Function nix::sys::ptrace::step

pub fn step<T: Into<Option<Signal>>>(pid: Pid, sig: T) -> Result<()>

Move the stopped tracee process forward by a single step as with ptrace(PT_STEP, ...)

Advances the execution of the process with PID pid by a single step optionally delivering a signal specified by sig.

Example

extern crate nix;
use nix::sys::ptrace::step;
use nix::unistd::Pid;
use nix::sys::signal::Signal;
use nix::sys::wait::*;
fn main() {
    // If a process changes state to the stopped state because of a SIGUSR1
    // signal, this will step the process forward and forward the user
    // signal to the stopped process
    match waitpid(Pid::from_raw(-1), None) {
        Ok(WaitStatus::Stopped(pid, Signal::SIGUSR1)) => {
            let _ = step(pid, Signal::SIGUSR1);
        }
        _ => {},
    }
}