2 .\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for
3 .\" permission to reproduce portions of its copyrighted documentation.
4 .\" Original documentation from The Open Group can be obtained online at
5 .\" http://www.opengroup.org/bookstore/.
7 .\" The Institute of Electrical and Electronics Engineers and The Open
8 .\" Group, have given us permission to reprint portions of their
11 .\" In the following statement, the phrase ``this text'' refers to portions
12 .\" of the system documentation.
14 .\" Portions of this text are reprinted and reproduced in electronic form
15 .\" in the SunOS Reference Manual, from IEEE Std 1003.1, 2004 Edition,
16 .\" Standard for Information Technology -- Portable Operating System
17 .\" Interface (POSIX), The Open Group Base Specifications Issue 6,
18 .\" Copyright (C) 2001-2004 by the Institute of Electrical and Electronics
19 .\" Engineers, Inc and The Open Group. In the event of any discrepancy
20 .\" between these versions and the original IEEE and The Open Group
21 .\" Standard, the original IEEE and The Open Group Standard is the referee
22 .\" document. The original Standard can be obtained online at
23 .\" http://www.opengroup.org/unix/online.html.
25 .\" This notice shall appear on any product containing this material.
27 .\" The Berkeley software License Agreement specifies the terms and conditions
28 .\" for redistribution.
31 .\" Copyright (c) 1980 Regents of the University of California.
32 .\" All rights reserved.
33 .\" Portions Copyright (c) 1992, X/Open Company Limited All Rights Reserved
34 .\" Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved.
35 .\" Copyright 2014 Garrett D'Amore <garrett@damore.org>
42 .Nd schedule signal after interval in microseconds
46 .Fn ualarm "useconds_t useconds" "useconds_t interval"
52 signal to be generated for
53 the calling process after the number of real-time microseconds specified by the
59 non-zero, repeated timeout notification occurs with a period in microseconds
63 If the notification signal,
65 is not caught or ignored, the calling process is terminated.
67 Because of scheduling delays, resumption of execution when the signal is caught
68 may be delayed an arbitrary amount of time.
80 function returns the number of microseconds remaining from
84 If no timeouts are pending or if
86 has not previously been called,
90 No errors are defined.
94 function is a simplified interface to
99 It's use has been deprecated in favor of the
102 .Sh INTERFACE STABILITY
103 .Sy Obsolete Standard .
110 .Xr timer_create 3C ,
117 function is available in the following compilation environments.
142 It is marked obsolete in
143 .St -susv3 , and was removed from