public override long Get6ByteLong(long index, int offset)
{
long pageId = pageId(index);
offset += offset(index);
try
{
using (PageCursor cursor = PagedFile.io(pageId, PF_SHARED_READ_LOCK))
{
cursor.Next();
long result;
do
{
long low4b = cursor.GetInt(offset) & 0xFFFFFFFFL;
long high2b = cursor.GetShort(offset + Integer.BYTES) & 0xFFFF;
result = low4b | (high2b << (sizeof(int) * 8));
} while (cursor.ShouldRetry());
CheckBounds(cursor);
return(result == 0xFFFFFFFFFFFFL ? -1 : result);
}
}
catch (IOException e)
{
throw new UncheckedIOException(e);
}
}
public override int Get3ByteInt(long index, int offset)
{
long pageId = pageId(index);
offset += offset(index);
try
{
using (PageCursor cursor = PagedFile.io(pageId, PF_SHARED_READ_LOCK))
{
cursor.Next();
int result;
do
{
int lowWord = cursor.GetShort(offset) & 0xFFFF;
int highByte = cursor.GetByte(offset + Short.BYTES) & 0xFF;
result = lowWord | (highByte << (sizeof(short) * 8));
} while (cursor.ShouldRetry());
CheckBounds(cursor);
return(result == 0xFFFFFF ? -1 : result);
}
}
catch (IOException e)
{
throw new UncheckedIOException(e);
}
}
public override short GetShort(long index, int offset)
{
long pageId = pageId(index);
offset += offset(index);
try
{
using (PageCursor cursor = PagedFile.io(pageId, PF_SHARED_READ_LOCK))
{
cursor.Next();
short result;
do
{
result = cursor.GetShort(offset);
} while (cursor.ShouldRetry());
CheckBounds(cursor);
return(result);
}
}
catch (IOException e)
{
throw new UncheckedIOException(e);
}
}