No changes, just minor cleanup.

[wxWidgets.git] / src / msw / stackwalk.cpp

diff --git a/src/msw/stackwalk.cpp b/src/msw/stackwalk.cpp
index 90a07b745c956bec87900fe31cc88420dab488d6..54802e4c247772b7dff71fc8cd075eb3a5470672 100644 (file)
--- a/src/msw/stackwalk.cpp
+++ b/src/msw/stackwalk.cpp
@@ -56,7 +56,7 @@ void wxStackFrame::OnGetName()
     wxZeroMemory(symbolBuffer);
 
     PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)symbolBuffer;
-    pSymbol->SizeOfStruct = sizeof(symbolBuffer);
+    pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
     pSymbol->MaxNameLen = MAX_NAME_LEN;
 
     DWORD64 symDisplacement = 0;
@@ -68,7 +68,7 @@ void wxStackFrame::OnGetName()
                             pSymbol
                         ) )
     {
-        wxDbgHelpDLL::LogError(_T("SymFromAddr"));
+        wxDbgHelpDLL::LogError(wxT("SymFromAddr"));
         return;
     }
 
@@ -96,7 +96,7 @@ void wxStackFrame::OnGetLocation()
     {
         // it is normal that we don't have source info for some symbols,
         // notably all the ones from the system DLLs...
-        //wxDbgHelpDLL::LogError(_T("SymGetLineFromAddr"));
+        //wxDbgHelpDLL::LogError(wxT("SymGetLineFromAddr"));
         return;
     }
 
@@ -161,7 +161,7 @@ void wxStackFrame::OnParam(PSYMBOL_INFO pSymInfo)
 BOOL CALLBACK
 EnumSymbolsProc(PSYMBOL_INFO pSymInfo, ULONG WXUNUSED(SymSize), PVOID data)
 {
-    wxStackFrame *frame = wx_static_cast(wxStackFrame *, data);
+    wxStackFrame *frame = static_cast<wxStackFrame *>(data);
 
     // we're only interested in parameters
     if ( pSymInfo->Flags & IMAGEHLP_SYMBOL_INFO_PARAMETER )
@@ -190,7 +190,7 @@ void wxStackFrame::OnGetParam()
         // address, this is not a real error
         if ( ::GetLastError() != ERROR_INVALID_ADDRESS )
         {
-            wxDbgHelpDLL::LogError(_T("SymSetContext"));
+            wxDbgHelpDLL::LogError(wxT("SymSetContext"));
         }
 
         return;
@@ -205,7 +205,7 @@ void wxStackFrame::OnGetParam()
                             this                // data to pass to it
                         ) )
     {
-        wxDbgHelpDLL::LogError(_T("SymEnumSymbols"));
+        wxDbgHelpDLL::LogError(wxT("SymEnumSymbols"));
     }
 }
 
@@ -214,12 +214,16 @@ void wxStackFrame::OnGetParam()
 // wxStackWalker
 // ----------------------------------------------------------------------------
 
-void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip)
+void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip, size_t maxDepth)
 {
     if ( !wxDbgHelpDLL::Init() )
     {
-        wxLogError(_("Failed to get stack backtrace:\n%s"),
+        // don't log a user-visible error message here because the stack trace
+        // is only needed for debugging/diagnostics anyhow and we shouldn't
+        // confuse the user by complaining that we couldn't generate it
+        wxLogDebug(wxT("Failed to get stack backtrace: %s"),
                    wxDbgHelpDLL::GetErrorMessage().c_str());
+        return;
     }
 
     // according to MSDN, the first parameter should be just a unique value and
@@ -236,7 +240,7 @@ void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip)
                             TRUE    // load symbols for all loaded modules
                         ) )
     {
-        wxDbgHelpDLL::LogError(_T("SymInitialize"));
+        wxDbgHelpDLL::LogError(wxT("SymInitialize"));
 
         return;
     }
@@ -263,7 +267,7 @@ void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip)
 #endif // _M_IX86
 
     // iterate over all stack frames
-    for ( size_t nLevel = 0; ; nLevel++ )
+    for ( size_t nLevel = 0; nLevel < maxDepth; nLevel++ )
     {
         // get the next stack frame
         if ( !wxDbgHelpDLL::StackWalk
@@ -280,7 +284,7 @@ void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip)
                             ) )
         {
             if ( ::GetLastError() )
-                wxDbgHelpDLL::LogError(_T("StackWalk"));
+                wxDbgHelpDLL::LogError(wxT("StackWalk"));
 
             break;
         }
@@ -289,7 +293,7 @@ void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip)
         if ( nLevel >= skip )
         {
             wxStackFrame frame(nLevel - skip,
-                               (void *)sf.AddrPC.Offset,
+                               wxUIntToPtr(sf.AddrPC.Offset),
                                sf.AddrFrame.Offset);
 
             OnStackFrame(frame);
@@ -301,34 +305,38 @@ void wxStackWalker::WalkFrom(const CONTEXT *pCtx, size_t skip)
 #if 0
     if ( !wxDbgHelpDLL::SymCleanup(hProcess) )
     {
-        wxDbgHelpDLL::LogError(_T("SymCleanup"));
+        wxDbgHelpDLL::LogError(wxT("SymCleanup"));
     }
 #endif
 }
 
-void wxStackWalker::WalkFrom(const _EXCEPTION_POINTERS *ep, size_t skip)
+void wxStackWalker::WalkFrom(const _EXCEPTION_POINTERS *ep, size_t skip, size_t maxDepth)
 {
-    WalkFrom(ep->ContextRecord, skip);
+    WalkFrom(ep->ContextRecord, skip, maxDepth);
 }
 
-void wxStackWalker::WalkFromException()
+#if wxUSE_ON_FATAL_EXCEPTION
+
+void wxStackWalker::WalkFromException(size_t maxDepth)
 {
     extern EXCEPTION_POINTERS *wxGlobalSEInformation;
 
     wxCHECK_RET( wxGlobalSEInformation,
-                 _T("wxStackWalker::WalkFromException() can only be called from wxApp::OnFatalException()") );
+                 wxT("wxStackWalker::WalkFromException() can only be called from wxApp::OnFatalException()") );
 
     // don't skip any frames, the first one is where we crashed
-    WalkFrom(wxGlobalSEInformation, 0);
+    WalkFrom(wxGlobalSEInformation, 0, maxDepth);
 }
 
-void wxStackWalker::Walk(size_t skip)
+#endif // wxUSE_ON_FATAL_EXCEPTION
+
+void wxStackWalker::Walk(size_t skip, size_t WXUNUSED(maxDepth))
 {
     // to get a CONTEXT for the current location, simply force an exception and
     // get EXCEPTION_POINTERS from it
     //
     // note:
-    //  1. we additionally skip RaiseException() and WalkFromException() frames
+    //  1. we additionally skip RaiseException() and WalkFrom() frames
     //  2. explicit cast to EXCEPTION_POINTERS is needed with VC7.1 even if it
     //     shouldn't have been according to the docs
     __try
@@ -338,7 +346,8 @@ void wxStackWalker::Walk(size_t skip)
     __except( WalkFrom((EXCEPTION_POINTERS *)GetExceptionInformation(),
                        skip + 2), EXCEPTION_CONTINUE_EXECUTION )
     {
-        // never executed because of WalkFromException() return value
+        // never executed because the above expression always evaluates to
+        // EXCEPTION_CONTINUE_EXECUTION
     }
 }
 
@@ -382,21 +391,26 @@ void wxStackFrame::OnGetParam()
 // ----------------------------------------------------------------------------
 
 void
-wxStackWalker::WalkFrom(const CONTEXT * WXUNUSED(pCtx), size_t WXUNUSED(skip))
+wxStackWalker::WalkFrom(const CONTEXT * WXUNUSED(pCtx),
+                        size_t WXUNUSED(skip),
+                        size_t WXUNUSED(maxDepth))
 {
 }
 
 void
 wxStackWalker::WalkFrom(const _EXCEPTION_POINTERS * WXUNUSED(ep),
-                        size_t WXUNUSED(skip))
+                        size_t WXUNUSED(skip),
+                        size_t WXUNUSED(maxDepth))
 {
 }
 
-void wxStackWalker::WalkFromException()
+#if wxUSE_ON_FATAL_EXCEPTION
+void wxStackWalker::WalkFromException(size_t WXUNUSED(maxDepth))
 {
 }
+#endif // wxUSE_ON_FATAL_EXCEPTION
 
-void wxStackWalker::Walk(size_t WXUNUSED(skip))
+void wxStackWalker::Walk(size_t WXUNUSED(skip), size_t WXUNUSED(maxDepth))
 {
 }