Methods and systems for saving data potentially modified by a crashed computer program executing in a preemptive multitasking operating system environment

摘要: The present invention is directed toward creating backup copies of previously saved data before it modified by a crashed computer program executing in preemptive multitasking operating system environment. advantageous that protects against loss and corruption caused calls issued malfunctioning, programs. A method accordance with the comprises steps of: (a) monitoring made program; (b) intercepting selected group they are executed an system; (c) logging subset intercepted memory; (d) potentially further calls; (e) passing to system. In one embodiment invention, stored files extracted from appended undo file. another directly files.