public void SetLength(CachedStream owner, long length)
{
IntArrayList obsoleteOffsets = null;
try
{
if (owner.Length > length)
{
foreach (CachedPage page in _pagesCache)
{
if (Object.ReferenceEquals(page.Owner, owner))
{
if (page.Offset >= length)
{
if (obsoleteOffsets == null)
{
obsoleteOffsets = IntArrayListPool.Alloc();
}
obsoleteOffsets.Add((int)(page.Offset >> CachedPage._pageShiftBits));
page.ClearDirty();
if (_lastAccessedPage != null && _lastAccessedPage.Offset == page.Offset)
{
_lastAccessedPage = null;
}
}
else if (page.Offset + page.Size > length)
{
int newSize = (int)(length - page.Offset);
if (newSize != page.Size)
{
page.Size = newSize;
page.SetDirty();
}
}
}
}
if (obsoleteOffsets != null)
{
_searchKey._owner = owner;
for (int i = 0; i < obsoleteOffsets.Count; ++i)
{
_searchKey._offset = obsoleteOffsets[i];
_pagesCache.Remove(_searchKey);
}
}
}
owner.SetLengthImpl(length);
}
finally
{
owner.GetUnderlyingStream().SetLength(length);
if (obsoleteOffsets != null)
{
IntArrayListPool.Dispose(obsoleteOffsets);
}
}
}
public void Flush(CachedStream owner)
{
if (_dirtyPages.Count > 0)
{
if (_dirtyPages.Count == 1)
{
foreach (HashSet.Entry e in _dirtyPages)
{
CachedPageKey key = (CachedPageKey)e.Key;
if (Object.ReferenceEquals(key._owner, owner))
{
((CachedPage)_pagesCache.TryKey(key)).Save();
}
}
}
else
{
IntArrayList pageOffsets = IntArrayListPool.Alloc();
try
{
foreach (HashSet.Entry e in _dirtyPages)
{
CachedPageKey key = (CachedPageKey)e.Key;
if (Object.ReferenceEquals(key._owner, owner))
{
pageOffsets.Add(key._offset);
}
}
pageOffsets.Sort();
_searchKey._owner = owner;
for (int i = 0; i < pageOffsets.Count; ++i)
{
_searchKey._offset = pageOffsets[i];
((CachedPage)_pagesCache.TryKey(_searchKey)).Save();
}
}
finally
{
IntArrayListPool.Dispose(pageOffsets);
}
}
}
if (owner.GetUnderlyingStream().CanWrite)
{
owner.GetUnderlyingStream().Flush();
}
}
public override void Flush()
{
if (_dirtyClusters.Count > 0)
{
IntArrayList handles = IntArrayListPool.Alloc();
try
{
foreach (IntHashSet.Entry e in _dirtyClusters)
{
handles.Add(e.Key);
}
for (int i = 0; i < handles.Count; ++i)
{
((Cluster)_clusterCache.TryKey(handles[i])).SaveHeader();
}
}
finally
{
IntArrayListPool.Dispose(handles);
}
_stream.Flush();
}
}
public void Flush(CachedStream owner)
{
if (_dirtyPages.Count > 0)
{
if (_dirtyPages.Count == 1)
{
foreach (IntHashSet.Entry e in _dirtyPages)
{
((CachedPage)_pagesCache.TryKey(e.Key)).Save();
}
}
else
{
IntArrayList pageOffsets = IntArrayListPool.Alloc();
try
{
foreach (IntHashSet.Entry e in _dirtyPages)
{
pageOffsets.Add(e.Key);
}
pageOffsets.Sort();
for (int i = 0; i < pageOffsets.Count; ++i)
{
((CachedPage)_pagesCache.TryKey(pageOffsets[i])).Save();
}
}
finally
{
IntArrayListPool.Dispose(pageOffsets);
}
}
}
if (owner.GetUnderlyingStream().CanWrite)
{
owner.GetUnderlyingStream().Flush();
}
}
