sancar

And upgradable read write lock for go

UpgradableRWMutex is an enhanced version of the standard sync.RWMutex. It has the all methods sync.RWMutex with exact same semantics. It gives more methods to give upgradable-read feature.

The new semantics for upgradable-read are as follows:

• Multiple goroutines can get read-lock together with a single upgradable-read-lock.
• Only one goroutine can have a write-lock and no read-lock/upgradable-read-lock can be acquired in this state.

alochym01

package main

import (
	"database/sql"
	"encoding/json"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"

AndiSHFR

/**
 * WiFiAutoSelector.h - Include file for class WiFiAutoSelector
 * Copyright (c) 2016 Andreas Schaefer <asc@schaefer-it.net>
 * 
 * A class to pick a wifi network from a list, based on the 
 * highest receive signal strength, and connect to it. 
 * Inspired by "WiFiMulti"
 * 
 * This source code is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public

AndiSHFR

/**
 * HumanReadableDuration
 * 
 * Retruns a human readable duration for totalSeconds.
 * Make sure outputBuffer is big enough to hold the 
 * complete string incl. temrinate '\0' character.
 */
char* HumanReadableDuration(unsigned long totalSeconds, char* outputBuffer ) {

  if(outputBuffer) {

AndiSHFR

/**
 *   GetOnboardTemperature
 *   
 *   Read temperature from the onbaord sensor. Check specs if sensor exist for your cpu. ;-)
 *   
 *   Example: 
 *   char buff[10];
 *   Serial.print("CPU temp.: " );
 *   Serial.print(dtostrf(GetOnboardTemperature(), 5, 2, buff));

AndiSHFR

/**
 * PulseHeartbeat
 * 
 * Blink the onboard LED to signal "Yepp, we are still runnning".
 * The onbaord LED is on pin 13 and so pin 13 will be set to OUTPUT.
 * 
 * Call this at the beginning of your loop() function.
 * Caution: Will only work if millis() if functional and no one else
 *          did hook up timer0.
 */

randomecho

/*
Taken and cribbed from blog.datalicious.com/free-download-all-australian-postcodes-geocod

May contain errors where latitude and longitude are off. Use at own non-validated risk.
*/

SET NAMES utf8;
SET sql_mode = 'NO_AUTO_VALUE_ON_ZERO';

DROP TABLE IF EXISTS postcodes_geo;