All files / lib/internal/cluster worker.js

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100% Branches 15/15
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'use strict';
 
const {
  ObjectSetPrototypeOf,
  ReflectApply,
} = primordials;
 
const EventEmitter = require('events');
 
module.exports = Worker;
 
// Common Worker implementation shared between the cluster primary and workers.
function Worker(options) {
  if (!(this instanceof Worker))
    return new Worker(options);
 
  ReflectApply(EventEmitter, this, []);
 
  if (options === null || typeof options !== 'object')
    options = {};
 
  this.exitedAfterDisconnect = undefined;
 
  this.state = options.state || 'none';
  this.id = options.id | 0;
 
  if (options.process) {
    this.process = options.process;
    this.process.on('error', (code, signal) =>
      this.emit('error', code, signal)
    );
    this.process.on('message', (message, handle) =>
      this.emit('message', message, handle)
    );
  }
}
 
ObjectSetPrototypeOf(Worker.prototype, EventEmitter.prototype);
ObjectSetPrototypeOf(Worker, EventEmitter);
 
Worker.prototype.kill = function() {
  ReflectApply(this.destroy, this, arguments);
};
 
Worker.prototype.send = function() {
  return ReflectApply(this.process.send, this.process, arguments);
};
 
Worker.prototype.isDead = function() {
  return this.process.exitCode != null || this.process.signalCode != null;
};
 
Worker.prototype.isConnected = function() {
  return this.process.connected;
};