-int mono_gc_invoke_finalizers (void);
-gboolean mono_gc_pending_finalizers (void);
-void mono_gc_finalize_notify (void);
-
-void* mono_gc_alloc_pinned_obj (MonoVTable *vtable, size_t size);
-void* mono_gc_alloc_obj (MonoVTable *vtable, size_t size);
-void* mono_gc_make_descr_for_string (void);
-void* mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size);
-void* mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size);
-
-void mono_gc_register_for_finalization (MonoObject *obj, void *user_data);
-void mono_gc_add_memory_pressure (gint64 value);
-int mono_gc_register_root (char *start, size_t size, void *descr);
-void mono_gc_deregister_root (char* addr);
-#endif /* __MONO_METADATA_GC_H__ */
+gboolean mono_gc_pending_finalizers (void) MONO_INTERNAL;
+void mono_gc_finalize_notify (void) MONO_INTERNAL;
+
+void* mono_gc_alloc_pinned_obj (MonoVTable *vtable, size_t size) MONO_INTERNAL;
+void* mono_gc_alloc_obj (MonoVTable *vtable, size_t size) MONO_INTERNAL;
+void* mono_gc_alloc_vector (MonoVTable *vtable, size_t size, mono_array_size_t max_length) MONO_INTERNAL;
+void* mono_gc_alloc_array (MonoVTable *vtable, size_t size, mono_array_size_t max_length, mono_array_size_t bounds_size) MONO_INTERNAL;
+void* mono_gc_make_descr_for_string (gsize *bitmap, int numbits) MONO_INTERNAL;
+void* mono_gc_make_descr_for_object (gsize *bitmap, int numbits, size_t obj_size) MONO_INTERNAL;
+void* mono_gc_make_descr_for_array (int vector, gsize *elem_bitmap, int numbits, size_t elem_size) MONO_INTERNAL;
+
+void mono_gc_register_for_finalization (MonoObject *obj, void *user_data) MONO_INTERNAL;
+void mono_gc_add_memory_pressure (gint64 value) MONO_INTERNAL;
+int mono_gc_register_root (char *start, size_t size, void *descr) MONO_INTERNAL;
+void mono_gc_deregister_root (char* addr) MONO_INTERNAL;
+int mono_gc_finalizers_for_domain (MonoDomain *domain, MonoObject **out_array, int out_size) MONO_INTERNAL;
+void mono_gc_run_finalize (void *obj, void *data) MONO_INTERNAL;
+void mono_gc_clear_domain (MonoDomain * domain) MONO_INTERNAL;
+
+/*
+ * Register a root which can only be written using a write barrier.
+ * Writes to the root must be done using a write barrier (MONO_ROOT_SETREF).
+ * If the root uses an user defined mark routine, the writes are not required to be
+ * to the area between START and START+SIZE.
+ * The write barrier allows the GC to avoid scanning this root at each collection, so it
+ * is more efficient.
+ * FIXME: Add an API for clearing remset entries if a root with a user defined
+ * mark routine is deleted.
+ */
+int mono_gc_register_root_wbarrier (char *start, size_t size, void *descr) MONO_INTERNAL;
+
+void mono_gc_wbarrier_set_root (gpointer ptr, MonoObject *value) MONO_INTERNAL;
+
+/* Set a field of a root registered using mono_gc_register_root_wbarrier () */
+#define MONO_ROOT_SETREF(s,fieldname,value) do { \
+ mono_gc_wbarrier_set_root (&((s)->fieldname), (MonoObject*)value); \
+} while (0)
+
+void mono_gc_finalize_threadpool_threads (void) MONO_INTERNAL;
+
+/* fast allocation support */
+MonoMethod* mono_gc_get_managed_allocator (MonoVTable *vtable, gboolean for_box) MONO_INTERNAL;
+MonoMethod* mono_gc_get_managed_array_allocator (MonoVTable *vtable, int rank) MONO_INTERNAL;
+int mono_gc_get_managed_allocator_type (MonoMethod *managed_alloc) MONO_INTERNAL;
+MonoMethod *mono_gc_get_managed_allocator_by_type (int atype) MONO_INTERNAL;
+
+guint32 mono_gc_get_managed_allocator_types (void) MONO_INTERNAL;
+
+/* Fast write barriers */
+MonoMethod* mono_gc_get_write_barrier (void) MONO_INTERNAL;
+
+/* helper for the managed alloc support */
+MonoString *mono_string_alloc (int length) MONO_INTERNAL;
+
+/*
+ * Functions supplied by the runtime and called by the GC. Currently only used
+ * by SGEN.
+ */
+typedef struct {
+ /*
+ * Function called during thread startup/attach to allocate thread-local data
+ * needed by the other functions.
+ */
+ gpointer (*thread_attach_func) (void);
+ /* FIXME: Add a cleanup function too */
+ /*
+ * Function called from every thread when suspending for GC. It can save
+ * data needed for marking from thread stacks. user_data is the data returned
+ * by attach_func. This might called with GC locks held and the word stopped,
+ * so it shouldn't do any synchronization etc.
+ */
+ void (*thread_suspend_func) (gpointer user_data, void *sigcontext);
+ /*
+ * Function called to mark from thread stacks. user_data is the data returned
+ * by attach_func. This is called twice, with the word stopped:
+ * - in the first pass, it should mark areas of the stack using
+ * conservative marking by calling mono_gc_conservatively_scan_area ().
+ * - in the second pass, it should mark the remaining areas of the stack
+ * using precise marking by calling mono_gc_scan_object ().
+ */
+ void (*thread_mark_func) (gpointer user_data, guint8 *stack_start, guint8 *stack_end, gboolean precise);
+} MonoGCCallbacks;
+
+/* Set the callback functions callable by the GC */
+void mono_gc_set_gc_callbacks (MonoGCCallbacks *callbacks) MONO_INTERNAL;
+
+/* Functions callable from the thread mark func */
+
+/* Scan the memory area between START and END conservatively */
+void mono_gc_conservatively_scan_area (void *start, void *end) MONO_INTERNAL;
+
+/* Scan OBJ, returning its new address */
+void *mono_gc_scan_object (void *obj) MONO_INTERNAL;
+
+/* Return the bitmap encoded by a descriptor */
+gsize* mono_gc_get_bitmap_for_descr (void *descr, int *numbits) MONO_INTERNAL;
+
+/* Return the suspend signal number used by the GC to suspend threads,
+ or -1 if not applicable. */
+int mono_gc_get_suspend_signal (void) MONO_INTERNAL;
+
+#ifdef HAVE_SGEN_GC
+int mono_gc_get_los_limit (void) MONO_INTERNAL;
+#endif
+
+#endif /* __MONO_METADATA_GC_INTERNAL_H__ */