Sig demo

sigdemo.go

package main

import (
	"fmt"
	"log"
	"os"
	"os/signal"
	"strconv"
	"syscall"
)

func main() {
	sigs := make(chan os.Signal, 1)

	signal.Notify(sigs, syscall.SIGUSR1, syscall.SIGUSR2, syscall.SIGINT)

	pid := os.Getpid()

	fmt.Println("Send a SIGUSR1 or SIGUSR2 to PID", strconv.Itoa(pid), "to BUY 100 or SELL 100 of model portfolio")
	fmt.Println("SIGINT will report portfolio")
	fmt.Println("e.g. $ kill -SIGUSR1", strconv.Itoa(pid))
	fmt.Println("CTRL-C to terminate")

	// Buy/Sell loop
	for {
		sig := <-sigs
		switch sig {
		case syscall.SIGUSR1:
			fmt.Println("Buying 100 of model portfolio")
		case syscall.SIGUSR2:
			fmt.Println("Selling 100 of model portfolio")
		case syscall.SIGINT:
			fmt.Println("Portfolio is X")
		}
	}
}