Abstract: A method can include receiving navigational debug input from a debugger interface including input to traverse input code in a plurality of modes; in response to receiving the navigational debug input, a) saving state of a program being executed in a corresponding debugger, including creating a child process from a currently executing process, and b) executing a portion of the program, wherein executing the portion of the program comprises suspending the created child process, and continuing to execute the currently executing process; receiving input to reverse execution of the portion of the program; and restoring the saved state of the program, wherein restoring the saved state of the program comprises suspending the currently executing process and activating the suspended child process. The navigation input can include input to single-step, step over a function, step into a function or set a breakpoint in programming code running within the corresponding debugger.

Abstract: A method can include receiving navigational debug input from a debugger interface including input to traverse input code in a plurality of modes; in response to receiving the navigational debug input, a) saving state of a program being executed in a corresponding debugger, including creating a child process from a currently executing process, and b) executing a portion of the program, wherein executing the portion of the program comprises suspending the created child process, and continuing to execute the currently executing process; receiving input to reverse execution of the portion of the program; and restoring the saved state of the program, wherein restoring the saved state of the program comprises suspending the currently executing process and activating the suspended child process. The navigation input can include input to single-step, step over a function, step into a function or set a breakpoint in programming code running within the corresponding debugger.