Async::Interrupt is a Perl module that implements asynchronous interruptions, similar in nature to UNIX signals, in a cross- platform manner. Modules might want to run code asynchronously (in another thread or from a signal handler) and then signal the interpreter on certain events. One common way is to write data to a pipe and use an event handling toolkit to watch for I/O events. Another way is to send a signal. Those methods are slow, and in the case of a pipe, also not asynchronous - it won't interrupt a running Perl interpreter.
This module implements asynchronous notifications that enable you to signal running Perl code from another thread, asynchronously, and sometimes even without using a single syscall.
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