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restoring desktop settings and minimizing the window when crashing

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making sure the crash message box is always visible
This commit is contained in:
myT 2017-06-02 18:59:23 +02:00
parent c1c9031f13
commit 1ef18feab5
1 changed files with 47 additions and 3 deletions
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50
code/win32/win_exception.cpp
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@ -2,6 +2,7 @@
#include "../qcommon/qcommon.h"
#include "../qcommon/crash.h"
#include "win_local.h"
#include "glw_win.h"
#include <DbgHelp.h>
#include <strsafe.h>
@ -249,6 +250,10 @@ static const char* WIN_GetAccessViolationCodeString( DWORD avCode )
}
}
// We save those separately because the handler might change related state before writing the report.
static qbool wasDevModeValid = qfalse;
static qbool wasMinimized = qfalse;
static void WIN_WriteTextData( const char* filePath, debug_help_t* debugHelp, EXCEPTION_RECORD* pExceptionRecord )
{
FILE* const file = fopen(filePath, "w");
@ -273,6 +278,9 @@ static void WIN_WriteTextData( const char* filePath, debug_help_t* debugHelp, EX
JSONW_StringValue("windows_version", "%d.%d.%d", osVersion[0], osVersion[1], osVersion[2]);
}
JSONW_BooleanValue("device_mode_changed", wasDevModeValid);
JSONW_BooleanValue("minimized", wasMinimized);
Crash_PrintToFile(__argv[0]);
JSONW_EndFile();
@ -407,6 +415,23 @@ static qbool WIN_ShouldContinueSearch( DWORD exceptionCode )
}
}
// Debugging a full-screen app with a single screen is a horrendous experience.
// With our custom handler, we can handle crashes by restoring the desktop settings
// and hiding the main window before letting the debugger take over.
// This will only help for crashes though, breakpoints will still be fucked up.
// Work-around for breakpoints: use __debugbreak(); and don't launch the app through the debugger.
static qbool WIN_WouldDebuggingBeOkay()
{
if (g_wv.monitorCount >= 2 || g_wv.hWnd == NULL)
return qtrue;
const qbool fullScreen = (GetWindowLongA(g_wv.hWnd, GWL_STYLE) & WS_POPUP) != 0;
if (!fullScreen)
return qtrue;
return qfalse;
}
//
// The exception handler's job is to reset system settings that won't get reset
// as part of the normal process clean-up by the OS.
@ -440,15 +465,34 @@ LONG CALLBACK WIN_HandleException( EXCEPTION_POINTERS* ep )
}
__try {
WIN_EndTimePeriod();
} __except(EXCEPTION_EXECUTE_HANDLER) {}
WIN_EndTimePeriod(); // system timer resolution
} __except (EXCEPTION_EXECUTE_HANDLER) {}
if (IsDebuggerPresent() && WIN_WouldDebuggingBeOkay())
return EXCEPTION_CONTINUE_SEARCH;
__try {
wasDevModeValid = glw_state.cdsDevModeValid;
if (glw_state.cdsDevModeValid)
WIN_SetDesktopDisplaySettings();
} __except (EXCEPTION_EXECUTE_HANDLER) {}
if (g_wv.hWnd != NULL) {
__try {
wasMinimized = (qbool)!!IsIconic(g_wv.hWnd);
} __except(EXCEPTION_EXECUTE_HANDLER) {}
__try {
ShowWindow(g_wv.hWnd, SW_MINIMIZE);
} __except(EXCEPTION_EXECUTE_HANDLER) {}
}
if (exc_exitCalled || IsDebuggerPresent())
return EXCEPTION_CONTINUE_SEARCH;
static const char* mbTitle = "CNQ3 Crash";
static const char* mbMsg = "CNQ3 crashed!\n\nYes to generate a crash report\nNo to continue after attaching a debugger\nCancel to quit";
const int result = MessageBoxA(NULL, mbMsg, mbTitle, MB_YESNOCANCEL | MB_ICONERROR);
const int result = MessageBoxA(NULL, mbMsg, mbTitle, MB_YESNOCANCEL | MB_ICONERROR | MB_TOPMOST);
if (result == IDYES) {
WIN_WriteExceptionFiles(ep);
if (exc_reportWritten)