thr_attr_setguardsize.c revision 103388
1169689Skan/* 2169689Skan * Copyright (C) 2001 Jason Evans <jasone@freebsd.org>. 3169689Skan * All rights reserved. 4169689Skan * 5169689Skan * Redistribution and use in source and binary forms, with or without 6169689Skan * modification, are permitted provided that the following conditions 7169689Skan * are met: 8169689Skan * 1. Redistributions of source code must retain the above copyright 9169689Skan * notice(s), this list of conditions and the following disclaimer 10169689Skan * unmodified other than the allowable addition of one or more 11169689Skan * copyright notices. 12169689Skan * 2. Redistributions in binary form must reproduce the above copyright 13169689Skan * notice(s), this list of conditions and the following disclaimer in 14169689Skan * the documentation and/or other materials provided with the 15169689Skan * distribution. 16169689Skan * 17169689Skan * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 18169689Skan * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19169689Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20169689Skan * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE 21169689Skan * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22169689Skan * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23169689Skan * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24169689Skan * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25169689Skan * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26169689Skan * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 27169689Skan * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28169689Skan * 29 * $FreeBSD: head/lib/libkse/thread/thr_attr_setguardsize.c 103388 2002-09-16 08:45:36Z mini $ 30 */ 31 32#include <sys/param.h> 33#include <errno.h> 34#include <pthread.h> 35#include "thr_private.h" 36 37__weak_reference(_pthread_attr_setguardsize, pthread_attr_setguardsize); 38 39int 40_pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize) 41{ 42 int ret; 43 44 /* Check for invalid arguments. */ 45 if (attr == NULL || *attr == NULL) 46 ret = EINVAL; 47 else { 48 /* 49 * Round guardsize up to the nearest multiple of 50 * _pthread_page_size. 51 */ 52 if (guardsize % _pthread_page_size != 0) 53 guardsize = ((guardsize / _pthread_page_size) + 1) * 54 _pthread_page_size; 55 56 /* Save the stack size. */ 57 (*attr)->guardsize_attr = guardsize; 58 ret = 0; 59 } 60 return(ret); 61} 62