/////////////////////////////////////////////////////////////////////////////
-// Name: common/init.cpp
+// Name: src/common/init.cpp
// Purpose: initialisation for the library
// Author: Vadim Zeitlin
// Modified by:
#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/ptr_scpd.h"
-#include "wx/module.h"
+#include "wx/init.h"
+#include "wx/thread.h"
-#if defined(__WXMSW__) && defined(__WXDEBUG__)
+#include "wx/scopedptr.h"
+#include "wx/except.h"
+
+#if defined(__WXMSW__)
+ #include "wx/msw/private.h"
#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
class wxDummyConsoleApp : public wxAppConsole
{
public:
- virtual int OnRun() { wxFAIL_MSG( _T("unreachable code") ); return 0; }
+ wxDummyConsoleApp() { }
+
+ virtual int OnRun() { wxFAIL_MSG( wxT("unreachable code") ); return 0; }
+ virtual bool DoYield(bool, long) { return true; }
+
+ 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 wxTheApp
-wxDECLARE_SCOPED_PTR(wxApp, wxAppPtrBase);
-wxDEFINE_SCOPED_PTR(wxApp, wxAppPtrBase);
+// pointer it holds in its dtor but also resets the global application pointer
+wxDECLARE_SCOPED_PTR(wxAppConsole, wxAppPtrBase)
+wxDEFINE_SCOPED_PTR(wxAppConsole, wxAppPtrBase)
class wxAppPtr : public wxAppPtrBase
{
public:
- wxEXPLICIT wxAppPtr(wxApp *ptr = NULL) : wxAppPtrBase(ptr) { }
+ wxEXPLICIT wxAppPtr(wxAppConsole *ptr = NULL) : wxAppPtrBase(ptr) { }
~wxAppPtr()
{
if ( get() )
{
// the pointer is going to be deleted in the base class dtor, don't
// leave the dangling pointer!
- wxTheApp = NULL;
+ wxApp::SetInstance(NULL);
}
}
- void Set(wxApp *ptr)
+ void Set(wxAppConsole *ptr)
{
reset(ptr);
- wxTheApp = ptr;
+ wxApp::SetInstance(ptr);
}
+
+ wxDECLARE_NO_COPY_CLASS(wxAppPtr);
};
-// another tiny class which simply exists to ensure that wxEntryCleanup is
-// always called
-class wxCleanupOnExit
+// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
+// fails
+class wxCallAppCleanup
{
public:
- ~wxCleanupOnExit() { wxEntryCleanup(); }
+ wxCallAppCleanup(wxAppConsole *app) : m_app(app) { }
+ ~wxCallAppCleanup() { if ( m_app ) m_app->CleanUp(); }
+
+ void Dismiss() { m_app = NULL; }
+
+private:
+ wxAppConsole *m_app;
};
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+// suppress warnings about unused variables
+static inline void Use(void *) { }
+
+#define WX_SUPPRESS_UNUSED_WARN(x) Use(&x)
+
// ----------------------------------------------------------------------------
// initialization data
// ----------------------------------------------------------------------------
// them to Unicode ourselves (this is the case under Unix but not Windows,
// for example), we remember the converted argv here because we'll have to
// free it when doing cleanup to avoid memory leaks
- wchar_t *argv;
+ wchar_t **argv;
#endif // wxUSE_UNICODE
+
+ wxDECLARE_NO_COPY_CLASS(InitData);
} gs_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.argv[argc] = NULL;
+ gs_initData.argc = wargc;
+ gs_initData.argv[wargc] = NULL;
}
static void FreeConvertedArgs()
{
- for ( int mb_argc = 0; mb_argc < wxTheApp->argc; mb_argc++ )
+ if ( gs_initData.argv )
{
- free(wxTheApp->argv[mb_argc]);
+ for ( int i = 0; i < gs_initData.argc; i++ )
+ {
+ free(gs_initData.argv[i]);
+ }
+
+ wxDELETEA(gs_initData.argv);
+ gs_initData.argc = 0;
}
}
// initialization which is always done (not customizable) before wxApp creation
static bool DoCommonPreInit()
{
- wxClassInfo::InitializeClasses();
+#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
+
+#ifdef __WXMSW__
+ // GUI applications obtain HINSTANCE in their WinMain() but we also need to
+ // initialize the global wxhInstance variable for the console programs as
+ // they may need it too, so set it here if it wasn't done yet
+ if ( !wxGetInstance() )
+ {
+ wxSetInstance(::GetModuleHandle(NULL));
+ }
+#endif // __WXMSW__
return true;
}
{
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)
+bool wxEntryStart(int& argc, wxChar **argv)
{
// do minimal, always necessary, initialization
// --------------------------------------------
// initialize wxRTTI
if ( !DoCommonPreInit() )
- {
return false;
- }
// first of all, we need an application object
{
// either IMPLEMENT_APP() was not used at all or it failed -- in any
// case we still need something
- //
- // NB: cast is needed because for the backwards-compatibility reasons
- // wxTheApp is really a wxApp and not just wxAppConsole...
- app.Set((wxApp *)new wxDummyConsoleApp);
+ app.Set(new wxDummyConsoleApp);
}
// wxApp initialization: this can be customized
// --------------------------------------------
- if ( !wxTheApp->Initialize(argc, argv) )
- {
+ if ( !app->Initialize(argc, argv) )
return false;
- }
+
+ // remember, possibly modified (e.g. due to removal of toolkit-specific
+ // parameters), command line arguments in member variables
+ app->argc = argc;
+ app->argv = argv;
+
+ wxCallAppCleanup callAppCleanup(app.get());
// common initialization after wxTheApp creation
// ---------------------------------------------
if ( !DoCommonPostInit() )
- {
return false;
- }
// prevent the smart pointer from destroying its contents
app.release();
+ // 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;
}
#if wxUSE_UNICODE
// we provide a wxEntryStart() wrapper taking "char *" pointer too
-bool wxEntryStart(int argc, char **argv)
+bool wxEntryStart(int& argc, char **argv)
{
ConvertArgsToUnicode(argc, argv);
- if ( !wxEntryStart(argc, gs_initData.argv) )
+ if ( !wxEntryStart(gs_initData.argc, gs_initData.argv) )
{
FreeConvertedArgs();
// clean up
// ----------------------------------------------------------------------------
-// cleanup done before destroying wxTheApp
+// cleanup done before destroying wxTheApp
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
- // wxWindows 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
-
- wxModule::CleanUpModules();
}
// cleanup done after destroying wxTheApp
static void DoCommonPostCleanup()
{
- wxClassInfo::CleanUpClasses();
+ wxModule::CleanUpModules();
// we can't do this in wxApp itself because it doesn't know if argv had
// been allocated
FreeConvertedArgs();
#endif // wxUSE_UNICODE
+ // 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
}
{
wxTheApp->CleanUp();
- delete wxTheApp;
- wxTheApp = NULL;
+ // 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;
}
DoCommonPostCleanup();
-
- // check for memory leaks
-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
- if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
- {
- wxLogDebug(wxT("There were memory leaks.\n"));
- wxDebugContext::Dump();
- wxDebugContext::PrintStatistics();
- }
-#endif // Debug
-
}
// ----------------------------------------------------------------------------
// wxEntry
// ----------------------------------------------------------------------------
-#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)
+int wxEntryReal(int& argc, wxChar **argv)
{
// library initialization
- if ( !wxEntryStart(argc, argv) )
- {
- return -1;
- }
-
- // if wxEntryStart succeeded, we must call wxEntryCleanup even if the code
- // below returns or throws
- wxCleanupOnExit cleanupOnExit;
+ wxInitializer initializer(argc, argv);
- // app initialization
- if ( !wxTheApp->OnInit() )
+ if ( !initializer.IsOk() )
{
- // don't call OnExit() if OnInit() failed
+#if wxUSE_LOG
+ // flush any log messages explaining why we failed
+ delete wxLog::SetActiveTarget(NULL);
+#endif
return -1;
}
- // app execution
- int retValue = wxTheApp->OnRun();
-
- // why should we do this? it doesn't close all window, just one of them and
- // this shouldn't be necessary anyhow...
-#if 0
- // close any remaining windows
- wxWindow *topWindow = wxTheApp->GetTopWindow();
- if ( topWindow )
+ wxTRY
{
- // forcibly delete the window.
- topWindow->Destroy();
-
- // collect the dead objects
- wxTheApp->DeletePendingObjects();
- }
-#endif // 0
-
- // app clean up
- wxTheApp->OnExit();
-
- return retValue;
-}
+ // app initialization
+ if ( !wxTheApp->CallOnInit() )
+ {
+ // don't call OnExit() if OnInit() failed
+ return -1;
+ }
-// wrap real wxEntry in a try-except block to be able to call
-// OnFatalException() if necessary
-#if defined(__WXMSW__) && wxUSE_ON_FATAL_EXCEPTION
+ // ensure that OnExit() is called if OnInit() had succeeded
+ class CallOnExit
+ {
+ public:
+ ~CallOnExit() { wxTheApp->OnExit(); }
+ } callOnExit;
-extern unsigned long wxGlobalSEHandler();
+ WX_SUPPRESS_UNUSED_WARN(callOnExit);
-int wxEntry(int argc, wxChar **argv)
-{
- __try
- {
- return wxEntryReal(argc, argv);
- }
- __except ( wxGlobalSEHandler() )
- {
- ::ExitProcess(3); // the same exit code as abort()
-
- // this code is unreachable but put it here to suppress warnings
- return -1;
+ // app execution
+ return wxTheApp->OnRun();
}
+ wxCATCH_ALL( wxTheApp->OnUnhandledException(); return -1; )
}
-#endif // __WXMSW__ && wxUSE_ON_FATAL_EXCEPTION
-
#if wxUSE_UNICODE
// as with wxEntryStart, we provide an ANSI wrapper
-int wxEntry(int argc, char **argv)
+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
// wxInitialize/wxUninitialize
// ----------------------------------------------------------------------------
+bool wxInitialize()
+{
+ return wxInitialize(0, (wxChar**)NULL);
+}
+
bool wxInitialize(int argc, wxChar **argv)
{
wxCRIT_SECT_LOCKER(lockInit, gs_initData.csInit);
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();
}
}
-
projects / wxWidgets.git / blobdiff