Package ptolemy.backtrack

Backtracking mechanism for Ptolemy models.

See: Description

Interface Summary

Interface	Description
Rollbackable	The interface of rollbackable objects.

Class Summary

Class	Description
Checkpoint	The class of checkpoint objects.
CheckpointState	The current state of a checkpoint object.

Package ptolemy.backtrack Description

Backtracking mechanism for Ptolemy models.

These papers on backtracking maybe helpful:

Thomas Huining Feng and Edward A. Lee. "Incremental Checkpointing with Application to Distributed Discrete Event Simulation," in Winter Simulation Conference (WSC 2006), Monterey, CA, December 3-6, 2006, as well as an EECS Technical Report, UCB/EECS-2006-37, April 9, 2006.

Thomas Huining Feng, Edward A. Lee, "Implementation of Real-Time Distributed Discrete-Event Execution with Fault Tolerance," EECS Department, University of California, Berkeley, Technical Report No. UCB/EECS-2007-133, November 8, 2007.

http://www.eecs.berkeley.edu/~tfeng/backtrack.html - This is somewhat outdated. It still talks about AspectJ, which we experimented some time ago. We then moved to source-to-source transformation. The reason was that AspectJ didn't allow us to capture changes on some variables, such as individual elements of an array. By taking the source transformation approach, we have full control over the variables we need to keep track of.

Since:

Ptolemy II 6.1