Lua Stack overflow

[BrunoLevy]

Under some circumstances, Graphite crashes with a Lua stack overflow. There may be an event handler that enters an infinite recursion. It happens after a looong time though. To reproduce, start Graphite, open the preference windows, and leave the cursor over it.

[BrunoLevy]

Error log:

| o-[Lua         ] Error: /home/blevy/Programming/GraphiteThree/lib/camera.lua |
|                  :193: stack overflow                                        |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/camera.lua |
|                  :193: stack overflow                                        |
|                  Error: stack overflow                                       |
|                  Error: stack overflow                                       |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:38: stack overflow                                        |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:38: stack overflow                                        |
|                  Error: .../blevy/Programming/GraphiteThree/lib/graphite_com |
|                  mon.lua:31: stack overflow                                  |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:284: stack overflow                                       |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:284: stack overflow                                       |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:1211: stack overflow                                      |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:1211: stack overflow                                      |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:1211: stack overflow                                      |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/autogui.lu |
|                  a:1254: stack overflow                                      |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: /home/blevy/Programming/GraphiteThree/lib/scene_grap |
|                  h.lua:467: stack overflow                                   |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:73: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:45: stack overflow                                  |
|                  Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_im |
|                  gui.lua:89: stack overflow                                  |
Error while displaying error (!):                 Error: ...e/blevy/Programming/GraphiteThree/lib/graphite_imgui.lua:89: stack overflow
stack overflow

|                  Error: stack overflow                                       |
Error while displaying error (!):                 Error: stack overflow
stack overflow

|                  Error: stack overflow                                       |
Error while displaying error (!):                 Error: stack overflow
stack overflow

|                  Error: stack overflow                                       |
Error while displaying error (!):                 Error: stack overflow
stack overflow

|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
|                  Error: error in error handling                              |
Error while displaying error (!):                 Error: error in error handling
error in error handling

|                  Error: error in error handling                              |
Error while displaying error (!):                 Error: error in error handling
error in error handling

|                  Error: error in error handling                              |
Error while displaying error (!):                 Error: error in error handling
error in error handling

|                  Error: error in error handling                              |
Error while displaying error (!):                 Error: error in error handling
error in error handling

|                  Error: error in error handling                              |

[BrunoLevy]

Added a lock in graphite_gui.draw() to avoid recursive invocation (in lib/graphite_imgui.lua)

[BrunoLevy]

Problem still occurs sometimes (and since it is after a loooonnnng time, it is hard to reproduce / hard to debug)

[BrunoLevy]

• could not reproduce the problem
• it may be connected with the "histogram window" wanting to refresh the histogram too often. It may be the way to go to investigate the problem (if it is the same problem), because it is easier to reprodcue.