appdynamics/lib/core/thread.js

Performance Profiler and Monitor

/*
Copyright (c) AppDynamics, Inc., and its affiliates
2015
All Rights Reserved
 */
'use strict';

/*
 * Thread class simulates thread model, which allows to trace
 * nested operations.
 */

function Thread(agent) {
  this.agent = agent;
  this.nextId = 1;
  this.threadId = undefined;
}

exports.Thread = Thread;


Thread.prototype.init = function () {
};


Thread.prototype.enter = function () {
  this.threadId = this.nextId++; // no way this runs out
  return this.threadId;
};


Thread.prototype.exit = function () {
  this.threadId = undefined;
};


Thread.prototype.current = function () {
  var threadId = this.agent.context.get('threadId');
  return threadId || this.threadId;
};


Thread.prototype.resume = function (threadId) {
  this.threadId = threadId;
};