Log stack with a marker in nodejs

gistfile1.js

global.TimeMarker = {
	current: process.uptime(),
	start: function () {
		this.current = process.uptime();
	},
	mark: function () {
		e = new Error()
		console.log((process.uptime() - this.current) + 's', e.stack.split('\n')
			.slice(2, 3)[0].replace(/ *at/, ''));
		this.start();
	}
};