public HexCachedBufferStreamImpl(HexSimpleBufferStream simpleStream, bool disposeStream) {
if (simpleStream == null)
throw new ArgumentNullException(nameof(simpleStream));
this.simpleStream = simpleStream;
this.disposeStream = disposeStream;
pageSize = simpleStream.PageSize;
Debug.Assert(pageSize == 0 || IsPowerOfTwo(pageSize));
if (pageSize == 0 || !IsPowerOfTwo(pageSize))
pageSize = DEFAULT_PAGE_SIZE;
if (pageSize > MAX_PAGE_SIZE)
pageSize = MAX_PAGE_SIZE;
Debug.Assert(pageSize >= MIN_PAGE_SIZE);
if (pageSize < MIN_PAGE_SIZE)
pageSize = MIN_PAGE_SIZE;
Debug.Assert(IsPowerOfTwo(pageSize));
pageSizeMask = pageSize - 1;
int numCachedPages = (int)((CACHE_SIZE + pageSizeMask) / pageSize);
cachedPages = new CachedPage[numCachedPages];
for (int i = 0; i < cachedPages.Length; i++)
cachedPages[i] = new CachedPage(i, (int)pageSize);
}
/// <summary> /// Creates a <see cref="HexBufferStream"/> /// </summary> /// <param name="simpleStream">Underlying stream</param> /// <param name="disposeStream">true if the returned stream owns <paramref name="simpleStream"/> and /// disposes it when the returned stream gets disposed</param> /// <returns></returns> public abstract HexCachedBufferStream CreateCached(HexSimpleBufferStream simpleStream, bool disposeStream);
/// <summary> /// Creates a <see cref="HexBufferStream"/> /// </summary> /// <param name="simpleStream">Underlying stream</param> /// <param name="disposeStream">true if the returned stream owns <paramref name="simpleStream"/> and /// disposes it when the returned stream gets disposed</param> /// <returns></returns> public abstract HexCachedBufferStream CreateCached(HexSimpleBufferStream simpleStream, bool disposeStream);
protected override void DisposeCore() {
if (disposeStream)
simpleStream?.Dispose();
simpleStream = null;
}
public override HexCachedBufferStream CreateCached(HexSimpleBufferStream simpleStream, bool disposeStream) {
if (simpleStream == null)
throw new ArgumentNullException(nameof(simpleStream));
return new HexCachedBufferStreamImpl(simpleStream, disposeStream);
}
