Method and apparatus for allowing restarted programs to use old process identification

An apparatus for restarting a checkpointed process, comprising;

• means for creating a process to form a restarted process of the checkpointed process;
• means for associating a new process identification for the restarted process;
• means for receiving an old process identification of the checkpointed process, the old process identification of the checkpointed process being a process identification for the checkpointed process prior to the checkpointed process being checkpointed;
• and
• means for associating the received old process identification of the checkpointed process with the new process identification for the restarted process, wherein the restarted process continues to use the old process identification of the checkpointed process to identify the restarted process notwithstanding that the restarted process has the new process identification associated therewith.

A computer program product, in a computer readable medium, for restarting a checkpointed process, comprising:

• instructions for creating a process to form a restarted process of the checkpointed process;
• instructions for associating a new process identification for the restarted process;
• instructions for receiving an old process identification of the checkpointed process, the old process identification of the checkpointed process being a process identification for the checkpointed process prior to the checkpointed process being checkpointed;
• and
• instruction for associating the received old process identification of the checkpointed process with the new process identification for the restarted process, wherein the restarted process continues to use the old process identification of the checkpointed process to identify the restarted process notwithstanding that the restarted process has the new process identification associated therewith.