internal bool GetLogicalAddress(Key *key, out long logicalAddress)
{
var bucket = default(HashBucket *);
var slot = default(int);
logicalAddress = Constants.kInvalidAddress;
var physicalAddress = default(long);
var info = default(RecordInfo *);
var hash = Key.GetHashCode(key);
var tag = (ushort)((ulong)hash >> Constants.kHashTagShift);
var entry = default(HashBucketEntry);
var tagExists = FindTag(hash, tag, ref bucket, ref slot, ref entry);
if (tagExists)
{
logicalAddress = entry.word & Constants.kAddressMask;
Debug.Assert(logicalAddress != 0);
if (logicalAddress >= hlog.HeadAddress)
{
physicalAddress = hlog.GetPhysicalAddress(logicalAddress);
if (!Key.Equals(key, Layout.GetKey(physicalAddress)))
{
logicalAddress = Layout.GetInfo(physicalAddress)->PreviousAddress;
TraceBackForKeyMatch(key, logicalAddress, hlog.HeadAddress, out logicalAddress, out physicalAddress);
}
}
}
if (logicalAddress < hlog.HeadAddress && logicalAddress != Constants.kInvalidAddress)
{
return(false);
}
return(true);
}
