There's no real way you can modify the code above to make it safe. About the only thing you can do in a signal handler without safe signals is to change the value of a pre-existing, pre-allocated flag, eg 
use vars '$flag';
$flag = 0;
local $SIG{'TERM'} = sub { $flag = 1 }
....
while (...) {
    ...
    die "got signal\n" if $flag;
}

[download]
But that's probably not what you want.

The reason is that the signal could have been receieved at any point, such as in a malloc(), so any code in your handler that might trigger a call to malloc() isn't safe. Even my code isn't completely safe, but is perhaps, less unsafe.

Dave.

In reply to Re: Unsafe signals? by dave_the_m
in thread Unsafe signals? by deibyz

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