netlink: improved event handling

src/fastgame_apply.cpp

@@ -344,20 +344,20 @@ auto main([[maybe_unused]] int argc, [[maybe_unused]] char* argv[]) -> int {
 
   // nl->new_exit.connect([&](int pid) {});
 
-  auto check_lock_file = [&]() {
-    while (std::filesystem::is_regular_file(input_file)) {
-      std::this_thread::sleep_for(std::chrono::seconds(1));
-    }
+  // auto check_lock_file = [&]() {
+  //   while (std::filesystem::is_regular_file(input_file)) {
+  //     std::this_thread::sleep_for(std::chrono::seconds(1));
+  //   }
 
-    util::info("The lock file has been removed. Exitting the lock thread.");
+  //   util::info("The lock file has been removed. Exitting the lock thread.");
 
-    nl->listen = false;
-  };
+  //   nl->listen = false;
+  // };
 
   if (nl->listen) {
-    std::thread t(check_lock_file);
+    // std::thread t(check_lock_file);
 
-    t.detach();
+    // t.detach();
 
     nl->handle_events();  // This is a blocking call. It has to be started at the end
 

src/netlink.cpp

@@ -95,7 +95,13 @@ void Netlink::handle_events() {
                  .msg_controllen = 0,
                  .msg_flags = 0};
 
+  auto input_file = std::filesystem::temp_directory_path() / std::filesystem::path{"fastgame.json"};
+
   while (listen) {
+    if (!std::filesystem::is_regular_file(input_file)) {
+      return;
+    }
+
     auto len = recvmsg(nl_socket, &msg_hdr, 0);
 
     if (len == -1) {

src/presets_manager.cpp

@@ -603,14 +603,9 @@ bool Backend::applySettings() {
     save_preset("fastgame", std::filesystem::temp_directory_path());
 
     try {
-      std::thread t([]() {
-        // std::system("pkexec fastgame_apply");
-        boost::process::child c(boost::process::search_path("pkexec"), "fastgame_apply");
+      boost::process::child c(boost::process::search_path("pkexec"), "fastgame_apply");
 
-        c.wait();
-      });
-
-      t.detach();
+      c.detach();
 
       Q_EMIT settingsApplied();
     } catch (std::exception& e) {