1/*	$NetBSD: thread.c,v 1.1.1.1 2009/12/13 16:54:32 kardel Exp $	*/
2
3/*
4 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2000, 2001, 2003  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: thread.c,v 1.17 2007/06/19 23:47:18 tbox Exp */
21
22/*! \file */
23
24#include <config.h>
25
26#include <isc/thread.h>
27#include <isc/util.h>
28
29#ifndef THREAD_MINSTACKSIZE
30#define THREAD_MINSTACKSIZE		(64U * 1024)
31#endif
32
33isc_result_t
34isc_thread_create(isc_threadfunc_t func, isc_threadarg_t arg,
35		  isc_thread_t *thread)
36{
37	pthread_attr_t attr;
38	size_t stacksize;
39	int ret;
40
41	pthread_attr_init(&attr);
42
43#if defined(HAVE_PTHREAD_ATTR_GETSTACKSIZE) && \
44    defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE)
45	ret = pthread_attr_getstacksize(&attr, &stacksize);
46	if (ret != 0)
47		return (ISC_R_UNEXPECTED);
48
49	if (stacksize < THREAD_MINSTACKSIZE) {
50		ret = pthread_attr_setstacksize(&attr, THREAD_MINSTACKSIZE);
51		if (ret != 0)
52			return (ISC_R_UNEXPECTED);
53	}
54#endif
55
56#if defined(PTHREAD_SCOPE_SYSTEM) && defined(NEED_PTHREAD_SCOPE_SYSTEM)
57	ret = pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
58	if (ret != 0)
59		return (ISC_R_UNEXPECTED);
60#endif
61
62	ret = pthread_create(thread, &attr, func, arg);
63	if (ret != 0)
64		return (ISC_R_UNEXPECTED);
65
66	pthread_attr_destroy(&attr);
67
68	return (ISC_R_SUCCESS);
69}
70
71void
72isc_thread_setconcurrency(unsigned int level) {
73#if defined(CALL_PTHREAD_SETCONCURRENCY)
74	(void)pthread_setconcurrency(level);
75#else
76	UNUSED(level);
77#endif
78}
79