Re: [Gems-users] addLogEntry and addMagicEntry

[Jayaram Bobba <bobba@xxxxxxxxxxx>]

Hi James

addLogEntry creates the undo log entry when a transactional store is 
completed.
addMagicEntry is a simulation artifact. When a transactional store needs 
to be
'aborted', we unstall simics and allow it to complete the store. 
However, we make
note of it in a 'Magic' entry and then unroll the store two cycles 
later. It is an ugly
hack. In our current code, we have worked around it by raising an exception
instead, on the aborted store. You can use the 'exception' field in 
generic_transaction_t
to do this.

regards
Jayaram

James Wang wrote:
> Hi All:
>     I am reading the LogTM source code, and in the
> TransactionLog class, there are two methods:
> addLogEntry and addMagicEntry. How do these two
> methods differ? What is a magic entry?
>     Thanks in advance.
>
>
> Regards
> James
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