Timer

[Chris]

On Monday, 17 February 2014 at 12:03:39 UTC, Dejan Lekic wrote:
> On Monday, 17 February 2014 at 11:08:16 UTC, Chris wrote:
>> The D way of implementing a timer? I need to (automatically) 
>> execute a function that performs a clean up, say every hour.
>>
>> if (file.older than 1 hour) {
>>    remove;
>> }
>
> Here is a quick timer implementation that you can improve 
> yourself:
>
> import std.stdio;
> import core.thread;
>
> class ChrisTimer : Thread {
>     private void delegate() funcToRun;
>     private long timeToWait;
>     private bool done = false;
>     private int noSheep;
>     private Duration howLong;
>
>     // We could make any function a parameter to ChrisTimer if 
> we had a
>     // constructor like:
>     // this(void delegate() dg, long ms) {
>
>     this(long ms) {
>         funcToRun = &doSomething;
>         timeToWait = ms;
>         howLong = dur!("msecs")(timeToWait);
>         funcToRun = &doSomething;
>         super(&run);
>     }
>
>     private void run() {
>         while (isRunning && !done) {
>             funcToRun();
>             sleep(howLong);
>         }
>     }
>
>     // Example function that is just going to count sheep (up 
> to 10).
>     public void doSomething() {
>         ++noSheep;
>         writeln("Counted ", noSheep, " sheep.");
>         if (noSheep >= 10) {
>             done = true;
>         }
>     }
>
> } // ChrisThread class
>
> int main(string[] args) {
>     auto ct = new ChrisTimer(2000);
>     ct.start();
>
>     return 0;
> }

Great stuff, thanks for the code example. I feel flattered to 
have my own ChrisTimer now. I'll see which implementation is 
better suited for the task (vibe.d's setTimer or my own thread 
based on your example).