[impl] isRunning call for Http server to check whether it is still running

[impl] Ability to update system files of the update program

CCEngine/src/CCServer.cpp

@@ -746,6 +746,7 @@ public:
 public:
     void run()
     {
+        std::lock_guard<std::mutex> scopeGuard(m_mutex);
         // Create and launch a listening port
         std::make_shared<listener>(
             m_ioc,
@@ -766,6 +767,7 @@ public:
 
     void shutdown()
     {
+        std::lock_guard<std::mutex> scopeGuard(m_lock);
         m_ioc.stop();
         for (auto& t : m_threads)
         {
@@ -774,12 +776,18 @@ public:
         m_threads.clear();
     }
 
+    bool isRunning() const
+    {
+        return m_ioc.stopped();
+    }
+
     void clearCache()
     {
         m_etagCache.clear();
     }
 
 private:
+    mutable std::mutex m_lock;
     int m_maxThreads;
     std::string m_docRoot;
     etag_cache m_etagCache;
@@ -813,3 +821,7 @@ void CCServer::run()
     m_impl->run();
 }
 
+bool CCServer::isRunning() const
+{
+    return m_impl->isRunning();
+}

CCEngine/src/CCServer.h

@@ -16,6 +16,7 @@ public:
 
 public:
     void run();
+    bool isRunning() const;
     void shutdown();
     void clearCache();