Added stack walker

Originally committed to SVN as r92.

core/changelog.txt

@@ -19,26 +19,27 @@ Please visit http://aegisub.net to download latest version
 - Implemented FexTracker, for automatically tracking positions on the video and placing text accordingly (Tentacle)
 - Drag-and-drop files onto the program no longer causes the subs to be unloaded every time, even if no subs were dropped (jfs)
 - 1,1+2 recombining lines where 1 is a substring of 2 no longer causes incorrect behavior. 1+2,2 similarly fixed. This fix also gives more sanity-checking in the recombining (jfs)
-- Replaced the subtitles grid with a custom control, which should hopefully behave and look better (AMZ)
+- Replaced the subtitles grid with a custom control, which should hopefully behave and look better. (AMZ)
-- Currently active line is now highlighted with a border in the grid (AMZ)
+- Currently active line is now highlighted with a border in the grid. (AMZ)
-- The subtitles grid can no longer receive focus (AMZ)
+- The subtitles grid can no longer receive focus. (AMZ)
-- Toolbar will now properly disable the Jump To buttons if more than one line is selected (AMZ)
+- Toolbar will now properly disable the Jump To buttons if more than one line is selected. (AMZ)
-- Fixed the toolbar "grey area" glitch (was actually a wxWidgets issue) (AMZ)
+- Fixed the toolbar "grey area" glitch (was actually a wxWidgets issue). (AMZ)
-- Default video zoom can now be set in config.dat and is defaulted to 100% (AMZ)
+- Default video zoom can now be set in config.dat and is defaulted to 100%. (AMZ)
-- Fixed crash in Translation and Styling assistants, when you attempted to move past end of file, and then play (AMZ)
+- Fixed crash in Translation and Styling assistants, when you attempted to move past end of file, and then play. (AMZ)
-- Fixed linked commit of times, so it will only commit both times if the other was changed (to prevent damage when editing multiple lines) (AMZ)
+- Fixed linked commit of times, so it will only commit both times if the other was changed (to prevent damage when editing multiple lines). (AMZ)
-- Fixed bug related to tag cycling, which would reset grid, move video and force a refresh of everything (slow, and could undo uncommited changes) (AMZ)
+- Fixed bug related to tag cycling, which would reset grid, move video and force a refresh of everything (slow, and could undo uncommited changes). (AMZ)
-- Fixed some bugs related to inserting overrides via the buttons over the edit box (AMZ)
+- Fixed some bugs related to inserting overrides via the buttons over the edit box. (AMZ)
-- Implemented Redo (AMZ)
+- Implemented Redo. (AMZ)
-- Fonts collector will now default collection to same folder as script (Set to "?script" on config.dat) (AMZ)
+- Fonts collector will now default collection to same folder as script (Set to "?script" on config.dat). (AMZ)
-- Alt+Left/Right on the video seek bar will now seek by increments of 10 frames (increment is customizeable in config.dat) (AMZ)
+- Alt+Left/Right on the video seek bar will now seek by increments of 10 frames (increment is customizeable in config.dat). (AMZ)
-- Added a simple audio resync method for video playback (AMZ)
+- Added a simple audio resync method afor video playback. (AMZ)
-- Audio timing will now apply to all selected lines, as well as active line (AMZ)
+- Audio timing will now apply to all selected lines, as well as active line. (AMZ)
-- Rows colliding with the currently active one will now be highlighted in grid (AMZ)
+- Rows colliding with the currently active one will now be highlighted in grid. (AMZ)
-- Selected comments are now highlighted in a different color (AMZ)
+- Selected comments are now highlighted in a different color. (AMZ)
-- Added a volume slider bar to audio mode (AMZ)
+- Added a volume slider bar to audio mode. (AMZ)
-- Fixed behavior of deleting and joining lines on subtitles grid (AMZ)
+- Fixed behavior of deleting and joining lines on subtitles grid. (AMZ)
-- Fixed some internal workings, which should make Aegisub use considerably less RAM (especially for large Karaoke files, 3x less RAM usage measured) (AMZ)
+- Fixed some internal workings, which should make Aegisub use considerably less RAM (especially for large Karaoke files, 3x less RAM usage measured). (AMZ)
+- Aegisub will now dump the stack to stack.txt when it crashes with a fatal exception, which might or might not work. (AMZ)
 
 
 = 1.09 beta - 2006.01.16 ===========================

core/dialog_hotkeys.cpp

@@ -38,6 +38,7 @@
 // Includes
 #include "dialog_hotkeys.h"
 #include "frame_main.h"
+#include "main.h"
 
 
 ///////////////

core/main.cpp

@@ -77,9 +77,9 @@ bool AegisubApp::OnInit() {
 
 		// App name
 		SetAppName(_T("Aegisub"));
-		#ifndef _DEBUG
+		//#ifndef _DEBUG
 		wxHandleFatalExceptions(true);
-		#endif
+		//#endif
 
 		// Set config file
 		GetFullPath(argv[0]);
@@ -133,13 +133,16 @@ bool AegisubApp::OnInit() {
 }
 
 
-#ifndef _DEBUG
+//#ifndef _DEBUG
 ///////////////////////
 // Unhandled exception
 void AegisubApp::OnUnhandledException() {
+	// Attempt to recover file
 	wxFileName orig(AssFile::top->filename);
 	wxString filename = folderName + orig.GetName() + _T(".RECOVER.ass");
 	AssFile::top->Save(filename,false,false);
+
+	// Inform user of crash
 	wxMessageBox(_T("Aegisub has encountered an unhandled exception error and will terminate now. The subtitles you were working on were saved to \"") + filename + _T("\", but they might be corrupt."), _T("Unhandled exception"), wxOK | wxICON_ERROR, NULL);
 }
 
@@ -147,12 +150,46 @@ void AegisubApp::OnUnhandledException() {
 ///////////////////
 // Fatal exception
 void AegisubApp::OnFatalException() {
+	// Attempt to recover file
 	wxFileName orig(AssFile::top->filename);
 	wxString filename = folderName + orig.GetName() + _T(".RECOVER.ass");
 	AssFile::top->Save(filename,false,false);
-	wxMessageBox(_T("Aegisub has encountered a fatal error and will terminate now. The subtitles you were working on were saved to \"") + filename + _T("\", but they have a considerable chance of being corrupt."), _T("Fatal error"), wxOK | wxICON_ERROR, NULL);
+
+	// Stack walk
+	StackWalker walker;
+	walker.WalkFromException();
+
+	// Inform user of crash
+	wxMessageBox(_T("Aegisub has encountered a fatal error and will terminate now. The subtitles you were working on were saved to \"") + filename + _T("\", but they might be corrupt."), _T("Fatal error"), wxOK | wxICON_ERROR, NULL);
+}
+//#endif
+
+
+////////////////
+// Stack walker
+void StackWalker::OnStackFrame(const wxStackFrame &frame) {
+	wxString dst = wxString::Format(_T("%03i - 0x%08X: "),frame.GetLevel(),frame.GetAddress()) + frame.GetName() + _T(" on ") + frame.GetFileName() + wxString::Format(_T(":%i"),frame.GetLine());
+	char temp[2048];
+	if (file.is_open()) {
+		strcpy(temp,dst.mb_str());
+		file << temp << std::endl;
+	}
+	else wxLogMessage(dst);
+}
+
+StackWalker::StackWalker() {
+	file.open(wxString(AegisubApp::folderName + _T("/stack.txt")).mb_str(),std::ios::out | std::ios::app);
+	if (file.is_open()) {
+		file << std::endl << "Begining stack dump:\n";
+	}
+}
+
+StackWalker::~StackWalker() {
+	if (file.is_open()) {
+		file << "End of stack dump.\n\n";
+		file.close();
+	}
 }
-#endif
 
 
 //////////////////

core/main.h

@@ -41,6 +41,8 @@
 ///////////////////
 // Include headers
 #include <wx/wxprec.h>
+#include <wx/stackwalk.h>
+#include <fstream>
 #include "aegisublocale.h"
 
 
@@ -71,14 +73,27 @@ public:
 	bool OnInit();
 	int OnRun();
 
-#ifndef _DEBUG
+//#ifndef _DEBUG
 	void OnUnhandledException();
 	void OnFatalException();
-#endif
+//#endif
 
 	//int OnRun();
 	DECLARE_EVENT_TABLE()
 };
 
 
+////////////////
+// Stack walker
+class StackWalker: public wxStackWalker {
+private:
+	std::ofstream file;
+
+public:
+	StackWalker();
+	~StackWalker();
+	void OnStackFrame(const wxStackFrame& frame);
+};
+
+
 #endif