adaptive sync

i3/scripts/freeze-toggle

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Freeze / resume the focused window's process tree (SIGSTOP / SIGCONT).
+pid=$(xdotool getactivewindow getwindowpid 2>/dev/null) || exit 1
+
+# collect pid plus all descendants (Wine/Proton games spawn several)
+descendants() {
+    local p
+    for p in $(pgrep -P "$1"); do
+        echo "$p"
+        descendants "$p"
+    done
+}
+pids="$pid $(descendants "$pid")"
+name=$(ps -o comm= -p "$pid")
+
+case "$(ps -o state= -p "$pid")" in
+    T*) kill -CONT $pids && notify-send -t 1500 "Resumed" "$name ($pid)" ;;
+    *)  kill -STOP $pids && notify-send -t 1500 "Frozen" "$name ($pid)" ;;
+esac