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/*
* twemproxy - A fast and lightweight proxy for memcached protocol.
* Copyright (C) 2011 Twitter, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _NC_ARRAY_H_
#define _NC_ARRAY_H_
#include <nc_core.h>
typedef int (*array_compare_t)(const void *, const void *);
typedef rstatus_t (*array_each_t)(void *, void *);
struct array {
uint32_t nelem; /* # element */
void *elem; /* element */
size_t size; /* element size */
uint32_t nalloc; /* # allocated element */
};
#define null_array { 0, NULL, 0, 0 }
static inline void
array_null(struct array *a)
{
a->nelem = 0;
a->elem = NULL;
a->size = 0;
a->nalloc = 0;
}
static inline void
array_set(struct array *a, void *elem, size_t size, uint32_t nalloc)
{
a->nelem = 0;
a->elem = elem;
a->size = size;
a->nalloc = nalloc;
}
static inline uint32_t
array_n(const struct array *a)
{
return a->nelem;
}
struct array *array_create(uint32_t n, size_t size);
void array_destroy(struct array *a);
rstatus_t array_init(struct array *a, uint32_t n, size_t size);
void array_deinit(struct array *a);
uint32_t array_idx(const struct array *a, const void *elem);
void *array_push(struct array *a);
void *array_pop(struct array *a);
void *array_get(const struct array *a, uint32_t idx);
void *array_top(const struct array *a);
void array_swap(struct array *a, struct array *b);
void array_sort(struct array *a, array_compare_t compare);
rstatus_t array_each(const struct array *a, array_each_t func, void *data);
#endif
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