private bool Read(PageCursor cursor, int offset, GSP into)
{
cursor.Offset = offset;
into.Generation = GenerationSafePointer.ReadGeneration(cursor);
into.Pointer = GenerationSafePointer.ReadPointer(cursor);
return(GenerationSafePointer.VerifyChecksum(cursor, into.Generation, into.Pointer));
}
private static long ReadSlot(PageCursor cursor)
{
long generation = GenerationSafePointer.ReadGeneration(cursor);
long pointer = GenerationSafePointer.ReadPointer(cursor);
short checksum = GenerationSafePointer.ReadChecksum(cursor);
assertEquals(GenerationSafePointer.ChecksumOf(generation, pointer), checksum);
return(pointer);
}
internal virtual void Write(PageCursor cursor, long unstableGeneration, long pageId, int pos)
{
if (pageId == NoPageId)
{
throw new System.ArgumentException("Tried to write pageId " + pageId + " which means null");
}
AssertPos(pos);
GenerationSafePointer.AssertGenerationOnWrite(unstableGeneration);
cursor.Offset = EntryOffset(pos);
cursor.PutInt(( int )unstableGeneration);
put6BLong(cursor, pageId);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void checkSiblingShouldThrowOnReadIllegalPointer()
internal virtual void CheckSiblingShouldThrowOnReadIllegalPointer()
{
// GIVEN
long generation = IdSpace.STATE_PAGE_A;
long pointer = this._secondGeneration;
// Can not use GenerationSafePointer.write because it will fail on pointer assertion.
_cursor.putInt(( int )pointer);
put6BLong(_cursor, generation);
_cursor.putShort(GenerationSafePointer.ChecksumOf(generation, pointer));
_cursor.rewind();
// WHEN
long result = read(_cursor, _firstGeneration, pointer, NO_GENERATION_TARGET);
assertThrows(typeof(TreeInconsistencyException), () => PointerChecking.checkPointer(result, true));
}
public static long ReadGeneration(Org.Neo4j.Io.pagecache.PageCursor cursor, bool slotA)
{
cursor.Offset = slotA ? SLOT_A_OFFSET : SLOT_B_OFFSET;
return(GenerationSafePointer.ReadGeneration(cursor));
}
private static short ChecksumOf(GSP gsp)
{
return(GenerationSafePointer.ChecksumOf(gsp.Generation, gsp.Pointer));
}
private void Write(PageCursor cursor, int offset, GSP gsp)
{
cursor.Offset = offset;
GenerationSafePointer.Write(cursor, gsp.Generation, gsp.Pointer);
}
private static void OverwriteGSPP(PageCursor cursor, int gsppOffset, long generation, long pointer)
{
cursor.Offset = gsppOffset;
GenerationSafePointer.Write(cursor, generation, pointer);
GenerationSafePointer.Clean(cursor);
}
internal static void SetGeneration(PageCursor cursor, long generation)
{
GenerationSafePointer.AssertGenerationOnWrite(generation);
cursor.PutInt(BytePosGeneration, ( int )generation);
}
