1/*
2 * pthread_kill.c
3 *
4 * Description:
5 * This translation unit implements the pthread_kill routine.
6 *
7 * --------------------------------------------------------------------------
8 *
9 *      Pthreads-win32 - POSIX Threads Library for Win32
10 *      Copyright(C) 1998 John E. Bossom
11 *      Copyright(C) 1999,2005 Pthreads-win32 contributors
12 *
13 *      Contact Email: rpj@callisto.canberra.edu.au
14 *
15 *      The current list of contributors is contained
16 *      in the file CONTRIBUTORS included with the source
17 *      code distribution. The list can also be seen at the
18 *      following World Wide Web location:
19 *      http://sources.redhat.com/pthreads-win32/contributors.html
20 *
21 *      This library is free software; you can redistribute it and/or
22 *      modify it under the terms of the GNU Lesser General Public
23 *      License as published by the Free Software Foundation; either
24 *      version 2 of the License, or (at your option) any later version.
25 *
26 *      This library is distributed in the hope that it will be useful,
27 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
28 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
29 *      Lesser General Public License for more details.
30 *
31 *      You should have received a copy of the GNU Lesser General Public
32 *      License along with this library in the file COPYING.LIB;
33 *      if not, write to the Free Software Foundation, Inc.,
34 *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
35 */
36
37#include "pthread.h"
38#include "implement.h"
39
40/*
41 * Not needed yet, but defining it should indicate clashes with build target
42 * environment that should be fixed.
43 */
44#if !defined(WINCE)
45#  include <signal.h>
46#endif
47
48int
49pthread_kill (pthread_t thread, int sig)
50     /*
51      * ------------------------------------------------------
52      * DOCPUBLIC
53      *      This function requests that a signal be delivered to the
54      *      specified thread. If sig is zero, error checking is
55      *      performed but no signal is actually sent such that this
56      *      function can be used to check for a valid thread ID.
57      *
58      * PARAMETERS
59      *      thread  reference to an instances of pthread_t
60      *      sig     signal. Currently only a value of 0 is supported.
61      *
62      *
63      * DESCRIPTION
64      *      This function requests that a signal be delivered to the
65      *      specified thread. If sig is zero, error checking is
66      *      performed but no signal is actually sent such that this
67      *      function can be used to check for a valid thread ID.
68      *
69      * RESULTS
70      *              ESRCH           the thread is not a valid thread ID,
71      *              EINVAL          the value of the signal is invalid
72      *                              or unsupported.
73      *              0               the signal was successfully sent.
74      *
75      * ------------------------------------------------------
76      */
77{
78  int result = 0;
79  ptw32_thread_t * tp;
80  ptw32_mcs_local_node_t node;
81
82  ptw32_mcs_lock_acquire(&ptw32_thread_reuse_lock, &node);
83
84  tp = (ptw32_thread_t *) thread.p;
85
86  if (NULL == tp
87      || thread.x != tp->ptHandle.x
88      || NULL == tp->threadH)
89    {
90      result = ESRCH;
91    }
92
93  ptw32_mcs_lock_release(&node);
94
95  if (0 == result && 0 != sig)
96    {
97      /*
98       * Currently does not support any signals.
99       */
100      result = EINVAL;
101    }
102
103  return result;
104
105}				/* pthread_kill */
106