add crash log (call stack and minidump)

This was SVN commit r757.

source/lib/sysdep/sysdep.cpp

@@ -59,7 +59,6 @@ void debug_break()
 
 
 
-
 #ifdef _MSC_VER
 
 double round(double x)

source/lib/sysdep/sysdep.h

@@ -26,12 +26,16 @@ extern void debug_break();
 // shown in a dialog, which offers
 //   continue, break, suppress (ignore this assert), and exit
 /*
- * return values:
- *   0 - continue
- *   1 - suppress
- *   2 - break
- */
-extern int debug_assert_failed(const char* file, int line, const char* expr);
+* return values:
+*   0 - continue
+*   1 - suppress
+*   2 - break
+*/
+
+extern int debug_assert_failed(const char* source_file, int line, const char* expr);
+
+extern int debug_write_crashlog(const char* file);
+
 
 extern void check_heap();
 

source/lib/sysdep/win/dbghelp_funcs.h

@@ -11,3 +11,5 @@ FUNC(BOOL, SymGetTypeInfo, (HANDLE, DWORD64, ULONG, IMAGEHLP_SYMBOL_TYPE_INFO, v
 FUNC(BOOL, SymFromAddr, (HANDLE, DWORD64, DWORD64*, SYMBOL_INFO*))
 FUNC(ULONG, SymSetContext, (HANDLE, IMAGEHLP_STACK_FRAME*, IMAGEHLP_CONTEXT*))
 FUNC(BOOL, SymEnumSymbols, (HANDLE, ULONG64, const char*, PSYM_ENUMERATESYMBOLS_CALLBACK, void*))
+
+FUNC(BOOL, MiniDumpWriteDump, (HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, PMINIDUMP_EXCEPTION_INFORMATION, PMINIDUMP_USER_STREAM_INFORMATION, PMINIDUMP_CALLBACK_INFORMATION))

source/lib/sysdep/win/wdbg.cpp

@@ -611,10 +611,15 @@ static void set_exception_handler()
 }
 
 
+static void init()
+{
+	ONCE(dbg_init());
+}
+
 
 int debug_assert_failed(const char* file, int line, const char* expr)
 {
-	ONCE(dbg_init());
+	init();
 
 	int pos = swprintf(buf, 1000, L"Assertion failed in %hs, line %d: %hs\r\n", file, line, expr);
 	walk_stack(2, buf+pos);
@@ -635,3 +640,59 @@ static int wdbg_init()
 #pragma data_seg(".LIB$WIB")	// first
 WIN_REGISTER_FUNC(wdbg_init);
 #pragma data_seg()
+
+
+// from http://www.codeproject.com/debug/XCrashReportPt3.asp
+static void DumpMiniDump(HANDLE hFile, PEXCEPTION_POINTERS excpInfo)
+{
+/*
+	if (excpInfo == NULL) 
+	{
+		// Generate exception to get proper context in dump
+		__try 
+		{
+			OutputDebugString("RaiseException for MinidumpWriteDump\n");
+			RaiseException(EXCEPTION_BREAKPOINT, 0, 0, NULL);
+		} 
+		__except(DumpMiniDump(hFile, GetExceptionInformation()), EXCEPTION_CONTINUE_EXECUTION) 
+		{
+		}
+	}
+	else
+	{*/
+		MINIDUMP_EXCEPTION_INFORMATION eInfo;
+		eInfo.ThreadId = GetCurrentThreadId();
+		eInfo.ExceptionPointers = excpInfo;
+		eInfo.ClientPointers = FALSE;
+
+		// note:  MiniDumpWithIndirectlyReferencedMemory does not work on Win98
+		_MiniDumpWriteDump(
+			GetCurrentProcess(),
+			GetCurrentProcessId(),
+			hFile,
+			MiniDumpNormal,
+			excpInfo ? &eInfo : NULL,
+			NULL,
+			NULL);
+//	}
+}
+
+int debug_write_crashlog(const char* file)
+{
+	init();
+
+	int len = swprintf(buf, 1000, L"Undefined state reached.\r\n");
+	walk_stack(2, buf+len);
+
+	FILE* f = fopen(file, "w");
+	fwrite(buf, pos-buf, 2, f);
+	fclose(f);
+
+	char dmp_file[MAX_PATH];
+	strcpy(dmp_file, file);
+	strcat(dmp_file, ".mdmp");
+	HANDLE hFile = CreateFile(dmp_file, GENERIC_WRITE, FILE_SHARE_WRITE, 0, CREATE_ALWAYS, 0, 0);
+	DumpMiniDump(hFile, 0);
+
+	return 0;
+}

source/lib/sysdep/win/win.cpp

@@ -321,8 +321,10 @@ extern u64 rdtsc();
 extern u64 PREVTSC;
 u64 PREVTSC;
 
+
 int entry()
 {
+
 #ifdef _MSC_VER
 u64 TSC=rdtsc();
 debug_out(

source/main.cpp

@@ -155,14 +155,14 @@ static int write_sys_info();
 // TODO: load from language file
 // these will need to be variables; better to make an index into string table
 // (as with errors)? if it's a string, what happens if lang file load failed?
-#define STR_UNHANDLED_EXCEPTION L"unhandled exception"
+#define STR_UNHANDLED_EXCEPTION L"unhandled exception. crash log has been written; please report at bugs.wildfiregames.com"
 #define STR_SDL_INIT_FAILED     L"SDL library initialization failed: %hs\n"
 #define STR_SET_VMODE_FAILED    L"could not set %dx%d graphics mode: %hs\n"
 #define STR_OGL_EXT_MISSING     L"required ARB_multitexture or ARB_texture_env_combine extension not available"
 #define STR_MAP_LOAD_FAILED     L"Failed to load map %hs\n"
 
 
-static void Die(int err, const wchar_t* fmt, ...)
+void Die(int err, const wchar_t* fmt, ...)
 {
 	va_list args;
 	va_start(args, fmt);
@@ -179,6 +179,7 @@ static void Die(int err, const wchar_t* fmt, ...)
 	wdisplay_msg(L"0ad", buf);
 
 	write_sys_info();
+	debug_write_crashlog("crashlog.txt");
 
 	exit(EXIT_FAILURE);
 }