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96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/msw/private/gsockmsw.h
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// Purpose: MSW-specific socket implementation
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// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia, Vadim Zeitlin
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// Created: April 1997
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// Copyright: (C) 1999-1997, Guilhem Lavaux
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// (C) 1999-2000, Guillermo Rodriguez Garcia
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// (C) 2008 Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_MSW_GSOCKMSW_H_
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#define _WX_MSW_GSOCKMSW_H_
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#include "wx/msw/wrapwin.h"
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#if defined(__CYGWIN__)
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//CYGWIN gives annoying warning about runtime stuff if we don't do this
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# define USE_SYS_TYPES_FD_SET
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# include <sys/types.h>
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#endif
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#if defined(__CYGWIN__)
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#include <winsock.h>
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#ifdef __LP64__
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// We can't use long in this case because it is 64 bits with Cygwin, so
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// use their special type used for working around this instead.
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#define wxIoctlSocketArg_t __ms_u_long
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#endif
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#endif
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#ifndef wxIoctlSocketArg_t
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#define wxIoctlSocketArg_t u_long
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#endif
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#define wxCloseSocket closesocket
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// ----------------------------------------------------------------------------
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// MSW-specific socket implementation
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// ----------------------------------------------------------------------------
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class wxSocketImplMSW : public wxSocketImpl
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{
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public:
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wxSocketImplMSW(wxSocketBase& wxsocket);
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virtual ~wxSocketImplMSW();
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virtual wxSocketError GetLastError() const wxOVERRIDE;
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virtual void ReenableEvents(wxSocketEventFlags WXUNUSED(flags)) wxOVERRIDE
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{
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// notifications are never disabled in this implementation, there is no
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// need for this as WSAAsyncSelect() only sends notification once when
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// the new data becomes available anyhow, so there is no need to do
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// anything here
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}
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virtual void UpdateBlockingState() wxOVERRIDE
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{
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if ( GetSocketFlags() & wxSOCKET_BLOCK )
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{
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// Counter-intuitively, we make the socket non-blocking even in
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// this case as it is necessary e.g. for Read() to return
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// immediately if there is no data available. However we must not
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// install a callback for it as blocking sockets don't use any
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// events and generating them would actually be harmful (and not
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// just useless) as they would be dispatched by the main thread
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// while this blocking socket can be used from a worker one, so it
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// would result in data races and other unpleasantness.
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wxIoctlSocketArg_t trueArg = 1;
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ioctlsocket(m_fd, FIONBIO, &trueArg);
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// Uninstall it in case it was installed before.
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wxSocketManager::Get()->Uninstall_Callback(this);
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}
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else
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{
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// No need to make the socket non-blocking, Install_Callback() will
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// do it as a side effect of calling WSAAsyncSelect().
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wxSocketManager::Get()->Install_Callback(this);
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}
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}
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private:
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virtual void DoClose() wxOVERRIDE;
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int m_msgnumber;
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friend class wxSocketMSWManager;
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wxDECLARE_NO_COPY_CLASS(wxSocketImplMSW);
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};
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#endif /* _WX_MSW_GSOCKMSW_H_ */
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