initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/msw/private/sockmsw.h

@@ -0,0 +1,95 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:       wx/msw/private/gsockmsw.h
+// Purpose:    MSW-specific socket implementation
+// Authors:    Guilhem Lavaux, Guillermo Rodriguez Garcia, Vadim Zeitlin
+// Created:    April 1997
+// Copyright:  (C) 1999-1997, Guilhem Lavaux
+//             (C) 1999-2000, Guillermo Rodriguez Garcia
+//             (C) 2008 Vadim Zeitlin
+// Licence:    wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+
+#ifndef _WX_MSW_GSOCKMSW_H_
+#define _WX_MSW_GSOCKMSW_H_
+
+#include "wx/msw/wrapwin.h"
+
+#if defined(__CYGWIN__)
+    //CYGWIN gives annoying warning about runtime stuff if we don't do this
+#   define USE_SYS_TYPES_FD_SET
+#   include <sys/types.h>
+#endif
+
+#if defined(__CYGWIN__)
+    #include <winsock.h>
+    #ifdef __LP64__
+        // We can't use long in this case because it is 64 bits with Cygwin, so
+        // use their special type used for working around this instead.
+        #define wxIoctlSocketArg_t __ms_u_long
+    #endif
+#endif
+
+#ifndef wxIoctlSocketArg_t
+    #define wxIoctlSocketArg_t u_long
+#endif
+
+#define wxCloseSocket closesocket
+
+// ----------------------------------------------------------------------------
+// MSW-specific socket implementation
+// ----------------------------------------------------------------------------
+
+class wxSocketImplMSW : public wxSocketImpl
+{
+public:
+    wxSocketImplMSW(wxSocketBase& wxsocket);
+
+    virtual ~wxSocketImplMSW();
+
+    virtual void ReenableEvents(wxSocketEventFlags WXUNUSED(flags)) override
+    {
+        // notifications are never disabled in this implementation, there is no
+        // need for this as WSAAsyncSelect() only sends notification once when
+        // the new data becomes available anyhow, so there is no need to do
+        // anything here
+    }
+
+    virtual void UpdateBlockingState() override
+    {
+        if ( GetSocketFlags() & wxSOCKET_BLOCK )
+        {
+            // Counter-intuitively, we make the socket non-blocking even in
+            // this case as it is necessary e.g. for Read() to return
+            // immediately if there is no data available. However we must not
+            // install a callback for it as blocking sockets don't use any
+            // events and generating them would actually be harmful (and not
+            // just useless) as they would be dispatched by the main thread
+            // while this blocking socket can be used from a worker one, so it
+            // would result in data races and other unpleasantness.
+            wxIoctlSocketArg_t trueArg = 1;
+            ioctlsocket(m_fd, FIONBIO, &trueArg);
+
+            // Uninstall it in case it was installed before.
+            wxSocketManager::Get()->Uninstall_Callback(this);
+        }
+        else
+        {
+            // No need to make the socket non-blocking, Install_Callback() will
+            // do it as a side effect of calling WSAAsyncSelect().
+            wxSocketManager::Get()->Install_Callback(this);
+        }
+    }
+
+private:
+    virtual wxSocketError GetLastError() const override;
+    virtual void DoClose() override;
+
+    int m_msgnumber;
+
+    friend class wxSocketMSWManager;
+
+    wxDECLARE_NO_COPY_CLASS(wxSocketImplMSW);
+};
+
+#endif  /* _WX_MSW_GSOCKMSW_H_ */