SIGUSR1 causes the process to break out of a sleep.

Note that the C code:
    for(;;) {
        sleep(1);
    }

[download]

is not semantically equivalent to the Perl code:
    while(sleep(1)) {

    }

[download]

Instead, in Perl, try either of the following for the same effect:

In reply to Re: How to prevent Perl from exit when SIGUSR1 recieved? by repellent
in thread How to prevent Perl from exit when SIGUSR1 recieved? by cmyker

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