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 ();
29 memset (&cb, 0, sizeof (cb));
30 /* TODO: This casts away an incompatible pointer type warning in the same
31 manner that boehm-gc does it. This is probably worth investigating
33 cb.mono_method_is_critical = (gpointer)mono_runtime_is_critical_method;
35 mono_threads_init (&cb, sizeof (MonoThreadInfo));
37 mono_thread_info_attach (&dummy);
41 mono_gc_base_cleanup (void)
46 mono_gc_collect (int generation)
51 mono_gc_max_generation (void)
57 mono_gc_get_generation (MonoObject *object)
63 mono_gc_collection_count (int generation)
69 mono_gc_add_memory_pressure (gint64 value)
73 /* maybe track the size, not important, though */
75 mono_gc_get_used_size (void)
81 mono_gc_get_heap_size (void)
87 mono_gc_is_gc_thread (void)
93 mono_gc_register_thread (void *baseptr)
99 mono_gc_walk_heap (int flags, MonoGCReferences callback, void *data)
105 mono_object_is_alive (MonoObject* o)
111 mono_gc_enable_events (void)
116 mono_gc_enable_alloc_events (void)
121 mono_gc_register_root (char *start, size_t size, void *descr, MonoGCRootSource source, const char *msg)
127 mono_gc_deregister_root (char* addr)
132 mono_gc_weak_link_add (void **link_addr, MonoObject *obj, gboolean track)
138 mono_gc_weak_link_remove (void **link_addr, gboolean track)
144 mono_gc_weak_link_get (void **link_addr)
150 mono_gc_make_descr_for_string (gsize *bitmap, int numbits)
156 mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size)
162 mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size)
168 mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
174 mono_gc_make_root_descr_all_refs (int numbits)
180 mono_gc_alloc_fixed (size_t size, void *descr, MonoGCRootSource source, const char *msg)
182 return g_malloc0 (size);
186 mono_gc_free_fixed (void* addr)
192 mono_gc_alloc_obj (MonoVTable *vtable, size_t size)
194 MonoObject *obj = calloc (1, size);
196 obj->vtable = vtable;
202 mono_gc_alloc_vector (MonoVTable *vtable, size_t size, uintptr_t max_length)
204 MonoArray *obj = calloc (1, size);
206 obj->obj.vtable = vtable;
207 obj->max_length = max_length;
213 mono_gc_alloc_array (MonoVTable *vtable, size_t size, uintptr_t max_length, uintptr_t bounds_size)
215 MonoArray *obj = calloc (1, size);
217 obj->obj.vtable = vtable;
218 obj->max_length = max_length;
221 obj->bounds = (MonoArrayBounds *) ((char *) obj + size - bounds_size);
227 mono_gc_alloc_string (MonoVTable *vtable, size_t size, gint32 len)
229 MonoString *obj = calloc (1, size);
231 obj->object.vtable = vtable;
233 obj->chars [len] = 0;
239 mono_gc_alloc_mature (MonoVTable *vtable, size_t size)
241 return mono_gc_alloc_obj (vtable, size);
245 mono_gc_alloc_pinned_obj (MonoVTable *vtable, size_t size)
247 return mono_gc_alloc_obj (vtable, size);
251 mono_gc_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
253 *(void**)field_ptr = value;
257 mono_gc_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
259 *(void**)slot_ptr = value;
263 mono_gc_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
265 mono_gc_memmove_aligned (dest_ptr, src_ptr, count * sizeof (gpointer));
269 mono_gc_wbarrier_generic_store (gpointer ptr, MonoObject* value)
271 *(void**)ptr = value;
275 mono_gc_wbarrier_generic_store_atomic (gpointer ptr, MonoObject *value)
277 InterlockedWritePointer (ptr, value);
281 mono_gc_wbarrier_generic_nostore (gpointer ptr)
286 mono_gc_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
288 mono_gc_memmove_atomic (dest, src, count * mono_class_value_size (klass, NULL));
292 mono_gc_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
294 /* do not copy the sync state */
295 mono_gc_memmove_aligned ((char*)obj + sizeof (MonoObject), (char*)src + sizeof (MonoObject),
296 mono_object_class (obj)->instance_size - sizeof (MonoObject));
300 mono_gc_is_critical_method (MonoMethod *method)
306 mono_gc_get_aligned_size_for_allocator (int size)
312 mono_gc_get_managed_allocator (MonoClass *klass, gboolean for_box, gboolean known_instance_size)
318 mono_gc_get_managed_array_allocator (MonoClass *klass)
324 mono_gc_get_managed_allocator_by_type (int atype, ManagedAllocatorVariant variant)
330 mono_gc_get_managed_allocator_types (void)
336 mono_gc_get_gc_name (void)
342 mono_gc_add_weak_track_handle (MonoObject *obj, guint32 gchandle)
347 mono_gc_change_weak_track_handle (MonoObject *old_obj, MonoObject *obj, guint32 gchandle)
352 mono_gc_remove_weak_track_handle (guint32 gchandle)
357 mono_gc_remove_weak_track_object (MonoDomain *domain, MonoObject *obj)
363 mono_gc_clear_domain (MonoDomain *domain)
368 mono_gc_get_suspend_signal (void)
374 mono_gc_get_restart_signal (void)
380 mono_gc_get_specific_write_barrier (gboolean is_concurrent)
382 g_assert_not_reached ();
387 mono_gc_get_write_barrier (void)
389 g_assert_not_reached ();
394 mono_gc_invoke_with_gc_lock (MonoGCLockedCallbackFunc func, void *data)
400 mono_gc_get_description (void)
402 return g_strdup (DEFAULT_GC_NAME);
406 mono_gc_set_desktop_mode (void)
411 mono_gc_is_moving (void)
417 mono_gc_is_disabled (void)
423 mono_gc_wbarrier_value_copy_bitmap (gpointer _dest, gpointer _src, int size, unsigned bitmap)
425 g_assert_not_reached ();
429 mono_gc_get_card_table (int *shift_bits, gpointer *card_mask)
431 g_assert_not_reached ();
436 mono_gc_card_table_nursery_check (void)
438 g_assert_not_reached ();
443 mono_gc_get_nursery (int *shift_bits, size_t *size)
449 mono_gc_set_current_thread_appdomain (MonoDomain *domain)
454 mono_gc_precise_stack_mark_enabled (void)
460 mono_gc_get_logfile (void)
466 mono_gc_conservatively_scan_area (void *start, void *end)
468 g_assert_not_reached ();
472 mono_gc_scan_object (void *obj, void *gc_data)
474 g_assert_not_reached ();
479 mono_gc_get_bitmap_for_descr (void *descr, int *numbits)
481 g_assert_not_reached ();
486 mono_gc_set_gc_callbacks (MonoGCCallbacks *callbacks)
491 mono_gc_set_stack_end (void *stack_end)
496 mono_gc_get_los_limit (void)
502 mono_gc_user_markers_supported (void)
508 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
510 g_assert_not_reached ();
516 mono_gc_pthread_create (pthread_t *new_thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
518 return pthread_create (new_thread, attr, start_routine, arg);
522 void mono_gc_set_skip_thread (gboolean value)
527 BOOL APIENTRY mono_gc_dllmain (HMODULE module_handle, DWORD reason, LPVOID reserved)
534 mono_gc_get_vtable_bits (MonoClass *klass)
540 mono_gc_register_altstack (gpointer stack, gint32 stack_size, gpointer altstack, gint32 altstack_size)
545 mono_gc_is_null (void)