| Revision History | ||
|---|---|---|
| Revision V7.1-002 | 19 September 2023 |
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| Revision V7.1-001 | 26 June 2023 |
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| Revision V6.3-007 | 04 February 2019 |
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| Revision V6.3-005 | 29 June 2018 |
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| Revision V6.3-003 | 12 December 2017 |
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| Revision V6.2-001 | 27 February 2015 | In “Line Editing”, added GT.M behavior for the Delete key and an example to modify terminfo capabilities. |
Contents
- Operating in Direct Mode
- Debugging a Routine in Direct Mode
- Creating and Displaying M Routines
- Executing M Routines Interactively
- Processing with Run-time and Syntax Errors
- Correcting Errors
- Stepping Through a Routine
- Continuing Execution From a Breakpoint
- Interrupting Execution
- Using the Invocation Stack in Debugging
- Transferring Routine Control
- Displaying Source Code
- Correcting Errors in an M Routine
- Relinking the Edited Routine
- Re-executing the Routine
- Using Forked Processes
- Summary of GT.M Debugging Tools
Direct Mode is an important tool in GT.M because it allows you to interactively debug, modify, and execute M routines. Direct Mode is a shell that immediately compiles and executes GT.M commands providing an interpretive-like interface. M simplifies debugging by using the same commands for debugging that are used for programming.
The focus of this chapter is to describe the debugging process in Direct Mode, and to illustrate the GT.M language extensions that enhance the process. Command functionality is described only in enough detail to illustrate why a particular command is useful for a debugging activity being described. If you have specific functionality questions about a command or variable, see the “Commands”, “Functions”, or “Intrinsic Special Variables” chapter.
It is also from Direct Mode that you activate GT.M tools used to create M source code. The interaction of M commands used for editing and compiling is described in greater detail within Chapter 3: “Development Cycle”.
