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| From: | YAMAMOTO Mitsuharu |
| Subject: | bug#65193: 29.1.50; SET_FRAME_ICONIFIED can cause Lisp evaluation inside read_socket_hook. |
| Date: | Fri, 11 Aug 2023 01:33:41 +0900 |
| User-agent: | Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (Gojō) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) |
Another problem specific to the NS port w.r.t. the call to
gui_consider_frame_title from SET_FRAME_ICONIFIED is that it can
also be called inside the select emulation via -[EmacsView
windowDidDeminiaturize:] for example.
With multiple Lisp threads, select causes thread switching. So, Lisp
evaluations can simultaneously happen both on the main thread (via
-[EmacsView windowDidDeminiaturize:]) and on another Lisp thread.
This breaks the cooperative nature of the Emacs threads.
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
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