From 8c125d136d0e87702fe8964ff3eeb586b26ec821 Mon Sep 17 00:00:00 2001 From: Vadim Zeitlin Date: Mon, 17 Jan 2005 01:54:25 +0000 Subject: [PATCH] moved fatal exception handling code to msw/main.cpp from common code git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31420 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- src/common/init.cpp | 38 +----------- src/msw/main.cpp | 141 +++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 140 insertions(+), 39 deletions(-) diff --git a/src/common/init.cpp b/src/common/init.cpp index 67112ab050..8e4cba57e0 100644 --- a/src/common/init.cpp +++ b/src/common/init.cpp @@ -369,6 +369,7 @@ 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 #define wxEntryReal wxEntry #endif // !(__WXMSW__ && wxUSE_ON_FATAL_EXCEPTION) @@ -412,43 +413,6 @@ int wxEntryReal(int& argc, wxChar **argv) wxCATCH_ALL( wxTheApp->OnUnhandledException(); 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 - -#ifdef __WXWINCE__ -// For ExitThread -#include "wx/msw/private.h" -#endif - -extern unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs); - -int wxEntry(int& argc, wxChar **argv) -{ - __try - { - return wxEntryReal(argc, argv); - } - __except ( wxGlobalSEHandler(GetExceptionInformation()) ) - { -#ifdef __WXWINCE__ - ::ExitThread(3); // the same exit code as abort() -#elif __WXPALMOS__ - return -1; -#else - ::ExitProcess(3); // the same exit code as abort() -#endif - -#if !defined(_MSC_VER) || _MSC_VER < 1300 - // this code is unreachable but put it here to suppress warnings - // from some compilers - return -1; -#endif - } -} - -#endif // __WXMSW__ && wxUSE_ON_FATAL_EXCEPTION - #if wxUSE_UNICODE // as with wxEntryStart, we provide an ANSI wrapper diff --git a/src/msw/main.cpp b/src/msw/main.cpp index 5251f1f34d..aaa5d051ae 100644 --- a/src/msw/main.cpp +++ b/src/msw/main.cpp @@ -34,6 +34,21 @@ #include "wx/msw/private.h" +#if wxUSE_ON_FATAL_EXCEPTION + #include "wx/datetime.h" + #include "wx/msw/crashrpt.h" + + #ifdef __VISUALC__ + #include + #endif // __VISUALC__ +#endif // wxUSE_ON_FATAL_EXCEPTION + +#ifdef __WXWINCE__ + // there is no ExitProcess() under CE but exiting the main thread has the + // same effect + #define ExitProcess ExitThread +#endif + #ifdef __BORLANDC__ // BC++ has to be special: its run-time expects the DLL entry point to be // named DllEntryPoint instead of the (more) standard DllMain @@ -44,12 +59,134 @@ #define HINSTANCE HANDLE #endif -#if wxUSE_GUI - // ============================================================================ // implementation: various entry points // ============================================================================ +// ---------------------------------------------------------------------------- +// wrapper wxEntry catching all Win32 exceptions occuring in a wx program +// ---------------------------------------------------------------------------- + +// wrap real wxEntry in a try-except block to be able to call +// OnFatalException() if necessary +#if wxUSE_ON_FATAL_EXCEPTION + +// global pointer to exception information, only valid inside OnFatalException, +// used by wxStackWalker and wxCrashReport +extern EXCEPTION_POINTERS *wxGlobalSEInformation = NULL; + +// flag telling us whether the application wants to handle exceptions at all +static bool gs_handleExceptions = false; + +unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs) +{ + if ( gs_handleExceptions && wxTheApp ) + { + // store the pointer to exception info + wxGlobalSEInformation = pExcPtrs; + + // give the user a chance to do something special about this + __try + { + wxTheApp->OnFatalException(); + } + __except ( EXCEPTION_EXECUTE_HANDLER ) + { + // nothing to do here, just ignore the exception inside the + // exception handler + ; + } + + wxGlobalSEInformation = NULL; + + // this will execute our handler and terminate the process + return EXCEPTION_EXECUTE_HANDLER; + } + + return EXCEPTION_CONTINUE_SEARCH; +} + +#ifdef __VISUALC__ + +static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep) +{ + wxGlobalSEHandler(ep); +} + +#endif // __VISUALC__ + +bool wxHandleFatalExceptions(bool doit) +{ + // assume this can only be called from the main thread + gs_handleExceptions = doit; + +#ifdef __VISUALC__ + // VC++ (at least from 4.0 up to version 7.1) is incredibly broken in that + // a "catch ( ... )" will *always* catch SEH exceptions in it even though + // it should have never been the case... to prevent such catches from + // stealing the exceptions from our wxGlobalSEHandler which is only called + // if the exception is not handled elsewhere, we have to also call it from + // a special SEH translator function which is called by VC CRT when a Win32 + // exception occurs + _set_se_translator(doit ? wxSETranslator : NULL); +#endif + +#if wxUSE_CRASHREPORT + if ( doit ) + { + // try to find a place where we can put out report file later + wxChar fullname[MAX_PATH]; + if ( !::GetTempPath(WXSIZEOF(fullname), fullname) ) + { + wxLogLastError(_T("GetTempPath")); + + // when all else fails... + wxStrcpy(fullname, _T("c:\\")); + } + + // use PID and date to make the report file name more unique + wxString name = wxString::Format + ( + _T("%s_%s_%lu.dmp"), + wxTheApp ? wxTheApp->GetAppName().c_str() + : _T("wxwindows"), + wxDateTime::Now().Format(_T("%Y%m%dT%H%M%S")).c_str(), + ::GetCurrentProcessId() + ); + + wxStrncat(fullname, name, WXSIZEOF(fullname) - wxStrlen(fullname) - 1); + + wxCrashReport::SetFileName(fullname); + } +#endif // wxUSE_CRASHREPORT + + return true; +} + +int wxEntry(int& argc, wxChar **argv) +{ + __try + { + extern int wxEntryReal(int& argc, wxChar **argv); + + return wxEntryReal(argc, argv); + } + __except ( wxGlobalSEHandler(GetExceptionInformation()) ) + { + ::ExitProcess(3); // the same exit code as abort() + +#if !defined(_MSC_VER) || _MSC_VER < 1300 + // this code is unreachable but put it here to suppress warnings + // from some compilers + return -1; +#endif + } +} + +#endif // wxUSE_ON_FATAL_EXCEPTION + +#if wxUSE_GUI + // ---------------------------------------------------------------------------- // Windows-specific wxEntry // ---------------------------------------------------------------------------- -- 2.45.2