add NetDb::WaitForReady

NetDb.cpp

@@ -23,7 +23,7 @@ namespace data
 {		
 	NetDb netdb;
 
-	NetDb::NetDb (): m_IsRunning (false), m_Thread (nullptr), m_Reseeder (nullptr), m_Storage("netDb", "r", "routerInfo-", "dat"), m_HiddenMode(false)
+	NetDb::NetDb (): m_Ready(new std::promise<void>()), m_IsRunning (false), m_Thread (nullptr), m_Reseeder (nullptr), m_Storage("netDb", "r", "routerInfo-", "dat"), m_HiddenMode(false)
 	{
 	}
 	
@@ -45,6 +45,7 @@ namespace data
 
 		m_IsRunning = true;
 		m_Thread = new std::thread (std::bind (&NetDb::Run, this));
+		m_Ready->set_value();
 	}
 	
 	void NetDb::Stop ()
@@ -69,6 +70,13 @@ namespace data
 		}
 	}	
 
+  void NetDb::WaitForReady()
+  {
+    m_Ready->get_future().wait();
+    delete m_Ready;
+    m_Ready = nullptr;
+  }
+  
 	void NetDb::Run ()
 	{
 		uint32_t lastSave = 0, lastPublish = 0, lastExploratory = 0, lastManageRequest = 0, lastDestinationCleanup = 0;

NetDb.h

@@ -8,6 +8,7 @@
 #include <string>
 #include <thread>
 #include <mutex>
+#include <future>
 
 #include "Base.h"
 #include "Gzip.h"
@@ -48,6 +49,8 @@ namespace data
 
 			void Start ();
 			void Stop ();
+			/** block until netdb is ready, call only once*/
+			void WaitForReady();
     
 			bool AddRouterInfo (const uint8_t * buf, int len);
 			bool AddRouterInfo (const IdentHash& ident, const uint8_t * buf, int len);
@@ -109,6 +112,7 @@ namespace data
         std::shared_ptr<const RouterInfo> GetRandomRouter (Filter filter) const;	
 		
 		private:
+			std::promise<void> * m_Ready;
 		
 			mutable std::mutex m_LeaseSetsMutex;
 			std::map<IdentHash, std::shared_ptr<LeaseSet> > m_LeaseSets;