public void Clean()
{
var c = new WeakList <object>();
object x = new object();
using (NoGCRegion.Enter(1000)) {
AddCollectableItems(c, 3);
c.InsertFirst(x);
c.InsertAfter(x, x);
c.InsertBefore(x, x);
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(6, c.UnsafeCount);
Assert.IsTrue(c.Take(3).SequenceEqual(new[] { x, x, x }));
}
Helpers.CollectAndWait();
c.Clean();
Assert.AreEqual(0, c.AddCountSinceLastClean);
Assert.AreEqual(3, c.UnsafeCount);
c.Remove(x);
c.Remove(x);
Assert.AreEqual(1, c.UnsafeCount);
GC.KeepAlive(x);
}
public void EnumerationCleaning()
{
var c = new WeakCollection <object>();
object x = new object();
using (NoGCRegion.Enter(1000)) {
c.Add(x);
c.Add(x);
c.Add(x);
AddCollectableItems(c, 3);
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(6, c.UnsafeCount);
}
Helpers.CollectAndWait();
foreach (object o in c)
{
}
Assert.IsTrue(c.Remove(x));
Assert.IsTrue(c.Remove(x));
#if NETCOREAPP2_2 // NS2.0 target does not support removing stale entries as items are encountered.
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(4, c.UnsafeCount);
#else
Assert.AreEqual(0, c.AddCountSinceLastClean);
Assert.AreEqual(1, c.UnsafeCount);
#endif
GC.KeepAlive(x);
}
public void EnterNoGCRegionAndCollect()
{
var weakRef = Helpers.GetWeakRef();
using (NoGCRegion.Enter(1000)) { }
Helpers.CollectAndWait();
Assert.IsFalse(weakRef.TryGetTarget(out _));
}
public void EnumerationCleaning()
{
var c = new WeakValueDictionary <int, object>();
object x = new object();
using (NoGCRegion.Enter(1000)) {
c.Add(0, x);
c.Add(1, x);
c.Add(2, x);
AddCollectableItems(c, 3, 3);
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(6, c.UnsafeCount);
Assert.IsTrue(c.ContainsKey(1));
#if DEBUG || !NETFRAMEWORK // Causes entry with key 4 not to collection on NETFW release builds
Assert.IsTrue(c.ContainsKey(4));
#endif
}
Helpers.CollectAndWait();
Assert.IsTrue(c.ContainsKey(1));
Assert.IsFalse(c.ContainsKey(4));
foreach (object o in c)
{
}
Assert.IsTrue(c.Remove(0));
Assert.IsTrue(c.Remove(1));
Assert.IsFalse(c.Remove(4));
#if NETCOREAPP2_2 // NS2.0 target does not support removing stale entries as items are encountered.
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(4, c.UnsafeCount);
#else
Assert.AreEqual(0, c.AddCountSinceLastClean);
Assert.AreEqual(1, c.UnsafeCount);
#endif
GC.KeepAlive(x);
}
public void Clean()
{
var c = new WeakValueDictionary <int, object>();
object x = new object();
using (NoGCRegion.Enter(1000)) {
c.Add(0, x);
c.Add(1, x);
c.Add(2, x);
AddCollectableItems(c, 3, 3);
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(6, c.UnsafeCount);
}
Helpers.CollectAndWait();
c.Clean();
Assert.AreEqual(0, c.AddCountSinceLastClean);
Assert.AreEqual(3, c.UnsafeCount);
GC.KeepAlive(x);
}