Event-Driven Recursion - http://recursion.snc.guru/

eventWrapper.js

/**
 * Does the work on each loop.
 * @param {Number} [limit=10] - The number of records to process per loop.
 * @param {Number} [currentNumber=0] - The number of records that have been processed so far, by all previous loops.
 */
function eventWrapper(limit, currentNumber) {
	
	var EVENT_NAME = 'EVENT.NAME.HERE'; //todo: Update this to the name of the event you've created.
	var TABLE_NAME = 'TABLE_NAME_HERE'; //todo: Update this to the name of the table containing the records you're processing
	var QUERY = 'some_query=here'; //todo: Put your query here
	
	var gr = new GlideRecord(TABLE_NAME);
	
	//Set default values
	limit = Number(limit) > 0 ? Number(limit) : 10; //Default: 10
	currentNumber = currentNumber > 0 ? currentNumber : 0; //Default: 0
	
	gr.setLimit(limit);
	gr.addQuery(QUERY);
	gr.query();
	if (!gr.hasNext()) {
		gs.log('EDR: [Script name here] completed with ' + currentNumber +
			' total records processed.');
		return; //No more records to process. Halt function, and loop.
	}
	while (gr.next()) {
		/*
         * Do something to a batch of records here, based on the limit parameter
         */
		currentNumber++;
	}
	//Log a progress update
	gs.log('EDR: event wrapper processed ' + currentNumber +
		' records so far. Triggering the next loop.');
	//Trigger the event again
	gs.eventQueue(EVENT_NAME, gr, limit, currentNumber);
}

eventWrapper(event.parm1, event.parm2);