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[Linux] show/hide emission hooks are never removed; verify clean exit

Abierto
#60 0 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
68/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Activo
Stack tecnológico
cpp, linux

Línea de trabajo

Start in src/platform/linux/window_manager_linux.cpp at InstallGlobalSwizzling(), comparing the show/hide hooks with the nearby focus-in/focus-out hooks. Trace where window_manager shuts down and verify the hook lifecycle there. Done means a nativeapi Flutter app exits cleanly on Linux under X11 and Wayland, including after closing a secondary window created through package:nativeapi/windowing.dart.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

bug

InstallGlobalSwizzling() in src/platform/linux/window_manager_linux.cpp adds show / hide emission hooks on GtkWidget with g_signal_add_emission_hook(), but doesn't keep the hook ids, so they are never removed. The focus-in/focus-out hooks next to them are removed properly.

window_manager had a similar never-removed button-press-event emission hook in its Linux plugin. Users reported crashes when the app exits, or when a secondary Flutter window closes: FlutterEngineRemoveView ... The implicit view cannot be removed, followed by an epoxy/GLX assertion. The hooks here pass no user data, so they probably can't use a freed plugin pointer, but that should be confirmed:

  • keep the hook ids and remove them when the manager shuts down
  • check that a Flutter app with nativeapi exits cleanly on Linux (X11 and Wayland), including after a secondary window created through package:nativeapi/windowing.dart is closed

Background:

  • leanflutter/window_manager#585: crash on exit on Fedora 44 KDE X11, from just having the plugin
  • leanflutter/window_manager#567: a PR that removes the emission hook on plugin dispose
Lenguaje dominante
C++
Estrellas
34
Forks
7
Merge medio
3 d 1 h
PR fusionados (30 d)
1

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