mono/metadata/sgen-client-mono.h

   1 /**
   2  * \file
   3  * Mono's client definitions for SGen.
   4  *
   5  * Copyright (C) 2014 Xamarin Inc
   6  *
   7  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
   8  */
   9
  10 #ifdef SGEN_DEFINE_OBJECT_VTABLE
  11
  12 #include "sgen/sgen-archdep.h"
  13 #include "utils/mono-threads.h"
  14 #include "utils/mono-mmap.h"
  15 #include "metadata/object-internals.h"
  16
  17 typedef MonoObject GCObject;
  18 typedef MonoVTable* GCVTable;
  19
  20 static inline GCVTable
  21 SGEN_LOAD_VTABLE_UNCHECKED (GCObject *obj)
  22 {
  23         return obj->vtable;
  24 }
  25
  26 static inline SgenDescriptor
  27 sgen_vtable_get_descriptor (GCVTable vtable)
  28 {
  29         return (SgenDescriptor)vtable->gc_descr;
  30 }
  31
  32 typedef struct _SgenClientThreadInfo SgenClientThreadInfo;
  33 struct _SgenClientThreadInfo {
  34         MonoThreadInfo info;
  35
  36         /*
  37          * `skip` is set to TRUE when STW fails to suspend a thread, most probably because
  38          * the underlying thread is dead.
  39         */
  40         gboolean skip, suspend_done;
  41         volatile int in_critical_region;
  42
  43         /*
  44         This is set the argument of mono_gc_set_skip_thread.
  45
  46         A thread that knowingly holds no managed state can call this
  47         function around blocking loops to reduce the GC burden by not
  48         been scanned.
  49         */
  50         gboolean gc_disabled;
  51
  52 #ifdef SGEN_POSIX_STW
  53         /* This is -1 until the first suspend. */
  54         int signal;
  55         /* FIXME: kill this, we only use signals on systems that have rt-posix, which doesn't have issues with duplicates. */
  56         unsigned int stop_count; /* to catch duplicate signals. */
  57 #endif
  58
  59         gpointer runtime_data;
  60
  61         void *stack_end;
  62         void *stack_start;
  63         void *stack_start_limit;
  64
  65         MonoContext ctx;                /* ditto */
  66 };
  67
  68 #else
  69
  70 #include "metadata/profiler-private.h"
  71 #include "utils/dtrace.h"
  72 #include "utils/mono-counters.h"
  73 #include "utils/mono-logger-internals.h"
  74 #include "utils/mono-time.h"
  75 #include "utils/mono-os-semaphore.h"
  76 #include "metadata/sgen-bridge-internals.h"
  77
  78 extern void mono_sgen_register_moved_object (void *obj, void *destination);
  79 extern void mono_sgen_gc_event_moves (void);
  80
  81 extern void mono_sgen_init_stw (void);
  82
  83 enum {
  84         INTERNAL_MEM_EPHEMERON_LINK = INTERNAL_MEM_FIRST_CLIENT,
  85         INTERNAL_MEM_MOVED_OBJECT,
  86         INTERNAL_MEM_MAX
  87 };
  88
  89 static inline mword
  90 sgen_mono_array_size (GCVTable vtable, MonoArray *array, mword *bounds_size, mword descr)
  91 {
  92         mword size, size_without_bounds;
  93         int element_size;
  94
  95         if ((descr & DESC_TYPE_MASK) == DESC_TYPE_VECTOR)
  96                 element_size = ((descr) >> VECTOR_ELSIZE_SHIFT) & MAX_ELEMENT_SIZE;
  97         else
  98                 element_size = vtable->klass->sizes.element_size;
  99
 100         size_without_bounds = size = MONO_SIZEOF_MONO_ARRAY + element_size * mono_array_length_fast (array);
 101
 102         if (G_UNLIKELY (array->bounds)) {
 103                 size += sizeof (mono_array_size_t) - 1;
 104                 size &= ~(sizeof (mono_array_size_t) - 1);
 105                 size += sizeof (MonoArrayBounds) * vtable->klass->rank;
 106         }
 107
 108         if (bounds_size)
 109                 *bounds_size = size - size_without_bounds;
 110         return size;
 111 }
 112
 113 #define SGEN_CLIENT_OBJECT_HEADER_SIZE          (sizeof (GCObject))
 114 #define SGEN_CLIENT_MINIMUM_OBJECT_SIZE         SGEN_CLIENT_OBJECT_HEADER_SIZE
 115
 116 static mword /*__attribute__ ((__noinline__)) not sure if this hint is a good idea*/
 117 sgen_client_slow_object_get_size (GCVTable vtable, GCObject* o)
 118 {
 119         MonoClass *klass = ((MonoVTable*)vtable)->klass;
 120
 121         /*
 122          * We depend on mono_string_length_fast and
 123          * mono_array_length_fast not using the object's vtable.
 124          */
 125         if (klass == mono_defaults.string_class) {
 126                 return G_STRUCT_OFFSET (MonoString, chars) + 2 * mono_string_length_fast ((MonoString*) o) + 2;
 127         } else if (klass->rank) {
 128                 return sgen_mono_array_size (vtable, (MonoArray*)o, NULL, 0);
 129         } else {
 130                 /* from a created object: the class must be inited already */
 131                 return klass->instance_size;
 132         }
 133 }
 134
 135 /*
 136  * This function can be called on an object whose first word, the
 137  * vtable field, is not intact.  This is necessary for the parallel
 138  * collector.
 139  */
 140 static MONO_NEVER_INLINE mword
 141 sgen_client_par_object_get_size (GCVTable vtable, GCObject* o)
 142 {
 143         SgenDescriptor descr = sgen_vtable_get_descriptor (vtable);
 144         mword type = descr & DESC_TYPE_MASK;
 145
 146         if (type == DESC_TYPE_RUN_LENGTH || type == DESC_TYPE_SMALL_PTRFREE) {
 147                 mword size = descr & 0xfff8;
 148                 SGEN_ASSERT (9, size >= sizeof (MonoObject), "Run length object size to small");
 149                 return size;
 150         } else if (descr == SGEN_DESC_STRING) {
 151                 return G_STRUCT_OFFSET (MonoString, chars) + 2 * mono_string_length_fast ((MonoString*) o) + 2;
 152         } else if (type == DESC_TYPE_VECTOR) {
 153                 return sgen_mono_array_size (vtable, (MonoArray*)o, NULL, descr);
 154         }
 155
 156         return sgen_client_slow_object_get_size (vtable, o);
 157 }
 158
 159 static MONO_ALWAYS_INLINE size_t G_GNUC_UNUSED
 160 sgen_client_array_element_size (GCVTable gc_vtable)
 161 {
 162         MonoVTable *vt = (MonoVTable*)gc_vtable;
 163         return mono_array_element_size (vt->klass);
 164 }
 165
 166 static MONO_ALWAYS_INLINE G_GNUC_UNUSED char*
 167 sgen_client_array_data_start (GCObject *obj)
 168 {
 169         return (char*)(obj) +  G_STRUCT_OFFSET (MonoArray, vector);
 170 }
 171
 172 static MONO_ALWAYS_INLINE size_t G_GNUC_UNUSED
 173 sgen_client_array_length (GCObject *obj)
 174 {
 175         return mono_array_length_fast ((MonoArray*)obj);
 176 }
 177
 178 static MONO_ALWAYS_INLINE gboolean G_GNUC_UNUSED
 179 sgen_client_object_is_array_fill (GCObject *o)
 180 {
 181         return ((MonoObject*)o)->synchronisation == GINT_TO_POINTER (-1);
 182 }
 183
 184 static MONO_ALWAYS_INLINE void G_GNUC_UNUSED
 185 sgen_client_pre_copy_checks (char *destination, GCVTable gc_vtable, void *obj, mword objsize)
 186 {
 187         MonoVTable *vt = (MonoVTable*)gc_vtable;
 188         SGEN_ASSERT (9, vt->klass->inited, "vtable %p for class %s:%s was not initialized", vt, vt->klass->name_space, vt->klass->name);
 189 }
 190
 191 static MONO_ALWAYS_INLINE void G_GNUC_UNUSED
 192 sgen_client_update_copied_object (char *destination, GCVTable gc_vtable, void *obj, mword objsize)
 193 {
 194         MonoVTable *vt = (MonoVTable*)gc_vtable;
 195         if (G_UNLIKELY (vt->rank && ((MonoArray*)obj)->bounds)) {
 196                 MonoArray *array = (MonoArray*)destination;
 197                 array->bounds = (MonoArrayBounds*)((char*)destination + ((char*)((MonoArray*)obj)->bounds - (char*)obj));
 198                 SGEN_LOG (9, "Array instance %p: size: %lu, rank: %d, length: %lu", array, (unsigned long)objsize, vt->rank, (unsigned long)mono_array_length (array));
 199         }
 200
 201         if (MONO_PROFILER_ENABLED (gc_moves))
 202                 mono_sgen_register_moved_object (obj, destination);
 203 }
 204
 205 #ifdef XDOMAIN_CHECKS_IN_WBARRIER
 206 extern gboolean sgen_mono_xdomain_checks;
 207
 208 #define sgen_client_wbarrier_generic_nostore_check(ptr) do {            \
 209                 /* FIXME: ptr_in_heap must be called with the GC lock held */ \
 210                 if (sgen_mono_xdomain_checks && *(MonoObject**)ptr && ptr_in_heap (ptr)) { \
 211                         char *start = find_object_for_ptr (ptr);        \
 212                         MonoObject *value = *(MonoObject**)ptr;         \
 213                         LOCK_GC;                                        \
 214                         SGEN_ASSERT (0, start, "Write barrier outside an object?"); \
 215                         if (start) {                                    \
 216                                 MonoObject *obj = (MonoObject*)start;   \
 217                                 if (obj->vtable->domain != value->vtable->domain) \
 218                                         SGEN_ASSERT (0, is_xdomain_ref_allowed (ptr, start, obj->vtable->domain), "Cross-domain ref not allowed"); \
 219                         }                                               \
 220                         UNLOCK_GC;                                      \
 221                 }                                                       \
 222         } while (0)
 223 #else
 224 #define sgen_client_wbarrier_generic_nostore_check(ptr)
 225 #endif
 226
 227 static gboolean G_GNUC_UNUSED
 228 sgen_client_object_has_critical_finalizer (GCObject *obj)
 229 {
 230         MonoClass *klass;
 231
 232         if (!mono_defaults.critical_finalizer_object)
 233                 return FALSE;
 234
 235         klass = SGEN_LOAD_VTABLE (obj)->klass;
 236
 237         return mono_class_has_parent_fast (klass, mono_defaults.critical_finalizer_object);
 238 }
 239
 240 const char* sgen_client_vtable_get_namespace (GCVTable vtable);
 241 const char* sgen_client_vtable_get_name (GCVTable vtable);
 242
 243 static gboolean G_GNUC_UNUSED
 244 sgen_client_bridge_need_processing (void)
 245 {
 246         return sgen_need_bridge_processing ();
 247 }
 248
 249 static void G_GNUC_UNUSED
 250 sgen_client_bridge_reset_data (void)
 251 {
 252         sgen_bridge_reset_data ();
 253 }
 254
 255 static void G_GNUC_UNUSED
 256 sgen_client_bridge_processing_stw_step (void)
 257 {
 258         sgen_bridge_processing_stw_step ();
 259 }
 260
 261 static void G_GNUC_UNUSED
 262 sgen_client_bridge_wait_for_processing (void)
 263 {
 264         mono_gc_wait_for_bridge_processing ();
 265 }
 266
 267 static void G_GNUC_UNUSED
 268 sgen_client_bridge_processing_finish (int generation)
 269 {
 270         sgen_bridge_processing_finish (generation);
 271 }
 272
 273 static gboolean G_GNUC_UNUSED
 274 sgen_client_bridge_is_bridge_object (GCObject *obj)
 275 {
 276         return sgen_is_bridge_object (obj);
 277 }
 278
 279 static void G_GNUC_UNUSED
 280 sgen_client_bridge_register_finalized_object (GCObject *object)
 281 {
 282         sgen_bridge_register_finalized_object (object);
 283 }
 284
 285 static void G_GNUC_UNUSED
 286 sgen_client_binary_protocol_collection_requested (int generation, size_t requested_size, gboolean force)
 287 {
 288         MONO_GC_REQUESTED (generation, requested_size, force);
 289 }
 290
 291 static void G_GNUC_UNUSED
 292 sgen_client_binary_protocol_collection_begin (int minor_gc_count, int generation)
 293 {
 294         MONO_GC_BEGIN (generation);
 295
 296         MONO_PROFILER_RAISE (gc_event, (MONO_GC_EVENT_START, generation));
 297
 298 #ifndef DISABLE_PERFCOUNTERS
 299         if (generation == GENERATION_NURSERY)
 300                 mono_perfcounters->gc_collections0++;
 301         else
 302                 mono_perfcounters->gc_collections1++;
 303 #endif
 304 }
 305
 306 static void G_GNUC_UNUSED
 307 sgen_client_binary_protocol_collection_end (int minor_gc_count, int generation, long long num_objects_scanned, long long num_unique_objects_scanned)
 308 {
 309         MONO_GC_END (generation);
 310
 311         MONO_PROFILER_RAISE (gc_event, (MONO_GC_EVENT_END, generation));
 312 }
 313
 314 static void G_GNUC_UNUSED
 315 sgen_client_binary_protocol_concurrent_start (void)
 316 {
 317         MONO_GC_CONCURRENT_START_BEGIN (GENERATION_OLD);
 318 }
 319
 320 static void G_GNUC_UNUSED
 321 sgen_client_binary_protocol_concurrent_update (void)
 322 {
 323         MONO_GC_CONCURRENT_UPDATE_FINISH_BEGIN (GENERATION_OLD, sgen_get_major_collector ()->get_and_reset_num_major_objects_marked ());
 324 }
 325
 326 static void G_GNUC_UNUSED
 327 sgen_client_binary_protocol_concurrent_finish (void)
 328 {
 329         MONO_GC_CONCURRENT_UPDATE_FINISH_BEGIN (GENERATION_OLD, sgen_get_major_collector ()->get_and_reset_num_major_objects_marked ());
 330 }
 331
 332 static void G_GNUC_UNUSED
 333 sgen_client_binary_protocol_sweep_begin (int generation, int full_sweep)
 334 {
 335         MONO_GC_SWEEP_BEGIN (generation, full_sweep);
 336 }
 337
 338 static void G_GNUC_UNUSED
 339 sgen_client_binary_protocol_sweep_end (int generation, int full_sweep)
 340 {
 341         MONO_GC_SWEEP_END (generation, full_sweep);
 342 }
 343
 344 static void G_GNUC_UNUSED
 345 sgen_client_binary_protocol_world_stopping (int generation, long long timestamp, gpointer thread)
 346 {
 347         MONO_GC_WORLD_STOP_BEGIN ();
 348 }
 349
 350 static void G_GNUC_UNUSED
 351 sgen_client_binary_protocol_world_stopped (int generation, long long timestamp, long long total_major_cards, long long marked_major_cards, long long total_los_cards, long long marked_los_cards)
 352 {
 353         MONO_GC_WORLD_STOP_END ();
 354 }
 355
 356 static void G_GNUC_UNUSED
 357 sgen_client_binary_protocol_world_restarting (int generation, long long timestamp, long long total_major_cards, long long marked_major_cards, long long total_los_cards, long long marked_los_cards)
 358 {
 359         MONO_GC_WORLD_RESTART_BEGIN (generation);
 360 }
 361
 362 static void G_GNUC_UNUSED
 363 sgen_client_binary_protocol_world_restarted (int generation, long long timestamp)
 364 {
 365         MONO_GC_WORLD_RESTART_END (generation);
 366 }
 367
 368 static void G_GNUC_UNUSED
 369 sgen_client_binary_protocol_block_alloc (gpointer addr, size_t size)
 370 {
 371 }
 372
 373 static void G_GNUC_UNUSED
 374 sgen_client_binary_protocol_block_free (gpointer addr, size_t size)
 375 {
 376 }
 377
 378 static void G_GNUC_UNUSED
 379 sgen_client_binary_protocol_block_set_state (gpointer addr, size_t size, int old, int new_)
 380 {
 381 }
 382
 383 static void G_GNUC_UNUSED
 384 sgen_client_binary_protocol_mark_start (int generation)
 385 {
 386 }
 387
 388 static void G_GNUC_UNUSED
 389 sgen_client_binary_protocol_mark_end (int generation)
 390 {
 391 }
 392
 393 static void G_GNUC_UNUSED
 394 sgen_client_binary_protocol_reclaim_start (int generation)
 395 {
 396 }
 397
 398 static void G_GNUC_UNUSED
 399 sgen_client_binary_protocol_reclaim_end (int generation)
 400 {
 401 }
 402
 403 static void
 404 mono_binary_protocol_alloc_generic (gpointer obj, gpointer vtable, size_t size, gboolean pinned)
 405 {
 406 #ifdef ENABLE_DTRACE
 407         const char *namespace = sgen_client_vtable_get_namespace (vtable);
 408         const char *name = sgen_client_vtable_get_name (vtable);
 409
 410         if (sgen_ptr_in_nursery (obj)) {
 411                 if (G_UNLIKELY (MONO_GC_NURSERY_OBJ_ALLOC_ENABLED ()))
 412                         MONO_GC_NURSERY_OBJ_ALLOC ((mword)obj, size, namespace, name);
 413         } else {
 414                 if (size > SGEN_MAX_SMALL_OBJ_SIZE) {
 415                         if (G_UNLIKELY (MONO_GC_MAJOR_OBJ_ALLOC_LARGE_ENABLED ()))
 416                                 MONO_GC_MAJOR_OBJ_ALLOC_LARGE ((mword)obj, size, namespace, name);
 417                 } else if (pinned) {
 418                         MONO_GC_MAJOR_OBJ_ALLOC_PINNED ((mword)obj, size, namespace, name);
 419                 }
 420         }
 421 #endif
 422 }
 423
 424 static void G_GNUC_UNUSED
 425 sgen_client_binary_protocol_alloc (gpointer obj, gpointer vtable, size_t size, gpointer provenance)
 426 {
 427         mono_binary_protocol_alloc_generic (obj, vtable, size, FALSE);
 428 }
 429
 430 static void G_GNUC_UNUSED
 431 sgen_client_binary_protocol_alloc_pinned (gpointer obj, gpointer vtable, size_t size, gpointer provenance)
 432 {
 433         mono_binary_protocol_alloc_generic (obj, vtable, size, TRUE);
 434 }
 435
 436 static void G_GNUC_UNUSED
 437 sgen_client_binary_protocol_alloc_degraded (gpointer obj, gpointer vtable, size_t size, gpointer provenance)
 438 {
 439         MONO_GC_MAJOR_OBJ_ALLOC_DEGRADED ((mword)obj, size, sgen_client_vtable_get_namespace (vtable), sgen_client_vtable_get_name (vtable));
 440 }
 441
 442 static void G_GNUC_UNUSED
 443 sgen_client_binary_protocol_card_scan (gpointer start, size_t size)
 444 {
 445 }
 446
 447 static void G_GNUC_UNUSED
 448 sgen_client_binary_protocol_pin_stage (gpointer addr_ptr, gpointer addr)
 449 {
 450 }
 451
 452 static void G_GNUC_UNUSED
 453 sgen_client_binary_protocol_cement_stage (gpointer addr)
 454 {
 455 }
 456
 457 static void G_GNUC_UNUSED
 458 sgen_client_binary_protocol_pin (gpointer obj, gpointer vtable, size_t size)
 459 {
 460 #ifdef ENABLE_DTRACE
 461         if (G_UNLIKELY (MONO_GC_OBJ_PINNED_ENABLED ())) {
 462                 int gen = sgen_ptr_in_nursery (obj) ? GENERATION_NURSERY : GENERATION_OLD;
 463                 MONO_GC_OBJ_PINNED ((mword)obj,
 464                                 sgen_safe_object_get_size (obj),
 465                                 sgen_client_vtable_get_namespace (vtable), sgen_client_vtable_get_name (vtable), gen);
 466         }
 467 #endif
 468 }
 469
 470 static void G_GNUC_UNUSED
 471 sgen_client_binary_protocol_mark (gpointer obj, gpointer vtable, size_t size)
 472 {
 473 }
 474
 475 static void G_GNUC_UNUSED
 476 sgen_client_binary_protocol_scan_begin (gpointer obj, gpointer vtable, size_t size)
 477 {
 478 }
 479
 480 static void G_GNUC_UNUSED
 481 sgen_client_binary_protocol_scan_vtype_begin (gpointer obj, size_t size)
 482 {
 483 }
 484
 485 static void G_GNUC_UNUSED
 486 sgen_client_binary_protocol_scan_process_reference (gpointer obj, gpointer ptr, gpointer value)
 487 {
 488 }
 489
 490 static void G_GNUC_UNUSED
 491 sgen_client_binary_protocol_scan_stack (gpointer thread, gpointer stack_start, gpointer stack_end, int skip_reason)
 492 {
 493 }
 494
 495 static void G_GNUC_UNUSED
 496 sgen_client_binary_protocol_wbarrier (gpointer ptr, gpointer value, gpointer value_vtable)
 497 {
 498 }
 499
 500 static void G_GNUC_UNUSED
 501 sgen_client_binary_protocol_cement (gpointer ptr, gpointer vtable, size_t size)
 502 {
 503 #ifdef ENABLE_DTRACE
 504         if (G_UNLIKELY (MONO_GC_OBJ_CEMENTED_ENABLED())) {
 505                 MONO_GC_OBJ_CEMENTED ((mword)ptr, sgen_safe_object_get_size ((GCObject*)ptr),
 506                                 sgen_client_vtable_get_namespace (vtable), sgen_client_vtable_get_name (vtable));
 507         }
 508 #endif
 509 }
 510
 511 static void G_GNUC_UNUSED
 512 sgen_client_binary_protocol_copy (gpointer from, gpointer to, gpointer vtable, size_t size)
 513 {
 514 #ifdef ENABLE_DTRACE
 515         if (G_UNLIKELY (MONO_GC_OBJ_MOVED_ENABLED ())) {
 516                 int dest_gen = sgen_ptr_in_nursery (to) ? GENERATION_NURSERY : GENERATION_OLD;
 517                 int src_gen = sgen_ptr_in_nursery (from) ? GENERATION_NURSERY : GENERATION_OLD;
 518                 MONO_GC_OBJ_MOVED ((mword)to, (mword)from, dest_gen, src_gen, size, sgen_client_vtable_get_namespace (vtable), sgen_client_vtable_get_name (vtable));
 519         }
 520 #endif
 521 }
 522
 523 static void G_GNUC_UNUSED
 524 sgen_client_binary_protocol_global_remset (gpointer ptr, gpointer value, gpointer value_vtable)
 525 {
 526 #ifdef ENABLE_DTRACE
 527         if (G_UNLIKELY (MONO_GC_GLOBAL_REMSET_ADD_ENABLED ())) {
 528                 MONO_GC_GLOBAL_REMSET_ADD ((mword)ptr, (mword)value, sgen_safe_object_get_size (value),
 529                                 sgen_client_vtable_get_namespace (value_vtable), sgen_client_vtable_get_name (value_vtable));
 530         }
 531 #endif
 532 }
 533
 534 static void G_GNUC_UNUSED
 535 sgen_client_binary_protocol_mod_union_remset (gpointer obj, gpointer ptr, gpointer value, gpointer value_vtable)
 536 {
 537 }
 538
 539 static void G_GNUC_UNUSED
 540 sgen_client_binary_protocol_ptr_update (gpointer ptr, gpointer old_value, gpointer new_value, gpointer vtable, size_t size)
 541 {
 542 }
 543
 544 static void G_GNUC_UNUSED
 545 sgen_client_binary_protocol_cleanup (gpointer ptr, gpointer vtable, size_t size)
 546 {
 547 }
 548
 549 static void G_GNUC_UNUSED
 550 sgen_client_binary_protocol_dislink_add (gpointer link, gpointer obj, gboolean track)
 551 {
 552 }
 553
 554 static void G_GNUC_UNUSED
 555 sgen_client_binary_protocol_dislink_update (gpointer link, gpointer obj, gboolean track)
 556 {
 557 #ifdef ENABLE_DTRACE
 558         if (MONO_GC_WEAK_UPDATE_ENABLED ()) {
 559                 GCVTable vt = obj ? SGEN_LOAD_VTABLE (obj) : NULL;
 560                 MONO_GC_WEAK_UPDATE ((mword)link,
 561                                 (mword)obj,
 562                                 obj ? (mword)sgen_safe_object_get_size (obj) : (mword)0,
 563                                 obj ? sgen_client_vtable_get_namespace (vt) : NULL,
 564                                 obj ? sgen_client_vtable_get_name (vt) : NULL,
 565                                 track ? 1 : 0);
 566         }
 567 #endif
 568 }
 569
 570 static void G_GNUC_UNUSED
 571 sgen_client_binary_protocol_dislink_remove (gpointer link, gboolean track)
 572 {
 573 }
 574
 575 static void G_GNUC_UNUSED
 576 sgen_client_binary_protocol_empty (gpointer start, size_t size)
 577 {
 578         if (sgen_ptr_in_nursery (start))
 579                 MONO_GC_NURSERY_SWEPT ((mword)start, size);
 580         else
 581                 MONO_GC_MAJOR_SWEPT ((mword)start, size);
 582 }
 583
 584 static void G_GNUC_UNUSED
 585 sgen_client_binary_protocol_thread_suspend (gpointer thread, gpointer stopped_ip)
 586 {
 587 }
 588
 589 static void G_GNUC_UNUSED
 590 sgen_client_binary_protocol_thread_restart (gpointer thread)
 591 {
 592 }
 593
 594 static void G_GNUC_UNUSED
 595 sgen_client_binary_protocol_thread_register (gpointer thread)
 596 {
 597 }
 598
 599 static void G_GNUC_UNUSED
 600 sgen_client_binary_protocol_thread_unregister (gpointer thread)
 601 {
 602 }
 603
 604 static void G_GNUC_UNUSED
 605 sgen_client_binary_protocol_missing_remset (gpointer obj, gpointer obj_vtable, int offset, gpointer value, gpointer value_vtable, gboolean value_pinned)
 606 {
 607 }
 608
 609 static void G_GNUC_UNUSED
 610 sgen_client_binary_protocol_cement_reset (void)
 611 {
 612 }
 613
 614 static void G_GNUC_UNUSED
 615 sgen_client_binary_protocol_domain_unload_begin (gpointer domain)
 616 {
 617 }
 618
 619 static void G_GNUC_UNUSED
 620 sgen_client_binary_protocol_domain_unload_end (gpointer domain)
 621 {
 622 }
 623
 624 static void G_GNUC_UNUSED
 625 sgen_client_binary_protocol_gray_enqueue (gpointer queue, gpointer cursor, gpointer value)
 626 {
 627 }
 628
 629 static void G_GNUC_UNUSED
 630 sgen_client_binary_protocol_gray_dequeue (gpointer queue, gpointer cursor, gpointer value)
 631 {
 632 }
 633
 634 static void G_GNUC_UNUSED
 635 sgen_client_binary_protocol_major_card_table_scan_start (long long timestamp, gboolean mod_union)
 636 {
 637 }
 638
 639 static void G_GNUC_UNUSED
 640 sgen_client_binary_protocol_major_card_table_scan_end (long long timestamp, gboolean mod_union)
 641 {
 642 }
 643
 644 static void G_GNUC_UNUSED
 645 sgen_client_binary_protocol_los_card_table_scan_start (long long timestamp, gboolean mod_union)
 646 {
 647 }
 648
 649 static void G_GNUC_UNUSED
 650 sgen_client_binary_protocol_los_card_table_scan_end (long long timestamp, gboolean mod_union)
 651 {
 652 }
 653
 654 static void G_GNUC_UNUSED
 655 sgen_client_binary_protocol_finish_gray_stack_start (long long timestamp, int generation)
 656 {
 657 }
 658
 659 static void G_GNUC_UNUSED
 660 sgen_client_binary_protocol_finish_gray_stack_end (long long timestamp, int generation)
 661 {
 662 }
 663
 664 static void G_GNUC_UNUSED
 665 sgen_client_binary_protocol_worker_finish (long long timestamp, gboolean forced)
 666 {
 667 }
 668
 669 static void G_GNUC_UNUSED
 670 sgen_client_binary_protocol_evacuating_blocks (size_t block_size)
 671 {
 672 }
 673
 674 static void G_GNUC_UNUSED
 675 sgen_client_binary_protocol_concurrent_sweep_end (long long timestamp)
 676 {
 677 }
 678
 679 static void G_GNUC_UNUSED
 680 sgen_client_binary_protocol_header (long long check, int version, int ptr_size, gboolean little_endian)
 681 {
 682 }
 683
 684 static void G_GNUC_UNUSED
 685 sgen_client_binary_protocol_pin_stats (int objects_pinned_in_nursery, size_t bytes_pinned_in_nursery, int objects_pinned_in_major, size_t bytes_pinned_in_major)
 686 {
 687 }
 688
 689 static void G_GNUC_UNUSED
 690 sgen_client_binary_protocol_worker_finish_stats (int worker_index, int generation, gboolean forced, long long major_scan, long long los_scan, long long work_time)
 691 {
 692 }
 693
 694 static void G_GNUC_UNUSED
 695 sgen_client_binary_protocol_collection_end_stats (long long major_scan, long long los_scan, long long finish_stack)
 696 {
 697 }
 698
 699 #define TLAB_ACCESS_INIT        SgenThreadInfo *__thread_info__ = (SgenThreadInfo*)mono_tls_get_sgen_thread_info ()
 700 #define IN_CRITICAL_REGION (__thread_info__->client_info.in_critical_region)
 701
 702 /* Enter must be visible before anything is done in the critical region. */
 703 #define ENTER_CRITICAL_REGION do { mono_atomic_store_acquire (&IN_CRITICAL_REGION, 1); } while (0)
 704
 705 /* Exit must make sure all critical regions stores are visible before it signal the end of the region.
 706  * We don't need to emit a full barrier since we
 707  */
 708 #define EXIT_CRITICAL_REGION  do { mono_atomic_store_release (&IN_CRITICAL_REGION, 0); } while (0)
 709
 710 #ifndef DISABLE_CRITICAL_REGION
 711 /*
 712  * We can only use a critical region in the managed allocator if the JIT supports OP_ATOMIC_STORE_I4.
 713  *
 714  * TODO: Query the JIT instead of this ifdef hack.
 715  */
 716 #if defined (TARGET_X86) || defined (TARGET_AMD64) || (defined (TARGET_ARM) && defined (HAVE_ARMV7)) || defined (TARGET_ARM64)
 717 #define MANAGED_ALLOCATOR_CAN_USE_CRITICAL_REGION
 718 #endif
 719 #endif
 720
 721 #define SGEN_TV_DECLARE(name) gint64 name
 722 #define SGEN_TV_GETTIME(tv) tv = mono_100ns_ticks ()
 723 #define SGEN_TV_ELAPSED(start,end) ((gint64)(end-start))
 724
 725 guint64 mono_time_since_last_stw (void);
 726
 727 typedef MonoSemType SgenSemaphore;
 728
 729 #define SGEN_SEMAPHORE_INIT(sem,initial)        mono_os_sem_init ((sem), (initial))
 730 #define SGEN_SEMAPHORE_POST(sem)                mono_os_sem_post ((sem))
 731 #define SGEN_SEMAPHORE_WAIT(sem)                mono_os_sem_wait ((sem), MONO_SEM_FLAGS_NONE)
 732
 733 gboolean sgen_has_critical_method (void);
 734 gboolean sgen_is_critical_method (MonoMethod *method);
 735
 736 void sgen_set_use_managed_allocator (gboolean flag);
 737 gboolean sgen_is_managed_allocator (MonoMethod *method);
 738 gboolean sgen_has_managed_allocator (void);
 739
 740 void sgen_scan_for_registered_roots_in_domain (MonoDomain *domain, int root_type);
 741 void sgen_null_links_for_domain (MonoDomain *domain);
 742
 743 #endif