681226852b
I have no idea how useful this is going to be, but I'll just commit it anyways because why the hell not.
75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
|
|
/* See the end of this file for copyright, licensing, and warranty information. */
|
|
|
|
#include <ardix/atom.h>
|
|
#include <ardix/kent.h>
|
|
#include <ardix/list.h>
|
|
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
|
|
int kent_init(struct kent *parent, struct kent *kent)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (kent->operations == NULL)
|
|
return -EFAULT;
|
|
if (kent->operations->destroy == NULL)
|
|
return -EFAULT;
|
|
|
|
atom_init(&kent->refcount);
|
|
kent_get(kent);
|
|
|
|
if (parent == NULL)
|
|
parent = kent_root;
|
|
|
|
kent_get(parent);
|
|
kent->parent = parent;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void kent_get(struct kent *kent)
|
|
{
|
|
atom_get(&kent->refcount);
|
|
}
|
|
|
|
void kent_put(struct kent *kent)
|
|
{
|
|
struct kent *parent;
|
|
|
|
while (kent != NULL) {
|
|
parent = kent->parent;
|
|
|
|
if (atom_put(&kent->refcount) != 0)
|
|
break;
|
|
|
|
kent->operations->destroy(kent);
|
|
kent = parent;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copyright (c) 2020 Felix Kopp <sandtler@sandtler.club>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification, are permitted
|
|
* provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
* conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
|
|
* conditions and the following disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
* 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
|
|
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|