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