Revert "*Always* send a shutdown signal to enable custom shutdown actions"

This reverts commit 896899e0d6.

src/bitcoinrpc.cpp

@@ -2905,7 +2905,8 @@ void ThreadRPCServer2(void* parg)
     }
 
     vnThreadsRunning[THREAD_RPCLISTENER]--;
-    io_service.run();
+    while (!fShutdown)
+        io_service.run_one();
     vnThreadsRunning[THREAD_RPCLISTENER]++;
 }
 

src/init.cpp

@@ -9,7 +9,6 @@
 #include "init.h"
 #include "util.h"
 #include "ui_interface.h"
-#include <boost/bind.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/filesystem/fstream.hpp>
 #include <boost/filesystem/convenience.hpp>
@@ -41,8 +40,13 @@ void ExitTimeout(void* parg)
 
 void StartShutdown()
 {
+#ifdef QT_GUI
     // ensure we leave the Qt main loop for a clean GUI exit (Shutdown() is called in bitcoin.cpp afterwards)
     uiInterface.QueueShutdown();
+#else
+    // Without UI, Shutdown() can simply be started in a new thread
+    CreateThread(Shutdown, NULL);
+#endif
 }
 
 void Shutdown(void* parg)
@@ -150,11 +154,6 @@ bool AppInit(int argc, char* argv[])
             exit(ret);
         }
 
-        // Create the shutdown thread when receiving a shutdown signal
-        boost::signals2::scoped_connection do_stop(
-                uiInterface.QueueShutdown.connect(boost::bind(
-                    &CreateThread, &Shutdown, static_cast<void*>(0), false)));
-
         fRet = AppInit2();
     }
     catch (std::exception& e) {