Implement monitoring of file descriptors in wxMotif event loop.

[wxWidgets.git] / include / wx / private / selectdispatcher.h

diff --git a/include/wx/private/selectdispatcher.h b/include/wx/private/selectdispatcher.h
index cd86e15cd8d4ec234eb7b7428a7e8e15ea7e790a..5c17fe650e68728d036ac8a8216870321fecb1e3 100644 (file)
--- a/include/wx/private/selectdispatcher.h
+++ b/include/wx/private/selectdispatcher.h
@@ -13,6 +13,21 @@
 
 #include "wx/defs.h"
 
+#if wxUSE_SELECT_DISPATCHER
+
+#if defined(HAVE_SYS_SELECT_H) || defined(__WATCOMC__)
+    #include <sys/time.h>
+    #include <sys/select.h>
+#endif
+
+#ifdef __WATCOMC__
+    #include <types.h>
+    #include <sys/ioctl.h>
+    #include <tcpustd.h>
+#else
+    #include <sys/types.h>
+#endif
+
 #include "wx/private/fdiodispatcher.h"
 
 // helper class storing all the select() fd sets
@@ -34,9 +49,9 @@ public:
 
     // same as SetFD() except it unsets the bits set in the flags for the given
     // fd
-    bool ClearFD(int fd, int flags)
+    bool ClearFD(int fd)
     {
-        return SetFD(fd, wxFDIO_ALL & ~flags);
+        return SetFD(fd, 0);
     }
 
 
@@ -44,8 +59,9 @@ public:
     // select() itself
     int Select(int nfds, struct timeval *tv);
 
-    // call the handler methods corresponding to the sets having this fd
-    void Handle(int fd, wxFDIOHandler& handler) const;
+    // call the handler methods corresponding to the sets having this fd if it
+    // is present in any set and return true if it is
+    bool Handle(int fd, wxFDIOHandler& handler) const;
 
 private:
     typedef void (wxFDIOHandler::*Callback)();
@@ -69,38 +85,35 @@ private:
     static Callback ms_handlers[Max];
 };
 
-class WXDLLIMPEXP_BASE wxSelectDispatcher : public wxFDIODispatcher
+class WXDLLIMPEXP_BASE wxSelectDispatcher : public wxMappedFDIODispatcher
 {
 public:
-    // returns the unique instance of this class, the pointer shouldn't be
-    // deleted and is normally never NULL
-    static wxSelectDispatcher *Get();
-
-    // if we have any registered handlers, check for any pending events to them
-    // and dispatch them -- this is used from wxX11 and wxDFB event loops
-    // implementation
-    static void DispatchPending();
+    // default ctor
+    wxSelectDispatcher() { m_maxFD = -1; }
 
     // implement pure virtual methods of the base class
     virtual bool RegisterFD(int fd, wxFDIOHandler *handler, int flags = wxFDIO_ALL);
     virtual bool ModifyFD(int fd, wxFDIOHandler *handler, int flags = wxFDIO_ALL);
-    virtual wxFDIOHandler *UnregisterFD(int fd, int flags = wxFDIO_ALL);
-    virtual void RunLoop(int timeout = TIMEOUT_INFINITE);
-
-protected:
-    wxSelectDispatcher();
+    virtual bool UnregisterFD(int fd);
+    virtual bool HasPending() const;
+    virtual int Dispatch(int timeout = TIMEOUT_INFINITE);
 
 private:
     // common part of RegisterFD() and ModifyFD()
     bool DoUpdateFDAndHandler(int fd, wxFDIOHandler *handler, int flags);
 
-    // call the handlers for the fds present in the given sets
-    void ProcessSets(const wxSelectSets& sets);
+    // call the handlers for the fds present in the given sets, return the
+    // number of handlers we called
+    int ProcessSets(const wxSelectSets& sets);
 
     // helper of ProcessSets(): call the handler if its fd is in the set
     void DoProcessFD(int fd, const fd_set& fds, wxFDIOHandler *handler,
                      const char *name);
 
+    // common part of HasPending() and Dispatch(): calls select() with the
+    // specified timeout
+    int DoSelect(wxSelectSets& sets, int timeout) const;
+
 
     // the select sets containing all the registered fds
     wxSelectSets m_sets;
@@ -109,5 +122,6 @@ private:
     int m_maxFD;
 };
 
+#endif // wxUSE_SELECT_DISPATCHER
 
 #endif // _WX_PRIVATE_SOCKETEVTDISPATCH_H_