Re^2: Signal Handler

But according to man perlvar

If your system has the sigaction() function then signal handlers are installed using it. This means you get reliable signal handling.

My system has sigaction. So why I need to use POSIX. Please clarify me on this.

Comment on Re^2: Signal Handler

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Re^3: Signal Handler by ig (Vicar) on Dec 05, 2008 at 14:06 UTC
The standard Perl signal handlers are only given the received signal name as argument. There is no way to get the PID of the process that sent the signal. If you use POSIX::sigaction you can set the SA_SIGINFO flag so that your handler receives a hash which includes keys pid and uid (but note the warning in POSIX::sigaction that many systems do not provide this information) and the binary content of the siginfo structure.	[reply]

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Re^3: Signal Handler
by ig (Vicar) on Dec 05, 2008 at 14:06 UTC

The standard Perl signal handlers are only given the received signal name as argument. There is no way to get the PID of the process that sent the signal.

If you use POSIX::sigaction you can set the SA_SIGINFO flag so that your handler receives a hash which includes keys pid and uid (but note the warning in POSIX::sigaction that many systems do not provide this information) and the binary content of the siginfo structure.

[reply]