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author | Rodney W. Grimes <rgrimes@FreeBSD.org> | 1994-05-27 05:00:24 +0000 |
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committer | Rodney W. Grimes <rgrimes@FreeBSD.org> | 1994-05-27 05:00:24 +0000 |
commit | 58f0484fa251c266ede97b591b499fe3dd4f578e (patch) | |
tree | 41932a7161f4cd72005330a9c69747e7bab2ee5b /lib/libc/gen/alarm.3 | |
parent | fb49e767ba942f74b1cee8814e085e5f2615ac53 (diff) | |
download | src-58f0484fa251c266ede97b591b499fe3dd4f578e.tar.gz src-58f0484fa251c266ede97b591b499fe3dd4f578e.zip |
BSD 4.4 Lite Lib Sources
Notes
Notes:
svn path=/cvs2svn/branches/unlabeled-1.1.1/; revision=1573
Diffstat (limited to 'lib/libc/gen/alarm.3')
-rw-r--r-- | lib/libc/gen/alarm.3 | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/libc/gen/alarm.3 b/lib/libc/gen/alarm.3 new file mode 100644 index 000000000000..fb1893fda3e2 --- /dev/null +++ b/lib/libc/gen/alarm.3 @@ -0,0 +1,86 @@ +.\" Copyright (c) 1980, 1991, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)alarm.3 8.2 (Berkeley) 4/19/94 +.\" +.Dd April 19, 1994 +.Dt ALARM 3 +.Os BSD 4 +.Sh NAME +.Nm alarm +.Nd set signal timer alarm +.Sh SYNOPSIS +.Fd #include <unistd.h> +.Ft u_int +.Fn alarm "u_int seconds" +.Sh DESCRIPTION +.Bf -symbolic +This interface is made obsolete by setitimer(2). +.Ef +.Pp +The +.Fn alarm +function +waits a count of +.Ar seconds +before asserting the terminating signal +.Dv SIGALRM . +When the signal has successfully been caught, +.Fn alarm +returns the amount of time left on the clock. +The maximum number of +.Ar seconds +allowed +is 2147483647. +.Pp +If an alarm has been set with +.Fn alarm , +another call to +.Fn alarm +will supersede the prior call. +The request +.Fn alarm "0" +voids the current +alarm. +.Sh SEE ALSO +.Xr sigaction 2 , +.Xr setitimer 2 , +.Xr sigpause 2 , +.Xr sigvec 2 , +.Xr signal 3 , +.Xr sleep 3 , +.Xr ualarm 3 , +.Xr usleep 3 +.Sh HISTORY +An +.Fn alarm +function appeared in +.At v7 . |