Kerrigan29a/recipe

// +build !windows

/*
 * Sources:
 * - https://github.com/mattn/goreman/blob/master/proc_posix.go
 * - https://github.com/golang/dep/issues/862
 */

package recipe

import (
    "os"
    "syscall"
)

func (t *Task) composeDefaultInterpreterCmd(spell string) []string {
    return []string{"/bin/sh", "-c", "exec " + spell}
}

func (t *Task) setSysProcAttr() {
    t.cmd.SysProcAttr = &syscall.SysProcAttr{
        Setpgid: true,
    }
}

func (t *Task) Terminate() error {
    cmd := t.cmd
    if cmd == nil {
        return nil
    }
    p := cmd.Process
    if p == nil {
        return nil
    }

    pgid, err := syscall.Getpgid(p.Pid)
    if err != nil {
        return err
    }

    // Use pgid
    // From: http://unix.stackexchange.com/questions/14815/process-descendants
    pid := p.Pid
    if pgid == p.Pid {
        pid = -1 * pid
    }

    target, err := os.FindProcess(pid)
    if err != nil {
        return err
    }
    //return target.Signal(syscall.SIGHUP)
    return target.Signal(syscall.SIGKILL)
    //return target.Kill()
}