thr_attr_setguardsize.c revision 96501
1/* 2 * Copyright (C) 2001 Jason Evans <jasone@freebsd.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice(s), this list of conditions and the following disclaimer 10 * unmodified other than the allowable addition of one or more 11 * copyright notices. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice(s), this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE 21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 27 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD: head/lib/libkse/thread/thr_attr_setguardsize.c 96501 2002-05-13 07:58:15Z alfred $ 30 */ 31 32#include <sys/param.h> 33#include <errno.h> 34#include <pthread.h> 35#include "pthread_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