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);
}
private static void UpdateScrollBarStyles(FrameworkElement element)
{
if (element is null)
{
throw new ArgumentNullException(nameof(element));
}
var themeScrollBars = GetThemeScrollBars(element);
if (themeScrollBars.HasValue)
{
SetScrollBarStyles(element, themeScrollBars.Value);
if (themeScrollBars.Value)
{
WeakUnthemedScrollingElements.Remove(element);
}
else
{
WeakUnthemedScrollingElements.Add(element);
}
}
else
{
RemoveScrollBarStyles(element);
WeakUnthemedScrollingElements.Remove(element);
}
}
public void RemoveWorks()
{
var arr = new[] { "a", "b", "c", "d", "c" };
var wc = new WeakCollection <string>(arr);
Assert.True(wc.Remove("c"));
Assert.True(wc.OrderBy(x => x).SequenceEqual(new[] { "a", "b", "c", "d" }));
Assert.True(wc.Remove("c"));
Assert.True(wc.OrderBy(x => x).SequenceEqual(new[] { "a", "b", "d" }));
Assert.False(wc.Remove("c"));
Assert.True(wc.OrderBy(x => x).SequenceEqual(new[] { "a", "b", "d" }));
}
public void RemoveWorksAfterCollect()
{
var arr = new[] { "a", "b" };
var wc = new WeakCollection <string>(arr);
{
wc.Add(new string('c', 1));
wc.Add(new string('d', 1));
wc.Add(new string('c', 1));
}
GCEx.CollectAndWait();
Assert.False(wc.Remove("c"));
Assert.False(wc.Remove("d"));
Assert.True(wc.SequenceEqual(new[] { "a", "b" }));
}
/// <summary>
/// Unregisters the specified resource pool.
/// </summary>
/// <param name="pool">The resource pool to unregister.</param>
internal static void Unregister(ResourcePool pool)
{
lock (PoolsInternal)
{
PoolsInternal.Remove(pool);
}
}
public void WeakCollection()
{
"添加元素，但只有 1 个被强引用，于是 GC 后只剩 1 个元素。".Test(() =>
{
// Arrange
var collection = new WeakCollection <object>();
// Action
collection.Add(new object());
var a = new object();
collection.Add(a);
GC.Collect();
// Assert
Assert.AreEqual(1, collection.TryGetItems(x => true).Length);
});
"移除元素，被强引用的元素也被移除，于是 GC 后没有元素了。".Test(() =>
{
// Arrange
var collection = new WeakCollection <object>();
// Action
collection.Add(new object());
var a = new object();
collection.Add(a);
collection.Remove(a);
GC.Collect();
// Assert
Assert.AreEqual(0, collection.TryGetItems(x => true).Length);
});
}
public void WeakCollection()
{
"添加元素，但只有 1 个被强引用，于是 GC 后只剩 1 个元素。".Test(() =>
{
// Arrange
var collection = new WeakCollection <object>();
// Action
AddNewObject(collection);
var a = AddNewObjectAndReturn(collection);
GC.Collect();
// Assert
Assert.AreEqual(1, collection.TryGetItems(x => true).Length);
// 必须在验证之后再使用一下变量，否则可能被提前回收。
Console.WriteLine(a);
});
"移除元素，被强引用的元素也被移除，于是 GC 后没有元素了。".Test(() =>
{
// Arrange
var collection = new WeakCollection <object>();
// Action
AddNewObject(collection);
var a = AddNewObjectAndReturn(collection);
collection.Remove(a);
GC.Collect();
// Assert
Assert.AreEqual(0, collection.TryGetItems(x => true).Length);
});
}
public void BucketInCollectionReusedAfterRemove()
{
var _0 = new object();
var _1 = new object();
var _2 = new object();
_collection.Add(_0);
_collection.Add(_1);
_collection.Add(_2);
GC.Collect();
_collection.Remove(_0);
_collection.Remove(_1);
_collection.Add(new object());
Assert.Equal(3, _collection.Size);
Assert.Equal(2, _collection.Count());
}
/// <inheritdoc/>
protected override void Dispose(bool disposing, bool disposeData)
{
if (!IsDisposed)
{
if (disposing)
{
InvalidateViewDependentData();
// Unregister camera node from global list.
Instances.Remove(this);
}
base.Dispose(disposing, disposeData);
}
}
internal void Remove(ScaledTexture scaledTexture, Texture2D texture)
{
try {
lock (texture.Meta()) {
var Map = texture.Meta().SpriteTable;
using (Lock.Exclusive) {
try {
ScaledTextureReferences.Purge();
var removeElements = new List <ScaledTexture>();
foreach (var element in ScaledTextureReferences)
{
if (element == scaledTexture)
{
removeElements.Add(element);
}
}
foreach (var element in removeElements)
{
ScaledTextureReferences.Remove(element);
}
}
catch { }
Map.Clear();
}
}
}
finally {
if (scaledTexture.Texture != null && !scaledTexture.Texture.IsDisposed)
{
Debug.TraceLn($"Disposing Active HD Texture: {scaledTexture.SafeName()}");
//scaledTexture.Texture.Dispose();
}
}
}
private void Unsubscribe(IObserver <T> observer)
{
lock (_gate)
_observers?.Remove(observer);
}
public static void UnregisterMainToolBarTray(ToolBarTray tray)
{
MainToolBarTrays.Remove(tray);
}
