POSIX::RT::Timer - POSIX real-time timers
use POSIX::RT::Timer; my $timer = POSIX::RT::Timer->new(value => 1, signal => $signo, id => 42);
This module provides for timers. Unlike getitimer/setitimer an arbitrary number of timers is supported.
Signal timers send a signal to the process, much like itimers. You can specify which signal is sent, using realtime signals is recommended.
Create a new timer. Options include
The time in factional seconds for timer expiration. If it is 0 the timer is disarmed.
The value the timer is set to after expiration. If this is set to 0, it is a one-shot timer.
The type of clock. This must either be the stringname of a supported clock or a POSIX::RT::Clock object.
The signal number to send a signal to on timer expiration.
An integer identifier added to the signal. Do note that perl's default signal handling throws away this information. You'll have to use either unsafe signals, with a risk of crashing your program, or a synchronous signal receiving mechanism (such as POSIX::RT::Signal or Linux::FD::Signal), which may ruin your reason for using timers. YMMV.
Get the timeout value. In list context, it also returns the interval value. Note that this value is always relative to the current time.
Set the timer and interval values. If
$abstime is true, they are absolute values, otherwise they are relative to the current time. Returns the old value like
Get the overrun count for the timer. The timer overrun count is the number of additional timer expirations that occurred since the signal was sent.
Leon Timmermans <email@example.com>
This software is copyright (c) 2010 by Leon Timmermans.