1 /* Copyright (C) 2001 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
28 notify_func_wrapper (void *arg)
30 struct sigevent *sigev = arg;
31 sigev->sigev_notify_function (sigev->sigev_value);
38 __gai_notify_only (struct sigevent *sigev, pid_t caller_pid)
42 /* Send the signal to notify about finished processing of the request. */
43 if (sigev->sigev_notify == SIGEV_THREAD)
45 /* We have to start a thread. */
47 pthread_attr_t attr, *pattr;
49 pattr = (pthread_attr_t *) sigev->sigev_notify_attributes;
52 pthread_attr_init (&attr);
53 pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
57 if (pthread_create (&tid, pattr, notify_func_wrapper, sigev) < 0)
60 else if (sigev->sigev_notify == SIGEV_SIGNAL)
61 /* We have to send a signal. */
62 if (__gai_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
72 __gai_notify (struct requestlist *req)
74 struct waitlist *waitlist;
76 /* Now also notify possibly waiting threads. */
77 waitlist = req->waiting;
78 while (waitlist != NULL)
80 struct waitlist *next = waitlist->next;
82 /* Decrement the counter. This is used in both cases. */
83 --*waitlist->counterp;
85 if (waitlist->sigevp == NULL)
86 pthread_cond_signal (waitlist->cond);
88 /* This is part of a asynchronous `getaddrinfo_a' operation. If
89 this request is the last one, send the signal. */
90 if (*waitlist->counterp == 0)
92 __gai_notify_only (waitlist->sigevp, waitlist->caller_pid);
93 /* This is tricky. See getaddrinfo_a.c for the reason why
95 free ((void *) waitlist->counterp);