Re-add config file watch in case of IN_DELETE_SELF

src/notify.cpp

@@ -21,14 +21,19 @@ static void fileChanged(void *params_void) {
             struct inotify_event *event =
                 (struct inotify_event *) &buffer[i];
             i += EVENT_SIZE + event->len;
-            if (event->mask & IN_MODIFY /*|| event->mask & IN_IGNORED*/) {
+            if (event->mask & IN_MODIFY || event->mask & IN_DELETE_SELF) {
+                // In the case of IN_DELETE_SELF, some editors may to a save-to-temp-file/delete-original/move-temp-file
+                // so sleep a little to let file to be replaced
+                std::this_thread::sleep_for(std::chrono::milliseconds(100));
                 parse_overlay_config(&local_params, getenv("MANGOHUD_CONFIG"));
-                std::lock_guard<std::mutex> lk(nt->mutex);
-                /*if (nt->params->config_file_path != local_params.config_file_path) {
+                if ((event->mask & IN_DELETE_SELF) || (nt->params->config_file_path != local_params.config_file_path)) {
+#ifndef NDEBUG
                     fprintf(stderr, "MANGOHUD: watching config file: %s\n", local_params.config_file_path.c_str());
+#endif
                     inotify_rm_watch(nt->fd, nt->wd);
-                    nt->wd = inotify_add_watch(nt->fd, local_params.config_file_path.c_str(), IN_MODIFY | IN_DELETE | IN_DELETE_SELF);
-                }*/
+                    nt->wd = inotify_add_watch(nt->fd, local_params.config_file_path.c_str(), IN_MODIFY | IN_DELETE_SELF);
+                }
+                std::lock_guard<std::mutex> lk(nt->mutex);
                 *nt->params = local_params;
             }
         }
@@ -39,13 +44,13 @@ static void fileChanged(void *params_void) {
 
 bool start_notifier(notify_thread& nt)
 {
-    nt.fd = inotify_init();
-    nt.wd = inotify_add_watch( nt.fd, nt.params->config_file_path.c_str(), IN_MODIFY);
-
-    int flags = fcntl(nt.fd, F_GETFL, 0);
-    if (fcntl(nt.fd, F_SETFL, flags | O_NONBLOCK))
-        perror("Set non-blocking failed");
+    nt.fd = inotify_init1(IN_NONBLOCK);
+    if (nt.fd < 0) {
+        perror("MANGOHUD: inotify_init1");
+        return false;
+    }
 
+    nt.wd = inotify_add_watch(nt.fd, nt.params->config_file_path.c_str(), IN_MODIFY | IN_DELETE_SELF);
     if (nt.wd < 0) {
         close(nt.fd);
         nt.fd = -1;