X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=PPI%2FIOEvent.hh;h=d2f952819a3fb89806b3ddecef3663066e5b47c7;hb=6ba573a99f93543ee32292f79865751b3e9b89a4;hp=ad239b864d623093eead5d4a46c59ae6345318fd;hpb=53a3d02e7fde841badf42555eba87ccef4566073;p=senf.git

diff --git a/PPI/IOEvent.hh b/PPI/IOEvent.hh
index ad239b8..d2f9528 100644
--- a/PPI/IOEvent.hh
+++ b/PPI/IOEvent.hh
@@ -1,8 +1,8 @@
 // $Id$
 //
-// Copyright (C) 2007 
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+// Copyright (C) 2007
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
 //     Stefan Bund <g0dil@berlios.de>
 //
 // This program is free software; you can redistribute it and/or modify
@@ -27,8 +27,9 @@
 #define HH_IOEvent_ 1
 
 // Custom includes
-#include "Scheduler/Scheduler.hh"
+#include "../Scheduler/Scheduler.hh"
 #include "Events.hh"
+#include "../Utils/Exception.hh"
 
 //#include "IOEvent.mpp"
 ///////////////////////////////hh.p////////////////////////////////////////
@@ -52,6 +53,15 @@ namespace ppi {
         An IOEvent is signaled, whenever the FileHandle \a handle becomes readable or writable. The
         type of event is specified using the \a events mask with values from EventFlags.
 
+        There are two types of flags:
+        
+        \li <em>Event flags</em> (\ref Read, \ref Prio, \ref Write) specify the type of event. The
+            callback will be called whenever one of the specified events occurs on the filehandle
+        \li <em>Error flags</em> (\ref Hup, \ref Err) specify some type of error condition on the
+            filehandle. If you specify an error flag when registering the event, the error condition
+            will be passed to the callback, otherwise an ErrorException or HangupException will be
+            thrown.
+
         \see IOEventInfo
 
         \ingroup event_group
@@ -66,11 +76,13 @@ namespace ppi {
         // This is stupid, however there is no way to import the Scheduler::EventId enum together
         // with the enumeration symbols
 
-        enum EventFlags { Read  = Scheduler::EV_READ, 
-                          Prio = Scheduler::EV_PRIO,
-                          Write = Scheduler::EV_WRITE,
-                          Hup = Scheduler::EV_HUP,
-                          Err = Scheduler::EV_ERR };
+        enum EventFlags { 
+              Read  = Scheduler::EV_READ   /**< FileHandle is readable */
+            , Prio = Scheduler::EV_PRIO    /**< FileHandle priority data is readable */
+            , Write = Scheduler::EV_WRITE  /**< FileHandle is writable */
+            , Hup = Scheduler::EV_HUP      /**< Hangup condition on FileHandle */
+            , Err = Scheduler::EV_ERR      /**< Some other error condition on FileHandle */
+        };
 
         ///////////////////////////////////////////////////////////////////////////
         ///\name Structors and default members
@@ -83,14 +95,12 @@ namespace ppi {
         ///////////////////////////////////////////////////////////////////////////
 
         /** \brief Unhandled error condition */
-        struct ErrorException : public std::exception
-        { virtual char const * what() const throw() 
-                { return "senf::ppi::IOEvent::ErrorException"; } };
+        struct ErrorException : public senf::Exception
+        { ErrorException() : senf::Exception("senf::ppi::IOEvent::ErrorException"){} };
 
         /** \brief Unhandled hangup condition */
-        struct HangupException : public std::exception
-        { virtual char const * what() const throw() 
-                { return "senf::ppi::IOEvent::HangupException"; } };
+        struct HangupException : public senf::Exception
+        { HangupException() : senf::Exception("senf::ppi::IOEvent::HangupException"){} };
 
     protected:
 
@@ -98,7 +108,7 @@ namespace ppi {
         virtual void v_enable();
          virtual void v_disable();
         
-        void cb(int, Scheduler::EventId event);
+        void cb(Scheduler::EventId event);
 
         int fd_;
         unsigned events_;