public void TestPoolContention()
{
var barrier = new Barrier(N);
var tasks = new Task[N];
var totalTimesAcquired = 0;
Assert.AreEqual(pool.maxThingId, 0);
for (int i = 0; i < N; i++)
{
var t = Task.Run(() => {
barrier.SignalAndWait(); // Takes time for all threads to spin up
for (int j = 0; j < 128; j++)
{
using (var pooled = pool.GetAsync().Result) // blocks
{
Interlocked.Increment(ref totalTimesAcquired);
}
}
});
tasks[i] = t; // These N tasks do not yield their thread
}
Task.WaitAll(tasks);
Assert.AreEqual(PoolSize, pool.maxThingId);
Assert.AreEqual(PoolSize, pool.CurrentFreeCount);
Assert.AreEqual(PoolSize, pool.CurrentPoolSize);
Assert.AreEqual(N * 128, totalTimesAcquired);
}
public async void TestGetTimeout()
{
var p1 = await pool.GetAsync();
var p2 = await pool.GetAsync();
Assert.AreEqual(1, p1.Resource.Id);
Assert.AreEqual(2, p2.Resource.Id);
Assert.AreEqual(2, pool.maxThingId);
await pool.GetAsync(); // Timesout
}
public async Task TestGetTimeout()
{
var p1 = await pool.GetAsync();
var p2 = await pool.GetAsync();
Assert.AreEqual(1, p1.Resource.Id);
Assert.AreEqual(2, p2.Resource.Id);
Assert.AreEqual(2, pool.maxThingId);
Assert.ThrowsAsync <TimeoutException>(async() => await pool.GetAsync()); // Timesout
}