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69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
/* See the end of this file for copyright, license, and warranty information. */
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#include <ardix/atom.h>
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#include <ardix/malloc.h>
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#include <ardix/kent.h>
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#include <ardix/list.h>
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#include <errno.h>
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#include <stddef.h>
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struct kent _kent_root;
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struct kent *kent_root = NULL;
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int kent_root_init(void)
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{
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if (kent_root != NULL)
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return -EEXIST;
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kent_root = &_kent_root;
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kent_root->parent = NULL;
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kent_root->destroy = NULL;
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atom_init(&kent_root->refcount);
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kent_get(kent_root);
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return 0;
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}
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int kent_init(struct kent *kent)
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{
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if (kent->parent == NULL || kent->destroy == NULL)
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return -EFAULT;
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kent_get(kent->parent);
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atom_init(&kent->refcount);
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kent_get(kent);
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return 0;
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}
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void kent_get(struct kent *kent)
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{
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atom_get(&kent->refcount);
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}
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void kent_put(struct kent *kent)
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{
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struct kent *parent = kent->parent;
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if (atom_put(&kent->refcount) == 0) {
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kent->destroy(kent);
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if (parent != NULL)
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kent_put(parent);
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}
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}
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/*
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* This file is part of Ardix.
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* Copyright (c) 2020, 2021 Felix Kopp <owo@fef.moe>.
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*
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* Ardix is non-violent software: you may only use, redistribute,
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* and/or modify it under the terms of the CNPLv6+ as found in
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* the LICENSE file in the source code root directory or at
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* <https://git.pixie.town/thufie/CNPL>.
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*
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* Ardix comes with ABSOLUTELY NO WARRANTY, to the extent
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* permitted by applicable law. See the CNPLv6+ for details.
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*/
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