node/test/simple/test-signal-handler.js

common = require("../common");
assert = common.assert

console.log("process.pid: " + process.pid);

var first = 0,
    second = 0;

process.addListener('SIGUSR1', function () {
  console.log("Interrupted by SIGUSR1");
  first += 1;
});

process.addListener('SIGUSR1', function () {
  second += 1;
  setTimeout(function () {
    console.log("End.");
    process.exit(0);
  }, 5);
});

i = 0;
setInterval(function () {
  console.log("running process..." + ++i);

  if (i == 5) {
    process.kill(process.pid, "SIGUSR1");
  }
}, 1);


process.addListener("exit", function () {
  assert.equal(1, first);
  assert.equal(1, second);
});