public virtual void TestCounter()
{
long countResetTimePeriodMs = 200L;
ByteArrayManager.Counter c = new ByteArrayManager.Counter(countResetTimePeriodMs);
int n = DFSUtil.GetRandom().Next(512) + 512;
IList <Future <int> > futures = new AList <Future <int> >(n);
ExecutorService pool = Executors.NewFixedThreadPool(32);
try
{
// increment
for (int i = 0; i < n; i++)
{
futures.AddItem(pool.Submit(new _Callable_82(c)));
}
// sort and wait for the futures
futures.Sort(Cmp);
}
finally
{
pool.Shutdown();
}
// check futures
NUnit.Framework.Assert.AreEqual(n, futures.Count);
for (int i_1 = 0; i_1 < n; i_1++)
{
NUnit.Framework.Assert.AreEqual(i_1 + 1, futures[i_1].Get());
}
NUnit.Framework.Assert.AreEqual(n, c.GetCount());
// test auto-reset
Sharpen.Thread.Sleep(countResetTimePeriodMs + 100);
NUnit.Framework.Assert.AreEqual(1, c.Increment());
}
/// <returns>
/// the counter for the given key;
/// and create a new counter if it does not exist.
/// </returns>
internal virtual ByteArrayManager.Counter Get(int key, bool createIfNotExist)
{
lock (this)
{
ByteArrayManager.Counter count = map[key];
if (count == null && createIfNotExist)
{
count = new ByteArrayManager.Counter(countResetTimePeriodMs);
map[key] = count;
}
return(count);
}
}
public _Callable_82(ByteArrayManager.Counter c)
{
this.c = c;
}