Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here.

View the Call Stack

The Call Stack window is used to display all currently running threads in a process.  It can be used  to identify which thread is operational immediately before program failure occurs.

When a Simulation is active, the Call Stack will show the current execution context for the running simulation. This will include a separate context stack for each concurrent simulation "thread".

A stack trace is displayed whenever a thread is suspended, through one of the step actions or through encountering a breakpoint. The Call Stack window can record a history of stack changes, and enables you to generate Sequence diagrams from this history.

Access     Analyzer | Call Stack

Use to

View stack history to understand the execution of a process
View threads
Save a call stack for later use
Record call stack changes for Sequence diagram generation
Generate a Sequence diagram from the call stack
View the related code line in the Source Code Editor




See also


A pink arrow highlights the current stack frame
A blue arrow indicates a thread that is running
A red arrow indicates a thread for which a stack trace history is being recorded



Save a Call Stack to a .TXT File

Not currently available.


Record a Thread in a Debug Session

To record the execution of a thread and direct the recording to the Record & Analyze window, right-click on the thread in the call stack and select the appropriate context menu option:

Record - to manually record the current thread during the debug session
Used in conjunction with the 'step' buttons of the debugger; each function that is called due to a step command is logged to the Record & Analyze window.


Auto-Record - to perform auto-recording during a debug session
When you select this icon, the Analyzer begins recording and does not stop until either the program ends, you stop the debugger or you click on the Stop icon.


The Recording History

Stop Recording

If you have started a manual or automatic recording of a thread you can stop it before completion; select the thread (indicated by a red arrow) and  either:

Click on the Stoprecordingicon (Stop Recording) button in the toolbar or
Right-click and select the Stop context menu option



Generate a Sequence Diagram from the Call Stack

To generate Sequence diagram from the call stack trace, either:

Click on the seqicon (Generate Sequence Diagram of Stack) button, or
Right-click and select the Generate Sequence Diagram context menu option


Create Sequence Diagram of Call Stack

Copy Stack to Recording History

To add the stack details immediately to the Record & Analyze window (for later generation of Sequence diagrams) either:

Click on the Copystackicon (Copy Stack to Recording History) button, or
Right-click and select the Copy Stack to Record History context menu option


The Recording History

Toggle Stack Depth

To toggle between showing the full stack and showing only frames with source, click on the VEA-StackToggle (Toggle Stack Depth) button.



Display Related Code in Source Code Editor


Double-click on a thread/frame to display the related line of code in the Source Code Editor; local variables are also refreshed for the selected frame.

Editing Source Code

Learn more