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/*
* Copyright (c) 2015-2016 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of the Red Hat, Inc. 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 OWNER 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.
*/
#include <sys/types.h>
#include <arpa/inet.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include "pr-poll-array.h"
void
pr_poll_array_init(struct pr_poll_array *poll_array, size_t user_data_size)
{
memset(poll_array, 0, sizeof(*poll_array));
poll_array->user_data_size = user_data_size;
}
void
pr_poll_array_destroy(struct pr_poll_array *poll_array)
{
free(poll_array->array);
free(poll_array->user_data_array);
pr_poll_array_init(poll_array, poll_array->user_data_size);
}
void
pr_poll_array_clean(struct pr_poll_array *poll_array)
{
poll_array->items = 0;
}
static int
pr_poll_array_realloc(struct pr_poll_array *poll_array,
ssize_t new_array_size)
{
PRPollDesc *new_array;
char *new_user_data_array;
new_array = realloc(poll_array->array,
sizeof(PRPollDesc) * new_array_size);
if (new_array == NULL) {
return (-1);
}
poll_array->allocated = new_array_size;
poll_array->array = new_array;
if (poll_array->user_data_size > 0) {
new_user_data_array = realloc(poll_array->user_data_array,
poll_array->user_data_size * new_array_size);
if (new_user_data_array == NULL) {
return (-1);
}
poll_array->user_data_array = new_user_data_array;
}
return (0);
}
ssize_t
pr_poll_array_size(struct pr_poll_array *poll_array)
{
return (poll_array->items);
}
ssize_t
pr_poll_array_add(struct pr_poll_array *poll_array, PRPollDesc **pfds, void **user_data)
{
if (pr_poll_array_size(poll_array) >= poll_array->allocated) {
if (pr_poll_array_realloc(poll_array, (poll_array->allocated * 2) + 1)) {
return (-1);
}
}
*pfds = &poll_array->array[pr_poll_array_size(poll_array)];
memset(*pfds, 0, sizeof(**pfds));
*user_data = poll_array->user_data_array + (poll_array->items * poll_array->user_data_size);
memset(*user_data, 0, poll_array->user_data_size);
poll_array->items++;
return (poll_array->items - 1);
}
void
pr_poll_array_gc(struct pr_poll_array *poll_array)
{
if (poll_array->allocated > (pr_poll_array_size(poll_array) * 3) + 1) {
pr_poll_array_realloc(poll_array, (pr_poll_array_size(poll_array) * 2) + 1);
}
}
PRPollDesc *
pr_poll_array_get(const struct pr_poll_array *poll_array, ssize_t pos)
{
if (pos >= poll_array->items) {
return (NULL);
}
return (&poll_array->array[pos]);
}
void *
pr_poll_array_get_user_data(const struct pr_poll_array *poll_array, ssize_t pos)
{
if (pos >= poll_array->items) {
return (NULL);
}
return (poll_array->user_data_array + (pos * poll_array->user_data_size));
}
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