thr_kill.c revision 156611
1/* 2 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by John Birrell. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: head/lib/libkse/thread/thr_kill.c 156611 2006-03-13 00:59:51Z deischen $ 33 */ 34#include <errno.h> 35#include <signal.h> 36#include <pthread.h> 37#include "thr_private.h" 38 39LT10_COMPAT_PRIVATE(_pthread_kill); 40LT10_COMPAT_DEFAULT(pthread_kill); 41 42__weak_reference(_pthread_kill, pthread_kill); 43 44int 45_pthread_kill(pthread_t pthread, int sig) 46{ 47 struct pthread *curthread = _get_curthread(); 48 int ret; 49 50 /* Check for invalid signal numbers: */ 51 if (sig < 0 || sig > _SIG_MAXSIG) 52 /* Invalid signal: */ 53 ret = EINVAL; 54 /* 55 * Ensure the thread is in the list of active threads, and the 56 * signal is valid (signal 0 specifies error checking only) and 57 * not being ignored: 58 */ 59 else if ((ret = _thr_ref_add(curthread, pthread, /*include dead*/0)) 60 == 0) { 61 if ((sig > 0) && 62 (_thread_sigact[sig - 1].sa_handler != SIG_IGN)) 63 _thr_sig_send(pthread, sig); 64 _thr_ref_delete(curthread, pthread); 65 } 66 67 /* Return the completion status: */ 68 return (ret); 69} 70