public Result OperateRange(out QueryRangeInfo rangeInfo, int operationId, long offset, long size)
{
UnsafeHelpers.SkipParamInit(out rangeInfo);
rangeInfo.Clear();
if (operationId == (int)OperationId.InvalidateCache)
{
Result rc = BaseFile.OperateRange(Span <byte> .Empty, OperationId.InvalidateCache, offset, size,
ReadOnlySpan <byte> .Empty);
if (rc.IsFailure())
{
return(rc);
}
}
else if (operationId == (int)OperationId.QueryRange)
{
Unsafe.SkipInit(out QueryRangeInfo info);
Result rc = BaseFile.OperateRange(SpanHelpers.AsByteSpan(ref info), OperationId.QueryRange, offset, size,
ReadOnlySpan <byte> .Empty);
if (rc.IsFailure())
{
return(rc);
}
rangeInfo.Merge(in info);
}
return(Result.Success);
}
protected override Result DoOperateRange(Span <byte> outBuffer, OperationId operationId, long offset, long size, ReadOnlySpan <byte> inBuffer)
{
switch (operationId)
{
case OperationId.InvalidateCache:
return(BaseStorage.Target.OperateRange(out _, (int)OperationId.InvalidateCache, offset, size));
case OperationId.QueryRange:
if (outBuffer.Length != Unsafe.SizeOf <QueryRangeInfo>())
{
return(ResultFs.InvalidSize.Log());
}
ref QueryRangeInfo info = ref SpanHelpers.AsStruct <QueryRangeInfo>(outBuffer);
return(BaseStorage.Target.OperateRange(out info, (int)OperationId.QueryRange, offset, size));