private Stream ReadBlobIntoPooledStream(SafeSqliteBlobHandle blob, int length)
{
var bytes = SQLitePersistentStorage.GetPooledBytes();
try
{
ThrowIfNotOk(NativeMethods.sqlite3_blob_read(blob, bytes, length, offset: 0));
// Copy those bytes into a pooled stream
return(SerializableBytes.CreateReadableStream(bytes, length));
}
finally
{
// Return our small array back to the pool.
SQLitePersistentStorage.ReturnPooledBytes(bytes);
}
}
private Stream ReadBlob(SafeSqliteBlobHandle blob)
{
var length = NativeMethods.sqlite3_blob_bytes(blob);
// If it's a small blob, just read it into one of our pooled arrays, and then
// create a PooledStream over it.
if (length <= SQLitePersistentStorage.MaxPooledByteArrayLength)
{
return(ReadBlobIntoPooledStream(blob, length));
}
else
{
// Otherwise, it's a large stream. Just take the hit of allocating.
var bytes = new byte[length];
ThrowIfNotOk(NativeMethods.sqlite3_blob_read(blob, bytes, length, offset: 0));
return(new MemoryStream(bytes));
}
}
