protected override void ClearCore(bool disposing)
{
_lock.EnterWriteLock();
try
{
foreach (var entry in _entries)
{
if (entry.Key.TryGetTarget(out T key))
{
_cache.Remove(key);
}
}
_entries.Clear();
#if DEBUG
_invocationCount = 0;
_accessCount = 0;
_evictionCount = 0;
_trimCount = 0;
_trimElapsed = TimeSpan.Zero;
_lastEvicted = null;
#endif
}
finally
{
_lock.ExitWriteLock();
}
}
private void Trim()
{
if (_cache.Count >= _maxCapacity)
{
#if DEBUG
var trimStart = _stopwatch.ElapsedTicks;
#endif
#pragma warning disable IDE0079 // Remove unnecessary suppression.
#pragma warning disable IDE0063 // Use simple 'using' statement. (Only in RELEASE build.)
using (var evictionOrder = _ranker.GetEnumerator())
{
while (_cache.Count >= _maxCapacity && evictionOrder.MoveNext())
{
var entry = evictionOrder.Current;
#if DEBUG
_lastEvicted = entry;
#endif
_cache.Remove(entry.Key);
#if DEBUG
_evictionCount++;
#endif
}
}
#pragma warning restore IDE0063
#pragma warning restore IDE0079
#if DEBUG
var trimElapsed = new TimeSpan(_stopwatch.ElapsedTicks - trimStart);
_trimCount++;
_trimElapsed += trimElapsed;
#endif
}
}
protected override void ClearCore(bool disposing)
{
_cache.Clear();
#if DEBUG
_invocationCount = 0;
_accessCount = 0;
_evictionCount = 0;
_trimCount = 0;
_trimElapsed = TimeSpan.Zero;
_lastEvicted = null;
#endif
}
private void Trim()
{
//
// NB: We can have temporary oversubscription during concurrent accesses because we avoid to enter the write lock
// until absolutely necessary, so _entries.Count can be a dirty read.
//
if (_entries.Count >= _maxCapacity)
{
#if DEBUG
var trimStart = _stopwatch.ElapsedTicks;
#endif
_lock.EnterWriteLock();
try
{
using (var evictionOrder = _ranker.GetEnumerator())
{
while (_entries.Count >= _maxCapacity && evictionOrder.MoveNext())
{
var entry = evictionOrder.Current;
#if DEBUG
_lastEvicted = entry;
#endif
if (entry.Key.TryGetTarget(out T key))
{
_cache.Remove(key);
}
_entries.Remove(entry);
#if DEBUG
_evictionCount++;
#endif
}
}
_entries.RemoveWhere(e => !e.Key.TryGetTarget(out _));
}
finally
{
_lock.ExitWriteLock();
}
#if DEBUG
var trimElapsed = new TimeSpan(_stopwatch.ElapsedTicks - trimStart);
_trimCount++;
_trimElapsed += trimElapsed;
#endif
}
}
