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#ifndef RUBY_VM_H /*-*-C++-*-vi:se ft=cpp:*/
#define RUBY_VM_H 1
/**
* @file
* @author $Author$
* @date Sat May 31 15:17:36 2008
* @copyright Copyright (C) 2008 Yukihiro Matsumoto
* @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.
*
* We planned to have multiple VMs run side-by-side. The API here was a
* preparation of that feature. The topic branch was eventually abandoned, and
* we now have Ractor. This file is kind of obsolescent.
*/
#include "ruby/internal/dllexport.h"
RBIMPL_SYMBOL_EXPORT_BEGIN()
/**
* The opaque struct to hold VM internals. Its fields are intentionally hidden
* from extension libraries because it changes drastically time to time.
*/
typedef struct rb_vm_struct ruby_vm_t;
/**
* Destructs the passed VM. You don't have to call this API directly now,
* because there is no way to create one. There is only one VM at one time.
* ruby_stop() should just suffice.
*/
int ruby_vm_destruct(ruby_vm_t *vm);
/**
* ruby_vm_at_exit registers a function _func_ to be invoked when a VM
* passed away. Functions registered this way runs in reverse order
* of registration, just like END {} block does. The difference is
* its timing to be triggered. ruby_vm_at_exit functions runs when a
* VM _passed_ _away_, while END {} blocks runs just _before_ a VM
* _is_ _passing_ _away_.
*
* You cannot register a function to another VM than where you are in.
* So where to register is intuitive, omitted. OTOH the argument
* _func_ cannot know which VM it is in because at the time of
* invocation, the VM has already died and there is no execution
* context. The VM itself is passed as the first argument to it.
*
* @param[in] func the function to register.
*/
void ruby_vm_at_exit(void(*func)(ruby_vm_t *));
RBIMPL_SYMBOL_EXPORT_END()
#endif /* RUBY_VM_H */