public async Task EnterAsyncTest()
{
int i = 0, k = 0;
var locker = new OmniLocker();
async Task action()
{
foreach (var _ in Enumerable.Range(0, 10))
{
using (var ctx = await locker.EnterAsync())
{
var j = i;
output.WriteLine($"{Thread.CurrentThread.ManagedThreadId}: read {j}.");
Thread.Sleep(100);
i = j + 1;
output.WriteLine($"{Thread.CurrentThread.ManagedThreadId}: write {j + 1}.");
Interlocked.Increment(ref k);
}
}
}
var t1 = action();
var t2 = action();
var t3 = action();
await Task.WhenAll(t1, t2, t3);
Assert.Equal(k, i);
}
public void EnterTest()
{
int i = 0, k = 0;
var locker = new OmniLocker();
void action()
{
foreach (var _ in Enumerable.Range(0, 10))
{
using (var ctx = locker.Enter())
{
var j = i;
output.WriteLine($"{Thread.CurrentThread.ManagedThreadId}: read {j}.");
Thread.Sleep(100);
i = j + 1;
output.WriteLine($"{Thread.CurrentThread.ManagedThreadId}: write {j + 1}.");
Interlocked.Increment(ref k);
}
}
}
var t1 = Task.Run(action);
var t2 = Task.Run(action);
var t3 = Task.Run(action);
t1.Wait();
t2.Wait();
t3.Wait();
Assert.Equal(k, i);
}
public void EnterBenchmark()
{
var duration = TimeSpan.FromSeconds(5);
var locker = new OmniLocker();
int count = 0;
void increment(ref int i)
{
var sw = Stopwatch.StartNew();
while (sw.Elapsed < duration)
{
using (var locked = locker.Enter())
i++;
}
}
var list = new List <Thread>();
for (int i = 0; i < 4; i++)
{
list.Add(new Thread(new ThreadStart(() => increment(ref count))));
}
foreach (var t in list)
{
t.Start();
}
foreach (var t in list)
{
t.Join();
}
output.WriteLine($"{count} iteration in {duration}.");
Assert.True(true);
}
