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-internal.h>
13 #include <mono/metadata/runtime.h>
14 #include <mono/utils/atomic.h>
15 #include <mono/utils/mono-threads.h>
20 mono_gc_base_init (void)
22 MonoThreadInfoCallbacks cb;
25 memset (&cb, 0, sizeof (cb));
26 /* TODO: This casts away an incompatible pointer type warning in the same
27 manner that boehm-gc does it. This is probably worth investigating
29 cb.mono_method_is_critical = (gpointer)mono_runtime_is_critical_method;
30 cb.mono_gc_pthread_create = (gpointer)mono_gc_pthread_create;
31 cb.thread_exit = mono_gc_pthread_exit;
33 mono_threads_init (&cb, sizeof (MonoThreadInfo));
35 mono_thread_info_attach (&dummy);
39 mono_gc_collect (int generation)
44 mono_gc_max_generation (void)
50 mono_gc_get_generation (MonoObject *object)
56 mono_gc_collection_count (int generation)
62 mono_gc_add_memory_pressure (gint64 value)
66 /* maybe track the size, not important, though */
68 mono_gc_get_used_size (void)
74 mono_gc_get_heap_size (void)
80 mono_gc_is_gc_thread (void)
86 mono_gc_register_thread (void *baseptr)
92 mono_gc_walk_heap (int flags, MonoGCReferences callback, void *data)
98 mono_object_is_alive (MonoObject* o)
104 mono_gc_enable_events (void)
109 mono_gc_register_root (char *start, size_t size, void *descr)
115 mono_gc_deregister_root (char* addr)
120 mono_gc_weak_link_add (void **link_addr, MonoObject *obj, gboolean track)
126 mono_gc_weak_link_remove (void **link_addr, gboolean track)
132 mono_gc_weak_link_get (void **link_addr)
138 mono_gc_make_descr_for_string (gsize *bitmap, int numbits)
144 mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size)
150 mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size)
156 mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
162 mono_gc_make_root_descr_all_refs (int numbits)
168 mono_gc_alloc_fixed (size_t size, void *descr)
170 return g_malloc0 (size);
174 mono_gc_free_fixed (void* addr)
180 mono_gc_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
182 *(void**)field_ptr = value;
186 mono_gc_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
188 *(void**)slot_ptr = value;
192 mono_gc_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
194 mono_gc_memmove_aligned (dest_ptr, src_ptr, count * sizeof (gpointer));
198 mono_gc_wbarrier_generic_store (gpointer ptr, MonoObject* value)
200 *(void**)ptr = value;
204 mono_gc_wbarrier_generic_store_atomic (gpointer ptr, MonoObject *value)
206 InterlockedWritePointer (ptr, value);
210 mono_gc_wbarrier_generic_nostore (gpointer ptr)
215 mono_gc_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
217 mono_gc_memmove_atomic (dest, src, count * mono_class_value_size (klass, NULL));
221 mono_gc_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
223 /* do not copy the sync state */
224 mono_gc_memmove_aligned ((char*)obj + sizeof (MonoObject), (char*)src + sizeof (MonoObject),
225 mono_object_class (obj)->instance_size - sizeof (MonoObject));
229 mono_gc_is_critical_method (MonoMethod *method)
235 mono_gc_get_managed_allocator (MonoClass *klass, gboolean for_box)
241 mono_gc_get_managed_array_allocator (MonoClass *klass)
247 mono_gc_get_managed_allocator_by_type (int atype)
253 mono_gc_get_managed_allocator_types (void)
259 mono_gc_get_gc_name (void)
265 mono_gc_add_weak_track_handle (MonoObject *obj, guint32 gchandle)
270 mono_gc_change_weak_track_handle (MonoObject *old_obj, MonoObject *obj, guint32 gchandle)
275 mono_gc_remove_weak_track_handle (guint32 gchandle)
280 mono_gc_remove_weak_track_object (MonoDomain *domain, MonoObject *obj)
286 mono_gc_clear_domain (MonoDomain *domain)
291 mono_gc_get_suspend_signal (void)
297 mono_gc_get_restart_signal (void)
303 mono_gc_get_write_barrier (void)
305 g_assert_not_reached ();
310 mono_gc_invoke_with_gc_lock (MonoGCLockedCallbackFunc func, void *data)
316 mono_gc_get_description (void)
318 return g_strdup (DEFAULT_GC_NAME);
322 mono_gc_set_desktop_mode (void)
327 mono_gc_is_moving (void)
333 mono_gc_is_disabled (void)
339 mono_gc_wbarrier_value_copy_bitmap (gpointer _dest, gpointer _src, int size, unsigned bitmap)
341 g_assert_not_reached ();
345 mono_gc_get_card_table (int *shift_bits, gpointer *card_mask)
347 g_assert_not_reached ();
352 mono_gc_card_table_nursery_check (void)
354 g_assert_not_reached ();
359 mono_gc_get_nursery (int *shift_bits, size_t *size)
365 mono_gc_set_current_thread_appdomain (MonoDomain *domain)
370 mono_gc_precise_stack_mark_enabled (void)
376 mono_gc_get_logfile (void)
382 mono_gc_conservatively_scan_area (void *start, void *end)
384 g_assert_not_reached ();
388 mono_gc_scan_object (void *obj, void *gc_data)
390 g_assert_not_reached ();
395 mono_gc_get_bitmap_for_descr (void *descr, int *numbits)
397 g_assert_not_reached ();
402 mono_gc_set_gc_callbacks (MonoGCCallbacks *callbacks)
407 mono_gc_set_stack_end (void *stack_end)
412 mono_gc_get_los_limit (void)
418 mono_gc_user_markers_supported (void)
424 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
426 g_assert_not_reached ();
433 mono_gc_pthread_create (pthread_t *new_thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
435 return pthread_create (new_thread, attr, start_routine, arg);
439 mono_gc_pthread_join (pthread_t thread, void **retval)
441 return pthread_join (thread, retval);
445 mono_gc_pthread_detach (pthread_t thread)
447 return pthread_detach (thread);
451 mono_gc_pthread_exit (void *retval)
453 pthread_exit (retval);
456 void mono_gc_set_skip_thread (gboolean value)
462 BOOL APIENTRY mono_gc_dllmain (HMODULE module_handle, DWORD reason, LPVOID reserved)
469 mono_gc_get_vtable_bits (MonoClass *class)
475 mono_gc_register_altstack (gpointer stack, gint32 stack_size, gpointer altstack, gint32 altstack_size)
480 mono_gc_set_allow_synchronous_major (gboolean flag)