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* 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.
This commit is contained in:
Ulrich Drepper
2001-03-03 18:21:04 +00:00
parent 28b20578c9
commit 2ace572170
28 changed files with 1465 additions and 71 deletions
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168
resolv/getaddrinfo_a.c Normal file
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/* 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 <errno.h>
#include <netdb.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include "gai_misc.h"
/* We need this special structure to handle asynchronous I/O. */
struct async_waitlist
{
int counter;
struct sigevent sigev;
struct waitlist list[0];
};
int
getaddrinfo_a (int mode, struct gaicb *list[], int ent, struct sigevent *sig)
{
struct sigevent defsigev;
struct requestlist *requests[ent];
int cnt;
volatile int total = 0;
int result = 0;
/* Check arguments. */
if (mode != GAI_WAIT && mode != GAI_NOWAIT)
{
__set_errno (EINVAL);
return EAI_SYSTEM;
}
if (sig == NULL)
{
defsigev.sigev_notify = SIGEV_NONE;
sig = &defsigev;
}
/* Request the mutex. */
pthread_mutex_lock (&__gai_requests_mutex);
/* Now we can enqueue all requests. Since we already acquired the
mutex the enqueue function need not do this. */
for (cnt = 0; cnt < ent; ++cnt)
if (list[cnt] != NULL)
{
requests[cnt] = __gai_enqueue_request (list[cnt]);
if (requests[cnt] != NULL)
/* Successfully enqueued. */
++total;
else
/* Signal that we've seen an error. `errno' and the error code
of the gaicb will tell more. */
result = EAI_SYSTEM;
}
else
requests[cnt] = NULL;
if (total == 0)
{
/* We don't have anything to do except signalling if we work
asynchronously. */
/* Release the mutex. We do this before raising a signal since the
signal handler might do a `siglongjmp' and then the mutex is
locked forever. */
pthread_mutex_unlock (&__gai_requests_mutex);
if (mode == GAI_NOWAIT)
__gai_notify_only (sig,
sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
return result;
}
else if (mode == GAI_WAIT)
{
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
struct waitlist waitlist[ent];
int oldstate;
total = 0;
for (cnt = 0; cnt < ent; ++cnt)
if (requests[cnt] != NULL)
{
waitlist[cnt].cond = &cond;
waitlist[cnt].next = requests[cnt]->waiting;
waitlist[cnt].counterp = &total;
waitlist[cnt].sigevp = NULL;
waitlist[cnt].caller_pid = 0; /* Not needed. */
requests[cnt]->waiting = &waitlist[cnt];
++total;
}
/* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancelation
points we must be careful. We added entries to the waiting lists
which we must remove. So defer cancelation for now. */
pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
while (total > 0)
pthread_cond_wait (&cond, &__gai_requests_mutex);
/* Now it's time to restore the cancelation state. */
pthread_setcancelstate (oldstate, NULL);
/* Release the conditional variable. */
if (pthread_cond_destroy (&cond) != 0)
/* This must never happen. */
abort ();
}
else
{
struct async_waitlist *waitlist;
waitlist = (struct async_waitlist *)
malloc (sizeof (struct async_waitlist)
+ (ent * sizeof (struct waitlist)));
if (waitlist == NULL)
result = EAI_AGAIN;
else
{
pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
total = 0;
for (cnt = 0; cnt < ent; ++cnt)
if (requests[cnt] != NULL)
{
waitlist->list[cnt].cond = NULL;
waitlist->list[cnt].next = requests[cnt]->waiting;
waitlist->list[cnt].counterp = &waitlist->counter;
waitlist->list[cnt].sigevp = &waitlist->sigev;
waitlist->list[cnt].caller_pid = caller_pid;
requests[cnt]->waiting = &waitlist->list[cnt];
++total;
}
waitlist->counter = total;
waitlist->sigev = *sig;
}
}
/* Release the mutex. */
pthread_mutex_unlock (&__gai_requests_mutex);
return result;
}