PyAPI: unregister add-ons when exiting
This lets add-on authors avoid false positive leaks when exiting. In particular GPUShaders's although it applies to any PyObject that stores memory allocated by guarded-alloc. While this does add overhead on exit, on my system it's under 1/100th of a second with all addons enabled. See: T71362
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Notes:
blender-bot
2023-05-22 12:40:41 +02:00
Referenced by issue #87271, Use after free when using an addon deriving from ShaderNodeCustomGroup Referenced by issue #82675, "ImportError: sys.meta_path is None, Python is likely shutting down" on exit when built as a Python module Referenced by issue #77348, Blender LTS: Maintenance Task 2.83 Referenced by issue #71362, Memory leak if both a shader and an AddonPreferences class are used
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@ -86,6 +86,7 @@
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#ifdef WITH_PYTHON
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# include "BPY_extern.h"
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# include "BPY_extern_python.h"
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# include "BPY_extern_run.h"
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#endif
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#include "GHOST_C-api.h"
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@ -523,6 +524,14 @@ void WM_exit_ex(bContext *C, const bool do_python)
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}
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}
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#ifdef WITH_PYTHON
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/* Without this, we there isn't a good way to manage false-positive resource leaks
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* where a #PyObject references memory allocated with guarded-alloc, T71362.
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*
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* This allows add-ons to free resources when unregistered (which is good practice anyway). */
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BPY_run_string_eval(C, (const char *[]){"addon_utils", NULL}, "addon_utils.disable_all()");
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#endif
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BLI_timer_free();
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WM_paneltype_clear();
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