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authorTomas Janousek <tomi@nomi.cz>2022-02-17 14:56:49 +0000
committerTomas Janousek <tomi@nomi.cz>2022-02-17 17:42:27 +0000
commitb3249613e36d1909b1ecab867b4c556284f70362 (patch)
treeddb782292bf8e2d13a3efee79d2de9202b2a846c /.github/workflows/haskell.yml
parentbfd02987485210646800f4184a21b1143f2e301c (diff)
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Fix memory leak in drawInWin
In f8c835a33a7a, I flipped the discard flag to XSync to False on a false assumption that it may discard events from under the eventer thread (since renamed to handleXEvent). This can't happen—the eventer thread and the main loop do not share a Display connection, they have two separate ones. Turns out, the main loop doesn't read/process any events from its Display connection, which is why it was necessary to discard them once in a while. The fix restores that discarding, adds a comment to explain why that discarding should stay, and just to make things a bit cleaner, also prevents some of those events from being emitted in the first place: by configuring the graphics context that we don't want any exposure events (https://tronche.com/gui/x/xlib/events/exposure/graphics-expose-and-no-expose.html). Fixes: f8c835a33a7a ("Fix delayed reaction to USR1/2 signals")
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