replaced wxFDIODispatcher::RunLoop() with Dispatch() which handles only one event at a time (part 1 of the patch 1733626)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47470 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/private/fdiodispatcher.h

@@ -55,8 +55,8 @@ public:
     // unregister descriptor previously registered with RegisterFD()
     virtual bool UnregisterFD(int fd) = 0;
 
-    // loops waiting for an event to happen on any of the descriptors
-    virtual void RunLoop(int timeout) = 0;
+    // wait for an event for at most timeout milliseconds and process it
+    virtual void Dispatch(int timeout = TIMEOUT_INFINITE) = 0;
 
     virtual ~wxFDIODispatcher() { }
 };

include/wx/private/selectdispatcher.h

@@ -89,7 +89,7 @@ public:
     virtual bool RegisterFD(int fd, wxFDIOHandler *handler, int flags = wxFDIO_ALL);
     virtual bool ModifyFD(int fd, wxFDIOHandler *handler, int flags = wxFDIO_ALL);
     virtual bool UnregisterFD(int fd);
-    virtual void RunLoop(int timeout = TIMEOUT_INFINITE);
+    virtual void Dispatch(int timeout = TIMEOUT_INFINITE);
 
 protected:
     wxSelectDispatcher();

include/wx/unix/private/epolldispatcher.h

@@ -30,7 +30,7 @@ public:
     virtual bool RegisterFD(int fd, wxFDIOHandler* handler, int flags = wxFDIO_ALL);
     virtual bool ModifyFD(int fd, wxFDIOHandler* handler, int flags = wxFDIO_ALL);
     virtual bool UnregisterFD(int fd);
-    virtual void RunLoop(int timeout = TIMEOUT_INFINITE);
+    virtual void Dispatch(int timeout = TIMEOUT_INFINITE);
 
 private:
     // ctor is private, use Get()

src/common/selectdispatcher.cpp

@@ -23,7 +23,6 @@
 
 #include "wx/private/selectdispatcher.h"
 #include "wx/module.h"
-#include "wx/timer.h"
 #include "wx/unix/private.h"
 
 #ifndef WX_PRECOMP
@@ -152,7 +151,7 @@ wxSelectDispatcher *wxSelectDispatcher::Get()
 void wxSelectDispatcher::DispatchPending()
 {
     if ( gs_selectDispatcher )
-        gs_selectDispatcher->RunLoop(0);
+        gs_selectDispatcher->Dispatch(0);
 }
 
 wxSelectDispatcher::wxSelectDispatcher()
@@ -229,54 +228,40 @@ void wxSelectDispatcher::ProcessSets(const wxSelectSets& sets)
     }
 }
 
-void wxSelectDispatcher::RunLoop(int timeout)
+void wxSelectDispatcher::Dispatch(int timeout)
 {
     struct timeval tv,
-                  *ptv = NULL;
+                  *ptv;
     if ( timeout != TIMEOUT_INFINITE )
     {
         ptv = &tv;
         tv.tv_sec = 0;
         tv.tv_usec = timeout*1000;
     }
-
-    for ( ;; )
+    else // no timeout
     {
-        wxSelectSets sets = m_sets;
+        ptv = NULL;
+    }
 
-        wxStopWatch sw;
-        if ( ptv && timeout )
-          sw.Start(ptv->tv_usec/10);
+    wxSelectSets sets = m_sets;
 
     const int ret = sets.Select(m_maxFD + 1, ptv);
     switch ( ret )
     {
         case -1:
-                // continue if we were interrupted by a signal, else bail out
             if ( errno != EINTR )
             {
                 wxLogSysError(_("Failed to monitor I/O channels"));
-                    return;
             }
             break;
 
         case 0:
             // timeout expired without anything happening
-                return;
+            break;
 
         default:
             ProcessSets(sets);
     }
-
-        if ( ptv )
-        {
-            timeout -= sw.Time();
-            if ( timeout <= 0 )
-                break;
-
-            ptv->tv_usec = timeout*1000;
-        }
-    }
 }
 
 // ----------------------------------------------------------------------------

src/unix/epolldispatcher.cpp

@@ -135,7 +135,7 @@ bool wxEpollDispatcher::UnregisterFD(int fd)
     return true;
 }
 
-void wxEpollDispatcher::RunLoop(int timeout)
+void wxEpollDispatcher::Dispatch(int timeout)
 {
     epoll_event events[16];
 
@@ -168,11 +168,9 @@ void wxEpollDispatcher::RunLoop(int timeout)
 
         if ( p->events & EPOLLIN )
             handler->OnReadWaiting();
-
-        if ( p->events & EPOLLOUT )
+        else if ( p->events & EPOLLOUT )
             handler->OnWriteWaiting();
-
-        if ( p->events & (EPOLLERR | EPOLLHUP) )
+        else if ( p->events & (EPOLLERR | EPOLLHUP) )
             handler->OnExceptionWaiting();
     }
 }