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109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
// Copyright 2019-2020, Collabora, Ltd.
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// SPDX-License-Identifier: BSL-1.0
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/*!
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* @file
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* @brief Hashset struct header.
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* @author Jakob Bornecrantz <jakob@collabora.com>
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* @ingroup aux_util
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*/
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#pragma once
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#include "xrt/xrt_compiler.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!
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* @struct u_hashset
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* @ingroup aux_util
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*
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* Kind of bespoke hashset implementation, where the user is responsible for
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* allocating and freeing the items themselves.
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*
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* This allows embedding the @ref u_hashset_item at the end of structs.
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*/
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struct u_hashset;
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/*!
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* A embeddable hashset item, note that the string directly follows the
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* @ref u_hashset_item.
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*
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* @ingroup aux_util
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*/
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struct u_hashset_item
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{
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size_t hash;
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size_t length;
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#ifdef __cplusplus
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inline const char *
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c_str()
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{
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return (const char *)&this[1];
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}
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#else
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const char c_str[];
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#endif
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};
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typedef void (*u_hashset_callback)(struct u_hashset_item *item, void *priv);
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int
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u_hashset_create(struct u_hashset **out_hashset);
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int
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u_hashset_destroy(struct u_hashset **hs);
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int
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u_hashset_find_str(struct u_hashset *hs,
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const char *str,
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size_t length,
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struct u_hashset_item **out_item);
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int
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u_hashset_find_c_str(struct u_hashset *hs,
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const char *c_str,
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struct u_hashset_item **out_item);
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int
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u_hashset_create_and_insert_str(struct u_hashset *hs,
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const char *str,
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size_t length,
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struct u_hashset_item **out_item);
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int
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u_hashset_create_and_insert_str_c(struct u_hashset *hs,
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const char *c_str,
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struct u_hashset_item **out_item);
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int
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u_hashset_insert_item(struct u_hashset *hs, struct u_hashset_item *item);
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int
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u_hashset_erase_item(struct u_hashset *hs, struct u_hashset_item *item);
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int
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u_hashset_erase_str(struct u_hashset *hs, const char *str, size_t length);
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int
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u_hashset_erase_c_str(struct u_hashset *hs, const char *c_str);
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/*!
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* First clear the hashset and then call the given callback with each item that
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* was in the hashset.
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*
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* @ingroup aux_util
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*/
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void
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u_hashset_clear_and_call_for_each(struct u_hashset *hs,
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u_hashset_callback cb,
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void *priv);
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#ifdef __cplusplus
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}
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#endif
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