Diagnostics System crashes HoloLens application on start

[FejZa]

Overview

When using the latest mrtk_development state ov vNext having the Diagnostics System enabled and visible will crash the application on start when deployed to HoloLens.

Expected Behavior

Diagnostics System is enabled and probably should be visible in the top left corner of the HoloLens FOV

Actual Behavior

Application crashes on start right after Made With Untiy splashscreen.

Steps to reproduce

• Import the latest vNext state
• Target UWP
• Configure Diagnostics System enabled and visible
• Configure the scene for MRTK
• Build and deploy to HoloLens

Unity Editor Version

2018.3.0b12

Mixed Reality Toolkit Release Version

mrtk_development branch

[StephenHodgson]

Do you have a stack trace of the crash?

[FejZa]

GameAssembly.dll!il2cpp::icalls::System::Microsoft::Win32::NativeMethods::GetProcessTimes(int handle, __int64 * creation, __int64 * exit, __int64 * kernel, __int64 * user) Line 30	C++
GameAssembly.dll!NativeMethods_GetProcessTimes_mFF1FA0FF468CE0698346FB025408FE4661F5F779(int ___handle0, __int64 * ___creation1, __int64 * ___exit2, __int64 * ___kernel3, __int64 * ___user4, const MethodInfo * method) Line 15064	C++
GameAssembly.dll!NativeMethods_GetProcessTimes_mCAB6B28520672C332F9250F565B1178788F8BF64(SafeProcessHandle_tEF75BF77F5F4E121334E2A97EE8E1F6685F38CF7 * ___handle0, __int64 * ___creation1, __int64 * ___exit2, __int64 * ___kernel3, __int64 * ___user4, const MethodInfo * method) Line 15094	C++
GameAssembly.dll!Process_GetProcessTimes_mAEE0C477ECD21E85F86EA92ED23C46A1007C5705(Process_t7F28AE318E6CCF89716D05E78E2CBD669767D6A1 * __this, const MethodInfo * method) Line 29835	C++
GameAssembly.dll!Process_get_TotalProcessorTime_mE9B83B34CBD1CA8217CE045CA1457D327BC5833A(Process_t7F28AE318E6CCF89716D05E78E2CBD669767D6A1 * __this, const MethodInfo * method) Line 29949	C++
GameAssembly.dll!CpuUseTracker_get_CurrentReadingInMs_m8AB075D7600BAA883FF56A22CB1A86C1D65AC1F5(CpuUseTracker_t5EDC3149F2EC745D9F02E83025ADF52DF5136F4E * __this, const MethodInfo * method) Line 19620	C++
GameAssembly.dll!DiagnosticsHandler_Update_m20155A96801B2850E85013C46538D5985A1FFCF9(DiagnosticsHandler_tBCD4A28503E79FCBC0B20602F1E48B67AEE7317F * __this, const MethodInfo * method) Line 19308	C++
GameAssembly.dll!RuntimeInvoker_TrueVoid_t22962CB4C05B1D89B55A6E1139F0E87A90987017(void(*)() methodPointer, const MethodInfo * methodMetadata, void * obj, void * * args) Line 34280	C++
GameAssembly.dll!il2cpp::vm::Runtime::Invoke(const MethodInfo * method, void * obj, void * * params, Il2CppException * * exc) Line 531	C++
GameAssembly.dll!il2cpp_runtime_invoke(const MethodInfo * method, void * obj, void * * params, Il2CppException * * exc) Line 973	C++

[FejZa]

Not sure if that helps, sorry. From what I can se the DiagnosticsHandler.cs Update method is invoked and then when trying to read some CPU processing data it fails. Weirdly enough the exception message says "{ProjectName}.exe has triggered a breakpoint"

[StephenHodgson]

Seems to throwing not implemented

IL2CPP_NOT_IMPLEMENTED_ICALL(NativeMethods::GetProcessTimes);

[FejZa]

Ugh. Probably should've seen that myself. Still trying to become friends with IL2CPP debugging. Glad you found the issue right away.

[StephenHodgson]

Doesn't help that there's and error looking up the error string as well lol

'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\Windows.Shell.ServiceHostBuilder.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\execmodelproxy.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\biwinrt.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\Clipc.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\Windows.Devices.Sensors.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\Windows.System.Profile.SystemId.dll'
Exception thrown at 0x7735F2B2 in MixedRealityToolkit.exe: Microsoft C++ exception: Il2CppExceptionWrapper at memory location 0x025DEA5C.
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\bcd.dll'
Exception thrown at 0x7735F2B2 in MixedRealityToolkit.exe: Microsoft C++ exception: Il2CppExceptionWrapper at memory location 0x025DEA5C.
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\FlightSettings.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\OneCoreCommonProxyStub.dll'
'MixedRealityToolkit.exe' (Win32): Unloaded 'C:\Windows\System32\Windows.ApplicationModel.dll'
Error looking up error string
UnityEngine.DebugLogHandler:Internal_Log(LogType, String, Object)
UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
UnityEngine.Logger:Log(LogType, Object)
UnityEngine.Debug:LogError(Object)
Microsoft.MixedReality.Toolkit.SDK.DiagnosticsSystem.DiagnosticsHandler:Update()
 
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug.bindings.h Line: 43)

_CRT_ASSERT caught:
'''C:\Valorem Projects\External\MixedRealityToolkit-Unity\Builds\UWP\Il2CppOutputProject\IL2CPP\libil2cpp\icalls\System\Microsoft.Win32\NativeMethods.cpp(30) : Assertion failed: 0 && "NativeMethods::GetProcessTimes"
'''