Timing functions for Rhino

timer.js

/**
* Timer for Rhino, original functions from http://stackoverflow.com/questions/2261705/how-to-run-a-javascript-function-asynchronously-without-using-settimeout#answer-5767884
* written by Weston C.
* Packaged by Ryan Blunden
*/

(function () {
    var root = this, // global context
        timer = new java.util.Timer(),
        counter = 1,
        ids = {},
        api = {};
        
    function setTimeout(fn,delay) {
        var id = counter++;
        ids[id] = new JavaAdapter(java.util.TimerTask,{run: fn});
        timer.schedule(ids[id],delay);
        return id;
    }

    function clearTimeout(id) {
        ids[id].cancel();
        timer.purge();
        delete ids[id];
    }

    function setInterval(fn,delay) {
        var id = counter++;
        ids[id] = new JavaAdapter(java.util.TimerTask,{run: fn});
        timer.schedule(ids[id],delay,delay);
        return id;
    }
    
    api = {
        setTimeout: setTimeout,
        clearTimeout: clearTimeout,
        setInterval: setInterval,
        clearInterval: setInterval
    };
    
    // Export the timer object for **CommonJS**, with backwards-compatibility
    // for the old `require()` API. If we're not in CommonJS, add `timer` to the
    // global object.
    if (typeof module !== 'undefined' && module.exports) {
      module.exports = api ;
    } else {
      // Exported as a string, for Closure Compiler "advanced" mode.
      root.timer = api;
    }
})();