Cleanup the TLS implementation:
[dragonfly.git] / lib / libthread_xu / thread / thr_kill.c
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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: src/lib/libpthread/thread/thr_kill.c,v 1.16 2003/06/28 09:55:02 davidxu Exp $
9e2ee207 33 * $DragonFly: src/lib/libthread_xu/thread/thr_kill.c,v 1.2 2005/03/29 19:26:20 joerg Exp $
71b3fa15 34 */
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JS
35
36#include <machine/tls.h>
37
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38#include <errno.h>
39#include <signal.h>
40#include <pthread.h>
41#include "thr_private.h"
42
43__weak_reference(_pthread_kill, pthread_kill);
44
45int
46_pthread_kill(pthread_t pthread, int sig)
47{
9e2ee207 48 struct pthread *curthread = tls_get_curthread();
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49 int ret;
50
51 /* Check for invalid signal numbers: */
52 if (sig < 0 || sig > _SIG_MAXSIG)
53 /* Invalid signal: */
54 ret = EINVAL;
55 /*
56 * Ensure the thread is in the list of active threads, and the
57 * signal is valid (signal 0 specifies error checking only) and
58 * not being ignored:
59 */
60 else if ((ret = _thr_ref_add(curthread, pthread, /*include dead*/0))
61 == 0) {
62 if (sig > 0)
63 _thr_send_sig(pthread, sig);
64 _thr_ref_delete(curthread, pthread);
65 }
66
67 /* Return the completion status: */
68 return (ret);
69}