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/* Yash: yet another shell */
/* refcount.h: reference counter utility */
/* (C) 2015 magicant */
/* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef YASH_REFCOUNT_H
#define YASH_REFCOUNT_H
#include <stdint.h>
#include "util.h"
#ifdef UINTPTR_MAX
typedef uintptr_t refcount_T;
#else
typedef uintmax_t refcount_T;
#endif
static inline void refcount_increment(refcount_T *r)
__attribute__((nonnull));
static inline _Bool refcount_decrement(refcount_T *r)
__attribute__((nonnull));
void refcount_increment(refcount_T *rc)
{
(*rc)++;
if (*rc == 0)
alloc_failed();
}
_Bool refcount_decrement(refcount_T *rc)
{
(*rc)--;
return *rc == 0;
}
#endif /* YASH_REFCOUNT_H */
/* vim: set ts=8 sts=4 sw=4 et tw=80: */
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