Reverse Debug and Live Recording

Reverse Debug and Live Recording are supported on the following platforms:

• Red Hat Linux (x86 and x64)
• SUSE Linux Enterprise Server (SLES) 12 SP2 (x64 only)

In addition, the following issues and restrictions apply:

Compiling and code generation restrictions

• To use the Live Recording functionality to create or view a live recording, compile the application for debugging.
• Reverse Debug and Live Recording are supported for generated code only, meaning .gnt, .so, and executable code but not .int code. You can reverse debug the .gnt code in a mixed application that contains both .gnt and .int code; however, reverse debugging stops when it reaches the .int code.

Additional considerations

• When reverse stepping, you are essentially rewinding a recording just as you might rewind a video while it is playing. You cannot change what was recorded. Therefore:
  • No I/O occurs, meaning that the screen is not updated, accept statements are not re-accepted, and files do not change.
  • You cannot move the execution point.
  • You cannot change the values of data items.
• Applications can run slower when reverse debugging, especially applications that call multiple programs.
• You might experience a significant time delay after launching the debug of a live recording and before the debug session begins.
• Live Recorder is not available while debugging.