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Fixed a nasty bug that would corrupt the WeakCollection upon calling RemoveDeadItems()

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git-svn-id: file:///srv/devel/repo-conversion/nusu@194 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2010-04-16 10:26:06 +00:00
parent f0289632f6
commit a0a0b73a13
1 changed files with 7 additions and 12 deletions
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19
Source/Collections/WeakCollection.cs
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@ -311,25 +311,20 @@ namespace Nuclex.Support.Collections {
/// Removes the items that have been garbage collected from the collection
/// </summary>
public void RemoveDeadItems() {
int eliminatedItemCount = 0;
int newCount = 0;
// Eliminate all items that have been garbage collected by shifting
for(int index = 0; index + eliminatedItemCount < this.items.Count; ++index) {
if(!this.items[index].IsAlive) {
++eliminatedItemCount;
} else {
this.items[index] = this.items[index + eliminatedItemCount];
++index;
for(int index = 0; index < this.items.Count; ++index) {
if(this.items[index].IsAlive) {
this.items[newCount] = this.items[index];
++newCount;
}
}
// If any garbage collected items were found, resize the collection so
// the space that became empty in the previous shifting process will be freed
if(eliminatedItemCount > 0) {
int endIndex = this.items.Count - eliminatedItemCount;
for(int index = this.items.Count - 1; index >= endIndex; --index) {
this.items.RemoveAt(index);
}
while(this.items.Count > newCount) {
this.items.RemoveAt(this.items.Count - 1);
}
}