3 * GC implementation using malloc: will leak everything, just for testing.
5 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
6 * Copyright 2004-2011 Novell, Inc (http://www.novell.com)
7 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
8 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
13 #include <mono/metadata/mono-gc.h>
14 #include <mono/metadata/gc-internals.h>
15 #include <mono/metadata/runtime.h>
16 #include <mono/metadata/w32handle.h>
17 #include <mono/utils/atomic.h>
18 #include <mono/utils/mono-threads.h>
19 #include <mono/utils/mono-counters.h>
20 #include <mono/metadata/null-gc-handles.h>
24 static gboolean gc_inited = FALSE;
27 mono_gc_base_init (void)
32 mono_counters_init ();
35 mono_w32handle_init ();
38 mono_thread_callbacks_init ();
39 mono_thread_info_init (sizeof (MonoThreadInfo));
41 mono_thread_info_attach ();
43 null_gc_handles_init ();
49 mono_gc_base_cleanup (void)
54 mono_gc_collect (int generation)
59 mono_gc_max_generation (void)
65 mono_gc_get_generation (MonoObject *object)
71 mono_gc_collection_count (int generation)
77 mono_gc_add_memory_pressure (gint64 value)
81 /* maybe track the size, not important, though */
83 mono_gc_get_used_size (void)
89 mono_gc_get_heap_size (void)
95 mono_gc_is_gc_thread (void)
101 mono_gc_walk_heap (int flags, MonoGCReferences callback, void *data)
107 mono_object_is_alive (MonoObject* o)
113 mono_gc_register_root (char *start, size_t size, void *descr, MonoGCRootSource source, const char *msg)
119 mono_gc_deregister_root (char* addr)
124 mono_gc_make_descr_for_string (gsize *bitmap, int numbits)
130 mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size)
136 mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size)
142 mono_gc_make_descr_from_bitmap (gsize *bitmap, int numbits)
148 mono_gc_make_vector_descr (void)
154 mono_gc_make_root_descr_all_refs (int numbits)
160 mono_gc_alloc_fixed (size_t size, void *descr, MonoGCRootSource source, const char *msg)
162 return g_malloc0 (size);
166 mono_gc_free_fixed (void* addr)
172 mono_gc_alloc_obj (MonoVTable *vtable, size_t size)
174 MonoObject *obj = g_calloc (1, size);
176 obj->vtable = vtable;
182 mono_gc_alloc_vector (MonoVTable *vtable, size_t size, uintptr_t max_length)
184 MonoArray *obj = g_calloc (1, size);
186 obj->obj.vtable = vtable;
187 obj->max_length = max_length;
193 mono_gc_alloc_array (MonoVTable *vtable, size_t size, uintptr_t max_length, uintptr_t bounds_size)
195 MonoArray *obj = g_calloc (1, size);
197 obj->obj.vtable = vtable;
198 obj->max_length = max_length;
201 obj->bounds = (MonoArrayBounds *) ((char *) obj + size - bounds_size);
207 mono_gc_alloc_string (MonoVTable *vtable, size_t size, gint32 len)
209 MonoString *obj = g_calloc (1, size);
211 obj->object.vtable = vtable;
213 obj->chars [len] = 0;
219 mono_gc_alloc_mature (MonoVTable *vtable, size_t size)
221 return mono_gc_alloc_obj (vtable, size);
225 mono_gc_alloc_pinned_obj (MonoVTable *vtable, size_t size)
227 return mono_gc_alloc_obj (vtable, size);
231 mono_gc_wbarrier_set_field (MonoObject *obj, gpointer field_ptr, MonoObject* value)
233 *(void**)field_ptr = value;
237 mono_gc_wbarrier_set_arrayref (MonoArray *arr, gpointer slot_ptr, MonoObject* value)
239 *(void**)slot_ptr = value;
243 mono_gc_wbarrier_arrayref_copy (gpointer dest_ptr, gpointer src_ptr, int count)
245 mono_gc_memmove_aligned (dest_ptr, src_ptr, count * sizeof (gpointer));
249 mono_gc_wbarrier_generic_store (gpointer ptr, MonoObject* value)
251 *(void**)ptr = value;
255 mono_gc_wbarrier_generic_store_atomic (gpointer ptr, MonoObject *value)
257 InterlockedWritePointer (ptr, value);
261 mono_gc_wbarrier_generic_nostore (gpointer ptr)
266 mono_gc_wbarrier_value_copy (gpointer dest, gpointer src, int count, MonoClass *klass)
268 mono_gc_memmove_atomic (dest, src, count * mono_class_value_size (klass, NULL));
272 mono_gc_wbarrier_object_copy (MonoObject* obj, MonoObject *src)
274 /* do not copy the sync state */
275 mono_gc_memmove_aligned ((char*)obj + sizeof (MonoObject), (char*)src + sizeof (MonoObject),
276 mono_object_class (obj)->instance_size - sizeof (MonoObject));
280 mono_gc_is_critical_method (MonoMethod *method)
286 mono_gc_thread_attach (MonoThreadInfo* info)
288 info->handle_stack = mono_handle_stack_alloc ();
293 mono_gc_thread_detach_with_lock (MonoThreadInfo *p)
295 mono_handle_stack_free (p->handle_stack);
299 mono_gc_thread_in_critical_region (MonoThreadInfo *info)
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, ManagedAllocatorVariant variant)
329 mono_gc_get_managed_allocator_types (void)
335 mono_gc_get_gc_name (void)
341 mono_gc_clear_domain (MonoDomain *domain)
346 mono_gc_suspend_finalizers (void)
351 mono_gc_get_suspend_signal (void)
357 mono_gc_get_restart_signal (void)
363 mono_gc_get_specific_write_barrier (gboolean is_concurrent)
365 g_assert_not_reached ();
370 mono_gc_get_write_barrier (void)
372 g_assert_not_reached ();
377 mono_gc_invoke_with_gc_lock (MonoGCLockedCallbackFunc func, void *data)
383 mono_gc_get_description (void)
385 return g_strdup (DEFAULT_GC_NAME);
389 mono_gc_set_desktop_mode (void)
394 mono_gc_is_moving (void)
400 mono_gc_is_disabled (void)
406 mono_gc_wbarrier_range_copy (gpointer _dest, gpointer _src, int size)
408 g_assert_not_reached ();
412 mono_gc_get_range_copy_func (void)
414 return &mono_gc_wbarrier_range_copy;
418 mono_gc_get_card_table (int *shift_bits, gpointer *card_mask)
420 g_assert_not_reached ();
425 mono_gc_card_table_nursery_check (void)
427 g_assert_not_reached ();
432 mono_gc_get_nursery (int *shift_bits, size_t *size)
438 mono_gc_precise_stack_mark_enabled (void)
444 mono_gc_get_logfile (void)
450 mono_gc_params_set (const char* options)
455 mono_gc_debug_set (const char* options)
460 mono_gc_conservatively_scan_area (void *start, void *end)
462 g_assert_not_reached ();
466 mono_gc_scan_object (void *obj, void *gc_data)
468 g_assert_not_reached ();
473 mono_gc_get_bitmap_for_descr (void *descr, int *numbits)
475 g_assert_not_reached ();
480 mono_gc_set_gc_callbacks (MonoGCCallbacks *callbacks)
485 mono_gc_set_stack_end (void *stack_end)
490 mono_gc_get_los_limit (void)
496 mono_gc_user_markers_supported (void)
502 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
504 g_assert_not_reached ();
510 mono_gc_pthread_create (pthread_t *new_thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
512 return pthread_create (new_thread, attr, start_routine, arg);
516 void mono_gc_set_skip_thread (gboolean value)
521 BOOL APIENTRY mono_gc_dllmain (HMODULE module_handle, DWORD reason, LPVOID reserved)
528 mono_gc_get_vtable_bits (MonoClass *klass)
534 mono_gc_register_altstack (gpointer stack, gint32 stack_size, gpointer altstack, gint32 altstack_size)
539 mono_gc_is_null (void)
545 mono_gc_invoke_finalizers (void)
551 mono_gc_pending_finalizers (void)
558 MONO_EMPTY_SOURCE_FILE (null_gc);
559 #endif /* HAVE_NULL_GC */