X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f187448d851291f80c1c9d972471949e788ddcf9..236a9de39afa090fdee3cf91cb5364ceca69e3f8:/src/common/socket.cpp diff --git a/src/common/socket.cpp b/src/common/socket.cpp index ffa094fcb5..0f13466c0c 100644 --- a/src/common/socket.cpp +++ b/src/common/socket.cpp @@ -9,6 +9,10 @@ // License: see wxWindows license ///////////////////////////////////////////////////////////////////////////// +// ========================================================================== +// Declarations +// ========================================================================== + #ifdef __GNUG__ #pragma implementation "socket.h" #endif @@ -22,10 +26,6 @@ #if wxUSE_SOCKETS -// ========================================================================== -// Headers and constants -// ========================================================================== - #include "wx/app.h" #include "wx/defs.h" #include "wx/object.h" @@ -44,6 +44,9 @@ #include "wx/sckaddr.h" #include "wx/socket.h" +// -------------------------------------------------------------------------- +// macros and constants +// -------------------------------------------------------------------------- // discard buffer #define MAX_DISCARD_SIZE (10 * 1024) @@ -55,12 +58,8 @@ #define PROCESS_EVENTS() #endif -// use wxPostEvent or not -#define USE_DELAYED_EVENTS 1 - - // -------------------------------------------------------------------------- -// ClassInfos +// wxWin macros // -------------------------------------------------------------------------- IMPLEMENT_CLASS(wxSocketBase, wxObject) @@ -69,20 +68,26 @@ IMPLEMENT_CLASS(wxSocketClient, wxSocketBase) IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase) IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent) +// -------------------------------------------------------------------------- +// private classes +// -------------------------------------------------------------------------- + class wxSocketState : public wxObject { public: - bool m_notify_state; - wxSocketEventFlags m_neededreq; wxSocketFlags m_flags; + 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() {} }; - // ========================================================================== // wxSocketBase // ========================================================================== @@ -116,10 +121,12 @@ void wxSocketBase::Init() m_id = -1; m_handler = NULL; m_clientData = NULL; - m_notify_state = FALSE; - m_neededreq = 0; + m_notify = FALSE; + m_eventmask = 0; +#if WXWIN_COMPATIBILITY m_cbk = NULL; m_cdata = NULL; +#endif // WXWIN_COMPATIBILITY } wxSocketBase::wxSocketBase() @@ -166,9 +173,12 @@ bool wxSocketBase::Destroy() // Shutdown and close the socket Close(); + // Supress events from now on + Notify(FALSE); + #if wxUSE_GUI - if ( wxPendingDelete.Member(this) ) - wxPendingDelete.Append(this); + if ( !wxPendingDelete.Member(this) ) + wxPendingDelete.Append(this); #else delete this; #endif @@ -176,9 +186,8 @@ bool wxSocketBase::Destroy() return TRUE; } - // -------------------------------------------------------------------------- -// Basic IO operations +// Basic IO calls // -------------------------------------------------------------------------- // The following IO operations update m_error and m_lcount: @@ -189,7 +198,7 @@ bool wxSocketBase::Destroy() bool wxSocketBase::Close() { // Interrupt pending waits - InterruptAllWaits(); + InterruptWait(); if (m_socket) { @@ -457,7 +466,7 @@ wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes) break; ret = GSocket_Write(m_socket, (const char *)buffer, nbytes); - + if (ret > 0) { total += ret; @@ -588,7 +597,8 @@ wxSocketBase& wxSocketBase::Discard() // timeout elapses. The polling loop calls PROCESS_EVENTS(), so // this won't block the GUI. -bool wxSocketBase::_Wait(long seconds, long milliseconds, +bool wxSocketBase::_Wait(long seconds, + long milliseconds, wxSocketEventFlags flags) { GSocketEventFlags result; @@ -607,14 +617,12 @@ bool wxSocketBase::_Wait(long seconds, long milliseconds, else timeout = m_timeout * 1000; - // Active polling (without using events) + // Wait in an active polling loop. // - // NOTE: this duplicates some of the code in OnRequest (lost - // connection and connection establishment handling) but - // this doesn't hurt. It has to be here because the event - // might be a bit delayed, and it has to be in OnRequest - // as well because maybe the Wait functions are not being - // used. + // NOTE: We duplicate some of the code in OnRequest, but this doesn't + // hurt. It has to be here because the (GSocket) event might arrive + // a bit delayed, and it has to be in OnRequest as well because we + // don't know whether the Wait functions are being used. // // Do this at least once (important if timeout == 0, when // we are just polling). Also, if just polling, do not yield. @@ -645,7 +653,7 @@ bool wxSocketBase::_Wait(long seconds, long milliseconds, { m_connected = FALSE; m_establishing = FALSE; - return (flags & GSOCK_LOST_FLAG); + return (flags & GSOCK_LOST_FLAG) != 0; } // Wait more? @@ -737,11 +745,14 @@ void wxSocketBase::SaveState() state = new wxSocketState(); - state->m_notify_state = m_notify_state; - state->m_neededreq = m_neededreq; - state->m_flags = m_flags; - state->m_cbk = m_cbk; - state->m_cdata = m_cdata; + state->m_flags = m_flags; + 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); } @@ -757,11 +768,14 @@ void wxSocketBase::RestoreState() state = (wxSocketState *)node->Data(); - SetFlags(state->m_flags); - m_cbk = state->m_cbk; - m_cdata = state->m_cdata; - m_neededreq = state->m_neededreq; - Notify(state->m_notify_state); + 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; delete state; @@ -789,6 +803,8 @@ void wxSocketBase::SetFlags(wxSocketFlags flags) // Callbacks (now obsolete - use events instead) // -------------------------------------------------------------------------- +#if WXWIN_COMPATIBILITY + wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_) { wxSockCbk old_cbk = cbk_; @@ -805,31 +821,47 @@ char *wxSocketBase::CallbackData(char *data) return old_data; } +#endif // WXWIN_COMPATIBILITY + // -------------------------------------------------------------------------- // Event handling // -------------------------------------------------------------------------- -// Callback function from GSocket. All events are internally -// monitored, but users only get these they are interested in. +// A note on how events are processed, which is probably the most +// difficult thing to get working right while keeping the same API +// and functionality for all platforms. +// +// When GSocket detects an event, it calls wx_socket_callback, which in +// turn just calls wxSocketBase::OnRequest in the corresponding wxSocket +// object. OnRequest does some housekeeping, and if the event is to be +// propagated to the user, it creates a new wxSocketEvent object and +// posts it. The event is not processed immediately, but delayed with +// AddPendingEvent instead. This is necessary in order to decouple the +// event processing from wx_socket_callback; otherwise, subsequent IO +// calls made from the user event handler would fail, as gtk callbacks +// are not reentrant. +// +// Note that, unlike events, user callbacks (now deprecated) are _not_ +// 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 notify, + GSocketEvent notification, char *cdata) { wxSocketBase *sckobj = (wxSocketBase *)cdata; - sckobj->OnRequest((wxSocketNotify) notify); + sckobj->OnRequest((wxSocketNotify) notification); } - -void wxSocketBase::OnRequest(wxSocketNotify req_evt) +void wxSocketBase::OnRequest(wxSocketNotify notification) { - // This duplicates some code in _Wait, but this doesn't - // hurt. It has to be here because we don't know whether - // the Wait functions will be used, and it has to be in - // _Wait as well because the event might be a bit delayed. + // NOTE: We duplicate some of the code in _Wait, but this doesn't + // hurt. It has to be here because the (GSocket) event might arrive + // a bit delayed, and it has to be in _Wait as well because we don't + // know whether the Wait functions are being used. - switch(req_evt) + switch(notification) { case wxSOCKET_CONNECTION: m_establishing = FALSE; @@ -862,7 +894,7 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt) // Schedule the event wxSocketEventFlags flag = -1; - switch (req_evt) + switch (notification) { case GSOCK_INPUT: flag = GSOCK_INPUT_FLAG; break; case GSOCK_OUTPUT: flag = GSOCK_OUTPUT_FLAG; break; @@ -870,34 +902,33 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt) case GSOCK_LOST: flag = GSOCK_LOST_FLAG; break; } - if (((m_neededreq & flag) == flag) && m_notify_state) + if (((m_eventmask & flag) == flag) && m_notify) { - wxSocketEvent event(m_id); - - event.m_event = req_evt; - event.m_clientData = m_clientData; - event.SetEventObject(this); - if (m_handler) -#if USE_DELAYED_EVENTS + { + wxSocketEvent event(m_id); + event.m_event = notification; + event.m_clientData = m_clientData; + event.SetEventObject(this); + m_handler->AddPendingEvent(event); -#else - m_handler->ProcessEvent(event); -#endif + } +#if WXWIN_COMPATIBILITY if (m_cbk) - m_cbk(*this, req_evt, m_cdata); + m_cbk(*this, notification, m_cdata); +#endif // WXWIN_COMPATIBILITY } } void wxSocketBase::Notify(bool notify) { - m_notify_state = notify; + m_notify = notify; } void wxSocketBase::SetNotify(wxSocketEventFlags flags) { - m_neededreq = flags; + m_eventmask = flags; } void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id) @@ -906,7 +937,6 @@ void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id) m_id = id; } - // -------------------------------------------------------------------------- // Pushback buffer // -------------------------------------------------------------------------- @@ -1201,12 +1231,11 @@ void wxSocketEvent::CopyObject(wxObject& object_dest) const event->m_clientData = m_clientData; } - // ========================================================================== // wxSocketModule // ========================================================================== -class WXDLLEXPORT wxSocketModule: public wxModule +class WXDLLEXPORT wxSocketModule : public wxModule { DECLARE_DYNAMIC_CLASS(wxSocketModule)