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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_runtime_h__
#define INCLUDE_runtime_h__
#include "git2_util.h"
typedef int (*git_runtime_init_fn)(void);
typedef void (*git_runtime_shutdown_fn)(void);
/**
* Start up a new runtime. If this is the first time that this
* function is called within the context of the current library
* or executable, then the given `init_fns` will be invoked. If
* it is not the first time, they will be ignored.
*
* The given initialization functions _may_ register shutdown
* handlers using `git_runtime_shutdown_register` to be notified
* when the runtime is shutdown.
*
* @param init_fns The list of initialization functions to call
* @param cnt The number of init_fns
* @return The number of initializations performed (including this one) or an error
*/
int git_runtime_init(git_runtime_init_fn init_fns[], size_t cnt);
/*
* Returns the number of initializations active (the number of calls to
* `git_runtime_init` minus the number of calls sto `git_runtime_shutdown`).
* If 0, the runtime is not currently initialized.
*
* @return The number of initializations performed or an error
*/
int git_runtime_init_count(void);
/**
* Shut down the runtime. If this is the last shutdown call,
* such that there are no remaining `init` calls, then any
* shutdown hooks that have been registered will be invoked.
*
* The number of outstanding initializations will be returned.
* If this number is 0, then the runtime is shutdown.
*
* @return The number of outstanding initializations (after this one) or an error
*/
int git_runtime_shutdown(void);
/**
* Register a shutdown handler for this runtime. This should be done
* by a function invoked by `git_runtime_init` to ensure that the
* appropriate locks are taken.
*
* @param callback The shutdown handler callback
* @return 0 or an error code
*/
int git_runtime_shutdown_register(git_runtime_shutdown_fn callback);
#endif
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