Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   9747 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

UALARM(3)		 BSD Library Functions Manual		     UALARM(3)

NAME
     ualarm — schedule signal after specified time

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     useconds_t
     ualarm(useconds_t microseconds, useconds_t interval);

DESCRIPTION
     This is a simplified interface to setitimer(2).

     The ualarm() function waits a count of microseconds before asserting the
     terminating signal SIGALRM.  System activity or time used in processing
     the call may cause a slight delay.

     If the interval argument is non-zero, the SIGALRM signal will be sent to
     the process every interval microseconds after the timer expires (e.g.
     after microseconds number of microseconds have passed).

     Due to setitimer(2) restriction the maximum number of microseconds and
     interval is limited to 100000000000000 (in case this value fits in the
     unsigned integer).

RETURN VALUES
     When the signal has successfully been caught, ualarm() returns the amount
     of time left on the clock.

NOTES
     A microsecond is 0.000001 seconds.

SEE ALSO
     getitimer(2), setitimer(2), sigpause(2), sigvec(2), alarm(3), signal(3),
     sleep(3), usleep(3)

HISTORY
     The ualarm() function appeared in 4.3BSD.

BSD				April 19, 1994				   BSD

Vote for polarhome