project_files/frontlib/util/refcounter.h
author Medo <smaxein@googlemail.com>
Wed, 27 Jun 2012 22:52:19 +0200
changeset 7314 6171f0bad318
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permissions -rw-r--r--
frontlib: Fixes and improvements. Added a GPLv2+ license header to all frontlib files that did not have their license fixed already.
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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 */
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/**
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 * Helper functions for reference counted structs.
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 *
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 * We don't have enough of them to justify going crazy with macros, but I still prefer
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 * to have the logic in one place.
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 *
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 * In particular, these functions handle counter overflow in a sensible way
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 * (log and leak).
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 */
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#ifndef REFCOUNTER_H_
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#define REFCOUNTER_H_
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#include <stdbool.h>
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/**
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 * Pass a pointer to the counter variable to be incremented, and the name of the
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 * object for logging purposes. On overflow an error will be logged and the
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 * counter will get "stuck" so neither retain nor release will modify it anymore.
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 */
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void flib_retain(int *referenceCountPtr, const char *objName);
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/**
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 * Pass a pointer to the counter variable to be decremented and the name
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 * of the object for logging purposes.
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 * Returns true if the object should be freed.
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 */
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bool flib_release(int *referenceCountPtr, const char *objName);
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#endif /* REFCOUNTER_H_ */