X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5c9eff305505d6e3a63026c542004d518d997d2a..42497f30ebde52ebd530a3c252eec45791669287:/src/common/socket.cpp diff --git a/src/common/socket.cpp b/src/common/socket.cpp index a3eec9aae2..6e40e90f91 100644 --- a/src/common/socket.cpp +++ b/src/common/socket.cpp @@ -6,14 +6,14 @@ // Copyright: (C) 1999-1997, Guilhem Lavaux // (C) 2000-1999, Guillermo Rodriguez Garcia // RCS_ID: $Id$ -// License: see wxWindows license +// License: see wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ========================================================================== // Declarations // ========================================================================== -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "socket.h" #endif @@ -27,6 +27,7 @@ #if wxUSE_SOCKETS #include "wx/app.h" +#include "wx/apptrait.h" #include "wx/defs.h" #include "wx/object.h" #include "wx/string.h" @@ -37,13 +38,13 @@ #include "wx/intl.h" #include "wx/event.h" -#if wxUSE_GUI - #include "wx/gdicmn.h" // for wxPendingDelete -#endif // wxUSE_GUI - #include "wx/sckaddr.h" #include "wx/socket.h" +// DLL options compatibility check: +#include "wx/build.h" +WX_CHECK_BUILD_OPTIONS("wxNet") + // -------------------------------------------------------------------------- // macros and constants // -------------------------------------------------------------------------- @@ -51,12 +52,26 @@ // discard buffer #define MAX_DISCARD_SIZE (10 * 1024) -// what to do within waits -#if wxUSE_GUI - #define PROCESS_EVENTS() wxYield() -#else - #define PROCESS_EVENTS() -#endif +// what to do within waits: we have 2 cases: from the main thread itself we +// have to call wxYield() to let the events (including the GUI events and the +// low-level (not wxWindows) events from GSocket) be processed. From another +// thread it is enough to just call wxThread::Yield() which will give away the +// rest of our time slice: the explanation is that the events will be processed +// by the main thread anyhow, without calling wxYield(), but we don't want to +// eat the CPU time uselessly while sitting in the loop waiting for the data +#if wxUSE_THREADS + #define PROCESS_EVENTS() \ + { \ + if ( wxThread::IsMain() ) \ + wxYield(); \ + else \ + wxThread::Yield(); \ + } +#else // !wxUSE_THREADS + #define PROCESS_EVENTS() wxYield() +#endif // wxUSE_THREADS/!wxUSE_THREADS + +#define wxTRACE_Socket _T("wxSocket") // -------------------------------------------------------------------------- // wxWin macros @@ -79,19 +94,61 @@ public: wxSocketEventFlags m_eventmask; bool m_notify; void *m_clientData; -#if WXWIN_COMPATIBILITY - wxSocketBase::wxSockCbk m_cbk; - char *m_cdata; -#endif // WXWIN_COMPATIBILITY public: wxSocketState() : wxObject() {} + + DECLARE_NO_COPY_CLASS(wxSocketState) }; // ========================================================================== // wxSocketBase // ========================================================================== +// -------------------------------------------------------------------------- +// Initialization and shutdown +// -------------------------------------------------------------------------- + +// FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses +// to m_countInit with a crit section +size_t wxSocketBase::m_countInit = 0; + +bool wxSocketBase::IsInitialized() +{ + return m_countInit > 0; +} + +bool wxSocketBase::Initialize() +{ + if ( !m_countInit++ ) + { + wxAppTraits *traits = wxAppConsole::GetInstance() ? + wxAppConsole::GetInstance()->GetTraits() : NULL; + GSocketGUIFunctionsTable *functions = + traits ? traits->GetSocketGUIFunctionsTable() : NULL; + GSocket_SetGUIFunctions(functions); + + if ( !GSocket_Init() ) + { + m_countInit--; + + return FALSE; + } + } + + return TRUE; +} + +void wxSocketBase::Shutdown() +{ + // we should be initialized + wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") ); + if ( !--m_countInit ) + { + GSocket_Cleanup(); + } +} + // -------------------------------------------------------------------------- // Ctor and dtor // -------------------------------------------------------------------------- @@ -123,10 +180,13 @@ void wxSocketBase::Init() m_clientData = NULL; m_notify = FALSE; m_eventmask = 0; -#if WXWIN_COMPATIBILITY - m_cbk = NULL; - m_cdata = NULL; -#endif // WXWIN_COMPATIBILITY + + if ( !IsInitialized() ) + { + // this Initialize() will be undone by wxSocketModule::OnExit(), all the + // other calls to it should be matched by a call to Shutdown() + Initialize(); + } } wxSocketBase::wxSocketBase() @@ -146,9 +206,9 @@ wxSocketBase::~wxSocketBase() { // Just in case the app called Destroy() *and* then deleted // the socket immediately: don't leave dangling pointers. -#if wxUSE_GUI - wxPendingDelete.DeleteObject(this); -#endif + wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; + if ( traits ) + traits->RemoveFromPendingDelete(this); // Shutdown and close the socket if (!m_beingDeleted) @@ -176,12 +236,18 @@ bool wxSocketBase::Destroy() // Supress events from now on Notify(FALSE); -#if wxUSE_GUI - if ( !wxPendingDelete.Member(this) ) - wxPendingDelete.Append(this); -#else - delete this; -#endif + // schedule this object for deletion + wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; + if ( traits ) + { + // let the traits object decide what to do with us + traits->ScheduleForDestroy(this); + } + else // no app or no traits + { + // in wxBase we might have no app object at all, don't leak memory + delete this; + } return TRUE; } @@ -237,7 +303,6 @@ wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes) wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes) { int total; - int ret = 1; // Try the pushback buffer first total = GetPushback(buffer, nbytes, FALSE); @@ -259,6 +324,7 @@ wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes) // wxSOCKET_BLOCK // wxSOCKET_NONE // + int ret; if (m_flags & wxSOCKET_NOWAIT) { GSocket_SetNonBlocking(m_socket, 1); @@ -438,7 +504,6 @@ wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes) wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) { wxUint32 total = 0; - int ret = 1; // If the socket is invalid or parameters are ill, return immediately if (!m_socket || !buffer || !nbytes) @@ -450,6 +515,7 @@ wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) // wxSOCKET_BLOCK // wxSOCKET_NONE // + int ret; if (m_flags & wxSOCKET_NOWAIT) { GSocket_SetNonBlocking(m_socket, 1); @@ -463,7 +529,7 @@ wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) { bool more = TRUE; - while (more) + while (more) { if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() ) break; @@ -477,18 +543,6 @@ wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) buffer = (const char *)buffer + ret; } - // Yes, this can happen even when the socket selects as writable! - // (probably due to a buggy kernel; Linux 2.0.36 seems to do this). - // Fake it so that we stay in the loop, but do it only for ret < 0, - // as ret == 0 means that the socket is closed. I'm not applying - // this hack for read calls as it seems unnecessary there. - // - if ((ret < 0) && (GSocket_GetError(m_socket) == GSOCK_WOULDBLOCK)) - { - wxLogDebug(_("wxSocket: working around select() bug in Write.")); - continue; - } - // If we got here and wxSOCKET_WAITALL is not set, we can leave // now. Otherwise, wait until we send all the data or until there // is an error. @@ -504,7 +558,6 @@ wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes) { wxUint32 total; bool error; - int old_flags; struct { unsigned char sig[4]; @@ -516,7 +569,6 @@ wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes) error = TRUE; total = 0; - old_flags = m_flags; SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL); msg.sig[0] = (unsigned char) 0xad; @@ -570,7 +622,6 @@ wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes) wxSocketBase& wxSocketBase::Discard() { - int old_flags; char *buffer = new char[MAX_DISCARD_SIZE]; wxUint32 ret; wxUint32 total = 0; @@ -578,7 +629,6 @@ wxSocketBase& wxSocketBase::Discard() // Mask read events m_reading = TRUE; - old_flags = m_flags; SetFlags(wxSOCKET_NOWAIT); do @@ -628,6 +678,10 @@ bool wxSocketBase::_Wait(long seconds, else timeout = m_timeout * 1000; +#if !defined(wxUSE_GUI) || !wxUSE_GUI + GSocket_SetTimeout(m_socket, timeout); +#endif + // Wait in an active polling loop. // // NOTE: We duplicate some of the code in OnRequest, but this doesn't @@ -726,6 +780,12 @@ bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const return FALSE; peer = GSocket_GetPeer(m_socket); + + // copying a null address would just trigger an assert anyway + + if (!peer) + return FALSE; + addr_man.SetAddress(peer); GAddress_destroy(peer); @@ -760,35 +820,27 @@ void wxSocketBase::SaveState() state->m_notify = m_notify; state->m_eventmask = m_eventmask; state->m_clientData = m_clientData; -#if WXWIN_COMPATIBILITY - state->m_cbk = m_cbk; - state->m_cdata = m_cdata; -#endif // WXWIN_COMPATIBILITY m_states.Append(state); } void wxSocketBase::RestoreState() { - wxNode *node; + wxList::compatibility_iterator node; wxSocketState *state; - node = m_states.Last(); + node = m_states.GetLast(); if (!node) return; - state = (wxSocketState *)node->Data(); + state = (wxSocketState *)node->GetData(); m_flags = state->m_flags; m_notify = state->m_notify; m_eventmask = state->m_eventmask; m_clientData = state->m_clientData; -#if WXWIN_COMPATIBILITY - m_cbk = state->m_cbk; - m_cdata = state->m_cdata; -#endif // WXWIN_COMPATIBILITY - - delete node; + + m_states.Erase(node); delete state; } @@ -810,30 +862,6 @@ void wxSocketBase::SetFlags(wxSocketFlags flags) } -// -------------------------------------------------------------------------- -// Callbacks (now obsolete - use events instead) -// -------------------------------------------------------------------------- - -#if WXWIN_COMPATIBILITY - -wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_) -{ - wxSockCbk old_cbk = cbk_; - - m_cbk = cbk_; - return old_cbk; -} - -char *wxSocketBase::CallbackData(char *data) -{ - char *old_data = m_cdata; - - m_cdata = data; - return old_data; -} - -#endif // WXWIN_COMPATIBILITY - // -------------------------------------------------------------------------- // Event handling // -------------------------------------------------------------------------- @@ -856,9 +884,10 @@ char *wxSocketBase::CallbackData(char *data) // decoupled from wx_socket_callback and thus they suffer from a variety // of problems. Avoid them where possible and use events instead. -static void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket), - GSocketEvent notification, - char *cdata) +extern "C" +void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket), + GSocketEvent notification, + char *cdata) { wxSocketBase *sckobj = (wxSocketBase *)cdata; @@ -905,6 +934,7 @@ void wxSocketBase::OnRequest(wxSocketNotify notification) // Schedule the event wxSocketEventFlags flag = 0; + wxUnusedVar(flag); switch (notification) { case GSOCK_INPUT: flag = GSOCK_INPUT_FLAG; break; @@ -927,11 +957,6 @@ void wxSocketBase::OnRequest(wxSocketNotify notification) m_handler->AddPendingEvent(event); } - -#if WXWIN_COMPATIBILITY - if (m_cbk) - m_cbk(*this, notification, m_cdata); -#endif // WXWIN_COMPATIBILITY } } @@ -1004,7 +1029,7 @@ wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek) // ========================================================================== -// wxSocketServer +// wxSocketServer // ========================================================================== // -------------------------------------------------------------------------- @@ -1015,26 +1040,32 @@ wxSocketServer::wxSocketServer(wxSockAddress& addr_man, wxSocketFlags flags) : wxSocketBase(flags, wxSOCKET_SERVER) { - // Create the socket - m_socket = GSocket_new(); + wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") ); - if (!m_socket) - return; + m_socket = GSocket_new(); - // Setup the socket as server - GSocket_SetLocal(m_socket, addr_man.GetAddress()); - if (GSocket_SetServer(m_socket) != GSOCK_NOERROR) - { - GSocket_destroy(m_socket); - m_socket = NULL; - return; - } + if (!m_socket) + { + wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") ); + return; + } - GSocket_SetTimeout(m_socket, m_timeout * 1000); - GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | - GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, - wx_socket_callback, (char *)this); + // Setup the socket as server + GSocket_SetLocal(m_socket, addr_man.GetAddress()); + if (GSocket_SetServer(m_socket) != GSOCK_NOERROR) + { + GSocket_destroy(m_socket); + m_socket = NULL; + + wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") ); + return; + } + + GSocket_SetTimeout(m_socket, m_timeout * 1000); + GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG | + GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG, + wx_socket_callback, (char *)this); } // -------------------------------------------------------------------------- @@ -1082,7 +1113,10 @@ wxSocketBase *wxSocketServer::Accept(bool wait) sock->SetFlags(m_flags); if (!AcceptWith(*sock, wait)) - return NULL; + { + sock->Destroy(); + sock = NULL; + } return sock; } @@ -1226,39 +1260,32 @@ wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr, return (*this); } -// ========================================================================== -// wxSocketEvent -// ========================================================================== - -wxSocketEvent::wxSocketEvent(int id) : wxEvent(id) -{ - SetEventType( (wxEventType)wxEVT_SOCKET ); -} - -void wxSocketEvent::CopyObject(wxObject& object_dest) const -{ - wxSocketEvent *event = (wxSocketEvent *)&object_dest; - - wxEvent::CopyObject(object_dest); - - event->m_event = m_event; - event->m_clientData = m_clientData; -} - // ========================================================================== // wxSocketModule // ========================================================================== -class WXDLLEXPORT wxSocketModule : public wxModule +class wxSocketModule : public wxModule { - DECLARE_DYNAMIC_CLASS(wxSocketModule) - public: - bool OnInit() { return GSocket_Init(); } - void OnExit() { GSocket_Cleanup(); } + virtual bool OnInit() + { + // wxSocketBase will call GSocket_Init() itself when/if needed + return TRUE; + } + + virtual void OnExit() + { + if ( wxSocketBase::IsInitialized() ) + wxSocketBase::Shutdown(); + } + +private: + DECLARE_DYNAMIC_CLASS(wxSocketModule) }; IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule) #endif // wxUSE_SOCKETS + +// vi:sts=4:sw=4:et