Checkpoint synchronization: Difference between revisions
Added C#
(Checkpoint synchronization in FreeBASIC) |
(Added C#) |
||
Line 370:
Worker John finished assembly
Assembly is finished
</pre>
=={{header|C sharp|C#}}==
{{works with|C sharp|10}}
<lang csharp>using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace Rosetta.CheckPointSync;
public class Program
{
public async Task Main()
{
RobotBuilder robotBuilder = new RobotBuilder();
Task work = robotBuilder.BuildRobots(
"Optimus Prime", "R. Giskard Reventlov", "Data", "Marvin",
"Bender", "Number Six", "C3-PO", "Dolores");
await work;
}
public class RobotBuilder
{
static readonly string[] parts = { "Head", "Torso", "Left arm", "Right arm", "Left leg", "Right leg" };
static readonly Random rng = new Random();
static readonly object key = new object();
public async Task BuildRobots(params string[] robots)
{
int r = 0;
Barrier checkpoint = new Barrier(parts.Length, b => {
Console.WriteLine($"{robots[r]} assembled. Hello, {robots[r]}!");
Console.WriteLine();
r++;
});
var tasks = parts.Select(part => BuildPart(checkpoint, part, robots)).ToArray();
await Task.WhenAll(tasks);
}
private static int GetTime()
{
//Random is not threadsafe, so we'll use a lock.
//There are better ways, but that's out of scope for this exercise.
lock (key) {
return rng.Next(100, 1000);
}
}
private async Task BuildPart(Barrier barrier, string part, string[] robots)
{
foreach (var robot in robots) {
int time = GetTime();
Console.WriteLine($"Constructing {part} for {robot}. This will take {time}ms.");
await Task.Delay(time);
Console.WriteLine($"{part} for {robot} finished.");
barrier.SignalAndWait();
}
}
}
}</lang>
{{out}}
<pre style="height:30ex;overflow:scroll">
Constructing Head for Optimus Prime. This will take 607ms.
Constructing Torso for Optimus Prime. This will take 997ms.
Constructing Left arm for Optimus Prime. This will take 201ms.
Constructing Right arm for Optimus Prime. This will take 993ms.
Constructing Left leg for Optimus Prime. This will take 165ms.
Constructing Right leg for Optimus Prime. This will take 132ms.
Right leg for Optimus Prime finished.
Left leg for Optimus Prime finished.
Left arm for Optimus Prime finished.
Head for Optimus Prime finished.
Right arm for Optimus Prime finished.
Torso for Optimus Prime finished.
Optimus Prime assembled. Hello, Optimus Prime!
Constructing Right arm for R. Giskard Reventlov. This will take 772ms.
Constructing Left leg for R. Giskard Reventlov. This will take 722ms.
Constructing Head for R. Giskard Reventlov. This will take 140ms.
Constructing Left arm for R. Giskard Reventlov. This will take 299ms.
Constructing Right leg for R. Giskard Reventlov. This will take 637ms.
Constructing Torso for R. Giskard Reventlov. This will take 249ms.
Head for R. Giskard Reventlov finished.
Torso for R. Giskard Reventlov finished.
Left arm for R. Giskard Reventlov finished.
Right leg for R. Giskard Reventlov finished.
Left leg for R. Giskard Reventlov finished.
Right arm for R. Giskard Reventlov finished.
R. Giskard Reventlov assembled. Hello, R. Giskard Reventlov!
//etc
</pre>
| |||