More updates to the watchdog.

scripts/i3_watchdog.sh

@@ -19,6 +19,7 @@ timeoutSeconds=2  # Consider i3 locked if it doesn't respond within 2 seconds
 pidFile="${HOME}/.config/i3/i3_watchdog.pid"
 logFile="/tmp/i38-i3-watchdog-${UID}.log"
 maxLogBytes=262144
+displayFailureLimit=3
 
 rotate_log() {
     local logSize
@@ -53,6 +54,20 @@ check_health() {
     fi
 }
 
+check_x_display() {
+    timeout 1 xdotool getmouselocation > /dev/null 2>&1
+}
+
+cleanup_pid_file() {
+    local recordedPid
+
+    [[ -r "$pidFile" ]] || return 0
+    read -r recordedPid < "$pidFile"
+    if [[ "$recordedPid" == "$$" ]]; then
+        rm -f -- "$pidFile"
+    fi
+}
+
 # Kill any existing watchdog instances
 if [[ -f "$pidFile" ]]; then
     oldPid=$(cat "$pidFile")
@@ -64,21 +79,29 @@ fi
 
 # Write our PID
 echo "$$" > "$pidFile"
+trap cleanup_pid_file EXIT
 
 log_message "I38 Watchdog started (PID: $$)"
 
 lastSuccessTime=$(date +%s)
 consecutiveFailures=0
+consecutiveDisplayFailures=0
 
 while true; do
     sleep "$checkInterval"
 
-    # Check if i3 is still running
+    # An i3 restart leaves X available and launches a replacement watchdog via
-    if ! pgrep -x i3 > /dev/null; then
+    # exec_always. Only exit when the X session itself is no longer available.
-        log_message "i3 process not found - exiting watchdog"
+    if check_x_display; then
-        rm -f "$pidFile"
+        consecutiveDisplayFailures=0
+    else
+        ((consecutiveDisplayFailures++))
+        if [[ $consecutiveDisplayFailures -ge $displayFailureLimit ]]; then
+            log_message "X display unavailable for $consecutiveDisplayFailures consecutive checks - exiting watchdog"
             exit 0
         fi
+        continue
+    fi
 
     # Try to communicate with i3 IPC AND check X focus
     check_health