diff options
Diffstat (limited to 'win/tclWinSock.c')
| -rw-r--r-- | win/tclWinSock.c | 216 |
1 files changed, 41 insertions, 175 deletions
diff --git a/win/tclWinSock.c b/win/tclWinSock.c index 9ac1a15..ef01fa8 100644 --- a/win/tclWinSock.c +++ b/win/tclWinSock.c @@ -234,7 +234,6 @@ static TcpState * NewSocketInfo(SOCKET socket); static void SocketExitHandler(void *clientData); static LRESULT CALLBACK SocketProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); -static int SocketsEnabled(void); static void TcpAccept(TcpFdList *fds, SOCKET newSocket, address addr); static int WaitForConnect(TcpState *statePtr, int *errorCodePtr); static int WaitForSocketEvent(TcpState *statePtr, int events, @@ -366,23 +365,22 @@ InitializeHostName( Tcl_UtfToLower(Tcl_WCharToUtfDString(wbuf, TCL_INDEX_NONE, &ds)); } else { - if (TclpHasSockets(NULL) == TCL_OK) { - /* - * The buffer size of 256 is recommended by the MSDN page that - * documents gethostname() as being always adequate. - */ + TclInitSockets(); + /* + * The buffer size of 256 is recommended by the MSDN page that + * documents gethostname() as being always adequate. + */ - Tcl_DString inDs; + Tcl_DString inDs; - Tcl_DStringInit(&inDs); - Tcl_DStringSetLength(&inDs, 256); - if (gethostname(Tcl_DStringValue(&inDs), - Tcl_DStringLength(&inDs)) == 0) { - Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&inDs), - TCL_INDEX_NONE, &ds); - } - Tcl_DStringFree(&inDs); + Tcl_DStringInit(&inDs); + Tcl_DStringSetLength(&inDs, 256); + if (gethostname(Tcl_DStringValue(&inDs), + Tcl_DStringLength(&inDs)) == 0) { + Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&inDs), + TCL_INDEX_NONE, &ds); } + Tcl_DStringFree(&inDs); } *encodingPtr = Tcl_GetEncoding(NULL, "utf-8"); @@ -419,11 +417,9 @@ Tcl_GetHostName(void) /* *---------------------------------------------------------------------- * - * TclpHasSockets -- + * TclInitSockets -- * - * This function determines whether sockets are available on the current - * system and returns an error in interp if they are not. Note that - * interp may be NULL. + * This function just calls InitSockets(), but is protected by a mutex. * * Results: * Returns TCL_OK if the system supports sockets, or TCL_ERROR with an @@ -437,24 +433,16 @@ Tcl_GetHostName(void) *---------------------------------------------------------------------- */ -int -TclpHasSockets( - Tcl_Interp *interp) /* Where to write an error message if sockets - * are not present, or NULL if no such message - * is to be written. */ +void +TclInitSockets() { - Tcl_MutexLock(&socketMutex); - InitSockets(); - Tcl_MutexUnlock(&socketMutex); - - if (SocketsEnabled()) { - return TCL_OK; - } - if (interp != NULL) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "sockets are not available on this system", TCL_INDEX_NONE)); + if (!initialized) { + Tcl_MutexLock(&socketMutex); + if (!initialized) { + InitSockets(); + } + Tcl_MutexUnlock(&socketMutex); } - return TCL_ERROR; } /* @@ -779,17 +767,6 @@ TcpInputProc( *errorCodePtr = 0; /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. - */ - - if (!SocketsEnabled()) { - *errorCodePtr = EFAULT; - return -1; - } - - /* * First check to see if EOF was already detected, to prevent calling the * socket stack after the first time EOF is detected. */ @@ -922,17 +899,6 @@ TcpOutputProc( *errorCodePtr = 0; /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. - */ - - if (!SocketsEnabled()) { - *errorCodePtr = EFAULT; - return -1; - } - - /* * Check if there is an async connect running. * For blocking sockets terminate connect, otherwise do one step. * For a non blocking socket return EWOULDBLOCK if connect not terminated @@ -1033,28 +999,20 @@ TcpCloseProc( ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. + * Clean up the OS socket handle. The default Windows setting for a + * socket is SO_DONTLINGER, which does a graceful shutdown in the + * background. */ - if (SocketsEnabled()) { - /* - * Clean up the OS socket handle. The default Windows setting for a - * socket is SO_DONTLINGER, which does a graceful shutdown in the - * background. - */ - - while (statePtr->sockets != NULL) { - TcpFdList *thisfd = statePtr->sockets; + while (statePtr->sockets != NULL) { + TcpFdList *thisfd = statePtr->sockets; - statePtr->sockets = thisfd->next; - if (closesocket(thisfd->fd) == SOCKET_ERROR) { - Tcl_WinConvertError((DWORD) WSAGetLastError()); - errorCode = Tcl_GetErrno(); - } - ckfree(thisfd); + statePtr->sockets = thisfd->next; + if (closesocket(thisfd->fd) == SOCKET_ERROR) { + Tcl_WinConvertError((DWORD) WSAGetLastError()); + errorCode = Tcl_GetErrno(); } + ckfree(thisfd); } if (statePtr->addrlist != NULL) { @@ -1181,20 +1139,6 @@ TcpSetOptionProc( len = strlen(optionName); } - /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. - */ - - if (!SocketsEnabled()) { - if (interp) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "winsock is not initialized", -1)); - } - return TCL_ERROR; - } - sock = statePtr->sockets->fd; if ((len > 1) && (optionName[1] == 'k') && @@ -1281,20 +1225,6 @@ TcpGetOptionProc( #define SUPPRESS_RDNS_VAR "::tcl::unsupported::noReverseDNS" /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. - */ - - if (!SocketsEnabled()) { - if (interp) { - Tcl_SetObjResult(interp, Tcl_NewStringObj( - "winsock is not initialized", -1)); - } - return TCL_ERROR; - } - - /* * Go one step in async connect * * If any error is thrown save it as backround error to report eventually @@ -2017,19 +1947,7 @@ Tcl_OpenTcpClient( struct addrinfo *addrlist = NULL, *myaddrlist = NULL; char channelName[SOCK_CHAN_LENGTH]; - if (TclpHasSockets(interp) != TCL_OK) { - return NULL; - } - - /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. - */ - - if (!SocketsEnabled()) { - return NULL; - } + TclInitSockets(); /* * Do the name lookups for the local and remote addresses. @@ -2103,9 +2021,7 @@ Tcl_MakeTcpClientChannel( char channelName[SOCK_CHAN_LENGTH]; ThreadSpecificData *tsdPtr; - if (TclpHasSockets(NULL) != TCL_OK) { - return NULL; - } + TclInitSockets(); tsdPtr = (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); @@ -2171,19 +2087,7 @@ Tcl_OpenTcpServerEx( const char *errorMsg = NULL; int optvalue, port; - if (TclpHasSockets(interp) != TCL_OK) { - return NULL; - } - - /* - * Check that WinSock is initialized; do not call it if not, to prevent - * system crashes. This can happen at exit time if the exit handler for - * WinSock ran before other exit handlers that want to use sockets. - */ - - if (!SocketsEnabled()) { - return NULL; - } + TclInitSockets(); /* * Construct the addresses for each end of the socket. @@ -2514,55 +2418,19 @@ InitSockets(void) WaitForSingleObject(tsdPtr->readyEvent, INFINITE); - if (tsdPtr->hwnd == NULL) { - goto initFailure; /* Trouble creating the window. */ + if (tsdPtr->hwnd != NULL) { + Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL); + return; } - Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL); - return; - initFailure: - TclpFinalizeSockets(); - initialized = -1; + Tcl_Panic("InitSockets failed"); return; } /* *---------------------------------------------------------------------- * - * SocketsEnabled -- - * - * Check that the WinSock was successfully initialized. - * - * Warning: - * This check was useful in times of Windows98 where WinSock may - * not be available. This is not the case any more. - * This function may be removed with TCL 9.0 - * - * Results: - * 1 if it is. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static int -SocketsEnabled(void) -{ - int enabled; - - Tcl_MutexLock(&socketMutex); - enabled = (initialized == 1); - Tcl_MutexUnlock(&socketMutex); - return enabled; -} - - -/* - *---------------------------------------------------------------------- - * * SocketExitHandler -- * * Callback invoked during exit clean up to delete the socket @@ -3454,9 +3322,7 @@ TcpThreadActionProc( * sockets will not work. */ - Tcl_MutexLock(&socketMutex); - InitSockets(); - Tcl_MutexUnlock(&socketMutex); + TclInitSockets(); tsdPtr = TCL_TSD_INIT(&dataKey); |