public static int Compare(PrefixedSlice x, PrefixedSlice y, SliceComparer cmp, ushort size)
{
fixed(byte *p1 = x.NonPrefixedData.Array)
fixed(byte *p2 = y.NonPrefixedData.Array)
{
var xPtr = p1 != null ? p1 : x.NonPrefixedData.Pointer;
var yPtr = p2 != null ? p2 : y.NonPrefixedData.Pointer;
byte *xPre = null;
byte *yPre = null;
fixed(byte *pre1 = x.Prefix != null?x.Prefix.Value : null)
fixed(byte *pre2 = y.Prefix != null ? y.Prefix.Value : null)
{
if (x.Prefix != null)
{
xPre = pre1 != null ? pre1 : x.Prefix.ValuePtr;
}
if (y.Prefix != null)
{
yPre = pre2 != null ? pre2 : y.Prefix.ValuePtr;
}
return(Compare(xPre, x.Header.PrefixUsage, yPre, y.Header.PrefixUsage, xPtr, x.Header.NonPrefixedDataSize,
yPtr, y.Header.NonPrefixedDataSize, cmp, size));
}
}
}
public static int Compare(Slice x, PrefixedSlice y, SliceComparer cmp, ushort size)
{
fixed (byte* p1 = x.Array)
fixed (byte* p2 = y.NonPrefixedData.Array)
{
var xPtr = p1 != null ? p1 : x.Pointer;
var yPtr = p2 != null ? p2 : y.NonPrefixedData.Pointer;
if (y.Header.PrefixId == PrefixedSlice.NonPrefixedId)
return Compare(null, 0, null, 0, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size);
if (x.PrefixComparisonCache == null)
{
if(y.Prefix == null)
return Compare(null, 0, null, 0, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size);
else if (y.Prefix.Value == null)
return Compare(null, 0, y.Prefix.ValuePtr, y.Header.PrefixUsage, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size);
else
{
fixed (byte* prefixVal = y.Prefix.Value)
return Compare(null, 0, prefixVal, y.Header.PrefixUsage, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size);
}
}
var prefixBytesToCompare = Math.Min(y.Header.PrefixUsage, x.KeyLength);
int r;
if (x.PrefixComparisonCache.TryGetCachedResult(y.Header.PrefixId, y.Prefix.PageNumber, prefixBytesToCompare, out r) == false)
{
if (y.Prefix == null)
r = Compare(null, 0, null, 0, xPtr, x.KeyLength, null, 0, cmp,
prefixBytesToCompare);
else if (y.Prefix.Value == null)
r = Compare(null, 0, y.Prefix.ValuePtr, y.Header.PrefixUsage, xPtr, x.KeyLength, null, 0, cmp,
prefixBytesToCompare);
else
{
fixed (byte* prefixVal = y.Prefix.Value)
r = Compare(null, 0, prefixVal, y.Header.PrefixUsage, xPtr, x.KeyLength, null, 0, cmp,
prefixBytesToCompare);
}
x.PrefixComparisonCache.SetPrefixComparisonResult(y.Header.PrefixId, y.Prefix.PageNumber, prefixBytesToCompare, r);
}
if (r != 0)
return r;
size -= prefixBytesToCompare;
return Compare(null, 0, null, 0, xPtr + prefixBytesToCompare, (ushort)(x.KeyLength - prefixBytesToCompare), yPtr, y.Header.NonPrefixedDataSize, cmp, size);
}
}
public static int Compare(PrefixedSlice x, PrefixedSlice y, SliceComparer cmp, ushort size)
{
fixed (byte* p1 = x.NonPrefixedData.Array)
fixed (byte* p2 = y.NonPrefixedData.Array)
{
var xPtr = p1 != null ? p1 : x.NonPrefixedData.Pointer;
var yPtr = p2 != null ? p2 : y.NonPrefixedData.Pointer;
byte* xPre = null;
byte* yPre = null;
fixed (byte* pre1 = x.Prefix != null ? x.Prefix.Value : null)
fixed (byte* pre2 = y.Prefix != null ? y.Prefix.Value : null)
{
if(x.Prefix != null)
xPre = pre1 != null ? pre1 : x.Prefix.ValuePtr;
if (y.Prefix != null)
yPre = pre2 != null ? pre2 : y.Prefix.ValuePtr;
return Compare(xPre, x.Header.PrefixUsage, yPre, y.Header.PrefixUsage, xPtr, x.Header.NonPrefixedDataSize,
yPtr, y.Header.NonPrefixedDataSize, cmp, size);
}
}
}
public static int Compare(Slice x, PrefixedSlice y, SliceComparer cmp, ushort size)
{
fixed(byte *p1 = x.Array)
fixed(byte *p2 = y.NonPrefixedData.Array)
{
var xPtr = p1 != null ? p1 : x.Pointer;
var yPtr = p2 != null ? p2 : y.NonPrefixedData.Pointer;
if (y.Header.PrefixId == PrefixedSlice.NonPrefixedId)
{
return(Compare(null, 0, null, 0, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size));
}
if (x.PrefixComparisonCache == null)
{
if (y.Prefix == null)
{
return(Compare(null, 0, null, 0, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size));
}
else if (y.Prefix.Value == null)
{
return(Compare(null, 0, y.Prefix.ValuePtr, y.Header.PrefixUsage, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size));
}
else
{
fixed(byte *prefixVal = y.Prefix.Value)
return(Compare(null, 0, prefixVal, y.Header.PrefixUsage, xPtr, x.KeyLength, yPtr, y.Header.NonPrefixedDataSize, cmp, size));
}
}
var prefixBytesToCompare = Math.Min(y.Header.PrefixUsage, x.KeyLength);
int r;
if (x.PrefixComparisonCache.TryGetCachedResult(y.Header.PrefixId, y.Prefix.PageNumber, prefixBytesToCompare, out r) == false)
{
if (y.Prefix == null)
{
r = Compare(null, 0, null, 0, xPtr, x.KeyLength, null, 0, cmp,
prefixBytesToCompare);
}
else if (y.Prefix.Value == null)
{
r = Compare(null, 0, y.Prefix.ValuePtr, y.Header.PrefixUsage, xPtr, x.KeyLength, null, 0, cmp,
prefixBytesToCompare);
}
else
{
fixed(byte *prefixVal = y.Prefix.Value)
r = Compare(null, 0, prefixVal, y.Header.PrefixUsage, xPtr, x.KeyLength, null, 0, cmp,
prefixBytesToCompare);
}
x.PrefixComparisonCache.SetPrefixComparisonResult(y.Header.PrefixId, y.Prefix.PageNumber, prefixBytesToCompare, r);
}
if (r != 0)
{
return(r);
}
size -= prefixBytesToCompare;
return(Compare(null, 0, null, 0, xPtr + prefixBytesToCompare, (ushort)(x.KeyLength - prefixBytesToCompare), yPtr, y.Header.NonPrefixedDataSize, cmp, size));
}
}
