X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/32524c8fb857819d408fc4b90fd00ce96d65f6db..ff55f8377ba8965bee36d1221501a3868da952e9:/src/msw/gsockmsw.cpp diff --git a/src/msw/gsockmsw.cpp b/src/msw/gsockmsw.cpp index 4e2622f8f4..3ca8b48349 100644 --- a/src/msw/gsockmsw.cpp +++ b/src/msw/gsockmsw.cpp @@ -1,22 +1,31 @@ /* ------------------------------------------------------------------------- - * Project: GSocket (Generic Socket) - * Name: gsockmsw.c - * Author: Guillermo Rodriguez Garcia - * 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 + * 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 @@ -27,56 +36,20 @@ # 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__ - /* windows.h results in tons of warnings at max warning level */ -# ifdef _MSC_VER -# pragma warning(push, 1) -# endif -# include -# ifdef _MSC_VER -# pragma warning(pop) -# pragma warning(disable:4514) -# endif -#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" -extern "C" HINSTANCE wxGetInstance(void); -#define INSTANCE wxGetInstance() - -#else - -#include "gsockmsw.h" -#include "gsocket.h" - -/* If not using wxWidgets, a global var called hInst must - * be available and it must contain the app's instance - * handle. - */ -#define INSTANCE hInst +wxFORCE_LINK_THIS_MODULE(gsockmsw) -#endif /* __GSOCKET_STANDALONE__ */ +extern "C" WXDLLIMPEXP_BASE HINSTANCE wxGetInstance(); +#define INSTANCE wxGetInstance() -#ifndef __WXWINCE__ -#include -#else -#define assert(x) +#ifdef __WXWINCE__ #include #include "wx/msw/wince/net.h" +#include "wx/hashmap.h" +WX_DECLARE_HASH_MAP(int,bool,wxIntegerHash,wxIntegerEqual,SocketHash); #endif #include @@ -107,21 +80,123 @@ wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc); #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; @@ -129,7 +204,7 @@ int _GSocket_GUI_Init(void) /* Create internal window for event notifications */ hWin = wxCreateHiddenWindow(&pclassname, CLASSNAME, _GSocket_Internal_WinProc); if (!hWin) - return FALSE; + return false; /* Initialize socket list */ InitializeCriticalSection(&critical); @@ -143,19 +218,53 @@ int _GSocket_GUI_Init(void) /* 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): */ - gs_wsock32dll = LoadLibraryA("wsock32.dll"); +#ifndef __WXWINCE__ + gs_wsock32dll = LoadLibrary(wxT("wsock32.dll")); if (!gs_wsock32dll) - return FALSE; + return false; gs_WSAAsyncSelect =(WSAAsyncSelectFunc)GetProcAddress(gs_wsock32dll, "WSAAsyncSelect"); if (!gs_WSAAsyncSelect) - return FALSE; + 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; + 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); @@ -173,7 +282,7 @@ void _GSocket_GUI_Cleanup(void) /* Per-socket GUI initialization / cleanup */ -int _GSocket_GUI_Init_Socket(GSocket *socket) +bool GSocketMSWManager::Init_Socket(GSocket *socket) { int i; @@ -188,7 +297,7 @@ int _GSocket_GUI_Init_Socket(GSocket *socket) if (i == firstAvailable) /* abort! */ { LeaveCriticalSection(&critical); - return FALSE; + return false; } } socketList[i] = socket; @@ -197,17 +306,43 @@ int _GSocket_GUI_Init_Socket(GSocket *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, @@ -232,7 +367,7 @@ 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) { @@ -284,10 +419,8 @@ LRESULT CALLBACK _GSocket_Internal_WinProc(HWND hWnd, * 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 @@ -295,30 +428,52 @@ void _GSocket_Enable_Events(GSocket *socket) */ long lEvent = socket->m_server? FD_ACCEPT : (FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE); - +#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) { +#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