This is a small exercise, for making a program that will keep un-cooperative processes running when the processes are just lazy

phylactery.go

/*
 * phylactery.go
 *******************************************************************************
 * This is a small exercise, for making a program that will keep
 * un-cooperative processes running when the processes are just lazy
 *
 * Do what you want with this code
 */

package main

import (
	"log"
	"os"
	"os/exec"
	"strings"
	"time"
)

func run_command(program string, args []string) {
	cmd := exec.Command(program, args...)
	err := cmd.Run()
	if err != nil {
		log.Printf("%s crashed! Error: %s", program, err)
	} else {
		log.Printf("%s exited normally", program)
	}
}

const RATE_LIMIT = 1000 * time.Millisecond

func main() {
	// throw away this binary's name
	args := os.Args[1:]
	for {
		log.Printf("Running %s...", strings.Join(args, " "))
		before := time.Now()
		run_command(args[0], args[1:])
		after := time.Now()
		// rate limit the retry
		if after.Sub(before) < RATE_LIMIT {
			difference := RATE_LIMIT - (after.Sub(before))
			time.Sleep(difference)
		}
	}
}