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)
11 #include <mono/metadata/mono-gc.h>
12 #include <mono/metadata/gc-internals.h>
13 #include <mono/metadata/runtime.h>
14 #include <mono/utils/atomic.h>
15 #include <mono/utils/mono-threads.h>
16 #include <mono/utils/mono-counters.h>
21 mono_gc_base_init (void)
23 MonoThreadInfoCallbacks cb;
26 mono_counters_init ();
28 memset (&cb, 0, sizeof (cb));
29 /* TODO: This casts away an incompatible pointer type warning in the same
30 manner that boehm-gc does it. This is probably worth investigating
32 cb.mono_method_is_critical = (gpointer)mono_runtime_is_critical_method;
34 mono_threads_init (&cb, sizeof (MonoThreadInfo));
36 mono_thread_info_attach (&dummy);
40 mono_gc_base_cleanup (void)
45 mono_gc_collect (int generation)
50 mono_gc_max_generation (void)
56 mono_gc_get_generation (MonoObject *object)
62 mono_gc_collection_count (int generation)
68 mono_gc_add_memory_pressure (gint64 value)
72 /* maybe track the size, not important, though */
74 mono_gc_get_used_size (void)
80 mono_gc_get_heap_size (void)
86 mono_gc_is_gc_thread (void)
92 mono_gc_register_thread (void *baseptr)
98 mono_gc_walk_heap (int flags, MonoGCReferences callback, void *data)
104 mono_object_is_alive (MonoObject* o)
110 mono_gc_enable_events (void)
115 mono_gc_enable_alloc_events (void)
120 mono_gc_register_root (char *start, size_t size, void *descr, MonoGCRootSource source, const char *msg)
126 mono_gc_deregister_root (char* addr)
131 mono_gc_weak_link_add (void **link_addr, MonoObject *obj, gboolean track)
137 mono_gc_weak_link_remove (void **link_addr, gboolean track)
143 mono_gc_weak_link_get (void **link_addr)
149 mono_gc_make_descr_for_string (gsize *bitmap, int numbits)
155 mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size)
161 mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size)
167 mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
173 mono_gc_make_root_descr_all_refs (int numbits)
179 mono_gc_alloc_fixed (size_t size, void *descr, MonoGCRootSource source, const char *msg)
181 return g_malloc0 (size);
185 mono_gc_free_fixed (void* addr)
191 mono_gc_alloc_obj (MonoVTable *vtable, size_t size)
193 MonoObject *obj = calloc (1, size);
195 obj->vtable = vtable;
201 mono_gc_alloc_vector (MonoVTable *vtable, size_t size, uintptr_t max_length)
203 MonoArray *obj = calloc (1, size);
205 obj->obj.vtable = vtable;
206 obj->max_length = max_length;
212 mono_gc_alloc_array (MonoVTable *vtable, size_t size, uintptr_t max_length, uintptr_t bounds_size)
214 MonoArray *obj = calloc (1, size);
216 obj->obj.vtable = vtable;
217 obj->max_length = max_length;
220 obj->bounds = (MonoArrayBounds *) ((char *) obj + size - bounds_size);
226 mono_gc_alloc_string (MonoVTable *vtable, size_t size, gint32 len)
228 MonoString *obj = calloc (1, size);
230 obj->object.vtable = vtable;
232 obj->chars [len] = 0;
238 mono_gc_alloc_mature (MonoVTable *vtable, size_t size)
240 return mono_gc_alloc_obj (vtable, size);
244 mono_gc_alloc_pinned_obj (MonoVTable *vtable, size_t size)
246 return mono_gc_alloc_obj (vtable, size);
250 mono_gc_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
252 *(void**)field_ptr = value;
256 mono_gc_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
258 *(void**)slot_ptr = value;
262 mono_gc_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
264 mono_gc_memmove_aligned (dest_ptr, src_ptr, count * sizeof (gpointer));
268 mono_gc_wbarrier_generic_store (gpointer ptr, MonoObject* value)
270 *(void**)ptr = value;
274 mono_gc_wbarrier_generic_store_atomic (gpointer ptr, MonoObject *value)
276 InterlockedWritePointer (ptr, value);
280 mono_gc_wbarrier_generic_nostore (gpointer ptr)
285 mono_gc_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
287 mono_gc_memmove_atomic (dest, src, count * mono_class_value_size (klass, NULL));
291 mono_gc_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
293 /* do not copy the sync state */
294 mono_gc_memmove_aligned ((char*)obj + sizeof (MonoObject), (char*)src + sizeof (MonoObject),
295 mono_object_class (obj)->instance_size - sizeof (MonoObject));
299 mono_gc_is_critical_method (MonoMethod *method)
305 mono_gc_get_aligned_size_for_allocator (int size)
311 mono_gc_get_managed_allocator (MonoClass *klass, gboolean for_box, gboolean known_instance_size)
317 mono_gc_get_managed_array_allocator (MonoClass *klass)
323 mono_gc_get_managed_allocator_by_type (int atype, gboolean slowpath)
329 mono_gc_get_managed_allocator_types (void)
335 mono_gc_get_gc_name (void)
341 mono_gc_add_weak_track_handle (MonoObject *obj, guint32 gchandle)
346 mono_gc_change_weak_track_handle (MonoObject *old_obj, MonoObject *obj, guint32 gchandle)
351 mono_gc_remove_weak_track_handle (guint32 gchandle)
356 mono_gc_remove_weak_track_object (MonoDomain *domain, MonoObject *obj)
362 mono_gc_clear_domain (MonoDomain *domain)
367 mono_gc_get_suspend_signal (void)
373 mono_gc_get_restart_signal (void)
379 mono_gc_get_specific_write_barrier (gboolean is_concurrent)
381 g_assert_not_reached ();
386 mono_gc_get_write_barrier (void)
388 g_assert_not_reached ();
393 mono_gc_invoke_with_gc_lock (MonoGCLockedCallbackFunc func, void *data)
399 mono_gc_get_description (void)
401 return g_strdup (DEFAULT_GC_NAME);
405 mono_gc_set_desktop_mode (void)
410 mono_gc_is_moving (void)
416 mono_gc_is_disabled (void)
422 mono_gc_wbarrier_value_copy_bitmap (gpointer _dest, gpointer _src, int size, unsigned bitmap)
424 g_assert_not_reached ();
428 mono_gc_get_card_table (int *shift_bits, gpointer *card_mask)
430 g_assert_not_reached ();
435 mono_gc_card_table_nursery_check (void)
437 g_assert_not_reached ();
442 mono_gc_get_nursery (int *shift_bits, size_t *size)
448 mono_gc_set_current_thread_appdomain (MonoDomain *domain)
453 mono_gc_precise_stack_mark_enabled (void)
459 mono_gc_get_logfile (void)
465 mono_gc_conservatively_scan_area (void *start, void *end)
467 g_assert_not_reached ();
471 mono_gc_scan_object (void *obj, void *gc_data)
473 g_assert_not_reached ();
478 mono_gc_get_bitmap_for_descr (void *descr, int *numbits)
480 g_assert_not_reached ();
485 mono_gc_set_gc_callbacks (MonoGCCallbacks *callbacks)
490 mono_gc_set_stack_end (void *stack_end)
495 mono_gc_get_los_limit (void)
501 mono_gc_user_markers_supported (void)
507 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
509 g_assert_not_reached ();
515 mono_gc_pthread_create (pthread_t *new_thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
517 return pthread_create (new_thread, attr, start_routine, arg);
521 void mono_gc_set_skip_thread (gboolean value)
526 BOOL APIENTRY mono_gc_dllmain (HMODULE module_handle, DWORD reason, LPVOID reserved)
533 mono_gc_get_vtable_bits (MonoClass *klass)
539 mono_gc_register_altstack (gpointer stack, gint32 stack_size, gpointer altstack, gint32 altstack_size)
544 mono_gc_is_null (void)