public object Set([NotNull] string key, IEntryLink link, object state, [NotNull] Func <ICacheSetContext, object> create) { CheckDisposed(); CacheEntry priorEntry = null; var now = _clock.UtcNow; var context = new CacheSetContext(key) { State = state, CreationTime = now }; object value = create(context); var entry = new CacheEntry(context, value, _entryExpirationNotification); bool added = false; if (link != null) { // Copy triggers and AbsoluteExpiration to the link. // We do this regardless of it gets cached because the triggers are associated with the value we'll return. if (entry.Context.Triggers != null) { link.AddExpirationTriggers(entry.Context.Triggers); } if (entry.Context.AbsoluteExpiration.HasValue) { link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value); } } _entryLock.EnterWriteLock(); try { if (_entries.TryGetValue(key, out priorEntry)) { _entries.Remove(key); priorEntry.SetExpired(EvictionReason.Replaced); } if (!entry.CheckExpired(now)) { _entries[key] = entry; entry.AttachTriggers(); added = true; } } finally { _entryLock.ExitWriteLock(); } if (priorEntry != null) { priorEntry.InvokeEvictionCallbacks(); } if (!added) { entry.InvokeEvictionCallbacks(); } StartScanForExpiredItems(); return(value); }
public bool TryGetValue([NotNull] string key, IEntryLink link, out object value) { value = null; CacheEntry expiredEntry = null; bool found = false; CheckDisposed(); _entryLock.EnterReadLock(); try { CacheEntry entry; if (_entries.TryGetValue(key, out entry)) { // Check if expired due to triggers, timers, etc. and if so, remove it. if (entry.CheckExpired(_clock.UtcNow)) { expiredEntry = entry; } else { // Refresh sliding expiration, etc. entry.LastAccessed = _clock.UtcNow; value = entry.Value; found = true; if (link != null) { // Copy triggers and AbsoluteExpiration to the link if (entry.Context.Triggers != null) { link.AddExpirationTriggers(entry.Context.Triggers); } if (entry.Context.AbsoluteExpiration.HasValue) { link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value); } } } } } finally { _entryLock.ExitReadLock(); } if (expiredEntry != null) { // TODO: For efficiency queue this up for batch removal RemoveEntry(expiredEntry); } StartScanForExpiredItems(); return(found); }
private void SetInternal(CacheSetContext context, IEntryLink link, object value) { CacheEntry priorEntry = null; var entry = new CacheEntry(context, value, _entryExpirationNotification); bool added = false; if (link != null) { // Copy triggers and AbsoluteExpiration to the link. // We do this regardless of it gets cached because the triggers are associated with the value we'll return. if (entry.Context.Triggers != null) { link.AddExpirationTriggers(entry.Context.Triggers); } if (entry.Context.AbsoluteExpiration.HasValue) { link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value); } } _entryLock.EnterWriteLock(); try { if (_entries.TryGetValue(context.Key, out priorEntry)) { _entries.Remove(context.Key); priorEntry.SetExpired(EvictionReason.Replaced); } if (!entry.CheckExpired(context.CreationTime)) { _entries[context.Key] = entry; entry.AttachTriggers(); added = true; } } finally { _entryLock.ExitWriteLock(); } if (priorEntry != null) { priorEntry.InvokeEvictionCallbacks(); } if (!added) { entry.InvokeEvictionCallbacks(); } StartScanForExpiredItems(); }
public bool TryGetValue([NotNull] string key, IEntryLink link, out object value) { value = null; CacheEntry expiredEntry = null; bool found = false; CheckDisposed(); _entryLock.EnterReadLock(); try { CacheEntry entry; if (_entries.TryGetValue(key, out entry)) { // Check if expired due to triggers, timers, etc. and if so, remove it. if (entry.CheckExpired(_clock.UtcNow)) { expiredEntry = entry; } else { // Refresh sliding expiration, etc. entry.LastAccessed = _clock.UtcNow; value = entry.Value; found = true; if (link != null) { // Copy triggers and AbsoluteExpiration to the link if (entry.Context.Triggers != null) { link.AddExpirationTriggers(entry.Context.Triggers); } if (entry.Context.AbsoluteExpiration.HasValue) { link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value); } } } } } finally { _entryLock.ExitReadLock(); } if (expiredEntry != null) { // TODO: For efficiency queue this up for batch removal RemoveEntry(expiredEntry); } StartScanForExpiredItems(); return found; }
public object Set([NotNull] string key, IEntryLink link, object state, [NotNull] Func<ICacheSetContext, object> create) { CheckDisposed(); CacheEntry priorEntry = null; var now = _clock.UtcNow; var context = new CacheSetContext(key) { State = state, CreationTime = now }; object value = create(context); var entry = new CacheEntry(context, value, _entryExpirationNotification); bool added = false; if (link != null) { // Copy triggers and AbsoluteExpiration to the link. // We do this regardless of it gets cached because the triggers are associated with the value we'll return. if (entry.Context.Triggers != null) { link.AddExpirationTriggers(entry.Context.Triggers); } if (entry.Context.AbsoluteExpiration.HasValue) { link.SetAbsoluteExpiration(entry.Context.AbsoluteExpiration.Value); } } _entryLock.EnterWriteLock(); try { if (_entries.TryGetValue(key, out priorEntry)) { _entries.Remove(key); priorEntry.SetExpired(EvictionReason.Replaced); } if (!entry.CheckExpired(now)) { _entries[key] = entry; entry.AttachTriggers(); added = true; } } finally { _entryLock.ExitWriteLock(); } if (priorEntry != null) { priorEntry.InvokeEvictionCallbacks(); } if (!added) { entry.InvokeEvictionCallbacks(); } StartScanForExpiredItems(); return value; }