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boot: implement --unhandled-exception=stalldebug (#1690)

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Using this option will stall the crashed thread until the debugger
attaches, so that the newly attached debugger can be handed over the
exception, enabling breaking at correct stack location.

`--no-exception-handlers` injector option controlled whether Dalamud
Crash Handler would intercept exceptions before. Those are now either
`default` or `none` option for `--unhandled-exception`.
This commit is contained in:
srkizer 2024-04-21 13:20:11 +09:00 • committed by GitHub
parent b85914c54c
commit 8ff4662f1f
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8 changed files with 101 additions and 13 deletions
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18
Dalamud.Boot/veh.cpp
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@ -136,6 +136,17 @@ static void append_injector_launch_args(std::vector<std::wstring>& args)
args.emplace_back(L"--msgbox2");
if ((g_startInfo.BootWaitMessageBox & DalamudStartInfo::WaitMessageboxFlags::BeforeDalamudConstruct) != DalamudStartInfo::WaitMessageboxFlags::None)
args.emplace_back(L"--msgbox3");
switch (g_startInfo.UnhandledException) {
case DalamudStartInfo::UnhandledExceptionHandlingMode::Default:
args.emplace_back(L"--unhandled-exception=default");
break;
case DalamudStartInfo::UnhandledExceptionHandlingMode::StallDebug:
args.emplace_back(L"--unhandled-exception=stalldebug");
break;
case DalamudStartInfo::UnhandledExceptionHandlingMode::None:
args.emplace_back(L"--unhandled-exception=none");
break;
}
args.emplace_back(L"--");
@ -148,6 +159,13 @@ static void append_injector_launch_args(std::vector<std::wstring>& args)
LONG exception_handler(EXCEPTION_POINTERS* ex)
{
if (g_startInfo.UnhandledException == DalamudStartInfo::UnhandledExceptionHandlingMode::StallDebug) {
while (!IsDebuggerPresent())
Sleep(100);
return EXCEPTION_CONTINUE_SEARCH;
}
// block any other exceptions hitting the handler while the messagebox is open
const auto lock = std::lock_guard(g_exception_handler_mutex);