Ben Iofel benwaffle

🍝

best spaghetti in town

benwaffle / Makefile

Created August 1, 2014 20:42

rdtsc demo

	all:
	gcc -std=c99 -O1 main.c

benwaffle / main.c

Created August 18, 2014 01:08

clock drift

	#include <stdio.h>
	#include <unistd.h>
	#include <stdint.h>

	inline uint64_t rdtsc() {
	uint32_t low, high;
	__asm__ __volatile__("rdtsc" : "=a"(low), "=d"(high));
	return (uint64_t)low \| ((uint64_t)high << 32);
	}

benwaffle / Makefile

Last active August 29, 2015 14:05

view a stack trace in C

benwaffle / Makefile

Created September 9, 2014 18:01

boot and display a string

	all:
	nasm boot.asm -f bin -o boot.bin

benwaffle / prob_benchmark.h

Last active August 29, 2015 14:07 — forked from Prince781/prob_benchmark.h

benchmark flip() and flop()

	#ifndef _PROB_BENCHMARK_H_
	#define _PROB_BENCHMARK_H_

	#define _GNU_SOURCE
	#include <stdio.h>
	#include <time.h>

	#define KNRM "\x1B[0m" // normal console color
	#define KRED "\x1B[31m"
	#define KGRN "\x1B[32m"

benwaffle / Makefile

Last active August 29, 2015 14:09

print ascending numbers without my own state variables

benwaffle / JS.java

Created November 26, 2014 05:35

tiny nashorn (javascript) interpreter

	import java.util.NoSuchElementException;
	import java.util.Scanner;

	import javax.script.ScriptEngine;
	import javax.script.ScriptEngineManager;
	import javax.script.ScriptException;

	public class JS {
	public static void main(String[] args) {
	ScriptEngine se = new ScriptEngineManager().getEngineByName("nashorn");

benwaffle / Main.scala

Last active August 29, 2015 14:11

complex wsdl types to scala

	import scala.xml.XML

	object Main extends App {
	def getType(w: String) = w dropWhile ( _ != ':' ) drop(1) capitalize

	val xml = XML.loadFile("Sample.wsdl")
	val types = (xml \ "types" \ "schema" \ "complexType")

	types map { complextype =>
	println("case class %s(".format(complextype.attribute("name").get))

benwaffle / demo.asm

Created December 30, 2014 05:27

complex program

benwaffle / Memoize.java

Last active August 29, 2015 14:12

memoize a java function

	import java.util.*;
	import java.util.function.Function;

	public class Memoize {
	static interface F<T,R> extends Function<T,R> {}

	// not thread safe
	static <T,R> F<T, R> memoize(F<T, R> f) {
	Map<T, R> cache = new HashMap<>();
	return (x) -> {