1*00b67f09SDavid van Moolenbroek /* $NetBSD: refcount.c,v 1.4 2014/12/10 04:37:59 christos Exp $ */
2*00b67f09SDavid van Moolenbroek
3*00b67f09SDavid van Moolenbroek /*
4*00b67f09SDavid van Moolenbroek * Copyright (C) 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
5*00b67f09SDavid van Moolenbroek *
6*00b67f09SDavid van Moolenbroek * Permission to use, copy, modify, and/or distribute this software for any
7*00b67f09SDavid van Moolenbroek * purpose with or without fee is hereby granted, provided that the above
8*00b67f09SDavid van Moolenbroek * copyright notice and this permission notice appear in all copies.
9*00b67f09SDavid van Moolenbroek *
10*00b67f09SDavid van Moolenbroek * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
11*00b67f09SDavid van Moolenbroek * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
12*00b67f09SDavid van Moolenbroek * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
13*00b67f09SDavid van Moolenbroek * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
14*00b67f09SDavid van Moolenbroek * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
15*00b67f09SDavid van Moolenbroek * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
16*00b67f09SDavid van Moolenbroek * PERFORMANCE OF THIS SOFTWARE.
17*00b67f09SDavid van Moolenbroek */
18*00b67f09SDavid van Moolenbroek
19*00b67f09SDavid van Moolenbroek /* Id: refcount.c,v 1.5 2007/06/19 23:47:17 tbox Exp */
20*00b67f09SDavid van Moolenbroek
21*00b67f09SDavid van Moolenbroek #include <config.h>
22*00b67f09SDavid van Moolenbroek
23*00b67f09SDavid van Moolenbroek #include <stddef.h>
24*00b67f09SDavid van Moolenbroek
25*00b67f09SDavid van Moolenbroek #include <isc/mutex.h>
26*00b67f09SDavid van Moolenbroek #include <isc/refcount.h>
27*00b67f09SDavid van Moolenbroek #include <isc/result.h>
28*00b67f09SDavid van Moolenbroek
29*00b67f09SDavid van Moolenbroek isc_result_t
isc_refcount_init(isc_refcount_t * ref,unsigned int n)30*00b67f09SDavid van Moolenbroek isc_refcount_init(isc_refcount_t *ref, unsigned int n) {
31*00b67f09SDavid van Moolenbroek REQUIRE(ref != NULL);
32*00b67f09SDavid van Moolenbroek
33*00b67f09SDavid van Moolenbroek ref->refs = n;
34*00b67f09SDavid van Moolenbroek #if defined(ISC_PLATFORM_USETHREADS) && !defined(ISC_PLATFORM_HAVEXADD)
35*00b67f09SDavid van Moolenbroek return (isc_mutex_init(&ref->lock));
36*00b67f09SDavid van Moolenbroek #else
37*00b67f09SDavid van Moolenbroek return (ISC_R_SUCCESS);
38*00b67f09SDavid van Moolenbroek #endif
39*00b67f09SDavid van Moolenbroek }
40