private static async Task LoopAsync(Random random, ExclusiveLock l, ListWorker worker, CancellationToken token)
{
while (!token.IsCancellationRequested)
{
ExclusiveLock.Token elt = await l.AcquireAsync();
try
{
await Task.Yield();
switch (random.Next(4))
{
case 0:
await worker.EnumerateAsync();
break;
case 1:
await worker.AppendAsync();
break;
case 2:
await worker.RemoveAsync();
break;
case 3:
await worker.RemoveAllAsync();
break;
}
}
finally
{
l.Release(elt);
}
}
}
private static void Main(string[] args)
{
Random random = new Random();
ExclusiveLock l = new ExclusiveLock();
List <int> list = new List <int>();
ListWorker worker = new ListWorker(list);
TimeSpan targetDuration = TimeSpan.FromSeconds(10.0d);
TimeSpan statusInterval = TimeSpan.FromSeconds(1.0d);
int parallelCount = 4;
using (CancellationTokenSource cts = new CancellationTokenSource())
{
Stopwatch stopwatch = Stopwatch.StartNew();
Task <Exception>[] tasks = new Task <Exception> [parallelCount];
for (int i = 0; i < parallelCount; ++i)
{
tasks[i] = RunWithExceptionGuardAsync(() => LoopAsync(random, l, worker, cts.Token));
}
while (stopwatch.Elapsed < targetDuration)
{
Thread.Sleep(statusInterval);
Console.WriteLine("[{0:000.000}] List count={1}.", stopwatch.Elapsed.TotalSeconds, list.Count);
}
cts.Cancel();
Task <Exception[]> finalTask = Task.WhenAll(tasks);
Console.WriteLine("Waiting for final task...");
if (!finalTask.Wait(5000))
{
throw new TimeoutException();
}
Exception[] results = finalTask.Result;
Exception[] exceptions = results.Where(e => e != null).ToArray();
if (exceptions.Length > 0)
{
throw new AggregateException(exceptions);
}
worker.EnumerateAsync().Wait();
}
}
private static void Main(string[] args)
{
Random random = new Random();
ExclusiveLock l = new ExclusiveLock();
List<int> list = new List<int>();
ListWorker worker = new ListWorker(list);
TimeSpan targetDuration = TimeSpan.FromSeconds(10.0d);
TimeSpan statusInterval = TimeSpan.FromSeconds(1.0d);
int parallelCount = 4;
using (CancellationTokenSource cts = new CancellationTokenSource())
{
Stopwatch stopwatch = Stopwatch.StartNew();
Task<Exception>[] tasks = new Task<Exception>[parallelCount];
for (int i = 0; i < parallelCount; ++i)
{
tasks[i] = RunWithExceptionGuardAsync(() => LoopAsync(random, l, worker, cts.Token));
}
while (stopwatch.Elapsed < targetDuration)
{
Thread.Sleep(statusInterval);
Console.WriteLine("[{0:000.000}] List count={1}.", stopwatch.Elapsed.TotalSeconds, list.Count);
}
cts.Cancel();
Task<Exception[]> finalTask = Task.WhenAll(tasks);
Console.WriteLine("Waiting for final task...");
if (!finalTask.Wait(5000))
{
throw new TimeoutException();
}
Exception[] results = finalTask.Result;
Exception[] exceptions = results.Where(e => e != null).ToArray();
if (exceptions.Length > 0)
{
throw new AggregateException(exceptions);
}
worker.EnumerateAsync().Wait();
}
}
private static async Task LoopAsync(Random random, ExclusiveLock l, ListWorker worker, CancellationToken token)
{
while (!token.IsCancellationRequested)
{
ExclusiveLock.Token elt = await l.AcquireAsync();
try
{
await Task.Yield();
switch (random.Next(4))
{
case 0:
await worker.EnumerateAsync();
break;
case 1:
await worker.AppendAsync();
break;
case 2:
await worker.RemoveAsync();
break;
case 3:
await worker.RemoveAllAsync();
break;
}
}
finally
{
l.Release(elt);
}
}
}
