UNDOING CHANGES MADE BY THREADS

摘要

Disclosed herein are a system, non-transitory computer readable medium, and method for recovering from an abnormal failure of a program. Changes made by a plurality of threads of the program are undone in a reverse order in which the changes were made.

主权项

1. A system comprising:
a computer program which upon execution generates log entries that specify changes made to memory locations by a plurality of threads spawning from the computer program, the log entries further to indicate when each thread obtained and released exclusive access to each memory location; a recovery module which upon execution instructs at least one processor to:
determine whether the computer program has ended abnormally; andundo changes to the memory locations in a reverse order in which the threads changed the memory locations while each thread had exclusive access to a given memory location.