;
+ ScanVTypeFunc scan_vtype;
+ /*FIXME add allocation function? */
+} SgenObjectOperations;
+
+SgenObjectOperations *sgen_get_current_object_ops (void) MONO_INTERNAL;
+
+typedef struct _SgenFragment SgenFragment;
+
+struct _SgenFragment {
+ SgenFragment *next;
+ char *fragment_start;
+ char *fragment_next; /* the current soft limit for allocation */
+ char *fragment_end;
+ SgenFragment *next_in_order; /* We use a different entry for all active fragments so we can avoid SMR. */
+};
+
+typedef struct {
+ SgenFragment *alloc_head; /* List head to be used when allocating memory. Walk with fragment_next. */
+ SgenFragment *region_head; /* List head of the region used by this allocator. Walk with next_in_order. */
+} SgenFragmentAllocator;
-void mono_sgen_report_internal_mem_usage (void) MONO_INTERNAL;
-void mono_sgen_report_pinned_mem_usage (SgenPinnedAllocator *alc) MONO_INTERNAL;
-void mono_sgen_dump_internal_mem_usage (FILE *heap_dump_file) MONO_INTERNAL;
-void mono_sgen_dump_section (GCMemSection *section, const char *type) MONO_INTERNAL;
-void mono_sgen_dump_occupied (char *start, char *end, char *section_start) MONO_INTERNAL;
+void sgen_fragment_allocator_add (SgenFragmentAllocator *allocator, char *start, char *end) MONO_INTERNAL;
+void sgen_fragment_allocator_release (SgenFragmentAllocator *allocator) MONO_INTERNAL;
+void* sgen_fragment_allocator_serial_alloc (SgenFragmentAllocator *allocator, size_t size) MONO_INTERNAL;
+void* sgen_fragment_allocator_par_alloc (SgenFragmentAllocator *allocator, size_t size) MONO_INTERNAL;
+void* sgen_fragment_allocator_serial_range_alloc (SgenFragmentAllocator *allocator, size_t desired_size, size_t minimum_size, size_t *out_alloc_size) MONO_INTERNAL;
+void* sgen_fragment_allocator_par_range_alloc (SgenFragmentAllocator *allocator, size_t desired_size, size_t minimum_size, size_t *out_alloc_size) MONO_INTERNAL;
+SgenFragment* sgen_fragment_allocator_alloc (void) MONO_INTERNAL;
+void sgen_clear_allocator_fragments (SgenFragmentAllocator *allocator) MONO_INTERNAL;
+void sgen_clear_range (char *start, char *end) MONO_INTERNAL;
-void mono_sgen_register_moved_object (void *obj, void *destination) MONO_INTERNAL;
-void mono_sgen_register_fixed_internal_mem_type (int type, size_t size) MONO_INTERNAL;
+/*
+This is a space/speed compromise as we need to make sure the from/to space check is both O(1)
+and only hit cache hot memory. On a 4Mb nursery it requires 1024 bytes, or 3% of your average
+L1 cache. On small configs with a 512kb nursery, this goes to 0.4%.
-void* mono_sgen_alloc_internal (int type) MONO_INTERNAL;
-void mono_sgen_free_internal (void *addr, int type) MONO_INTERNAL;
+Experimental results on how much space we waste with a 4Mb nursery:
-void* mono_sgen_alloc_internal_dynamic (size_t size, int type) MONO_INTERNAL;
-void mono_sgen_free_internal_dynamic (void *addr, size_t size, int type) MONO_INTERNAL;
+Note that the wastage applies to the half nursery, or 2Mb:
-void* mono_sgen_alloc_pinned (SgenPinnedAllocator *allocator, size_t size) MONO_INTERNAL;
-void mono_sgen_free_pinned (SgenPinnedAllocator *allocator, void *addr, size_t size) MONO_INTERNAL;
+Test 1 (compiling corlib):
+9: avg: 3.1k
+8: avg: 1.6k
+*/
+#define SGEN_TO_SPACE_GRANULE_BITS 9
+#define SGEN_TO_SPACE_GRANULE_IN_BYTES (1 << SGEN_TO_SPACE_GRANULE_BITS)
-void mono_sgen_debug_printf (int level, const char *format, ...) MONO_INTERNAL;
+extern char *sgen_space_bitmap MONO_INTERNAL;
+extern int sgen_space_bitmap_size MONO_INTERNAL;
-gboolean mono_sgen_parse_environment_string_extract_number (const char *str, glong *out) MONO_INTERNAL;
+static inline gboolean
+sgen_nursery_is_to_space (char *object)
+{
+ int idx = (object - sgen_nursery_start) >> SGEN_TO_SPACE_GRANULE_BITS;
+ int byte = idx / 8;
+ int bit = idx & 0x7;
-void mono_sgen_pinned_scan_objects (SgenPinnedAllocator *alc, IterateObjectCallbackFunc callback, void *callback_data) MONO_INTERNAL;
-void mono_sgen_pinned_scan_pinned_objects (SgenPinnedAllocator *alc, IterateObjectCallbackFunc callback, void *callback_data) MONO_INTERNAL;
+ DEBUG (4, g_assert (sgen_ptr_in_nursery (object)));
+ DEBUG (4, g_assert (byte < sgen_space_bitmap_size));
+
+ return (sgen_space_bitmap [byte] & (1 << bit)) != 0;
+}
-void mono_sgen_pinned_update_heap_boundaries (SgenPinnedAllocator *alc) MONO_INTERNAL;
+static inline gboolean
+sgen_nursery_is_from_space (char *object)
+{
+ return !sgen_nursery_is_to_space (object);
+}
-void** mono_sgen_find_optimized_pin_queue_area (void *start, void *end, int *num) MONO_INTERNAL;
-void mono_sgen_find_section_pin_queue_start_end (GCMemSection *section) MONO_INTERNAL;
-void mono_sgen_pin_objects_in_section (GCMemSection *section, SgenGrayQueue *queue) MONO_INTERNAL;
+static inline gboolean
+sgen_nursery_is_object_alive (char *obj)
+{
+ /* FIXME put this asserts under a non default level */
+ g_assert (sgen_ptr_in_nursery (obj));
-void mono_sgen_pin_stats_register_object (char *obj, size_t size);
-void mono_sgen_pin_stats_register_global_remset (char *obj);
-void mono_sgen_pin_stats_print_class_stats (void);
+ if (sgen_nursery_is_to_space (obj))
+ return TRUE;
-void mono_sgen_add_to_global_remset (gpointer ptr) MONO_INTERNAL;
+ if (SGEN_OBJECT_IS_PINNED (obj) || SGEN_OBJECT_IS_FORWARDED (obj))
+ return TRUE;
-int mono_sgen_get_current_collection_generation (void) MONO_INTERNAL;
-gboolean mono_sgen_nursery_collection_is_parallel (void) MONO_INTERNAL;
-CopyOrMarkObjectFunc mono_sgen_get_copy_object (void) MONO_INTERNAL;
-ScanObjectFunc mono_sgen_get_minor_scan_object (void) MONO_INTERNAL;
-ScanVTypeFunc mono_sgen_get_minor_scan_vtype (void) MONO_INTERNAL;
+ return FALSE;
+}
+
+typedef struct {
+ char* (*alloc_for_promotion) (char *obj, size_t objsize, gboolean has_references);
+ char* (*par_alloc_for_promotion) (char *obj, size_t objsize, gboolean has_references);
+
+ SgenObjectOperations serial_ops;
+ SgenObjectOperations parallel_ops;
+
+ void (*prepare_to_space) (char *to_space_bitmap, int space_bitmap_size);
+ void (*clear_fragments) (void);
+ SgenFragment* (*build_fragments_get_exclude_head) (void);
+ void (*build_fragments_release_exclude_head) (void);
+ void (*build_fragments_finish) (SgenFragmentAllocator *allocator);
+ void (*init_nursery) (SgenFragmentAllocator *allocator, char *start, char *end);
+
+ gboolean (*handle_gc_param) (const char *opt); /* Optional */
+ void (*print_gc_param_usage) (void); /* Optional */
+} SgenMinorCollector;
+
+extern SgenMinorCollector sgen_minor_collector;
+
+void sgen_simple_nursery_init (SgenMinorCollector *collector) MONO_INTERNAL;
+void sgen_split_nursery_init (SgenMinorCollector *collector) MONO_INTERNAL;
typedef void (*sgen_cardtable_block_callback) (mword start, mword size);
void sgen_major_collector_iterate_live_block_ranges (sgen_cardtable_block_callback callback) MONO_INTERNAL;
gboolean (*is_object_live) (char *obj);
void* (*alloc_small_pinned_obj) (size_t size, gboolean has_references);
void* (*alloc_degraded) (MonoVTable *vtable, size_t size);
- void (*copy_or_mark_object) (void **obj_slot, SgenGrayQueue *queue);
- void (*minor_scan_object) (char *start, SgenGrayQueue *queue);
- void (*nopar_minor_scan_object) (char *start, SgenGrayQueue *queue);
- void (*minor_scan_vtype) (char *start, mword desc, SgenGrayQueue *queue);
- void (*nopar_minor_scan_vtype) (char *start, mword desc, SgenGrayQueue *queue);
- void (*major_scan_object) (char *start, SgenGrayQueue *queue);
- void (*copy_object) (void **obj_slot, SgenGrayQueue *queue);
- void (*nopar_copy_object) (void **obj_slot, SgenGrayQueue *queue);
+
+ SgenObjectOperations major_ops;
+
void* (*alloc_object) (int size, gboolean has_references);
+ void* (*par_alloc_object) (int size, gboolean has_references);
void (*free_pinned_object) (char *obj, size_t size);
void (*iterate_objects) (gboolean non_pinned, gboolean pinned, IterateObjectCallbackFunc callback, void *data);
void (*free_non_pinned_object) (char *obj, size_t size);
void (*find_pin_queue_start_ends) (SgenGrayQueue *queue);
void (*pin_objects) (SgenGrayQueue *queue);
+ void (*pin_major_object) (char *obj, SgenGrayQueue *queue);
void (*scan_card_table) (SgenGrayQueue *queue);
void (*iterate_live_block_ranges) (sgen_cardtable_block_callback callback);
void (*init_to_space) (void);
void* (*alloc_worker_data) (void);
void (*init_worker_thread) (void *data);
void (*reset_worker_data) (void *data);
+ gboolean (*is_valid_object) (char *object);
+ gboolean (*describe_pointer) (char *pointer);
};
-void mono_sgen_marksweep_init (SgenMajorCollector *collector) MONO_INTERNAL;
-void mono_sgen_marksweep_fixed_init (SgenMajorCollector *collector) MONO_INTERNAL;
-void mono_sgen_marksweep_par_init (SgenMajorCollector *collector) MONO_INTERNAL;
-void mono_sgen_marksweep_fixed_par_init (SgenMajorCollector *collector) MONO_INTERNAL;
-void mono_sgen_copying_init (SgenMajorCollector *collector) MONO_INTERNAL;
+extern SgenMajorCollector major_collector;
+
+void sgen_marksweep_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void sgen_marksweep_fixed_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void sgen_marksweep_par_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void sgen_marksweep_fixed_par_init (SgenMajorCollector *collector) MONO_INTERNAL;
+void sgen_copying_init (SgenMajorCollector *collector) MONO_INTERNAL;
+SgenMajorCollector* sgen_get_major_collector (void) MONO_INTERNAL;
+
+
+typedef struct {
+ void (*wbarrier_set_field) (MonoObject *obj, gpointer field_ptr, MonoObject* value);
+ void (*wbarrier_set_arrayref) (MonoArray *arr, gpointer slot_ptr, MonoObject* value);
+ void (*wbarrier_arrayref_copy) (gpointer dest_ptr, gpointer src_ptr, int count);
+ void (*wbarrier_value_copy) (gpointer dest, gpointer src, int count, MonoClass *klass);
+ void (*wbarrier_object_copy) (MonoObject* obj, MonoObject *src);
+ void (*wbarrier_generic_nostore) (gpointer ptr);
+ void (*record_pointer) (gpointer ptr);
+
+ void (*begin_scan_remsets) (void *start_nursery, void *end_nursery, SgenGrayQueue *queue); /* OPTIONAL */
+ void (*finish_scan_remsets) (void *start_nursery, void *end_nursery, SgenGrayQueue *queue);
+
+ void (*register_thread) (SgenThreadInfo *p); /* OPTIONAL */
+ void (*cleanup_thread) (SgenThreadInfo *p); /* OPTIONAL */
+ void (*fill_thread_info_for_suspend) (SgenThreadInfo *info); /* OPTIONAL */
+ void (*prepare_for_minor_collection) (void); /* OPTIONAL */
+ void (*prepare_for_major_collection) (void);
+
+ void (*finish_minor_collection) (void); /* OPTIONAL */
+ gboolean (*find_address) (char *addr);
+} SgenRemeberedSet;
+
+SgenRemeberedSet *sgen_get_remset (void) MONO_INTERNAL;
static guint /*__attribute__((noinline)) not sure if this hint is a good idea*/
slow_object_get_size (MonoVTable *vtable, MonoObject* o)
* collector.
*/
static inline guint
-mono_sgen_par_object_get_size (MonoVTable *vtable, MonoObject* o)
+sgen_par_object_get_size (MonoVTable *vtable, MonoObject* o)
{
mword descr = (mword)vtable->gc_descr;
mword type = descr & 0x7;
}
static inline guint
-mono_sgen_safe_object_get_size (MonoObject *obj)
+sgen_safe_object_get_size (MonoObject *obj)
{
char *forwarded;
if ((forwarded = SGEN_OBJECT_IS_FORWARDED (obj)))
obj = (MonoObject*)forwarded;
- return mono_sgen_par_object_get_size ((MonoVTable*)SGEN_LOAD_VTABLE (obj), obj);
+ return sgen_par_object_get_size ((MonoVTable*)SGEN_LOAD_VTABLE (obj), obj);
}
-const char* mono_sgen_safe_name (void* obj) MONO_INTERNAL;
+const char* sgen_safe_name (void* obj) MONO_INTERNAL;
-gboolean mono_sgen_object_is_live (void *obj) MONO_INTERNAL;
+gboolean sgen_object_is_live (void *obj) MONO_INTERNAL;
-gboolean mono_sgen_need_bridge_processing (void) MONO_INTERNAL;
-void mono_sgen_bridge_processing_register_objects (int num_objs, MonoObject **objs) MONO_INTERNAL;
-void mono_sgen_bridge_processing_stw_step (void) MONO_INTERNAL;
-void mono_sgen_bridge_processing_finish (void) MONO_INTERNAL;
-void mono_sgen_register_test_bridge_callbacks (const char *bridge_class_name) MONO_INTERNAL;
-gboolean mono_sgen_is_bridge_object (MonoObject *obj) MONO_INTERNAL;
-void mono_sgen_mark_bridge_object (MonoObject *obj) MONO_INTERNAL;
+gboolean sgen_need_bridge_processing (void) MONO_INTERNAL;
+void sgen_bridge_reset_data (void) MONO_INTERNAL;
+void sgen_bridge_processing_stw_step (void) MONO_INTERNAL;
+void sgen_bridge_processing_finish (void) MONO_INTERNAL;
+void sgen_register_test_bridge_callbacks (const char *bridge_class_name) MONO_INTERNAL;
+gboolean sgen_is_bridge_object (MonoObject *obj) MONO_INTERNAL;
+gboolean sgen_is_bridge_class (MonoClass *class) MONO_INTERNAL;
+void sgen_mark_bridge_object (MonoObject *obj) MONO_INTERNAL;
+void sgen_bridge_register_finalized_object (MonoObject *object) MONO_INTERNAL;
-void mono_sgen_scan_togglerefs (CopyOrMarkObjectFunc copy_func, char *start, char *end, SgenGrayQueue *queue) MONO_INTERNAL;
-void mono_sgen_process_togglerefs (void) MONO_INTERNAL;
+void sgen_scan_togglerefs (CopyOrMarkObjectFunc copy_func, char *start, char *end, SgenGrayQueue *queue) MONO_INTERNAL;
+void sgen_process_togglerefs (void) MONO_INTERNAL;
-gboolean mono_sgen_gc_is_object_ready_for_finalization (void *object) MONO_INTERNAL;
-void mono_sgen_gc_lock (void) MONO_INTERNAL;
-void mono_sgen_gc_unlock (void) MONO_INTERNAL;
+gboolean sgen_gc_is_object_ready_for_finalization (void *object) MONO_INTERNAL;
+void sgen_gc_lock (void) MONO_INTERNAL;
+void sgen_gc_unlock (void) MONO_INTERNAL;
enum {
SPACE_MAJOR,
SPACE_LOS
};
-gboolean mono_sgen_try_alloc_space (mword size, int space) MONO_INTERNAL;
-void mono_sgen_release_space (mword size, int space) MONO_INTERNAL;
-void mono_sgen_pin_object (void *object, SgenGrayQueue *queue) MONO_INTERNAL;
+void sgen_pin_object (void *object, SgenGrayQueue *queue) MONO_INTERNAL;
+void sgen_parallel_pin_or_update (void **ptr, void *obj, MonoVTable *vt, SgenGrayQueue *queue) MONO_INTERNAL;
void sgen_collect_major_no_lock (const char *reason) MONO_INTERNAL;
-gboolean mono_sgen_need_major_collection (mword space_needed) MONO_INTERNAL;
-void mono_sgen_set_pinned_from_failed_allocation (mword objsize) MONO_INTERNAL;
+void sgen_collect_nursery_no_lock (size_t requested_size) MONO_INTERNAL;
+void sgen_minor_collect_or_expand_inner (size_t size) MONO_INTERNAL;
+gboolean sgen_need_major_collection (mword space_needed) MONO_INTERNAL;
+void sgen_set_pinned_from_failed_allocation (mword objsize) MONO_INTERNAL;
/* LOS */
extern LOSObject *los_object_list;
extern mword los_memory_usage;
-void mono_sgen_los_free_object (LOSObject *obj) MONO_INTERNAL;
-void* mono_sgen_los_alloc_large_inner (MonoVTable *vtable, size_t size) MONO_INTERNAL;
-void mono_sgen_los_sweep (void) MONO_INTERNAL;
-gboolean mono_sgen_ptr_is_in_los (char *ptr, char **start) MONO_INTERNAL;
-void mono_sgen_los_iterate_objects (IterateObjectCallbackFunc cb, void *user_data) MONO_INTERNAL;
-void mono_sgen_los_iterate_live_block_ranges (sgen_cardtable_block_callback callback) MONO_INTERNAL;
-void mono_sgen_los_scan_card_table (SgenGrayQueue *queue) MONO_INTERNAL;
+void sgen_los_free_object (LOSObject *obj) MONO_INTERNAL;
+void* sgen_los_alloc_large_inner (MonoVTable *vtable, size_t size) MONO_INTERNAL;
+void sgen_los_sweep (void) MONO_INTERNAL;
+gboolean sgen_ptr_is_in_los (char *ptr, char **start) MONO_INTERNAL;
+void sgen_los_iterate_objects (IterateObjectCallbackFunc cb, void *user_data) MONO_INTERNAL;
+void sgen_los_iterate_live_block_ranges (sgen_cardtable_block_callback callback) MONO_INTERNAL;
+void sgen_los_scan_card_table (SgenGrayQueue *queue) MONO_INTERNAL;
void sgen_major_collector_scan_card_table (SgenGrayQueue *queue) MONO_INTERNAL;
-FILE *mono_sgen_get_logfile (void) MONO_INTERNAL;
+FILE *sgen_get_logfile (void) MONO_INTERNAL;
+gboolean sgen_los_is_valid_object (char *object) MONO_INTERNAL;
+gboolean mono_sgen_los_describe_pointer (char *ptr) MONO_INTERNAL;
/* nursery allocator */
-void mono_sgen_clear_nursery_fragments (void) MONO_INTERNAL;
-void mono_sgen_nursery_allocator_prepare_for_pinning (void) MONO_INTERNAL;
-void mono_sgen_clear_current_nursery_fragment (void) MONO_INTERNAL;
-void mono_sgen_nursery_allocator_set_nursery_bounds (char *nursery_start, char *nursery_end) MONO_INTERNAL;
-mword mono_sgen_build_nursery_fragments (GCMemSection *nursery_section, void **start, int num_entries) MONO_INTERNAL;
-void mono_sgen_init_nursery_allocator (void) MONO_INTERNAL;
-void mono_sgen_nursery_allocator_init_heavy_stats (void) MONO_INTERNAL;
-char* mono_sgen_nursery_alloc_get_upper_alloc_bound (void) MONO_INTERNAL;
-void* mono_sgen_nursery_alloc (size_t size) MONO_INTERNAL;
-void* mono_sgen_nursery_alloc_range (size_t size, size_t min_size, int *out_alloc_size) MONO_INTERNAL;
-MonoVTable* mono_sgen_get_array_fill_vtable (void) MONO_INTERNAL;
-gboolean mono_sgen_can_alloc_size (size_t size) MONO_INTERNAL;
-void mono_sgen_nursery_retire_region (void *address, ptrdiff_t size) MONO_INTERNAL;
+void sgen_clear_nursery_fragments (void) MONO_INTERNAL;
+void sgen_nursery_allocator_prepare_for_pinning (void) MONO_INTERNAL;
+void sgen_nursery_allocator_set_nursery_bounds (char *nursery_start, char *nursery_end) MONO_INTERNAL;
+mword sgen_build_nursery_fragments (GCMemSection *nursery_section, void **start, int num_entries) MONO_INTERNAL;
+void sgen_init_nursery_allocator (void) MONO_INTERNAL;
+void sgen_nursery_allocator_init_heavy_stats (void) MONO_INTERNAL;
+void sgen_alloc_init_heavy_stats (void) MONO_INTERNAL;
+char* sgen_nursery_alloc_get_upper_alloc_bound (void) MONO_INTERNAL;
+void* sgen_nursery_alloc (size_t size) MONO_INTERNAL;
+void* sgen_nursery_alloc_range (size_t size, size_t min_size, size_t *out_alloc_size) MONO_INTERNAL;
+MonoVTable* sgen_get_array_fill_vtable (void) MONO_INTERNAL;
+gboolean sgen_can_alloc_size (size_t size) MONO_INTERNAL;
+void sgen_nursery_retire_region (void *address, ptrdiff_t size) MONO_INTERNAL;
+
+void sgen_nursery_alloc_prepare_for_minor (void) MONO_INTERNAL;
+void sgen_nursery_alloc_prepare_for_major (const char *reason) MONO_INTERNAL;
+
+char* sgen_alloc_for_promotion (char *obj, size_t objsize, gboolean has_references) MONO_INTERNAL;
+char* sgen_par_alloc_for_promotion (char *obj, size_t objsize, gboolean has_references) MONO_INTERNAL;
/* hash tables */
#define SGEN_HASH_TABLE_INIT(table_type,entry_type,data_size,hash_func,equal_func) { (table_type), (entry_type), (data_size), (hash_func), (equal_func), NULL, 0, 0 }
#define SGEN_HASH_TABLE_ENTRY_SIZE(data_size) ((data_size) + sizeof (SgenHashTableEntry*) + sizeof (gpointer))
-gpointer mono_sgen_hash_table_lookup (SgenHashTable *table, gpointer key) MONO_INTERNAL;
-gboolean mono_sgen_hash_table_replace (SgenHashTable *table, gpointer key, gpointer data) MONO_INTERNAL;
-gboolean mono_sgen_hash_table_set_value (SgenHashTable *table, gpointer key, gpointer data) MONO_INTERNAL;
-gboolean mono_sgen_hash_table_set_key (SgenHashTable *hash_table, gpointer old_key, gpointer new_key) MONO_INTERNAL;
-gboolean mono_sgen_hash_table_remove (SgenHashTable *table, gpointer key, gpointer data_return) MONO_INTERNAL;
+gpointer sgen_hash_table_lookup (SgenHashTable *table, gpointer key) MONO_INTERNAL;
+gboolean sgen_hash_table_replace (SgenHashTable *table, gpointer key, gpointer new_value, gpointer old_value) MONO_INTERNAL;
+gboolean sgen_hash_table_set_value (SgenHashTable *table, gpointer key, gpointer new_value, gpointer old_value) MONO_INTERNAL;
+gboolean sgen_hash_table_set_key (SgenHashTable *hash_table, gpointer old_key, gpointer new_key) MONO_INTERNAL;
+gboolean sgen_hash_table_remove (SgenHashTable *table, gpointer key, gpointer data_return) MONO_INTERNAL;
-void mono_sgen_hash_table_clean (SgenHashTable *table) MONO_INTERNAL;
+void sgen_hash_table_clean (SgenHashTable *table) MONO_INTERNAL;
-#define mono_sgen_hash_table_num_entries(h) ((h)->num_entries)
+#define sgen_hash_table_num_entries(h) ((h)->num_entries)
#define SGEN_HASH_TABLE_FOREACH(h,k,v) do { \
SgenHashTable *__hash_table = (h); \
__next = __iter; \
--__hash_table->num_entries; \
if ((free)) \
- mono_sgen_free_internal (__entry, __hash_table->entry_mem_type); \
+ sgen_free_internal (__entry, __hash_table->entry_mem_type); \
} while (0)
#define SGEN_HASH_TABLE_FOREACH_SET_KEY(k) ((__entry)->key = (k))
} \
} while (0)
+/* TLS Data */
+
+extern MonoNativeTlsKey thread_info_key;
+
+#ifdef HAVE_KW_THREAD
+extern __thread SgenThreadInfo *thread_info;
+extern __thread gpointer *store_remset_buffer;
+extern __thread long store_remset_buffer_index;
+extern __thread char *stack_end;
+extern __thread long *store_remset_buffer_index_addr;
+#endif
+
+#ifdef HAVE_KW_THREAD
+#define TLAB_ACCESS_INIT
+#define REMEMBERED_SET remembered_set
+#define STORE_REMSET_BUFFER store_remset_buffer
+#define STORE_REMSET_BUFFER_INDEX store_remset_buffer_index
+#define IN_CRITICAL_REGION thread_info->in_critical_region
+#else
+#define TLAB_ACCESS_INIT SgenThreadInfo *__thread_info__ = mono_native_tls_get_value (thread_info_key)
+#define REMEMBERED_SET (__thread_info__->remset)
+#define STORE_REMSET_BUFFER (__thread_info__->store_remset_buffer)
+#define STORE_REMSET_BUFFER_INDEX (__thread_info__->store_remset_buffer_index)
+#define IN_CRITICAL_REGION (__thread_info__->in_critical_region)
+#endif
+
+#ifndef DISABLE_CRITICAL_REGION
+
+#ifdef HAVE_KW_THREAD
+#define IN_CRITICAL_REGION thread_info->in_critical_region
+#else
+#define IN_CRITICAL_REGION (__thread_info__->in_critical_region)
+#endif
+
+/* Enter must be visible before anything is done in the critical region. */
+#define ENTER_CRITICAL_REGION do { mono_atomic_store_acquire (&IN_CRITICAL_REGION, 1); } while (0)
+
+/* Exit must make sure all critical regions stores are visible before it signal the end of the region.
+ * We don't need to emit a full barrier since we
+ */
+#define EXIT_CRITICAL_REGION do { mono_atomic_store_release (&IN_CRITICAL_REGION, 0); } while (0)
+
+#endif
+
+#ifdef HAVE_KW_THREAD
+#define EMIT_TLS_ACCESS(mb,dummy,offset) do { \
+ mono_mb_emit_byte ((mb), MONO_CUSTOM_PREFIX); \
+ mono_mb_emit_byte ((mb), CEE_MONO_TLS); \
+ mono_mb_emit_i4 ((mb), (offset)); \
+ } while (0)
+#else
+
+/*
+ * CEE_MONO_TLS requires the tls offset, not the key, so the code below only works on darwin,
+ * where the two are the same.
+ */
+#if defined(__APPLE__) || defined (HOST_WIN32)
+#define EMIT_TLS_ACCESS(mb,member,dummy) do { \
+ mono_mb_emit_byte ((mb), MONO_CUSTOM_PREFIX); \
+ mono_mb_emit_byte ((mb), CEE_MONO_TLS); \
+ mono_mb_emit_i4 ((mb), thread_info_key); \
+ mono_mb_emit_icon ((mb), G_STRUCT_OFFSET (SgenThreadInfo, member)); \
+ mono_mb_emit_byte ((mb), CEE_ADD); \
+ mono_mb_emit_byte ((mb), CEE_LDIND_I); \
+ } while (0)
+#else
+#define EMIT_TLS_ACCESS(mb,member,dummy) do { g_error ("sgen is not supported when using --with-tls=pthread.\n"); } while (0)
+#endif
+
+#endif
+
+/* Other globals */
+
+extern GCMemSection *nursery_section;
+extern int stat_major_gcs;
+extern guint32 collect_before_allocs;
+extern guint32 verify_before_allocs;
+extern gboolean has_per_allocation_action;
+extern int degraded_mode;
+extern int default_nursery_size;
+extern guint32 tlab_size;
+extern NurseryClearPolicy nursery_clear_policy;
+
+extern LOCK_DECLARE (gc_mutex);
+
+extern int do_pin_stats;
+
+/* Nursery helpers. */
+
+static inline void
+sgen_set_nursery_scan_start (char *p)
+{
+ int idx = (p - (char*)nursery_section->data) / SGEN_SCAN_START_SIZE;
+ char *old = nursery_section->scan_starts [idx];
+ if (!old || old > p)
+ nursery_section->scan_starts [idx] = p;
+}
+
+
+/* Object Allocation */
+
+typedef enum {
+ ATYPE_NORMAL,
+ ATYPE_VECTOR,
+ ATYPE_SMALL,
+ ATYPE_NUM
+} SgenAllocatorType;
+
+void sgen_init_tlab_info (SgenThreadInfo* info);
+void sgen_clear_tlabs (void);
+gboolean sgen_is_managed_allocator (MonoMethod *method);
+
+/* Debug support */
+
+void sgen_check_consistency (void);
+void sgen_check_major_refs (void);
+void sgen_check_whole_heap (void);
+void sgen_check_whole_heap_stw (void) MONO_INTERNAL;
+
+/* Write barrier support */
+
+/*
+ * This causes the compile to extend the liveness of 'v' till the call to dummy_use
+ */
+static inline void
+sgen_dummy_use (gpointer v) {
+#if defined(__GNUC__)
+ __asm__ volatile ("" : "=r"(v) : "r"(v));
+#elif defined(_MSC_VER)
+ __asm {
+ mov eax, v;
+ and eax, eax;
+ };
+#else
+#error "Implement sgen_dummy_use for your compiler"
+#endif
+}
+
#endif /* HAVE_SGEN_GC */
#endif /* __MONO_SGENGC_H__ */
projects / mono.git / blobdiff