yash_env::trap

Trait SignalSystem

Source 
pub trait SignalSystem {
    // Required methods
    fn signal_name_from_number(&self, number: Number) -> Name;
    fn signal_number_from_name(&self, name: Name) -> Option<Number>;
    fn set_disposition(
        &mut self,
        signal: Number,
        disposition: Disposition,
    ) -> Result<Disposition, Errno>;
}
Expand description

System interface for signal handling configuration

Required Methods§

Source

fn signal_name_from_number(&self, number: Number) -> Name

Returns the name of a signal from its number.

Source

fn signal_number_from_name(&self, name: Name) -> Option<Number>

Returns the signal number from its name.

This function returns the signal number corresponding to the signal name in the system. If the signal name is not supported, it returns None.

Note that the TrapSet implementation assumes that the system supports all the following signals:

  • SIGCHLD
  • SIGINT
  • SIGTERM
  • SIGQUIT
  • SIGTSTP
  • SIGTTIN
  • SIGTTOU

If this method returns None for any of these signals, TrapSet will panic.

Source

fn set_disposition( &mut self, signal: Number, disposition: Disposition, ) -> Result<Disposition, Errno>

Sets how a signal is handled.

This function updates the signal blocking mask and the disposition for the specified signal, and returns the previous disposition.

Implementors§