handle fatal exceptions in the other threads (based on patch 1459813 by Carl-Friedrich Braun)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38929 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

build/bakefiles/files.bkl

@@ -119,6 +119,7 @@ IMPORTANT: please read docs/tech/tn0016.txt before modifying this file!
     wx/msw/private.h
     wx/msw/regconf.h
     wx/msw/registry.h
+    wx/msw/seh.h
     wx/msw/stackwalk.h
     wx/msw/stdpaths.h
     wx/msw/winundef.h

include/wx/msw/seh.h

@@ -0,0 +1,74 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/msw/seh.h
+// Purpose:     declarations for SEH (structured exceptions handling) support
+// Author:      Vadim Zeitlin
+// Created:     2006-04-26
+// RCS-ID:      $Id$
+// Copyright:   (c) 2006 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_MSW_SEH_H_
+#define _WX_MSW_SEH_H_
+
+#if wxUSE_ON_FATAL_EXCEPTION
+
+    // the exception handler which should be called from the exception filter
+    //
+    // it calsl wxApp::OnFatalException() if possible
+    extern unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs);
+
+    // helper macro for wxSEH_HANDLE
+#if defined(__VISUALC__) && (__VISUALC__ <= 1200)
+    // some compilers don't understand that this code is unreachable and warn
+    // about no value being returned from the function without it, so calm them
+    // down
+    #define wxSEH_DUMMY_RETURN(rc) return rc;
+#else
+    #define wxSEH_DUMMY_RETURN(rc)
+#endif
+
+    // macros which allow to avoid many #if wxUSE_ON_FATAL_EXCEPTION in the code
+    // which uses them
+    #define wxSEH_TRY __try
+    #define wxSEH_IGNORE __except ( EXCEPTION_EXECUTE_HANDLER ) { }
+    #define wxSEH_HANDLE(rc)                                                  \
+        __except ( wxGlobalSEHandler(GetExceptionInformation()) )             \
+        {                                                                     \
+            /* use the same exit code as abort() */                           \
+            ::ExitProcess(3);                                                 \
+                                                                              \
+            wxSEH_DUMMY_RETURN(rc)                                            \
+        }
+
+#else // wxUSE_ON_FATAL_EXCEPTION
+    #define wxSEH_TRY
+    #define wxSEH_IGNORE
+    #define wxSEH_HANDLE(rc)
+#endif // wxUSE_ON_FATAL_EXCEPTION
+
+#if defined(__VISUALC__) && !defined(__WXWINCE__)
+    #include <eh.h>
+
+    // C++ exception to structured exceptions translator: we need it in order
+    // to prevent VC++ from "helpfully" translating structured exceptions (such
+    // as division by 0 or access violation) to C++ pseudo-exceptions
+    extern void wxSETranslator(unsigned int code, EXCEPTION_POINTERS *ep);
+
+    // up to VC 7.1 this warning ("calling _set_se_translator() requires /EHa")
+    // is harmless and it's easier to suppress it than use different makefiles
+    // for VC5 and 6 (which don't support /EHa at all) and VC7 (which does
+    // accept it but it seems to change nothing for it anyhow)
+    #if __VISUALC__ <= 1310
+        #pragma warning(disable: 4535)
+    #endif
+
+    // note that the SE translator must be called wxSETranslator!
+    #define DisableAutomaticSETranslator() _set_se_translator(wxSETranslator)
+#else // !__VISUALC__
+    // the other compilers do nothing as stupid by default so nothing to do for
+    // them
+    #define DisableAutomaticSETranslator()
+#endif // __VISUALC__/!__VISUALC__
+
+#endif // _WX_MSW_SEH_H_

src/msw/main.cpp

@@ -30,14 +30,11 @@
 #include "wx/scopeguard.h"
 
 #include "wx/msw/private.h"
+#include "wx/msw/seh.h"
 
 #if wxUSE_ON_FATAL_EXCEPTION
     #include "wx/datetime.h"
     #include "wx/msw/crashrpt.h"
-
-    #ifdef __VISUALC__
-        #include <eh.h>
-    #endif // __VISUALC__
 #endif // wxUSE_ON_FATAL_EXCEPTION
 
 #ifdef __WXWINCE__
@@ -118,16 +115,11 @@ unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs)
         wxGlobalSEInformation = pExcPtrs;
 
         // give the user a chance to do something special about this
-        __try
+        wxSEH_TRY
         {
             wxTheApp->OnFatalException();
         }
-        __except ( EXCEPTION_EXECUTE_HANDLER )
-        {
-            // nothing to do here, just ignore the exception inside the
-            // exception handler
-            ;
-        }
+        wxSEH_IGNORE      // ignore any exceptions inside the exception handler
 
         wxGlobalSEInformation = NULL;
 
@@ -140,7 +132,7 @@ unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs)
 
 #ifdef __VISUALC__
 
-static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep)
+void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep)
 {
     switch ( wxGlobalSEHandler(ep) )
     {
@@ -208,20 +200,11 @@ int wxEntry(int& argc, wxChar **argv)
 {
     DisableAutomaticSETranslator();
 
-    __try
+    wxSEH_TRY
     {
         return wxEntryReal(argc, argv);
     }
-    __except ( wxGlobalSEHandler(GetExceptionInformation()) )
-    {
-        wxFatalExit();
-
-#if !defined(_MSC_VER) || defined(__WXDEBUG__) || (defined(_MSC_VER) && _MSC_VER <= 1200)
-        // this code is unreachable but put it here to suppress warnings in some compilers
-        // and disable for others to supress warnings too
-        return -1;
-#endif // !__VISUALC__ in release build
-    }
+    wxSEH_HANDLE(-1)
 }
 
 #else // !wxUSE_ON_FATAL_EXCEPTION

src/msw/window.cpp

@@ -1970,7 +1970,7 @@ bool wxWindowMSW::DoPopupMenu(wxMenu *menu, int x, int y)
 #if defined(__WXWINCE__)
     UINT flags = 0;
 #else
-    UINT flags = TPM_RIGHTBUTTON | TPM_RECURSE;
+    UINT flags = TPM_RIGHTBUTTON;
 #endif
     ::TrackPopupMenu(hMenu, flags, point.x, point.y, 0, hWnd, NULL);