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/* tube.c - tubes implementation */
/* Copyright (C) 2008 Keith Rarick and Philotic Inc.
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include "stat.h"
#include "tube.h"
#include "prot.h"
#include "util.h"
tube
make_tube(const char *name)
{
tube t;
t = malloc(sizeof(struct tube));
if (!t) return NULL;
t->refs = 0;
t->name[MAX_TUBE_NAME_LEN - 1] = '\0';
strncpy(t->name, name, MAX_TUBE_NAME_LEN - 1);
if (t->name[MAX_TUBE_NAME_LEN - 1] != '\0') twarnx("truncating tube name");
pq_init(&t->ready, job_pri_cmp);
pq_init(&t->delay, job_delay_cmp);
t->buried = (struct job) { &t->buried, &t->buried, 0 };
ms_init(&t->waiting, NULL, NULL);
t->stat = (struct stats) {0, 0, 0, 0};
t->using_ct = t->watching_ct = 0;
return t;
}
static void
tube_free(tube t)
{
prot_remove_tube(t);
pq_clear(&t->ready);
ms_clear(&t->waiting);
free(t);
}
void
tube_dref(tube t)
{
if (!t) return;
if (t->refs < 1) return twarnx("refs is zero for tube: %s", t->name);
--t->refs;
if (t->refs < 1) tube_free(t);
}
void
tube_iref(tube t)
{
if (!t) return;
++t->refs;
}
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