main/binding: do not allow concurrent threads in App

Signed-off-by: Marcus Fritzsch <marcus_fritzsch@mentor.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/main.cpp b/src/main.cpp
index a768347..47e3335 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -20,6 +20,8 @@
 #include "wayland.hpp"
 
 #include <algorithm>
+#include <mutex>
+
 #include <json.h>
 
 extern "C" {
@@ -28,6 +30,8 @@ extern "C" {
 }
 
 namespace {
+std::mutex binding_m;
+
 struct afb_instance {
    std::unique_ptr<wl::display> display;
    wm::App app;
@@ -49,6 +53,8 @@ int afb_instance::init() {
 
 int display_event_callback(sd_event_source *evs, int /*fd*/, uint32_t events,
                            void * /*data*/) {
+   std::lock_guard<std::mutex> guard(binding_m);
+
    if ((events & EPOLLHUP) != 0) {
       logerror("The compositor hung up, dying now.");
       delete g_afb_instance;