X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0cb7e05cd1ffcbb55fea48643fb81e284869ddad..12b5f4b4d2d8a07962da7ba3b78c8c1ec2634a67:/src/common/appbase.cpp diff --git a/src/common/appbase.cpp b/src/common/appbase.cpp index e25ad4e178..740deebb2b 100644 --- a/src/common/appbase.cpp +++ b/src/common/appbase.cpp @@ -1,6 +1,6 @@ /////////////////////////////////////////////////////////////////////////////// // Name: src/common/appbase.cpp -// Purpose: implements wxAppConsole class +// Purpose: implements wxAppConsoleBase class // Author: Vadim Zeitlin // Modified by: // Created: 19.06.2003 (extracted from common/appcmn.cpp) @@ -39,33 +39,30 @@ #include "wx/apptrait.h" #include "wx/cmdline.h" #include "wx/confbase.h" +#include "wx/evtloop.h" #include "wx/filename.h" #include "wx/msgout.h" +#include "wx/ptr_scpd.h" #include "wx/tokenzr.h" +#include "wx/thread.h" +#if wxUSE_EXCEPTIONS && wxUSE_STL + #include + #include +#endif + +#ifndef __WXPALMOS5__ #if !defined(__WXMSW__) || defined(__WXMICROWIN__) #include // for SIGTRAP used by wxTrap() #endif //Win/Unix #include +#endif // ! __WXPALMOS5__ #if wxUSE_FONTMAP #include "wx/fontmap.h" #endif // wxUSE_FONTMAP -#if defined(__DARWIN__) && defined(_MSL_USING_MW_C_HEADERS) && _MSL_USING_MW_C_HEADERS - // For MacTypes.h for Debugger function - #include -#endif - -#if defined(__WXMAC__) - #ifdef __DARWIN__ - #include - #else - #include "wx/mac/private.h" // includes mac headers - #endif -#endif // __WXMAC__ - #ifdef __WXDEBUG__ #if wxUSE_STACKWALKER #include "wx/stackwalk.h" @@ -73,6 +70,8 @@ #include "wx/msw/debughlp.h" #endif #endif // wxUSE_STACKWALKER + + #include "wx/recguard.h" #endif // __WXDEBUG__ // wxABI_VERSION can be defined when compiling applications but it should be @@ -93,11 +92,11 @@ // prepare for showing the assert dialog, use the given traits or // DoShowAssertDialog() as last fallback to really show it static - void ShowAssertDialog(const wxChar *szFile, + void ShowAssertDialog(const wxString& szFile, int nLine, - const wxChar *szFunc, - const wxChar *szCond, - const wxChar *szMsg, + const wxString& szFunc, + const wxString& szCond, + const wxString& szMsg, wxAppTraits *traits = NULL); // turn on the trace masks specified in the env variable WXTRACE @@ -108,23 +107,33 @@ // global vars // ---------------------------------------------------------------------------- -wxAppConsole *wxAppConsole::ms_appInstance = NULL; +wxAppConsole *wxAppConsoleBase::ms_appInstance = NULL; + +wxAppInitializerFunction wxAppConsoleBase::ms_appInitFn = NULL; + +wxSocketManager *wxAppTraitsBase::ms_manager = NULL; + +// ---------------------------------------------------------------------------- +// wxEventLoopPtr +// ---------------------------------------------------------------------------- -wxAppInitializerFunction wxAppConsole::ms_appInitFn = NULL; +// this defines wxEventLoopPtr +wxDEFINE_TIED_SCOPED_PTR_TYPE(wxEventLoopBase) // ============================================================================ -// wxAppConsole implementation +// wxAppConsoleBase implementation // ============================================================================ // ---------------------------------------------------------------------------- // ctor/dtor // ---------------------------------------------------------------------------- -wxAppConsole::wxAppConsole() +wxAppConsoleBase::wxAppConsoleBase() { m_traits = NULL; + m_mainLoop = NULL; - ms_appInstance = this; + ms_appInstance = static_cast(this); #ifdef __WXDEBUG__ SetTraceMasks(); @@ -138,7 +147,7 @@ wxAppConsole::wxAppConsole() #endif } -wxAppConsole::~wxAppConsole() +wxAppConsoleBase::~wxAppConsoleBase() { delete m_traits; } @@ -147,18 +156,18 @@ wxAppConsole::~wxAppConsole() // initilization/cleanup // ---------------------------------------------------------------------------- -bool wxAppConsole::Initialize(int& argcOrig, wxChar **argvOrig) +bool wxAppConsoleBase::Initialize(int& WXUNUSED(argc), wxChar **argv) { #if wxUSE_INTL GetTraits()->SetLocale(); #endif // wxUSE_INTL - // remember the command line arguments - argc = argcOrig; - argv = argvOrig; +#if wxUSE_THREADS + wxHandlersWithPendingEventsLocker = new wxCriticalSection; +#endif #ifndef __WXPALMOS__ - if ( m_appName.empty() && argv ) + if ( m_appName.empty() && argv && argv[0] ) { // the application name is, by default, the name of its executable file wxFileName::SplitPath(argv[0], NULL, &m_appName, NULL); @@ -168,15 +177,33 @@ bool wxAppConsole::Initialize(int& argcOrig, wxChar **argvOrig) return true; } -void wxAppConsole::CleanUp() +wxEventLoopBase *wxAppConsoleBase::CreateMainLoop() +{ + return GetTraits()->CreateEventLoop(); +} + +void wxAppConsoleBase::CleanUp() { + if ( m_mainLoop ) + { + delete m_mainLoop; + m_mainLoop = NULL; + } + + delete wxHandlersWithPendingEvents; + wxHandlersWithPendingEvents = NULL; + +#if wxUSE_THREADS + delete wxHandlersWithPendingEventsLocker; + wxHandlersWithPendingEventsLocker = NULL; +#endif // wxUSE_THREADS } // ---------------------------------------------------------------------------- // OnXXX() callbacks // ---------------------------------------------------------------------------- -bool wxAppConsole::OnInit() +bool wxAppConsoleBase::OnInit() { #if wxUSE_CMDLINE_PARSER wxCmdLineParser parser(argc, argv); @@ -206,32 +233,40 @@ bool wxAppConsole::OnInit() return true; } -int wxAppConsole::OnExit() +int wxAppConsoleBase::OnRun() +{ + return MainLoop(); +} + +int wxAppConsoleBase::OnExit() { #if wxUSE_CONFIG // delete the config object if any (don't use Get() here, but Set() // because Get() could create a new config object) - delete wxConfigBase::Set((wxConfigBase *) NULL); + delete wxConfigBase::Set(NULL); #endif // wxUSE_CONFIG return 0; } -void wxAppConsole::Exit() +void wxAppConsoleBase::Exit() { - exit(-1); + if (m_mainLoop != NULL) + ExitMainLoop(); + else + exit(-1); } // ---------------------------------------------------------------------------- // traits stuff // ---------------------------------------------------------------------------- -wxAppTraits *wxAppConsole::CreateTraits() +wxAppTraits *wxAppConsoleBase::CreateTraits() { return new wxConsoleAppTraits; } -wxAppTraits *wxAppConsole::GetTraits() +wxAppTraits *wxAppConsoleBase::GetTraits() { // FIXME-MT: protect this with a CS? if ( !m_traits ) @@ -244,48 +279,123 @@ wxAppTraits *wxAppConsole::GetTraits() return m_traits; } +/* static */ +wxAppTraits *wxAppConsoleBase::GetTraitsIfExists() +{ + wxAppConsole * const app = GetInstance(); + return app ? app->GetTraits() : NULL; +} + // ---------------------------------------------------------------------------- // event processing // ---------------------------------------------------------------------------- -void wxAppConsole::ProcessPendingEvents() +int wxAppConsoleBase::MainLoop() +{ + wxEventLoopBaseTiedPtr mainLoop(&m_mainLoop, CreateMainLoop()); + + return m_mainLoop ? m_mainLoop->Run() : -1; +} + +void wxAppConsoleBase::ExitMainLoop() +{ + // we should exit from the main event loop, not just any currently active + // (e.g. modal dialog) event loop + if ( m_mainLoop && m_mainLoop->IsRunning() ) + { + m_mainLoop->Exit(0); + } +} + +bool wxAppConsoleBase::Pending() +{ + // use the currently active message loop here, not m_mainLoop, because if + // we're showing a modal dialog (with its own event loop) currently the + // main event loop is not running anyhow + wxEventLoopBase * const loop = wxEventLoopBase::GetActive(); + + return loop && loop->Pending(); +} + +bool wxAppConsoleBase::Dispatch() +{ + // see comment in Pending() + wxEventLoopBase * const loop = wxEventLoopBase::GetActive(); + + return loop && loop->Dispatch(); +} + +bool wxAppConsoleBase::HasPendingEvents() const +{ + wxENTER_CRIT_SECT( *wxHandlersWithPendingEventsLocker ); + + bool has = wxHandlersWithPendingEvents && !wxHandlersWithPendingEvents->IsEmpty(); + + wxLEAVE_CRIT_SECT( *wxHandlersWithPendingEventsLocker ); + + return has; +} + +/* static */ +bool wxAppConsoleBase::IsMainLoopRunning() +{ + const wxAppConsole * const app = GetInstance(); + + return app && app->m_mainLoop != NULL; +} + +void wxAppConsoleBase::ProcessPendingEvents() { #if wxUSE_THREADS - if ( !wxPendingEventsLocker ) + if ( !wxHandlersWithPendingEventsLocker ) return; #endif - // ensure that we're the only thread to modify the pending events list - wxENTER_CRIT_SECT( *wxPendingEventsLocker ); + wxENTER_CRIT_SECT( *wxHandlersWithPendingEventsLocker ); - if ( !wxPendingEvents ) + if (wxHandlersWithPendingEvents) { - wxLEAVE_CRIT_SECT( *wxPendingEventsLocker ); - return; - } + // iterate until the list becomes empty: the handlers remove themselves + // from it when they don't have any more pending events + wxList::compatibility_iterator node = wxHandlersWithPendingEvents->GetFirst(); + while (node) + { + // In ProcessPendingEvents(), new handlers might be add + // and we can safely leave the critical section here. + wxLEAVE_CRIT_SECT( *wxHandlersWithPendingEventsLocker ); - // iterate until the list becomes empty - wxList::compatibility_iterator node = wxPendingEvents->GetFirst(); - while (node) - { - wxEvtHandler *handler = (wxEvtHandler *)node->GetData(); - wxPendingEvents->Erase(node); + wxEvtHandler *handler = (wxEvtHandler *)node->GetData(); + handler->ProcessPendingEvents(); + + wxENTER_CRIT_SECT( *wxHandlersWithPendingEventsLocker ); + + // restart as the iterators could have been invalidated + node = wxHandlersWithPendingEvents->GetFirst(); + } + } - // In ProcessPendingEvents(), new handlers might be add - // and we can safely leave the critical section here. - wxLEAVE_CRIT_SECT( *wxPendingEventsLocker ); + wxLEAVE_CRIT_SECT( *wxHandlersWithPendingEventsLocker ); +} - handler->ProcessPendingEvents(); +void wxAppConsoleBase::WakeUpIdle() +{ + if ( m_mainLoop ) + m_mainLoop->WakeUp(); +} - wxENTER_CRIT_SECT( *wxPendingEventsLocker ); +bool wxAppConsoleBase::ProcessIdle() +{ + // process pending wx events before sending idle events + ProcessPendingEvents(); - node = wxPendingEvents->GetFirst(); - } + wxIdleEvent event; - wxLEAVE_CRIT_SECT( *wxPendingEventsLocker ); + event.SetEventObject(this); + ProcessEvent(event); + return event.MoreRequested(); } -int wxAppConsole::FilterEvent(wxEvent& WXUNUSED(event)) +int wxAppConsoleBase::FilterEvent(wxEvent& WXUNUSED(event)) { // process the events normally by default return -1; @@ -298,14 +408,70 @@ int wxAppConsole::FilterEvent(wxEvent& WXUNUSED(event)) #if wxUSE_EXCEPTIONS void -wxAppConsole::HandleEvent(wxEvtHandler *handler, - wxEventFunction func, - wxEvent& event) const +wxAppConsoleBase::HandleEvent(wxEvtHandler *handler, + wxEventFunction func, + wxEvent& event) const { // by default, simply call the handler (handler->*func)(event); } +void wxAppConsoleBase::CallEventHandler(wxEvtHandler *handler, + wxEventFunctor& functor, + wxEvent& event) const +{ + // If the functor holds a method then, for backward compatibility, call + // HandleEvent(): + wxEventFunction eventFunction = functor.GetMethod(); + + if ( eventFunction ) + HandleEvent(handler, eventFunction, event); + else + functor(handler, event); +} + +void wxAppConsoleBase::OnUnhandledException() +{ +#ifdef __WXDEBUG__ + // we're called from an exception handler so we can re-throw the exception + // to recover its type + wxString what; + try + { + throw; + } +#if wxUSE_STL + catch ( std::exception& e ) + { + what.Printf("std::exception of type \"%s\", what() = \"%s\"", + typeid(e).name(), e.what()); + } +#endif // wxUSE_STL + catch ( ... ) + { + what = "unknown exception"; + } + + wxMessageOutputBest().Printf( + "*** Caught unhandled %s; terminating\n", what + ); +#endif // __WXDEBUG__ +} + +// ---------------------------------------------------------------------------- +// exceptions support +// ---------------------------------------------------------------------------- + +bool wxAppConsoleBase::OnExceptionInMainLoop() +{ + throw; + + // some compilers are too stupid to know that we never return after throw +#if defined(__DMC__) || (defined(_MSC_VER) && _MSC_VER < 1200) + return false; +#endif +} + #endif // wxUSE_EXCEPTIONS // ---------------------------------------------------------------------------- @@ -314,17 +480,17 @@ wxAppConsole::HandleEvent(wxEvtHandler *handler, #if wxUSE_CMDLINE_PARSER -#define OPTION_VERBOSE _T("verbose") +#define OPTION_VERBOSE "verbose" -void wxAppConsole::OnInitCmdLine(wxCmdLineParser& parser) +void wxAppConsoleBase::OnInitCmdLine(wxCmdLineParser& parser) { // the standard command line options static const wxCmdLineEntryDesc cmdLineDesc[] = { { wxCMD_LINE_SWITCH, - _T("h"), - _T("help"), + "h", + "help", gettext_noop("show this help message"), wxCMD_LINE_VAL_NONE, wxCMD_LINE_OPTION_HELP @@ -333,7 +499,7 @@ void wxAppConsole::OnInitCmdLine(wxCmdLineParser& parser) #if wxUSE_LOG { wxCMD_LINE_SWITCH, - wxEmptyString, + NULL, OPTION_VERBOSE, gettext_noop("generate verbose log messages"), wxCMD_LINE_VAL_NONE, @@ -342,20 +508,13 @@ void wxAppConsole::OnInitCmdLine(wxCmdLineParser& parser) #endif // wxUSE_LOG // terminator - { - wxCMD_LINE_NONE, - wxEmptyString, - wxEmptyString, - wxEmptyString, - wxCMD_LINE_VAL_NONE, - 0x0 - } + wxCMD_LINE_DESC_END }; parser.SetDesc(cmdLineDesc); } -bool wxAppConsole::OnCmdLineParsed(wxCmdLineParser& parser) +bool wxAppConsoleBase::OnCmdLineParsed(wxCmdLineParser& parser) { #if wxUSE_LOG if ( parser.Found(OPTION_VERBOSE) ) @@ -369,14 +528,14 @@ bool wxAppConsole::OnCmdLineParsed(wxCmdLineParser& parser) return true; } -bool wxAppConsole::OnCmdLineHelp(wxCmdLineParser& parser) +bool wxAppConsoleBase::OnCmdLineHelp(wxCmdLineParser& parser) { parser.Usage(); return false; } -bool wxAppConsole::OnCmdLineError(wxCmdLineParser& parser) +bool wxAppConsoleBase::OnCmdLineError(wxCmdLineParser& parser) { parser.Usage(); @@ -390,8 +549,8 @@ bool wxAppConsole::OnCmdLineError(wxCmdLineParser& parser) // ---------------------------------------------------------------------------- /* static */ -bool wxAppConsole::CheckBuildOptions(const char *optionsSignature, - const char *componentName) +bool wxAppConsoleBase::CheckBuildOptions(const char *optionsSignature, + const char *componentName) { #if 0 // can't use wxLogTrace, not up and running yet printf("checking build options object '%s' (ptr %p) in '%s'\n", @@ -420,19 +579,19 @@ bool wxAppConsole::CheckBuildOptions(const char *optionsSignature, #ifdef __WXDEBUG__ -void wxAppConsole::OnAssertFailure(const wxChar *file, - int line, - const wxChar *func, - const wxChar *cond, - const wxChar *msg) +void wxAppConsoleBase::OnAssertFailure(const wxChar *file, + int line, + const wxChar *func, + const wxChar *cond, + const wxChar *msg) { ShowAssertDialog(file, line, func, cond, msg, GetTraits()); } -void wxAppConsole::OnAssert(const wxChar *file, - int line, - const wxChar *cond, - const wxChar *msg) +void wxAppConsoleBase::OnAssert(const wxChar *file, + int line, + const wxChar *cond, + const wxChar *msg) { OnAssertFailure(file, line, NULL, cond, msg); } @@ -499,13 +658,6 @@ void wxConsoleAppTraitsBase::RemoveFromPendingDelete(wxObject * WXUNUSED(object) // nothing to do } -#if wxUSE_SOCKETS -GSocketGUIFunctionsTable* wxConsoleAppTraitsBase::GetSocketGUIFunctionsTable() -{ - return NULL; -} -#endif - // ---------------------------------------------------------------------------- // wxAppTraits // ---------------------------------------------------------------------------- @@ -513,11 +665,40 @@ GSocketGUIFunctionsTable* wxConsoleAppTraitsBase::GetSocketGUIFunctionsTable() #if wxUSE_INTL void wxAppTraitsBase::SetLocale() { - setlocale(LC_ALL, ""); + wxSetlocale(LC_ALL, ""); wxUpdateLocaleIsUtf8(); } #endif +#if wxUSE_THREADS +void wxMutexGuiEnterImpl(); +void wxMutexGuiLeaveImpl(); + +void wxAppTraitsBase::MutexGuiEnter() +{ + wxMutexGuiEnterImpl(); +} + +void wxAppTraitsBase::MutexGuiLeave() +{ + wxMutexGuiLeaveImpl(); +} + +void WXDLLIMPEXP_BASE wxMutexGuiEnter() +{ + wxAppTraits * const traits = wxAppConsoleBase::GetTraitsIfExists(); + if ( traits ) + traits->MutexGuiEnter(); +} + +void WXDLLIMPEXP_BASE wxMutexGuiLeave() +{ + wxAppTraits * const traits = wxAppConsoleBase::GetTraitsIfExists(); + if ( traits ) + traits->MutexGuiLeave(); +} +#endif // wxUSE_THREADS + #ifdef __WXDEBUG__ bool wxAppTraitsBase::ShowAssertDialog(const wxString& msgOriginal) @@ -645,12 +826,6 @@ void wxTrap() { #if defined(__WXMSW__) && !defined(__WXMICROWIN__) DebugBreak(); -#elif defined(__WXMAC__) && !defined(__DARWIN__) - #if __powerc - Debugger(); - #else - SysBreak(); - #endif #elif defined(_MSL_USING_MW_C_HEADERS) && _MSL_USING_MW_C_HEADERS Debugger(); #elif defined(__UNIX__) @@ -661,45 +836,111 @@ void wxTrap() } // this function is called when an assert fails -void wxOnAssert(const wxChar *szFile, - int nLine, - const char *szFunc, - const wxChar *szCond, - const wxChar *szMsg) +static void wxDoOnAssert(const wxString& szFile, + int nLine, + const wxString& szFunc, + const wxString& szCond, + const wxString& szMsg = wxEmptyString) { // FIXME MT-unsafe - static bool s_bInAssert = false; + static int s_bInAssert = 0; - if ( s_bInAssert ) + wxRecursionGuard guard(s_bInAssert); + if ( guard.IsInside() ) { - // He-e-e-e-elp!! we're trapped in endless loop + // can't use assert here to avoid infinite loops, so just trap wxTrap(); - s_bInAssert = false; - return; } - s_bInAssert = true; - - // __FUNCTION__ is always in ASCII, convert it to wide char if needed - const wxString strFunc = wxString::FromAscii(szFunc); - if ( !wxTheApp ) { // by default, show the assert dialog box -- we can't customize this // behaviour - ShowAssertDialog(szFile, nLine, strFunc, szCond, szMsg); + ShowAssertDialog(szFile, nLine, szFunc, szCond, szMsg); } else { // let the app process it as it wants - wxTheApp->OnAssertFailure(szFile, nLine, strFunc, szCond, szMsg); + // FIXME-UTF8: use wc_str(), not c_str(), when ANSI build is removed + wxTheApp->OnAssertFailure(szFile.c_str(), nLine, szFunc.c_str(), + szCond.c_str(), szMsg.c_str()); } +} + +void wxOnAssert(const wxString& szFile, + int nLine, + const wxString& szFunc, + const wxString& szCond, + const wxString& szMsg) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond, szMsg); +} + +void wxOnAssert(const wxString& szFile, + int nLine, + const wxString& szFunc, + const wxString& szCond) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond); +} + +void wxOnAssert(const wxChar *szFile, + int nLine, + const char *szFunc, + const wxChar *szCond, + const wxChar *szMsg) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond, szMsg); +} - s_bInAssert = false; +void wxOnAssert(const char *szFile, + int nLine, + const char *szFunc, + const char *szCond, + const wxString& szMsg) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond, szMsg); } +void wxOnAssert(const char *szFile, + int nLine, + const char *szFunc, + const char *szCond, + const wxCStrData& msg) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond, msg); +} + +#if wxUSE_UNICODE +void wxOnAssert(const char *szFile, + int nLine, + const char *szFunc, + const char *szCond) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond); +} + +void wxOnAssert(const char *szFile, + int nLine, + const char *szFunc, + const char *szCond, + const char *szMsg) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond, szMsg); +} + +void wxOnAssert(const char *szFile, + int nLine, + const char *szFunc, + const char *szCond, + const wxChar *szMsg) +{ + wxDoOnAssert(szFile, nLine, szFunc, szCond, szMsg); +} +#endif // wxUSE_UNICODE + #endif // __WXDEBUG__ // ============================================================================ @@ -721,6 +962,7 @@ static void LINKAGEMODE SetTraceMasks() #endif // wxUSE_LOG } +static bool DoShowAssertDialog(const wxString& msg) { // under MSW we can show the dialog even in the console mode @@ -733,7 +975,7 @@ bool DoShowAssertDialog(const wxString& msg) wxT("You can also choose [Cancel] to suppress ") wxT("further warnings."); - switch ( ::MessageBox(NULL, msgDlg, _T("wxWidgets Debug Alert"), + switch ( ::MessageBox(NULL, msgDlg.wx_str(), _T("wxWidgets Debug Alert"), MB_YESNOCANCEL | MB_ICONSTOP ) ) { case IDYES: @@ -760,11 +1002,11 @@ bool DoShowAssertDialog(const wxString& msg) // show the assert modal dialog static -void ShowAssertDialog(const wxChar *szFile, +void ShowAssertDialog(const wxString& szFile, int nLine, - const wxChar *szFunc, - const wxChar *szCond, - const wxChar *szMsg, + const wxString& szFunc, + const wxString& szCond, + const wxString& szMsg, wxAppTraits *traits) { // this variable can be set to true to suppress "assert failure" messages @@ -779,11 +1021,11 @@ void ShowAssertDialog(const wxChar *szFile, msg.Printf(wxT("%s(%d): assert \"%s\" failed"), szFile, nLine, szCond); // add the function name, if any - if ( szFunc && *szFunc ) + if ( !szFunc.empty() ) msg << _T(" in ") << szFunc << _T("()"); // and the message itself - if ( szMsg ) + if ( !szMsg.empty() ) { msg << _T(": ") << szMsg; } @@ -801,7 +1043,7 @@ void ShowAssertDialog(const wxChar *szFile, #if defined(__WXMSW__) && !defined(__WXMICROWIN__) msg << wxT("\r\n"); - OutputDebugString(msg ); + OutputDebugString(msg.wx_str()); #else // send to stderr wxFprintf(stderr, wxT("%s\n"), msg.c_str());