.\" $Id$ .\" .\" Copyright 1998 by the Massachusetts Institute of Technology. .\" .\" Permission to use, copy, modify, and distribute this .\" software and its documentation for any purpose and without .\" fee is hereby granted, provided that the above copyright .\" notice appear in all copies and that both that copyright .\" notice and this permission notice appear in supporting .\" documentation, and that the name of M.I.T. not be used in .\" advertising or publicity pertaining to distribution of the .\" software without specific, written prior permission. .\" M.I.T. makes no representations about the suitability of .\" this software for any purpose. It is provided "as is" .\" without express or implied warranty. .\" .TH ARES_TIMEOUT 3 "25 July 1998" .SH NAME ares_fds \- Get file descriptors to select on for name service .SH SYNOPSIS .nf .B #include <ares.h> .PP .B struct timeval *ares_timeout(ares_channel \fIchannel\fP, .B struct timeval *\fImaxtv\fP, struct timeval *\fItvbuf\fP) .fi .SH DESCRIPTION The .B ares_timeout function determines the maximum time for which the caller should wait before invoking .BR ares_process (3) to process timeouts. The parameter .I maxtv specifies a existing maximum timeout, or .B NULL if the caller does not wish to apply a maximum timeout. The parameter .I tvbuf must point to a writable buffer of type .BR "struct timeval" . It is valid for .I maxtv and .I tvbuf to have the same value. .PP If no queries have timeouts pending sooner than the given maximum timeout, .B ares_timeout returns the value of .IR maxtv; otherwise .B ares_timeout stores the appropriate timeout value into the buffer pointed to by .I tvbuf and returns the value of .IR tvbuf . .SH SEE ALSO .BR ares_fds (3), .BR ares_process (3) .SH AUTHOR Greg Hudson, MIT Information Systems .br Copyright 1998 by the Massachusetts Institute of Technology.