stack trace at this moment only for main thread

ml_profiler.h

@@ -5,6 +5,9 @@
 #include <unordered_map>
 #include <deque>
 #include <chrono>
+#include <thread>
+#include <mutex>
+
 
 static const int method_name_print_len = 15;
 static const int print_top_methods = 15;
@@ -13,7 +16,9 @@ static const int call_stack_max_methods = 10;
 class MlPerfMon {
 
 private:
-    MlPerfMon() : perfOn(false) {};
+    MlPerfMon() : perfOn(false) {
+        main_thread_id = std::this_thread::get_id();
+    };
 
 public:
 
@@ -36,4 +41,5 @@ private:
     std::unordered_map<std::string, long> calls_counter;
     std::chrono::time_point<std::chrono::high_resolution_clock> start_time;
     std::deque<std::string> call_stack;
+    std::thread::id main_thread_id;
 };