public static LockData Create(long lockID)
{
LockData rlock = new LockData { LockID = lockID};
#if DEBUG
rlock.Timestamp = DateTimeOffset.Now;
#endif
return rlock;
}
public static LockData Create(long lockID)
{
LockData rlock = new LockData {
LockID = lockID
};
#if DEBUG
rlock.Timestamp = DateTimeOffset.Now;
#endif
return(rlock);
}
//
// Returns 0 if lock was not acquired because somebody else already holds it
// Else returns > 0
// Does NOT BLOCK
//
public long AcquireLock(string itemID)
{
if (string.IsNullOrEmpty(itemID))
{
throw new ArgumentException("itemID");
}
lock (m_locks)
{
if (this.GetLock(itemID) != null)
{
return(LockNotAcquired);
}
long lockID = this.NextLockID();
Debug.Assert(RecordItemLockTable.IsValidLockID(lockID));
m_locks[itemID] = LockData.Create(lockID);
return(lockID);
}
}
void ValidateLock(LockData? rLock, long lockID)
{
if (rLock == null)
{
throw new StoreException(StoreErrorNumber.ItemNotLocked);
}
if (!rLock.Value.IsLock(lockID))
{
throw new StoreException(StoreErrorNumber.ItemLockMismatch);
}
}
