glibc/resolv/gai_misc.h
Ulrich Drepper f1762c0c4b [BZ #2978]
2006-08-03  Ulrich Drepper  <drepper@redhat.com>
	* rt/Makefile (tests): Add tst-clock2.
	* rt/tst-clock2.c: New file.

	[BZ #2978]
	* resolv/gai_notify.c (__gai_notify_only): Copy memory for thread
	function and its parameters and pass it to new thread.
	(__gai_notify): Add support for alternative waiting for completion.
	* resolv/gai_suspend.c (gai_suspend): Add support for alternative
	waiting for completion.
	* resolv/getaddrinfo_a.c: Likewise.
	* resolv/gai_misc.h (struct waitlist): Don't add cond if alternative
	waiting for completion is used.
	* resolv/gai_misc.c: Allow overwriting code to start helper thread.
	* resolv/gai_cancel.c: Include <gai_misc.h> not "gai_misc.h".
	* resolv/gai_error.c: Likewise.
	* resolv/gai_sigqueue.c: Likewise.

	* hurd/getdport.c (__detdport): Don't return EBADF; instead set
	errno to EBADF and return MACH_PORT_NULL.
	* posix/Makefile (CFLAGS-waitid.c): Add -fasynchronous-unwind-tables.
2006-08-03 08:17:20 +00:00

103 lines
3.0 KiB
C

/* Copyright (C) 2001, 2006 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _GAI_MISC_H
#define _GAI_MISC_H 1
#include <netdb.h>
#include <signal.h>
/* Used to synchronize. */
struct waitlist
{
struct waitlist *next;
#ifndef DONT_NEED_GAI_MISC_COND
pthread_cond_t *cond;
#endif
volatile int *counterp;
/* The next field is used in asynchronous `lio_listio' operations. */
struct sigevent *sigevp;
/* XXX See requestlist, it's used to work around the broken signal
handling in Linux. */
pid_t caller_pid;
};
/* Used to queue requests.. */
struct requestlist
{
int running;
struct requestlist *next;
/* Pointer to the actual data. */
struct gaicb *gaicbp;
/* List of waiting processes. */
struct waitlist *waiting;
};
/* To customize the implementation one can use the following struct.
This implementation follows the one in Irix. */
struct gaiinit
{
int gai_threads; /* Maximal number of threads. */
int gai_num; /* Number of expected simultanious requests. */
int gai_locks; /* Not used. */
int gai_usedba; /* Not used. */
int gai_debug; /* Not used. */
int gai_numusers; /* Not used. */
int gai_idle_time; /* Number of seconds before idle thread
terminates. */
int gai_reserved;
};
/* Lock for global I/O list of requests. */
extern pthread_mutex_t __gai_requests_mutex;
/* Enqueue request. */
extern struct requestlist *__gai_enqueue_request (struct gaicb *gaicbp)
internal_function;
/* Find request on wait list. */
extern struct requestlist *__gai_find_request (const struct gaicb *gaicbp)
internal_function;
/* Remove request from waitlist. */
extern int __gai_remove_request (struct gaicb *gaicbp)
internal_function;
/* Notify initiator of request and tell this everybody listening. */
extern void __gai_notify (struct requestlist *req)
internal_function;
/* Notify initiator of request. */
extern int __gai_notify_only (struct sigevent *sigev, pid_t caller_pid)
internal_function;
/* Send the signal. */
extern int __gai_sigqueue (int sig, const union sigval val, pid_t caller_pid)
internal_function;
#endif /* gai_misc.h */