#ifndef RBIMPL_GC_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_GC_H
/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Registering values to the GC.
*/
#include "ruby/internal/dllexport.h"
#include "ruby/internal/value.h"
RBIMPL_SYMBOL_EXPORT_BEGIN()
/**
* Inform the garbage collector that the global or static variable pointed by
* `valptr` stores a live Ruby object that should not be moved. Note that
* extensions should use this API on global constants instead of assuming
* constants defined in Ruby are always alive. Ruby code can remove global
* constants.
*
* Because this registration itself has a possibility to trigger a GC, this
* function must be called before any GC-able objects is assigned to the
* address pointed by `valptr`.
*/
void rb_gc_register_address(VALUE *valptr);
/**
* An alias for `rb_gc_register_address()`.
*/
void rb_global_variable(VALUE *);
/**
* Inform the garbage collector that a pointer previously passed to
* `rb_gc_register_address()` no longer points to a live Ruby object.
*/
void rb_gc_unregister_address(VALUE *valptr);
/**
* Inform the garbage collector that `object` is a live Ruby object that should
* not be moved.
*
* See also: rb_gc_register_address()
*/
void rb_gc_register_mark_object(VALUE object);
RBIMPL_SYMBOL_EXPORT_END()
#endif /* RBIMPL_GC_H */
