Improve macOS updater (#5064)

* Fix macOS Updater (once again)

* Also fix my brain's issues

* Move set -e that lsof doesn't trigger exit 1

* Resolve yesterdays brain malfunction 2

* Revert "Move set -e that lsof doesn't trigger exit 1"

This reverts commit 589a630610fff26f6a549d82c73be61b74187327.

* Also check if PID exists

* Remove lsof and instead check for running processes

* Remove empty lines

* Increase max iterations

* Address feedback

* Remove obsolete check for child processes

* Update comments

* Update comments

* I swear this is the last commit

* lsof + ps check

distribution/macos/updater.sh

@@ -25,14 +25,27 @@ error_handler() {
     exit 1
 }
 
-# Wait for Ryujinx to exit
-# NOTE: in case no fds are open, lsof could be returning with a process still living.
-# We wait 1s and assume the process stopped after that
-lsof -p $APP_PID +r 1 &>/dev/null
-sleep 1
-
 trap 'error_handler ${LINENO}' ERR
 
+# Wait for Ryujinx to exit.
+# If the main process is still acitve, we wait for 1 second and check it again.
+# After the fifth time checking, this script exits with status 1.
+
+attempt=0
+while true; do
+    if lsof -p $APP_PID +r 1 &>/dev/null || ps -p "$APP_PID" &>/dev/null; then
+        if [ "$attempt" -eq 4 ]; then
+            exit 1
+        fi
+        sleep 1
+    else
+        break
+    fi
+    (( attempt++ ))
+done
+
+sleep 1
+
 # Now replace and reopen.
 rm -rf "$INSTALL_DIRECTORY"
 mv "$NEW_APP_DIRECTORY" "$INSTALL_DIRECTORY"