/* -------------------------------------------------------------------------
- * Project: GSocket (Generic Socket)
- * Name: gsockmsw.c
- * Author: Guillermo Rodriguez Garcia <guille@iies.es>
- * Purpose: GSocket GUI-specific MSW code
- * CVSID: $Id$
+ * Project: GSocket (Generic Socket)
+ * Name: src/msw/gsockmsw.cpp
+ * Copyright: (c) Guilhem Lavaux
+ * Licence: wxWindows Licence
+ * Author: Guillermo Rodriguez Garcia <guille@iies.es>
+ * Purpose: GSocket GUI-specific MSW code
+ * CVSID: $Id$
* -------------------------------------------------------------------------
*/
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#if wxUSE_SOCKETS
+
/*
- * TODO: for WinCE we need to replace WSAAsyncSelect
+ * DONE: for WinCE we need to replace WSAAsyncSelect
* (Windows message-based notification of network events for a socket)
* with another mechanism.
- * We may need to have a separate thread that polls for socket events
- * using select() and sends a message to the main thread.
- */
-
-/*
- * PLEASE don't put C++ comments here - this is a C source file.
+ * As WSAAsyncSelect is not present on WinCE, it now uses
+ * WSACreateEvent, WSAEventSelect, WSAWaitForMultipleEvents and WSAEnumNetworkEvents.
+ * When enabling eventhandling for a socket a new thread it created that keeps track of the events
+ * and posts a messageto the hidden window to use the standard message loop.
*/
/* including rasasync.h (included from windows.h itself included from
* RPCNOTIFICATION_ROUTINE
*/
#ifdef _MSC_VER
-# pragma warning(disable:4115) /* named type definition in parentheses */
-#endif
-
-/* This needs to be before the wx/defs/h inclusion
- * for some reason
- */
-
-#ifdef __WXWINCE__
-#include <windows.h>
+# pragma warning(disable:4115) /* named type definition in parentheses */
#endif
-#ifndef __GSOCKET_STANDALONE__
-# include "wx/platform.h"
-# include "wx/setup.h"
-#endif
-
-#if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
-
-#ifndef __GSOCKET_STANDALONE__
-
-#include "wx/msw/gsockmsw.h"
#include "wx/gsocket.h"
+#include "wx/apptrait.h"
+#include "wx/link.h"
-HINSTANCE wxGetInstance(void);
-#define INSTANCE wxGetInstance()
+wxFORCE_LINK_THIS_MODULE(gsockmsw)
-#else
-
-#include "gsockmsw.h"
-#include "gsocket.h"
-
-/* If not using wxWindows, a global var called hInst must
- * be available and it must contain the app's instance
- * handle.
- */
-#define INSTANCE hInst
-
-#endif /* __GSOCKET_STANDALONE__ */
+extern "C" WXDLLIMPEXP_BASE HINSTANCE wxGetInstance();
+#define INSTANCE wxGetInstance()
-#ifndef __WXWINCE__
-#include <assert.h>
-#else
-#define assert(x)
+#ifdef __WXWINCE__
#include <winsock.h>
#include "wx/msw/wince/net.h"
+#include "wx/hashmap.h"
+WX_DECLARE_HASH_MAP(int,bool,wxIntegerHash,wxIntegerEqual,SocketHash);
#endif
#include <string.h>
#define CLASSNAME TEXT("_GSocket_Internal_Window_Class")
/* implemented in utils.cpp */
-extern WXDLLIMPEXP_BASE HWND
+extern "C" WXDLLIMPEXP_BASE HWND
wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
/* Maximum number of different GSocket objects at a given time.
#error "MAXSOCKETS is too big!"
#endif
+#ifndef __WXWINCE__
+typedef int (PASCAL *WSAAsyncSelectFunc)(SOCKET,HWND,u_int,long);
+#else
+/* Typedef the needed function prototypes and the WSANETWORKEVENTS structure
+*/
+typedef struct _WSANETWORKEVENTS {
+ long lNetworkEvents;
+ int iErrorCode[10];
+} WSANETWORKEVENTS, FAR * LPWSANETWORKEVENTS;
+typedef HANDLE (PASCAL *WSACreateEventFunc)();
+typedef int (PASCAL *WSAEventSelectFunc)(SOCKET,HANDLE,long);
+typedef int (PASCAL *WSAWaitForMultipleEventsFunc)(long,HANDLE,BOOL,long,BOOL);
+typedef int (PASCAL *WSAEnumNetworkEventsFunc)(SOCKET,HANDLE,LPWSANETWORKEVENTS);
+#endif //__WXWINCE__
+
+LRESULT CALLBACK _GSocket_Internal_WinProc(HWND, UINT, WPARAM, LPARAM);
/* Global variables */
-extern HINSTANCE INSTANCE;
static HWND hWin;
static CRITICAL_SECTION critical;
static GSocket* socketList[MAXSOCKETS];
static int firstAvailable;
+#ifndef __WXWINCE__
+static WSAAsyncSelectFunc gs_WSAAsyncSelect = NULL;
+#else
+static SocketHash socketHash;
+static unsigned int currSocket;
+HANDLE hThread[MAXSOCKETS];
+static WSACreateEventFunc gs_WSACreateEvent = NULL;
+static WSAEventSelectFunc gs_WSAEventSelect = NULL;
+static WSAWaitForMultipleEventsFunc gs_WSAWaitForMultipleEvents = NULL;
+static WSAEnumNetworkEventsFunc gs_WSAEnumNetworkEvents = NULL;
+/* This structure will be used to pass data on to the thread that handles socket events.
+*/
+typedef struct thread_data{
+ HWND hEvtWin;
+ unsigned long msgnumber;
+ unsigned long fd;
+ unsigned long lEvent;
+}thread_data;
+#endif
+
+static HMODULE gs_wsock32dll = 0;
+
+
+#ifdef __WXWINCE__
+/* This thread handles socket events on WinCE using WSAEventSelect() as WSAAsyncSelect is not supported.
+* When an event occures for the socket, it is checked what kind of event happend and the correct message gets posted
+* so that the hidden window can handle it as it would in other MSW builds.
+*/
+DWORD WINAPI SocketThread(LPVOID data)
+{
+ WSANETWORKEVENTS NetworkEvents;
+ thread_data* d = (thread_data *)data;
+
+ HANDLE NetworkEvent = gs_WSACreateEvent();
+ gs_WSAEventSelect(d->fd, NetworkEvent, d->lEvent);
+
+ while(socketHash[d->fd] == true)
+ {
+ if ((gs_WSAWaitForMultipleEvents(1, &NetworkEvent, FALSE,INFINITE, FALSE)) == WAIT_FAILED)
+ {
+ printf("WSAWaitForMultipleEvents failed with error %d\n", WSAGetLastError());
+ return 0;
+ }
+ if (gs_WSAEnumNetworkEvents(d->fd ,NetworkEvent, &NetworkEvents) == SOCKET_ERROR)
+ {
+ printf("WSAEnumNetworkEvents failed with error %d\n", WSAGetLastError());
+ return 0;
+ }
+
+ long flags = NetworkEvents.lNetworkEvents;
+ if (flags & FD_READ)
+ ::PostMessage(d->hEvtWin, d->msgnumber,d->fd, FD_READ);
+ if (flags & FD_WRITE)
+ ::PostMessage(d->hEvtWin, d->msgnumber,d->fd, FD_WRITE);
+ if (flags & FD_OOB)
+ ::PostMessage(d->hEvtWin, d->msgnumber,d->fd, FD_OOB);
+ if (flags & FD_ACCEPT)
+ ::PostMessage(d->hEvtWin, d->msgnumber,d->fd, FD_ACCEPT);
+ if (flags & FD_CONNECT)
+ ::PostMessage(d->hEvtWin, d->msgnumber,d->fd, FD_CONNECT);
+ if (flags & FD_CLOSE)
+ ::PostMessage(d->hEvtWin, d->msgnumber,d->fd, FD_CLOSE);
+
+ }
+ gs_WSAEventSelect(d->fd, NetworkEvent, 0);
+ ExitThread(0);
+ return 0;
+}
+#endif
+
+// ----------------------------------------------------------------------------
+// MSW implementation of GSocketManager
+// ----------------------------------------------------------------------------
+
+class GSocketMSWManager : public GSocketManager
+{
+public:
+ virtual bool OnInit();
+ virtual void OnExit();
+
+ virtual bool Init_Socket(GSocket *socket);
+ virtual void Destroy_Socket(GSocket *socket);
+
+ virtual void Install_Callback(GSocket *socket, GSocketEvent event);
+ virtual void Uninstall_Callback(GSocket *socket, GSocketEvent event);
+
+ virtual void Enable_Events(GSocket *socket);
+ virtual void Disable_Events(GSocket *socket);
+};
+
/* Global initializers */
-int _GSocket_GUI_Init(void)
+bool GSocketMSWManager::OnInit()
{
static LPCTSTR pclassname = NULL;
int i;
/* Create internal window for event notifications */
hWin = wxCreateHiddenWindow(&pclassname, CLASSNAME, _GSocket_Internal_WinProc);
if (!hWin)
- return FALSE;
+ return false;
/* Initialize socket list */
InitializeCriticalSection(&critical);
}
firstAvailable = 0;
- return TRUE;
+ /* Load WSAAsyncSelect from wsock32.dll (we don't link against it
+ statically to avoid dependency on wsock32.dll for apps that don't use
+ sockets): */
+#ifndef __WXWINCE__
+ gs_wsock32dll = LoadLibrary(wxT("wsock32.dll"));
+ if (!gs_wsock32dll)
+ return false;
+ gs_WSAAsyncSelect =(WSAAsyncSelectFunc)GetProcAddress(gs_wsock32dll,
+ "WSAAsyncSelect");
+ if (!gs_WSAAsyncSelect)
+ return false;
+#else
+/* On WinCE we load ws2.dll which will provide the needed functions.
+*/
+ gs_wsock32dll = LoadLibrary(wxT("ws2.dll"));
+ if (!gs_wsock32dll)
+ return false;
+ gs_WSAEventSelect =(WSAEventSelectFunc)GetProcAddress(gs_wsock32dll,
+ wxT("WSAEventSelect"));
+ if (!gs_WSAEventSelect)
+ return false;
+
+ gs_WSACreateEvent =(WSACreateEventFunc)GetProcAddress(gs_wsock32dll,
+ wxT("WSACreateEvent"));
+ if (!gs_WSACreateEvent)
+ return false;
+
+ gs_WSAWaitForMultipleEvents =(WSAWaitForMultipleEventsFunc)GetProcAddress(gs_wsock32dll,
+ wxT("WSAWaitForMultipleEvents"));
+ if (!gs_WSAWaitForMultipleEvents)
+ return false;
+
+ gs_WSAEnumNetworkEvents =(WSAEnumNetworkEventsFunc)GetProcAddress(gs_wsock32dll,
+ wxT("WSAEnumNetworkEvents"));
+ if (!gs_WSAEnumNetworkEvents)
+ return false;
+
+ currSocket = 0;
+#endif
+
+ return true;
}
-void _GSocket_GUI_Cleanup(void)
+void GSocketMSWManager::OnExit()
{
+#ifdef __WXWINCE__
+/* Delete the threads here */
+ for(unsigned int i=0; i < currSocket; i++)
+ CloseHandle(hThread[i]);
+#endif
/* Destroy internal window */
DestroyWindow(hWin);
UnregisterClass(CLASSNAME, INSTANCE);
+ /* Unlock wsock32.dll */
+ if (gs_wsock32dll)
+ {
+ FreeLibrary(gs_wsock32dll);
+ gs_wsock32dll = 0;
+ }
+
/* Delete critical section */
DeleteCriticalSection(&critical);
}
/* Per-socket GUI initialization / cleanup */
-int _GSocket_GUI_Init_Socket(GSocket *socket)
+bool GSocketMSWManager::Init_Socket(GSocket *socket)
{
int i;
if (i == firstAvailable) /* abort! */
{
LeaveCriticalSection(&critical);
- return FALSE;
+ return false;
}
}
socketList[i] = socket;
LeaveCriticalSection(&critical);
- return TRUE;
+ return true;
}
-void _GSocket_GUI_Destroy_Socket(GSocket *socket)
+void GSocketMSWManager::Destroy_Socket(GSocket *socket)
{
/* Remove the socket from the list */
EnterCriticalSection(&critical);
- socketList[(socket->m_msgnumber - WM_USER)] = NULL;
+
+ const int msgnum = socket->m_msgnumber;
+ if ( msgnum )
+ {
+ // we need to remove any pending messages for this socket to avoid having
+ // them sent to a new socket which could reuse the same message number as
+ // soon as we destroy this one
+ MSG msg;
+ while ( ::PeekMessage(&msg, hWin, msgnum, msgnum, PM_REMOVE) )
+ ;
+
+ socketList[msgnum - WM_USER] = NULL;
+ }
+ //else: the socket has never been created successfully
+
LeaveCriticalSection(&critical);
}
+void GSocketMSWManager::Install_Callback(GSocket * WXUNUSED(socket),
+ GSocketEvent WXUNUSED(event))
+{
+ wxFAIL_MSG( _T("not used under MSW") );
+}
+
+void GSocketMSWManager::Uninstall_Callback(GSocket * WXUNUSED(socket),
+ GSocketEvent WXUNUSED(event))
+{
+ wxFAIL_MSG( _T("not used under MSW") );
+}
+
/* Windows proc for asynchronous event handling */
LRESULT CALLBACK _GSocket_Internal_WinProc(HWND hWnd,
* destroyed) and for safety, check that the m_fd field
* is what we expect it to be.
*/
- if ((socket != NULL) && (socket->m_fd == wParam))
+ if ((socket != NULL) && ((WPARAM)socket->m_fd == wParam))
{
switch WSAGETSELECTEVENT(lParam)
{
* events for internal processing, but we will only notify users
* when an appropiate callback function has been installed.
*/
-void _GSocket_Enable_Events(GSocket *socket)
+void GSocketMSWManager::Enable_Events(GSocket *socket)
{
- assert (socket != NULL);
-
if (socket->m_fd != INVALID_SOCKET)
{
/* We could probably just subscribe to all events regardless
*/
long lEvent = socket->m_server?
FD_ACCEPT : (FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE);
-
- WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, lEvent);
+#ifndef __WXWINCE__
+ gs_WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, lEvent);
+#else
+/*
+* WinCE creates a thread for socket event handling.
+* All needed parameters get passed through the thread_data structure.
+*/
+
+ thread_data* d = new thread_data;
+ d->lEvent = lEvent;
+ d->hEvtWin = hWin;
+ d->msgnumber = socket->m_msgnumber;
+ d->fd = socket->m_fd;
+ socketHash[socket->m_fd] = true;
+ hThread[currSocket++] = CreateThread(NULL, 0, &SocketThread,(LPVOID)d, 0, NULL);
+#endif
}
}
/* _GSocket_Disable_Events:
* Disable event notifications (when shutdowning the socket)
*/
-void _GSocket_Disable_Events(GSocket *socket)
+void GSocketMSWManager::Disable_Events(GSocket *socket)
{
- assert (socket != NULL);
-
if (socket->m_fd != INVALID_SOCKET)
{
- WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, 0);
+#ifndef __WXWINCE__
+ gs_WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, 0);
+#else
+ //Destroy the thread
+ socketHash[socket->m_fd] = false;
+#endif
}
}
-#else /* !wxUSE_SOCKETS */
-
-/*
- * Translation unit shouldn't be empty, so include this typedef to make the
- * compiler (VC++ 6.0, for example) happy
- */
-typedef void (*wxDummy)();
+// set the wxBase variable to point to our GSocketManager implementation
+//
+// see comments in wx/msw/apptbase.h for the explanation of why do we do it
+// like this
+static struct ManagerSetter
+{
+ ManagerSetter()
+ {
+ static GSocketMSWManager s_manager;
+ wxAppTraits::SetDefaultSocketManager(&s_manager);
+ }
+} gs_managerSetter;
-#endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
+#endif // wxUSE_SOCKETS
projects / wxWidgets.git / blobdiff