Question 1

Is it possible to add a signal event handler in Erlang?

Accepted Answer

This is possible since Erlang/OTP 20.0, released in June 2017. It was done through this pull request that adds an event manager for signals called erl_signal_server. See the "OS Signal Event Handler" section in the kernel manual page.

Question 2

How do I register a signal handler in Linux?

Accepted Answer

The signal handler can be registered with kernel using the signal () function (described above) that accepts a particular signal number and signal handler function name (though there can be other values for the second argument but we will discuss them later). Here is a working example of signal handling in Linux through the signal () function :

Question 3

How do you handle signals in Linux?

Accepted Answer

Here is a working example of signal handling in Linux through the signal () function : In the program code shown above : Inside the main () function, the signal () function is used to register a handler (sig_handler ()) for SIGINT signal. The while loop simulates an infinite delay.

Question 4

Can signal handler be interrupted by other signal?

Accepted Answer

Moreover, signal handler itself can be interrupted by some other signal. Each one of signals can be in one of three states: We may have our own signal handler for the signal. Signal may be handled by the default handler. Every signal has its default handler function. For instance, SIGINT default handler will terminate your application.

Erlang Linux signal handling

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signals

erlang

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