94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: wx/private/selectdispatcher.h
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// Purpose: wxSelectDispatcher class
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// Authors: Lukasz Michalski
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// Modified by:
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// Created: December 2006
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// Copyright: (c) Lukasz Michalski
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// RCS-ID: $Id$
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_PRIVATE_SELECTDISPATCHER_H_
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#define _WX_PRIVATE_SELECTDISPATCHER_H_
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#include "wx/defs.h"
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#include "wx/hashmap.h"
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static const int wxSELECT_TIMEOUT_INFINITE = -1;
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// handler used to process events on descriptors
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class wxFDIOHandler
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{
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public:
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// called when descriptor is available for non-blocking read
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virtual void OnReadWaiting(int fd) = 0;
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// called when descriptor is available for non-blocking write
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virtual void OnWriteWaiting(int fd) = 0;
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// called when there is exception on descriptor
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virtual void OnExceptionWaiting(int fd) = 0;
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};
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// those flags describes sets where descriptor should be added
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enum wxSelectDispatcherEntryFlags
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{
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wxSelectInput = 1,
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wxSelectOutput = 2,
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wxSelectException = 4,
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wxSelectAll = wxSelectInput | wxSelectOutput | wxSelectException
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};
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WX_DECLARE_HASH_MAP(
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int,
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wxFDIOHandler*,
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wxIntegerHash,
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wxIntegerEqual,
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wxFDIOHandlerMap
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);
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class WXDLLIMPEXP_CORE wxSelectDispatcher
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{
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public:
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// returns instance of the table
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static wxSelectDispatcher& Get();
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virtual ~wxSelectDispatcher()
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{
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}
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// register descriptor in sets.
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void RegisterFD(int fd, wxFDIOHandler* handler, int flags = wxSelectAll);
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// unregister descriptor from sets and return handler for cleanup
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wxFDIOHandler* UnregisterFD(int fd, int flags = wxSelectAll);
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// return handler for descriptor or null if fd is not registered
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wxFDIOHandler* FindHandler(int fd);
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// calls select on registered descriptors and
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void RunLoop(int timeout = wxSELECT_TIMEOUT_INFINITE);
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protected:
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wxSelectDispatcher() { }
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private:
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void ProcessSets(fd_set* readset, fd_set* writeset, fd_set* exeptset, int max_fd);
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fd_set m_readset;
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fd_set m_writeset;
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fd_set m_exeptset;
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int m_maxFD;
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wxFDIOHandlerMap m_handlers;
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static wxSelectDispatcher *ms_instance;
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friend class wxSelectDispatcherModule;
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};
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#endif // _WX_PRIVATE_SOCKETEVTDISPATCH_H_
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