*: adding a threaded worker example

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

worker.cpp

@@ -0,0 +1,32 @@
+#include <iostream>
+#include <thread>
+#include <condition_variable>
+#include <mutex>
+
+// https://en.cppreference.com/w/cpp/thread/thread
+// https://en.cppreference.com/w/cpp/thread/mutex
+// https://en.cppreference.com/w/cpp/thread/condition_variable
+
+std::mutex mtx;
+std::condition_variable cv;
+bool ready = false;
+
+void worker() {
+    std::unique_lock<std::mutex> lock(mtx);
+    cv.wait(lock, [] { return ready; }); // Wait until 'ready' is set to true
+    std::cout << "Daemon process woke up!" << std::endl;
+}
+
+int main() {
+    std::thread daemon(worker);
+
+    std::this_thread::sleep_for(std::chrono::seconds(5));
+    {
+        std::lock_guard<std::mutex> lock(mtx);
+        ready = true;
+    }
+    cv.notify_one();
+
+    daemon.join();
+    return 0;
+}