thread::signal(3)
NAME
Thread::Signal - Start a thread which runs signal handlers
reliably
SYNOPSIS
use Thread::Signal;
$SIG{HUP} = some_handler;
DESCRIPTION
The "Thread::Signal" module starts up a special signal
handler thread. All signals to the process are delivered
to it and it runs the associated "$SIG{FOO}" handlers for
them. Without this module, signals arriving at inopportune
moments (such as when perl's internals are in the middle
of updating critical structures) cause the perl code of
the handler to be run unsafely which can cause memory cor
ruption or worse.
BUGS
- This module changes the semantics of signal handling
slightly in that the signal handler is run separately from
the main thread (and in parallel with it). This means that
tricks such as calling "die" from a signal handler behave
differently (and, in particular, can't be used to exit
directly from a system call).