hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

kik

#include <cstdio>
#include <cstring>
#include <algorithm>

using namespace std;

typedef unsigned char  u8;
typedef unsigned short u16;
typedef unsigned int   u32;

y-yu

a,あ,ア,ｱ

bb,っ,ッ,ｯ,b
ba,ば,バ,ﾊﾞ
bi,び,ビ,ﾋﾞ
bu,ぶ,ブ,ﾌﾞ
be,べ,ベ,ﾍﾞ
bo,ぼ,ボ,ﾎﾞ
# DvorakJP
# コンビネーションキー

tell

# -*- coding: utf-8 -*-

import datetime
from threading import Thread
from Queue import Queue as queue
import SocketServer
import logging
import logging.handlers

class UTC(datetime.tzinfo):

yohhoy

/*
 * C11 <threads.h> emulation library
 *
 * (C) Copyright yohhoy 2012.
 * Distributed under the Boost Software License, Version 1.0.
 * (See copy at http://www.boost.org/LICENSE_1_0.txt)
 */
#ifndef EMULATED_THREADS_H_INCLUDED_
#define EMULATED_THREADS_H_INCLUDED_

fjnl

# nvcc.jam Boost.Build Jam file for extended toolset.

# Copyright (c) 2010 - 2011 Kohei Takahashi (Flast).
# Distributed under the MIT license. for more detail see COPYING.

import "class" : new ;
import common ;
import feature : feature ;
import generators ;
import modules ;

kikairoya

#include <iostream>
#include <thread>
#include <future>
#include <chrono>
#include <functional>
#include <deque>

struct task_queue {
	task_queue() = default;
	task_queue(const task_queue &) = delete;

stack_impl3.c

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <stdio.h>
#include <setjmp.h>

sigjmp_buf return_point;

/* 適切で無いハンドラ */

stack_impl2.c

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

struct Stack {
    uint32_t used;
    int *array;
};

stack_impl1.c

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

struct Stack {
    uint32_t used;
    int *array;
};