1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/private/selectdispatcher.h
3 // Purpose: wxSelectDispatcher class
4 // Authors: Lukasz Michalski and Vadim Zeitlin
5 // Created: December 2006
6 // Copyright: (c) Lukasz Michalski
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
11 #ifndef _WX_PRIVATE_SELECTDISPATCHER_H_
12 #define _WX_PRIVATE_SELECTDISPATCHER_H_
16 #if wxUSE_SELECT_DISPATCHER
18 #include <sys/types.h>
20 #include "wx/private/fdiodispatcher.h"
22 // helper class storing all the select() fd sets
23 class WXDLLIMPEXP_BASE wxSelectSets
26 // ctor zeroes out all fd_sets
29 // default copy ctor, assignment operator and dtor are ok
32 // return true if fd appears in any of the sets
33 bool HasFD(int fd
) const;
35 // add or remove FD to our sets depending on whether flags contains
36 // wxFDIO_INPUT/OUTPUT/EXCEPTION bits
37 bool SetFD(int fd
, int flags
);
39 // same as SetFD() except it unsets the bits set in the flags for the given
47 // call select() with our sets: the other parameters are the same as for
49 int Select(int nfds
, struct timeval
*tv
);
51 // call the handler methods corresponding to the sets having this fd
52 void Handle(int fd
, wxFDIOHandler
& handler
) const;
55 typedef void (wxFDIOHandler::*Callback
)();
57 // the FD sets indices
66 // the sets used with select()
69 // the wxFDIO_XXX flags, functions and names (used for debug messages only)
70 // corresponding to the FD sets above
71 static int ms_flags
[Max
];
72 static const char *ms_names
[Max
];
73 static Callback ms_handlers
[Max
];
76 class WXDLLIMPEXP_BASE wxSelectDispatcher
: public wxMappedFDIODispatcher
79 // returns the unique instance of this class, the pointer shouldn't be
80 // deleted and is normally never NULL
81 static wxSelectDispatcher
*Get();
83 // if we have any registered handlers, check for any pending events to them
84 // and dispatch them -- this is used from wxX11 and wxDFB event loops
86 static void DispatchPending();
88 // implement pure virtual methods of the base class
89 virtual bool RegisterFD(int fd
, wxFDIOHandler
*handler
, int flags
= wxFDIO_ALL
);
90 virtual bool ModifyFD(int fd
, wxFDIOHandler
*handler
, int flags
= wxFDIO_ALL
);
91 virtual bool UnregisterFD(int fd
);
92 virtual void RunLoop(int timeout
= TIMEOUT_INFINITE
);
98 // common part of RegisterFD() and ModifyFD()
99 bool DoUpdateFDAndHandler(int fd
, wxFDIOHandler
*handler
, int flags
);
101 // call the handlers for the fds present in the given sets
102 void ProcessSets(const wxSelectSets
& sets
);
104 // helper of ProcessSets(): call the handler if its fd is in the set
105 void DoProcessFD(int fd
, const fd_set
& fds
, wxFDIOHandler
*handler
,
109 // the select sets containing all the registered fds
112 // the highest registered fd value or -1 if none
116 #endif // wxUSE_SELECT_DISPATCHER
118 #endif // _WX_PRIVATE_SOCKETEVTDISPATCH_H_