X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmetadata%2Fsgen-gc.h;h=550f03fcd3a4c5766895dfbf920bb6518c5d2338;hb=28d30f12aeba96f2c7c8218ca4552a3352017993;hp=902169b2464f78139885b03d1896c990ddf5b567;hpb=34012f47bbed6f91b307feec67303a733a90f88b;p=mono.git diff --git a/mono/metadata/sgen-gc.h b/mono/metadata/sgen-gc.h index 902169b2464..550f03fcd3a 100644 --- a/mono/metadata/sgen-gc.h +++ b/mono/metadata/sgen-gc.h @@ -46,6 +46,7 @@ typedef struct _SgenThreadInfo SgenThreadInfo; #include #include #include +#include #if defined(__MACH__) #include @@ -61,7 +62,7 @@ typedef enum { 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 () @@ -77,6 +78,30 @@ struct _RememberedSet { 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; @@ -88,8 +113,10 @@ struct _SgenThreadInfo { #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; @@ -181,6 +208,7 @@ typedef struct _SgenPinnedChunk SgenPinnedChunk; #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; \ @@ -188,6 +216,13 @@ typedef struct _SgenPinnedChunk SgenPinnedChunk; __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 */ @@ -212,7 +247,7 @@ extern FILE* gc_debug_file; 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 @@ -225,6 +260,51 @@ extern unsigned int mono_sgen_global_stop_count; #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 */ @@ -267,43 +347,13 @@ typedef struct { */ #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)); \ @@ -312,41 +362,45 @@ typedef void (*ScanVTypeFunc) (char*, mword desc, SgenGrayQueue*); 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, @@ -389,53 +443,173 @@ enum { 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; @@ -456,20 +630,17 @@ struct _SgenMajorCollector { 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); @@ -493,13 +664,43 @@ struct _SgenMajorCollector { 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) @@ -533,7 +734,7 @@ 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; @@ -560,47 +761,50 @@ mono_sgen_par_object_get_size (MonoVTable *vtable, MonoObject* o) } 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 */ @@ -618,31 +822,39 @@ struct _LOSObject { 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 */ @@ -667,15 +879,15 @@ typedef struct { #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); \ @@ -695,7 +907,7 @@ void mono_sgen_hash_table_clean (SgenHashTable *table) MONO_INTERNAL; __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)) @@ -705,6 +917,144 @@ void mono_sgen_hash_table_clean (SgenHashTable *table) MONO_INTERNAL; } \ } 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__ */