aboutsummaryrefslogtreecommitdiff
path: root/resolv/gai_misc.h
diff options
context:
space:
mode:
Diffstat (limited to 'resolv/gai_misc.h')
-rw-r--r--resolv/gai_misc.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/resolv/gai_misc.h b/resolv/gai_misc.h
new file mode 100644
index 0000000000..a37264e80b
--- /dev/null
+++ b/resolv/gai_misc.h
@@ -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. */
+
+#ifndef _GAI_MISC_H
+#define _GAI_MISC_H 1
+
+#include <netdb.h>
+#include <signal.h>
+
+
+/* Used to synchronize. */
+struct waitlist
+ {
+ struct waitlist *next;
+
+ pthread_cond_t *cond;
+ 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 */