libobjc/objc-private/runtime.h

/* GNU Objective C Runtime internal declarations
   Copyright (C) 1993-2025 Free Software Foundation, Inc.
   Contributed by Kresten Krab Thorup

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */

/* You need to include this file after including a number of standard ObjC files.

The original list was:

#include "objc/objc.h"
#include "objc/objc-api.h"
#include "objc/thr.h"
#include "objc/hash.h"
#include "objc/objc-list.h"

but can almost certainly be shrunk down.  */

#ifndef __objc_private_runtime_INCLUDE_GNU
#define __objc_private_runtime_INCLUDE_GNU

#include <stdarg.h>		/* for varargs and va_list's */

#include <stdio.h>
#include <ctype.h>

#include <stddef.h>		/* so no one else will get system versions */
#include <assert.h>

extern BOOL __objc_add_class_to_hash (Class);   /* (objc-class.c) */
extern void __objc_init_class_tables (void);    /* (objc-class.c) */
extern void __objc_init_dispatch_tables (void); /* (objc-dispatch.c) */
extern void __objc_install_premature_dtable (Class); /* (objc-dispatch.c) */
extern void __objc_resolve_class_links (void);  /* (objc-class.c) */
extern void __objc_update_dispatch_table_for_class (Class);/* (objc-msg.c) */

extern int  __objc_init_thread_system (void);    /* thread.c */
extern int  __objc_fini_thread_system (void);    /* thread.c */
extern BOOL __objc_init_class (Class class);  /* init.c */
extern void class_add_method_list (Class, struct objc_method_list *);

/* Registering instance methods as class methods for root classes */
extern void __objc_register_instance_methods_to_class (Class);
extern struct objc_method * search_for_method_in_list (struct objc_method_list * list, SEL op);

extern void
__objc_update_classes_with_methods (struct objc_method *method_a, struct objc_method *method_b); /* class.c */

/* Mutex locking __objc_selector_max_index and its arrays. */
extern objc_mutex_t __objc_runtime_mutex;

/* Number of threads which are alive. */
extern int __objc_runtime_threads_alive;

BOOL __objc_responds_to (id object, SEL sel); /* for internal use only! */
extern void __objc_generate_gc_type_description (Class);

#endif /* not __objc_private_runtime_INCLUDE_GNU */