2 * null-gc.c: GC implementation using malloc: will leak everything, just for testing.
4 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
5 * Copyright 2004-2011 Novell, Inc (http://www.novell.com)
6 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
7 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
12 #include <mono/metadata/mono-gc.h>
13 #include <mono/metadata/gc-internals.h>
14 #include <mono/metadata/runtime.h>
15 #include <mono/utils/atomic.h>
16 #include <mono/utils/mono-threads.h>
17 #include <mono/utils/mono-counters.h>
22 mono_gc_base_init (void)
24 MonoThreadInfoCallbacks cb;
27 mono_counters_init ();
30 mono_w32handle_init ();
33 memset (&cb, 0, sizeof (cb));
34 /* TODO: This casts away an incompatible pointer type warning in the same
35 manner that boehm-gc does it. This is probably worth investigating
37 cb.mono_method_is_critical = (gpointer)mono_runtime_is_critical_method;
39 mono_threads_init (&cb, sizeof (MonoThreadInfo));
41 mono_thread_info_attach (&dummy);
45 mono_gc_base_cleanup (void)
50 mono_gc_collect (int generation)
55 mono_gc_max_generation (void)
61 mono_gc_get_generation (MonoObject *object)
67 mono_gc_collection_count (int generation)
73 mono_gc_add_memory_pressure (gint64 value)
77 /* maybe track the size, not important, though */
79 mono_gc_get_used_size (void)
85 mono_gc_get_heap_size (void)
91 mono_gc_is_gc_thread (void)
97 mono_gc_register_thread (void *baseptr)
103 mono_gc_walk_heap (int flags, MonoGCReferences callback, void *data)
109 mono_object_is_alive (MonoObject* o)
115 mono_gc_enable_events (void)
120 mono_gc_enable_alloc_events (void)
125 mono_gc_register_root (char *start, size_t size, void *descr, MonoGCRootSource source, const char *msg)
131 mono_gc_deregister_root (char* addr)
136 mono_gc_weak_link_add (void **link_addr, MonoObject *obj, gboolean track)
142 mono_gc_weak_link_remove (void **link_addr, gboolean track)
148 mono_gc_weak_link_get (void **link_addr)
154 mono_gc_make_descr_for_string (gsize *bitmap, int numbits)
160 mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size)
166 mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size)
172 mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
178 mono_gc_make_root_descr_all_refs (int numbits)
184 mono_gc_alloc_fixed (size_t size, void *descr, MonoGCRootSource source, const char *msg)
186 return g_malloc0 (size);
190 mono_gc_free_fixed (void* addr)
196 mono_gc_alloc_obj (MonoVTable *vtable, size_t size)
198 MonoObject *obj = g_calloc (1, size);
200 obj->vtable = vtable;
206 mono_gc_alloc_vector (MonoVTable *vtable, size_t size, uintptr_t max_length)
208 MonoArray *obj = g_calloc (1, size);
210 obj->obj.vtable = vtable;
211 obj->max_length = max_length;
217 mono_gc_alloc_array (MonoVTable *vtable, size_t size, uintptr_t max_length, uintptr_t bounds_size)
219 MonoArray *obj = g_calloc (1, size);
221 obj->obj.vtable = vtable;
222 obj->max_length = max_length;
225 obj->bounds = (MonoArrayBounds *) ((char *) obj + size - bounds_size);
231 mono_gc_alloc_string (MonoVTable *vtable, size_t size, gint32 len)
233 MonoString *obj = g_calloc (1, size);
235 obj->object.vtable = vtable;
237 obj->chars [len] = 0;
243 mono_gc_alloc_mature (MonoVTable *vtable, size_t size)
245 return mono_gc_alloc_obj (vtable, size);
249 mono_gc_alloc_pinned_obj (MonoVTable *vtable, size_t size)
251 return mono_gc_alloc_obj (vtable, size);
255 mono_gc_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
257 *(void**)field_ptr = value;
261 mono_gc_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
263 *(void**)slot_ptr = value;
267 mono_gc_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
269 mono_gc_memmove_aligned (dest_ptr, src_ptr, count * sizeof (gpointer));
273 mono_gc_wbarrier_generic_store (gpointer ptr, MonoObject* value)
275 *(void**)ptr = value;
279 mono_gc_wbarrier_generic_store_atomic (gpointer ptr, MonoObject *value)
281 InterlockedWritePointer (ptr, value);
285 mono_gc_wbarrier_generic_nostore (gpointer ptr)
290 mono_gc_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
292 mono_gc_memmove_atomic (dest, src, count * mono_class_value_size (klass, NULL));
296 mono_gc_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
298 /* do not copy the sync state */
299 mono_gc_memmove_aligned ((char*)obj + sizeof (MonoObject), (char*)src + sizeof (MonoObject),
300 mono_object_class (obj)->instance_size - sizeof (MonoObject));
304 mono_gc_is_critical_method (MonoMethod *method)
310 mono_gc_get_aligned_size_for_allocator (int size)
316 mono_gc_get_managed_allocator (MonoClass *klass, gboolean for_box, gboolean known_instance_size)
322 mono_gc_get_managed_array_allocator (MonoClass *klass)
328 mono_gc_get_managed_allocator_by_type (int atype, ManagedAllocatorVariant variant)
334 mono_gc_get_managed_allocator_types (void)
340 mono_gc_get_gc_name (void)
346 mono_gc_add_weak_track_handle (MonoObject *obj, guint32 gchandle)
351 mono_gc_change_weak_track_handle (MonoObject *old_obj, MonoObject *obj, guint32 gchandle)
356 mono_gc_remove_weak_track_handle (guint32 gchandle)
361 mono_gc_remove_weak_track_object (MonoDomain *domain, MonoObject *obj)
367 mono_gc_clear_domain (MonoDomain *domain)
372 mono_gc_suspend_finalizers (void)
377 mono_gc_get_suspend_signal (void)
383 mono_gc_get_restart_signal (void)
389 mono_gc_get_specific_write_barrier (gboolean is_concurrent)
391 g_assert_not_reached ();
396 mono_gc_get_write_barrier (void)
398 g_assert_not_reached ();
403 mono_gc_invoke_with_gc_lock (MonoGCLockedCallbackFunc func, void *data)
409 mono_gc_get_description (void)
411 return g_strdup (DEFAULT_GC_NAME);
415 mono_gc_set_desktop_mode (void)
420 mono_gc_is_moving (void)
426 mono_gc_is_disabled (void)
432 mono_gc_wbarrier_value_copy_bitmap (gpointer _dest, gpointer _src, int size, unsigned bitmap)
434 g_assert_not_reached ();
438 mono_gc_get_card_table (int *shift_bits, gpointer *card_mask)
440 g_assert_not_reached ();
445 mono_gc_card_table_nursery_check (void)
447 g_assert_not_reached ();
452 mono_gc_get_nursery (int *shift_bits, size_t *size)
458 mono_gc_set_current_thread_appdomain (MonoDomain *domain)
463 mono_gc_precise_stack_mark_enabled (void)
469 mono_gc_get_logfile (void)
475 mono_gc_conservatively_scan_area (void *start, void *end)
477 g_assert_not_reached ();
481 mono_gc_scan_object (void *obj, void *gc_data)
483 g_assert_not_reached ();
488 mono_gc_get_bitmap_for_descr (void *descr, int *numbits)
490 g_assert_not_reached ();
495 mono_gc_set_gc_callbacks (MonoGCCallbacks *callbacks)
500 mono_gc_set_stack_end (void *stack_end)
505 mono_gc_get_los_limit (void)
511 mono_gc_user_markers_supported (void)
517 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
519 g_assert_not_reached ();
525 mono_gc_pthread_create (pthread_t *new_thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
527 return pthread_create (new_thread, attr, start_routine, arg);
531 void mono_gc_set_skip_thread (gboolean value)
536 BOOL APIENTRY mono_gc_dllmain (HMODULE module_handle, DWORD reason, LPVOID reserved)
543 mono_gc_get_vtable_bits (MonoClass *klass)
549 mono_gc_register_altstack (gpointer stack, gint32 stack_size, gpointer altstack, gint32 altstack_size)
554 mono_gc_is_null (void)
560 // Quiet Visual Studio linker warning, LNK4221, in cases when this source file intentional ends up empty.
561 void __mono_win32_null_gc_quiet_lnk4221(void) {}
563 #endif /* HAVE_NULL_GC */