X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8c125d136d0e87702fe8964ff3eeb586b26ec821..62354609e69487e1066e1b1129c254c886cfa0fb:/src/common/init.cpp diff --git a/src/common/init.cpp b/src/common/init.cpp index 8e4cba57e0..aca0a83306 100644 --- a/src/common/init.cpp +++ b/src/common/init.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: common/init.cpp +// Name: src/common/init.cpp // Purpose: initialisation for the library // Author: Vadim Zeitlin // Modified by: @@ -20,37 +20,39 @@ #include "wx/wxprec.h" #ifdef __BORLANDC__ - #pragma hdrstop + #pragma hdrstop #endif //__BORLANDC__ #ifndef WX_PRECOMP #include "wx/app.h" - #include "wx/debug.h" #include "wx/filefn.h" #include "wx/log.h" - #include "wx/thread.h" + #include "wx/intl.h" + #include "wx/module.h" #endif #include "wx/init.h" +#include "wx/thread.h" -#include "wx/ptr_scpd.h" -#include "wx/module.h" +#include "wx/scopedptr.h" #include "wx/except.h" -#if defined(__WXMSW__) && defined(__WXDEBUG__) +#if defined(__WXMSW__) #include "wx/msw/msvcrt.h" - static struct EnableMemLeakChecking - { - EnableMemLeakChecking() + #ifdef wxCrtSetDbgFlag + static struct EnableMemLeakChecking { - // do check for memory leaks on program exit (another useful flag - // is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free deallocated - // memory which may be used to simulate low-memory condition) - wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); - } - } gs_enableLeakChecks; -#endif // __WXMSW__ && __WXDEBUG__ + EnableMemLeakChecking() + { + // check for memory leaks on program exit (another useful flag + // is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free deallocated + // memory which may be used to simulate low-memory condition) + wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); + } + } gs_enableLeakChecks; + #endif // wxCrtSetDbgFlag +#endif // __WXMSW__ // ---------------------------------------------------------------------------- // private classes @@ -62,15 +64,16 @@ class wxDummyConsoleApp : public wxAppConsole public: wxDummyConsoleApp() { } - virtual int OnRun() { wxFAIL_MSG( _T("unreachable code") ); return 0; } + virtual int OnRun() { wxFAIL_MSG( wxT("unreachable code") ); return 0; } + virtual bool DoYield(bool, long) { return true; } - DECLARE_NO_COPY_CLASS(wxDummyConsoleApp) + wxDECLARE_NO_COPY_CLASS(wxDummyConsoleApp); }; // we need a special kind of auto pointer to wxApp which not only deletes the // pointer it holds in its dtor but also resets the global application pointer -wxDECLARE_SCOPED_PTR(wxAppConsole, wxAppPtrBase); -wxDEFINE_SCOPED_PTR(wxAppConsole, wxAppPtrBase); +wxDECLARE_SCOPED_PTR(wxAppConsole, wxAppPtrBase) +wxDEFINE_SCOPED_PTR(wxAppConsole, wxAppPtrBase) class wxAppPtr : public wxAppPtrBase { @@ -93,7 +96,7 @@ public: wxApp::SetInstance(ptr); } - DECLARE_NO_COPY_CLASS(wxAppPtr) + wxDECLARE_NO_COPY_CLASS(wxAppPtr); }; // class to ensure that wxAppBase::CleanUp() is called if our Initialize() @@ -110,14 +113,6 @@ private: wxAppConsole *m_app; }; -// another tiny class which simply exists to ensure that wxEntryCleanup is -// always called -class wxCleanupOnExit -{ -public: - ~wxCleanupOnExit() { wxEntryCleanup(); } -}; - // ---------------------------------------------------------------------------- // private functions // ---------------------------------------------------------------------------- @@ -160,7 +155,7 @@ static struct InitData wchar_t **argv; #endif // wxUSE_UNICODE - DECLARE_NO_COPY_CLASS(InitData) + wxDECLARE_NO_COPY_CLASS(InitData); } gs_initData; // ============================================================================ @@ -176,13 +171,27 @@ static struct InitData static void ConvertArgsToUnicode(int argc, char **argv) { gs_initData.argv = new wchar_t *[argc + 1]; + int wargc = 0; for ( int i = 0; i < argc; i++ ) { - gs_initData.argv[i] = wxStrdup(wxConvLocal.cMB2WX(argv[i])); +#ifdef __DARWIN__ + wxWCharBuffer buf(wxConvFileName->cMB2WX(argv[i])); +#else + wxWCharBuffer buf(wxConvLocal.cMB2WX(argv[i])); +#endif + if ( !buf ) + { + wxLogWarning(_("Command line argument %d couldn't be converted to Unicode and will be ignored."), + i); + } + else // converted ok + { + gs_initData.argv[wargc++] = wxStrdup(buf); + } } - gs_initData.argc = argc; - gs_initData.argv[argc] = NULL; + gs_initData.argc = wargc; + gs_initData.argv[wargc] = NULL; } static void FreeConvertedArgs() @@ -209,6 +218,26 @@ static void FreeConvertedArgs() // initialization which is always done (not customizable) before wxApp creation static bool DoCommonPreInit() { +#if wxUSE_LOG + // Reset logging in case we were cleaned up and are being reinitialized. + wxLog::DoCreateOnDemand(); + + // force wxLog to create a log target now: we do it because wxTheApp + // doesn't exist yet so wxLog will create a special log target which is + // safe to use even when the GUI is not available while without this call + // we could create wxApp in wxEntryStart() below, then log an error about + // e.g. failure to establish connection to the X server and wxLog would + // send it to wxLogGui (because wxTheApp does exist already) which, of + // course, can't be used in this case + // + // notice also that this does nothing if the user had set up a custom log + // target before -- which is fine as we want to give him this possibility + // (as it's impossible to override logging by overriding wxAppTraits:: + // CreateLogTarget() before wxApp is created) and we just assume he knows + // what he is doing + wxLog::GetActiveTarget(); +#endif // wxUSE_LOG + return true; } @@ -217,7 +246,13 @@ static bool DoCommonPostInit() { wxModule::RegisterModules(); - return wxModule::InitializeModules(); + if ( !wxModule::InitializeModules() ) + { + wxLogError(_("Initialization failed in post init, aborting.")); + return false; + } + + return true; } bool wxEntryStart(int& argc, wxChar **argv) @@ -227,9 +262,7 @@ bool wxEntryStart(int& argc, wxChar **argv) // initialize wxRTTI if ( !DoCommonPreInit() ) - { return false; - } // first of all, we need an application object @@ -262,15 +295,14 @@ bool wxEntryStart(int& argc, wxChar **argv) // -------------------------------------------- if ( !app->Initialize(argc, argv) ) - { return false; - } - wxCallAppCleanup callAppCleanup(app.get()); + // remember, possibly modified (e.g. due to removal of toolkit-specific + // parameters), command line arguments in member variables + app->argc = argc; + app->argv = argv; - // for compatibility call the old initialization function too - if ( !app->OnInitGui() ) - return false; + wxCallAppCleanup callAppCleanup(app.get()); // common initialization after wxTheApp creation @@ -286,6 +318,14 @@ bool wxEntryStart(int& argc, wxChar **argv) // and the cleanup object from doing cleanup callAppCleanup.Dismiss(); +#if wxUSE_LOG + // now that we have a valid wxApp (wxLogGui would have crashed if we used + // it before now), we can delete the temporary sink we had created for the + // initialization messages -- the next time logging function is called, the + // sink will be recreated but this time wxAppTraits will be used + delete wxLog::SetActiveTarget(NULL); +#endif // wxUSE_LOG + return true; } @@ -296,7 +336,7 @@ bool wxEntryStart(int& argc, char **argv) { ConvertArgsToUnicode(argc, argv); - if ( !wxEntryStart(argc, gs_initData.argv) ) + if ( !wxEntryStart(gs_initData.argc, gs_initData.argv) ) { FreeConvertedArgs(); @@ -316,14 +356,15 @@ bool wxEntryStart(int& argc, char **argv) static void DoCommonPreCleanup() { #if wxUSE_LOG - // flush the logged messages if any and install a 'safer' log target: the - // default one (wxLogGui) can't be used after the resources are freed just - // below and the user supplied one might be even more unsafe (using any - // wxWidgets GUI function is unsafe starting from now) - wxLog::DontCreateOnDemand(); - - // this will flush the old messages if any - delete wxLog::SetActiveTarget(new wxLogStderr); + // flush the logged messages if any and don't use the current probably + // unsafe log target any more: the default one (wxLogGui) can't be used + // after the resources are freed which happens when we return and the user + // supplied one might be even more unsafe (using any wxWidgets GUI function + // is unsafe starting from now) + // + // notice that wxLog will still recreate a default log target if any + // messages are logged but that one will be safe to use until the very end + delete wxLog::SetActiveTarget(NULL); #endif // wxUSE_LOG } @@ -332,17 +373,24 @@ static void DoCommonPostCleanup() { wxModule::CleanUpModules(); - wxClassInfo::CleanUp(); - // we can't do this in wxApp itself because it doesn't know if argv had // been allocated #if wxUSE_UNICODE FreeConvertedArgs(); #endif // wxUSE_UNICODE - // Note: check for memory leaks is now done via wxDebugContextDumpDelayCounter + // use Set(NULL) and not Get() to avoid creating a message output object on + // demand when we just want to delete it + delete wxMessageOutput::Set(NULL); + #if wxUSE_LOG // and now delete the last logger as well + // + // we still don't disable log target auto-vivification even if any log + // objects created now will result in memory leaks because it seems better + // to leak memory which doesn't matter much considering the application is + // exiting anyhow than to not show messages which could still be logged + // from the user code (e.g. static dtors and such) delete wxLog::SetActiveTarget(NULL); #endif // wxUSE_LOG } @@ -357,8 +405,12 @@ void wxEntryCleanup() { wxTheApp->CleanUp(); - delete wxTheApp; + // reset the global pointer to it to NULL before destroying it as in + // some circumstances this can result in executing the code using + // wxTheApp and using half-destroyed object is no good + wxAppConsole * const app = wxApp::GetInstance(); wxApp::SetInstance(NULL); + delete app; } @@ -369,28 +421,27 @@ void wxEntryCleanup() // wxEntry // ---------------------------------------------------------------------------- -// for MSW with wxUSE_ON_FATAL_EXCEPTION on, wxEntry is defined in msw/main.cpp -#if !defined(__WXMSW__) || !wxUSE_ON_FATAL_EXCEPTION +// for MSW the real wxEntry is defined in msw/main.cpp +#ifndef __WXMSW__ #define wxEntryReal wxEntry -#endif // !(__WXMSW__ && wxUSE_ON_FATAL_EXCEPTION) +#endif // !__WXMSW__ int wxEntryReal(int& argc, wxChar **argv) { // library initialization - if ( !wxEntryStart(argc, argv) ) + wxInitializer initializer(argc, argv); + + if ( !initializer.IsOk() ) { +#if wxUSE_LOG + // flush any log messages explaining why we failed + delete wxLog::SetActiveTarget(NULL); +#endif return -1; } - // if wxEntryStart succeeded, we must call wxEntryCleanup even if the code - // below returns or throws - wxCleanupOnExit cleanupOnExit; - - WX_SUPPRESS_UNUSED_WARN(cleanupOnExit); - wxTRY { - // app initialization if ( !wxTheApp->CallOnInit() ) { @@ -420,7 +471,7 @@ int wxEntry(int& argc, char **argv) { ConvertArgsToUnicode(argc, argv); - return wxEntry(argc, gs_initData.argv); + return wxEntry(gs_initData.argc, gs_initData.argv); } #endif // wxUSE_UNICODE @@ -429,6 +480,11 @@ int wxEntry(int& argc, char **argv) // wxInitialize/wxUninitialize // ---------------------------------------------------------------------------- +bool wxInitialize() +{ + return wxInitialize(0, (wxChar**)NULL); +} + bool wxInitialize(int argc, wxChar **argv) { wxCRIT_SECT_LOCKER(lockInit, gs_initData.csInit); @@ -442,13 +498,27 @@ bool wxInitialize(int argc, wxChar **argv) return wxEntryStart(argc, argv); } +#if wxUSE_UNICODE +bool wxInitialize(int argc, char **argv) +{ + wxCRIT_SECT_LOCKER(lockInit, gs_initData.csInit); + + if ( gs_initData.nInitCount++ ) + { + // already initialized + return true; + } + + return wxEntryStart(argc, argv); +} +#endif // wxUSE_UNICODE + void wxUninitialize() { wxCRIT_SECT_LOCKER(lockInit, gs_initData.csInit); - if ( !--gs_initData.nInitCount ) + if ( --gs_initData.nInitCount == 0 ) { wxEntryCleanup(); } } -