this fixed the correct handling of the default main loop

but setting another DefaultTimeout isn't nice. I've to look later again into the problem. Maybe I did it wrong. Currently there's a compiler warning that could be ignores as long as Slot is created with void parameter, but I consider this as bug in the long time and I've to fix it!!

examples/echo/echo-client.cpp

@@ -36,6 +36,9 @@ EchoClient *g_client = NULL;
 
 DBus::Pipe *thread_pipe_list[THREADS];
 
+DBus::BusDispatcher dispatcher;
+DBus::DefaultTimeout *timeout;
+
 void *greeter_thread(void *arg)
 {
 	char idstr[16];
@@ -50,8 +53,6 @@ void *greeter_thread(void *arg)
 	return NULL;
 }
 
-DBus::BusDispatcher dispatcher;
-
 void niam(int sig)
 {
 	spin = false;
@@ -62,30 +63,30 @@ void niam(int sig)
 void handler1 (const void *data, void *buffer, unsigned int nbyte)
 {
 	char *str = (char*) buffer;
-	cout << "buffer1: " << str << endl;
+	cout << "buffer1: " << str << ", size: " << nbyte << endl;
 	for (int i = 0; i < 30 && spin; ++i)
 	{
-		cout << g_client->Hello (str) << endl;
+		cout << "call1: " << g_client->Hello (str) << endl;
 	}
 }
 
 void handler2 (const void *data, void *buffer, unsigned int nbyte)
 {
 	char *str = (char*) buffer;
-	cout << "buffer2: " << str << endl;
+	cout << "buffer2: " << str << ", size: " << nbyte <<endl;
 	for (int i = 0; i < 30 && spin; ++i)
 	{
-		cout << g_client->Hello (str) << endl;
+		cout << "call2: " << g_client->Hello (str) << endl;
 	}
 }
 
 void handler3 (const void *data, void *buffer, unsigned int nbyte)
 {
 	char *str = (char*) buffer;
-	cout << "buffer3: " << str << endl;
+	cout << "buffer3: " << str << ", size: " << nbyte <<endl;
 	for (int i = 0; i < 30 && spin; ++i)
 	{
-		cout << g_client->Hello (str) << endl;
+		cout << "call3: " << g_client->Hello (str) << endl;
 	}
 }
 
@@ -96,7 +97,10 @@ int main()
 
 	DBus::_init_threading();
 
-	DBus::default_dispatcher = &dispatcher;
+  DBus::default_dispatcher = &dispatcher;
+
+  // increase DBus-C++ frequency
+  new DBus::DefaultTimeout(100, false, &dispatcher);
 
 	DBus::Connection conn = DBus::Connection::SessionBus();
 

include/dbus-c++/dispatcher.h

@@ -44,7 +44,7 @@ public:
 	/*!
 	 * \brief Gets the timeout interval.
 	 *
-	 * The dbus_timeout_handle() should be called each time this interval elapses, 
+	 * The handle() should be called each time this interval elapses, 
 	 * starting after it elapses once.
 	 *
 	 * The interval may change during the life of the timeout; if so, the timeout 

include/dbus-c++/glib-integration.h

@@ -54,9 +54,9 @@ private:
 
 private:
 
-	GSource *_source;
 	GMainContext *_ctx;
 	int _priority;
+	GSource *_source;
 
 friend class BusDispatcher;
 };
@@ -79,9 +79,9 @@ private:
 
 private:
 
-	GSource *_source;
 	GMainContext *_ctx;
 	int _priority;
+	GSource *_source;
 
 friend class BusDispatcher;
 };

include/dbus-c++/pipe.h

@@ -43,7 +43,7 @@ public:
 	 */
 	void write(const void *buffer, unsigned int nbytes);
 
-  ssize_t read(void *buffer, unsigned int nbytes);
+  ssize_t read(void *buffer, unsigned int &nbytes);
 
 	/*!
 	 * Simply write one single byte into the pipe. This is a shortcut

include/dbus-c++/util.h

@@ -28,6 +28,8 @@
 #include <sstream>
 #include <iostream>
 #include <iomanip>
+#include <cassert>
+
 #include "api.h"
 #include "debug.h"
 
@@ -232,15 +234,29 @@ public:
 
 	R operator()(P param) const
 	{
-		/*if (_cb.get())*/ return _cb->call(param);
+		if (!empty())
+    {      
+      return _cb->call(param);
+    }
+
+    // TODO: think about return type in this case
+    // this assert should help me to find the use case where it's needed...
+    //assert (false);
 	}
 
 	R call(P param) const
 	{
-		/*if (_cb.get())*/ return _cb->call(param);
+		if (!empty())
+    {
+      return _cb->call(param);
+    }
+
+    // TODO: think about return type in this case
+    // this assert should help me to find the use case where it's needed...
+    //assert (false);
 	}
 
-	bool empty()
+	bool empty() const
 	{
 		return _cb.get() == 0;
 	}

src/eventloop-integration.cpp

@@ -103,20 +103,14 @@ void BusDispatcher::enter()
 		     ++p_it)
 		{
 			Pipe* read_pipe = *p_it;
-			char buf;
-			char buf_str[1024];
-			int i = 0;
+      char buffer[1024]; // TODO: should be max pipe size
+      unsigned int nbytes = 0;
 			
-			while (read_pipe->read((void*) &buf, 1) > 0)
-			{
-				buf_str[i] = buf;
-				++i;
-			}
+      while (read_pipe->read(buffer, nbytes) > 0)
+      {        
+        read_pipe->_handler (read_pipe->_data, buffer, nbytes);
+      }
 
-			if (i > 0)
-			{
-				read_pipe->_handler (read_pipe->_data, buf_str, i);
-			}
 		}
 	}
 

src/eventloop.cpp

@@ -34,6 +34,7 @@
 #include <dbus/dbus.h>
 
 using namespace DBus;
+using namespace std;
 
 static double millis(timeval tv)
 {

src/pipe.cpp

@@ -35,6 +35,7 @@
 #include <sys/poll.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <cassert>
 
 using namespace DBus;
 using namespace std;
@@ -52,7 +53,6 @@ Pipe::Pipe(void(*handler)(const void *data, void *buffer, unsigned int nbyte), c
     _fd_read = fd[0];
     _fd_write = fd[1];
     fcntl(_fd_read, F_SETFL, O_NONBLOCK);
-    fcntl(_fd_write, F_SETFL, O_NONBLOCK);
   }
   else
   {
@@ -62,11 +62,19 @@ Pipe::Pipe(void(*handler)(const void *data, void *buffer, unsigned int nbyte), c
 
 void Pipe::write(const void *buffer, unsigned int nbytes)
 {
+  // first write the size into the pipe...
+  ::write(_fd_write, static_cast <const void*> (&nbytes), sizeof(nbytes));
+
+  // ...then write the real data
 	::write(_fd_write, buffer, nbytes);
 }
 
-ssize_t Pipe::read(void *buffer, unsigned int nbytes)
-{
+ssize_t Pipe::read(void *buffer, unsigned int &nbytes)
+{  
+  // first read the size from the pipe...
+  ::read(_fd_read, &nbytes, sizeof (nbytes));
+
+  //ssize_t size = 0;
   return ::read(_fd_read, buffer, nbytes);
 }