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author | Ulrich Drepper <drepper@redhat.com> | 2001-03-03 18:21:04 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2001-03-03 18:21:04 +0000 |
commit | 2ace57217028da99fc98f79ae0a625a1ec842724 (patch) | |
tree | e7d7c34d61fae3e134dcb1029dfd901cae2c2ddc /resolv/gai_notify.c | |
parent | 28b20578c97c8d53cc339446fdab31818cf701f6 (diff) | |
download | glibc-2ace57217028da99fc98f79ae0a625a1ec842724.tar.gz glibc-2ace57217028da99fc98f79ae0a625a1ec842724.tar.xz glibc-2ace57217028da99fc98f79ae0a625a1ec842724.zip |
Update.
* Versions.def: Add libanl definition. * shlig-versions: Add entry for libanl. * resolv/Makefile (distribute): Add gai_misc.h and ga_test.c. (routines): Add gai_sigqueue. (extra-libs): Add libanl. (libanl-routines): New variable. Add rules to build libanl and ga_test. * resolv/Versions [libc] (GLIBC_2.2.3): Add __gai_sigqueue. [libanl]: New library. * resolv/netdb.h: Add definitions for libanl. * resolv/getaddrinfo_a.c: New file. * resolv/gai_cancel.c: New file. * resolv/gai_error.c: New file. * resolv/gai_misc.c: New file. * resolv/gai_misc.h: New file. * resolv/gai_notify.c: New file. * resolv/gai_suspend.c: New file. * resolv/ga_test.c: New file. * sysdeps/generic/gai_sigqueue.c: New file. * sysdeps/unix/sysv/linux/gai_sigqueue.c: New file. * sysdeps/generic/bits/siginfo.h: Allow __need_sigevent_t being defined and provide only that definition. * sysdeps/unix/sysv/linux/alpha/bits/siginfo.h: Likewise. * sysdeps/unix/sysv/linux/bits/siginfo.h: Likewise. * sysdeps/unix/sysv/linux/ia64/bits/siginfo.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/siginfo.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/siginfo.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/siginfo.h: Likewise. * rt/aio_misc.c: Fix typos in comments. * rt/lio_listio.c: Pretty printing. Little optimization in request list handling. * elf/rtld.c: Remove commented out code.
Diffstat (limited to 'resolv/gai_notify.c')
-rw-r--r-- | resolv/gai_notify.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/resolv/gai_notify.c b/resolv/gai_notify.c new file mode 100644 index 0000000000..b3e623a2af --- /dev/null +++ b/resolv/gai_notify.c @@ -0,0 +1,100 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <netdb.h> +#include <pthread.h> +#include <stdlib.h> + +#include "gai_misc.h" + + +static void * +notify_func_wrapper (void *arg) +{ + struct sigevent *sigev = arg; + sigev->sigev_notify_function (sigev->sigev_value); + return NULL; +} + + +int +internal_function +__gai_notify_only (struct sigevent *sigev, pid_t caller_pid) +{ + int result = 0; + + /* Send the signal to notify about finished processing of the request. */ + if (sigev->sigev_notify == SIGEV_THREAD) + { + /* We have to start a thread. */ + pthread_t tid; + pthread_attr_t attr, *pattr; + + pattr = (pthread_attr_t *) sigev->sigev_notify_attributes; + if (pattr == NULL) + { + pthread_attr_init (&attr); + pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); + pattr = &attr; + } + + if (pthread_create (&tid, pattr, notify_func_wrapper, sigev) < 0) + result = -1; + } + else if (sigev->sigev_notify == SIGEV_SIGNAL) + /* We have to send a signal. */ + if (__gai_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid) + < 0) + result = -1; + + return result; +} + + +void +internal_function +__gai_notify (struct requestlist *req) +{ + struct waitlist *waitlist; + + /* Now also notify possibly waiting threads. */ + waitlist = req->waiting; + while (waitlist != NULL) + { + struct waitlist *next = waitlist->next; + + /* Decrement the counter. This is used in both cases. */ + --*waitlist->counterp; + + if (waitlist->sigevp == NULL) + pthread_cond_signal (waitlist->cond); + else + /* This is part of a asynchronous `getaddrinfo_a' operation. If + this request is the last one, send the signal. */ + if (*waitlist->counterp == 0) + { + __gai_notify_only (waitlist->sigevp, waitlist->caller_pid); + /* This is tricky. See getaddrinfo_a.c for the reason why + this works. */ + free ((void *) waitlist->counterp); + } + + waitlist = next; + } +} |