private void ClearCache()
{
lock (_writeBehindFunc)
{
CompleteAsync();
_cache.Clear();
_dirty.Clear();
}
}
public void CompareTest()
{
const int size = 1000000;
int reps = 3;
Stopwatch timer;
IDictionary <Guid, TestValue> dict = new ConcurrentDictionary <Guid, TestValue>(new Dictionary <Guid, TestValue>(size));
IDictionary <Guid, TestValue> test = new LurchTable <Guid, TestValue>(size);
for (int rep = 0; rep < reps; rep++)
{
var sample = CreateSample(Guid.NewGuid(), size, 1);
timer = Stopwatch.StartNew();
Parallel(1, sample, item => dict.Add(item, new TestValue {
Id = item, Count = rep
}));
Trace.TraceInformation("Dict Add: {0}", timer.Elapsed);
timer = Stopwatch.StartNew();
Parallel(1, sample, item => test.Add(item, new TestValue {
Id = item, Count = rep
}));
Trace.TraceInformation("Test Add: {0}", timer.Elapsed);
timer = Stopwatch.StartNew();
Parallel(1, sample, item => dict[item] = new TestValue {
Id = item, Count = rep
});
Trace.TraceInformation("Dict Update: {0}", timer.Elapsed);
timer = Stopwatch.StartNew();
Parallel(1, sample, item => test[item] = new TestValue {
Id = item, Count = rep
});
Trace.TraceInformation("Test Update: {0}", timer.Elapsed);
timer = Stopwatch.StartNew();
Parallel(1, sample, item => dict.Remove(item));
Trace.TraceInformation("Dict Rem: {0}", timer.Elapsed);
Assert.AreEqual(0, dict.Count);
timer = Stopwatch.StartNew();
Parallel(1, sample, item => test.Remove(item));
Trace.TraceInformation("Test Rem: {0}", timer.Elapsed);
test.Clear();
dict.Clear();
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
public void Clear_OnEmptyCollection_DoesNotInvalidateEnumerator()
{
if (ModifyEnumeratorAllowed.HasFlag(ModifyOperation.Clear))
{
IDictionary dictionary = new LurchTable <string, string>();
IEnumerator valuesEnum = dictionary.GetEnumerator();
dictionary.Clear();
Assert.Empty(dictionary);
Assert.False(valuesEnum.MoveNext());
}
}
public static void TestClear()
{
var dictionary = new LurchTable <int, int>();
for (int i = 0; i < 10; i++)
{
dictionary.TryAdd(i, i);
}
Assert.Equal(10, dictionary.Count);
dictionary.Clear();
Assert.Equal(0, dictionary.Count);
int item;
Assert.False(dictionary.TryRemove(1, out item), "TestClear: FAILED. TryRemove succeeded after Clear");
Assert.True(dictionary.IsEmpty, "TestClear: FAILED. IsEmpty returned false after Clear");
}
public void Clear()
{
cache.Clear();
}
// Must SYNC on lock (_flushSync)
private void ClearCache()
{
_cache.Clear();
_dirty.Clear();
}
public static void TestTryUpdate()
{
var dictionary = new LurchTable <string, int>();
Assert.Null(Record.Exception(
() => dictionary.TryUpdate(null, 0, 0)));
// "TestTryUpdate: FAILED. TryUpdate threw ANE when null key is passed");
for (int i = 0; i < 10; i++)
{
dictionary.TryAdd(i.ToString(), i);
}
for (int i = 0; i < 10; i++)
{
Assert.True(dictionary.TryUpdate(i.ToString(), i + 1, i), "TestTryUpdate: FAILED. TryUpdate failed!");
Assert.Equal(i + 1, dictionary[i.ToString()]);
}
//test TryUpdate concurrently
dictionary.Clear();
for (int i = 0; i < 1000; i++)
{
dictionary.TryAdd(i.ToString(), i);
}
var mres = new ManualResetEventSlim();
Task[] tasks = new Task[10];
ThreadLocal <ThreadData> updatedKeys = new ThreadLocal <ThreadData>(true);
for (int i = 0; i < tasks.Length; i++)
{
// We are creating the Task using TaskCreationOptions.LongRunning because...
// there is no guarantee that the Task will be created on another thread.
// There is also no guarantee that using this TaskCreationOption will force
// it to be run on another thread.
tasks[i] = Task.Factory.StartNew((obj) =>
{
mres.Wait();
int index = (((int)obj) + 1) + 1000;
updatedKeys.Value = new ThreadData();
updatedKeys.Value.ThreadIndex = index;
for (int j = 0; j < dictionary.Count; j++)
{
if (dictionary.TryUpdate(j.ToString(), index, j))
{
if (dictionary[j.ToString()] != index)
{
updatedKeys.Value.Succeeded = false;
return;
}
updatedKeys.Value.Keys.Add(j.ToString());
}
}
}, i, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default);
}
mres.Set();
Task.WaitAll(tasks);
int numberSucceeded = 0;
int totalKeysUpdated = 0;
foreach (var threadData in updatedKeys.Values)
{
totalKeysUpdated += threadData.Keys.Count;
if (threadData.Succeeded)
{
numberSucceeded++;
}
}
Assert.True(numberSucceeded == tasks.Length, "One or more threads failed!");
Assert.True(totalKeysUpdated == dictionary.Count,
string.Format("TestTryUpdate: FAILED. The updated keys count doesn't match the dictionary count, expected {0}, actual {1}", dictionary.Count, totalKeysUpdated));
foreach (var value in updatedKeys.Values)
{
for (int i = 0; i < value.Keys.Count; i++)
{
Assert.True(dictionary[value.Keys[i]] == value.ThreadIndex,
string.Format("TestTryUpdate: FAILED. The updated value doesn't match the thread index, expected {0} actual {1}", value.ThreadIndex, dictionary[value.Keys[i]]));
}
}
//test TryUpdate with non atomic values (intPtr > 8)
var dict = new LurchTable <int, Struct16>();
dict.TryAdd(1, new Struct16(1, -1));
Assert.True(dict.TryUpdate(1, new Struct16(2, -2), new Struct16(1, -1)), "TestTryUpdate: FAILED. TryUpdate failed for non atomic values ( > 8 bytes)");
}