MethodDesc>] -list -clear <pending breakpoint number> -clearallIf the specified module and method have not been loaded, this command waits for a notification that the module was loaded and just-in-time (JIT) compiled before creating a breakpoint.
You can manage the list of pending breakpoints by using the -list, -clear, and -clearall options:
The -list option generates a list of all the pending breakpoints. If a pending breakpoint has a non-zero module ID, that breakpoint is specific to a function in that particular loaded module. If the pending breakpoint has a zero module ID, that breakpoint applies to modules that have not yet been loaded.
Use the -clear or -clearall option to remove pending breakpoints from the list.
The -p option shows arguments to the managed function.
The -l option shows information on local variables in a frame. The SOS Debugging Extension cannot retrieve local names, so the output for local names is in the format <local address> = <value>.
The -a option is a shortcut for -l and -p combined.
The -n option disables the display of source file names and line numbers. If the debugger has the option SYMOPT_LOAD_LINES specified, SOS will look up the symbols for every managed frame and if successful will display the corresponding source file name and line number. The -n (No line numbers) parameter can be specified to disable this behavior.
The -f option (full mode) displays the native frames intermixing them with the managed frames and the assembly name and function offset for the managed frames. This option does not display native frames when used with dotnet-dump.
The -r option dumps the registers for each stack frame.
The -all option dumps all the managed threads' stacks.
Context pointer, if available. This command is only supported on Windows.-or-
DA [-start <startIndex>] [-length <length>] [-detail] [-nofields] array object address>
The -start option specifies the starting index at which to display elements.
The -length option specifies how many elements to show.
The -details option displays details of the element using the DumpObj and DumpVC formats.
The -nofields option prevents arrays from displaying. This option is available only when the -detail option is specified.
async void, async Task, async Task<T>, async ValueTask, and async ValueTask<T>.The output includes a block of details for each async state machine object found. These details include:
- A line for the type of the async state machine object, including its MethodTable address, its object address, its size, and its type name.
- A line for the state machine type name as contained in the object.
- A listing of each field on the state machine.
- A line for a continuation from this state machine object, if one or more has been registered.
- Discovered GC roots for this async state machine object.
The DumpAssembly command lists multiple modules, if they exist.
You can get an assembly address by using the DumpDomain command.
EEClass structure associated with a type.The DumpClass command displays static field values but does not display nonstatic field values.
Use the DumpMT, DumpObj, Name2EE, or Token2EE command to get an EEClass structure address.
The DumpHeap command displays a warning if it detects excessive fragmentation in the garbage collector heap.
The -stat option restricts the output to the statistical type summary.
The -strings option restricts the output to a statistical string value summary.
The -short option limits output to just the address of each object. This lets you easily pipe output from the command to another debugger command for automation.
The -min option ignores objects that are less than the size parameter, specified in bytes.
The -max option ignores objects that are larger than the size parameter, specified in bytes.
The -thinlock option reports ThinLocks. For more information, see the SyncBlk command.
The -startAtLowerBound option forces the heap walk to begin at the lower bound of a supplied address range. During the planning phase, the heap is often not walkable because objects are being moved. This option forces DumpHeap to begin its walk at the specified lower bound. You must supply the address of a valid object as the lower bound for this option to work. You can display memory at the address of a bad object to manually find the next method table. If the garbage collection is currently in a call to memcopy, you may also be able to find the address of the next object by adding the size to the start address, which is supplied as a parameter.
The -mt option lists only those objects that correspond to the specified MethodTable structure.
The -type option lists only those objects whose type name is a substring match of the specified string.
The start parameter begins listing from the specified address.
The end parameter stops listing at the specified address.
Dynamic MSIL is emitted differently than MSIL that's loaded from an assembly. Dynamic MSIL refers to objects in a managed object array rather than to metadata tokens.
The in-memory stress log helps you diagnose stress failures without using locks or I/O. To enable the stress log, set the following registry keys under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework:
(DWORD) StressLog = 1
(DWORD) LogFacility = 0xffffffff
(DWORD) StressLogSize = 65536
The optional -addr option lets you specify a stress log other than the default log.
MethodDesc structure at the specified address. You can use the IP2MD command to get the MethodDesc structure address from a managed function.
Each managed object contains a method table pointer.
You can use the DumpDomain or DumpAssembly command to retrieve a module's address.
-or-
DO <object address>
EEClass structure information, the method table, and the size of the object.You can use the DumpStackObjects command to retrieve an object's address.
You can run the DumpObj command on fields of type CLASS because they are also objects.
The -nofields option prevents fields of the object being displayed, it is useful for objects like String.
top stack [bottom stack]] The -EE option causes the DumpStack command to display only managed functions. Use the top and bottom parameters to limit the stack frames displayed on x86 platforms.
The -n option disables the display of source file names and line numbers. If the debugger has the option SYMOPT_LOAD_LINES specified, SOS will look up the symbols for every managed frame and if successful will display the corresponding source file name and line number. The -n (No line numbers) parameter can be specified to disable this behavior.
Sig structure at the specified address.top stack [bottom stack]]-or-
DSO [-verify] [top stack [bottom stack]]
The -verify option validates each non-static CLASS field of an object field.
Use the DumpStackObject command with stack tracing commands such as K (windbg) or bt (lldb) along with the clrstack command to determine the values of local variables and parameters.
The MethodTable parameter allows the DumpVC command to correctly interpret fields. Value classes do not have a method table as their first field.
The -gc and -loader options limit the output of this command to garbage collector or loader data structures.
The information for the garbage collector lists the ranges of each segment in the managed heap. If the pointer falls within a segment range given by -gc, the pointer is an object pointer.
The -EE option is passed directly to the DumpStack command. The -short parameter limits the output to the following kinds of threads:
Threads that have taken a lock.
Threads that have been stalled in order to allow a garbage collection.
Threads that are currently in managed code.
try block) and the handler block (the catch block).dotnet-dump. The -detail option displays extra information about any SyncBlocks that need to be cleaned up, and any RuntimeCallableWrappers (RCWs) that await cleanup. Both of these data structures are cached and cleaned up by the finalizer thread when it runs.
The -allReady option displays all objects that are ready for finalization, regardless of whether they are already marked by the garbage collection as such, or will be marked by the next garbage collection. The objects that are in the "ready for finalization" list are finalizable objects that are no longer rooted. This option can be very expensive, because it verifies whether all the objects in the finalizable queues are still rooted.
The -short option limits the output to the address of each object. If it is used in conjunction with -allReady, it enumerates all objects that have a finalizer that are no longer rooted. If it is used independently, it lists all objects in the finalizable and "ready for finalization" queues.
The -perdomain option arranges the statistics by application domain.
Use the GCHandles command to find memory leaks caused by garbage collector handle leaks. For example, a memory leak occurs when code retains a large array because a strong garbage collector handle still points to it, and the handle is discarded without freeing it.
Only supported on Windows.
The GCRoot command examines the entire managed heap and the handle table for handles within other objects and handles on the stack. Each stack is then searched for pointers to objects, and the finalizer queue is also searched.
This command does not determine whether a stack root is valid or is discarded. Use the clrstack and U commands to disassemble the frame that the local or argument value belongs to in order to determine if the stack root is still in use.
The -nostacks option restricts the search to garbage collector handles and reachable objects.
The -all option forces all roots to be displayed instead of just the unique roots.
faq] The faq parameter displays answers to frequently asked questions.
Hist commands. Generally, you do not have to explicitly call HistClear, because each HistInit cleans up the previous resources.
The root value can be used to track the movement of an object through the garbage collections.
MethodDesc structure at the specified address in code that has been JIT-compiled.Pass 0 to disable this feature or 1 to enable this feature. By default, the MinidumpMode value is set to 0.
Minidumps created with the .dump /m command or .dump command have limited CLR-specific data and allow you to run only a subset of SOS commands correctly. Some commands may fail with unexpected errors because required areas of memory are not mapped or are only partially mapped. This option protects you from running unsafe commands against minidumps.
Only supported with Windbg.
-or-
Name2EE <module name>!<type or method name>
MethodTable structure and EEClass structure for the specified type or method in the specified module.The specified module must be loaded in the process.
To get the proper type name, browse the module by using the Ildasm.exe (IL Disassembler). You can also pass * as the module name parameter to search all loaded managed modules. The module name parameter can also be the debugger's name for a module, such as mscorlib or image00400000.
This command supports the Windows debugger syntax of <module>!<type>. The type must be fully qualified.
The -aggregate option can be used in conjunction with the -stat argument to get a detailed view of the types that are still rooted. By using !dumpheap -stat and !objsize -aggregate -stat, you can determine which objects are no longer rooted and diagnose various memory issues.
Only supported on Windows.
-or-
PE [-nested] [<Exception object address>]
The -nested option displays details about nested exception objects.
The -lines option displays source information, if available.
You can use this command to format and view the _stackTrace field, which is a binary array.
Normally, SOS attempts to find an installed .NET Core runtime to run its managed code automatically but this command is available if it fails. The default is to use the same runtime (libcoreclr) being debugged. Use this command if the default runtime being debugged isn't working enough to run the SOS code or if the version is less than 2.1.0.
If you received the following error message when running a SOS command, use this command to set the path to 2.1.0 or greater .NET Core runtime.
(lldb) clrstackError: Fail to initialize CoreCLR 80004005 ClrStack failed
(lldb) sethostruntime /usr/share/dotnet/shared/Microsoft.NETCore.App/2.1.6
You can use the "dotnet --info" in a command shell to find the path of an installed .NET Core runtime.
The -ms option enables downloading from the public Microsoft symbol server.
The -disable option turns on the symbol download support.
The -cache <cache-path> option specifies a symbol cache directory. The default is $HOME/.dotnet/symbolcache if not specified.
The -directory option adds a path to search for symbols. Can be more than one.
The -sympath option adds server, cache, and directory paths in the Windows symbol path format.
The -log option enables symbol download logging.
The -loadsymbols option attempts to download the native .NET Core symbols for the runtime. Supported on lldb and dotnet-dump.
The -derived option catches the specified exception and every exception that derives from the specified exception.
Only supported with Windbg.
SyncBlock structure or all SyncBlock structures. If you do not pass any arguments, the SyncBlk command displays the SyncBlock structure corresponding to objects that are owned by a thread. A SyncBlock structure is a container for extra information that does not need to be created for every object. It can hold COM interop data, hash codes, and locking information for thread-safe operations.
The Threads command displays the debugger shorthand ID, the CLR thread ID, and the operating system thread ID. Additionally, the Threads command displays a Domain column that indicates the application domain in which a thread is executing, an APT column that displays the COM apartment mode, and an Exception column that displays the last exception thrown in the thread.
The -live option displays threads associated with a live thread.
The -special option displays all special threads created by the CLR. Special threads include garbage collection threads (in concurrent and server garbage collection), debugger helper threads, finalizer threads, AppDomain unload threads, and thread pool timer threads.
value parameter is the value of the State field in the Threads report output.MethodTable structure or MethodDesc structure. You can pass * for the module name parameter to find what that token maps to in every loaded managed module. You can also pass the debugger's name for a module, such as mscorlib or image00400000.
MethodDesc structure pointer for the method or by a code address within the method body. The U command displays the entire method from start to finish, with annotations that convert metadata tokens to names. The -gcinfo option causes the U command to display the GCInfo structure for the method.
The -ehinfo option displays exception information for the method. You can also obtain this information with the EHInfo command.
The -n option disables the display of source file names and line numbers. If the debugger has the option SYMOPT_LOAD_LINES specified, SOS looks up the symbols for every managed frame and, if successful, displays the corresponding source file name and line number. You can specify the -n option to disable this behavior.
Heap corruptions can be caused by platform invoke calls that are constructed incorrectly.
FAQs
What is Dotnet SOS? ›
Description. The dotnet-sos global tool installs the SOS debugger extension. This extension lets you inspect managed . NET Core state from native debuggers like lldb and windbg.
What is SOS extension for WinDbg? ›The SOS Debugging Extension (SOS. dll) helps you debug managed programs in Visual Studio and in the Windows debugger (WinDbg.exe) by providing information about the internal Common Language Runtime (CLR) environment. This tool requires your project to have unmanaged debugging enabled.
Where can I find SOS DLL? ›You can find it in C:\WINDOWS\Microsoft.NET\Framework\v4. 0.30319\sos. dll path. To get SOS automatically downloaded you need to have the Microsoft symbol servers set up in the _NT_SYMBOL_PATH environment variable.
How do I debug a managed code in WinDbg? ›You can use the Windows debuggers (WinDbg, CDB, and NTSD) to debug target applications that contain managed code. To debug managed code, you must load the SOS debugging extension (sos. dll) and a data access component (mscordacwks. dll).
What is .NET Maui used for? ›NET Multi-platform App UI (. NET MAUI) is a cross-platform framework for creating native mobile and desktop apps with C# and XAML. Using . NET MAUI, you can develop apps that can run on Android, iOS, macOS, and Windows from a single shared code-base.
What is system Diagnostics C#? ›Diagnostics useful actions. The namespace System. Diagnostics provides a set of attributes and classes to interact with the system process, event managers, performance counts, etc. This namespace can help us too in debugging jobs. Let's review the useful actions inside System.
Is WinDbg debugging tool? ›WinDbg is a kernel-mode and user-mode debugger that's included in Debugging Tools for Windows.
How do I enable WinDbg in Windows 10? ›Get started using WinDbg. On the host computer, open WinDbg and establish a kernel-mode debugging session with the target computer. To open the debugger documentation CHM file, go to the Help menu and select Contents. The debugger documentation is also available online in Debugging Tools for Windows.
How do I enable SOS? ›On your phone, open the Settings app. Emergency SOS. Turn Use Emergency SOS on. You can also turn Play alarm sound on to play a loud sound when Emergency SOS is starting.
Can you use SOS without service? ›When you're in a place with no cellular and Wi-Fi coverage, you can still use your iPhone to text emergency services via satellite connection.
How do I setup my SOS? ›
- Pull down your notification bar and open “Settings”
- Scroll down and select “Safety and emergency”
- Select “Send SOS messages”
- Toggle it on and choose your emergency contacts (who will receive the message)
- Choose if you want the SOS to be triggered by pressing the side button 3 or 4 times.
Enable mixed-mode debugging for a managed calling app
Enable native code debugging in the properties. For C#, select Debug in the left pane, select Open debug launch profiles UI, then select the Enable native code debugging check box, and then close the properties page to save the changes.
Isolate the source of the bug. Identify the cause of the bug. Determine a fix for the bug. Apply the fix and test it.
What are OllyDbg and WinDbg? ›OllyDbg is a user mode debugger which is capable of debugging only user mode executables such as Exe. Note that Windbg is a powerful debugger which encompasses the functionality of Ollydbg as well. However, its a command line debugger which beginners find it difficult to dealt with in beginning.
Is .NET MAUI worth it? ›So, is . NET MAUI ready for the real world on your next project? If you need a cross-platform UI solution that can run on any or all of Android, iOS, Mac, Windows, and potentially the Web, and you're prepared for a bit of a bumpy ride then I would say absolutely yes.
Is .NET MAUI available? ›NET. Currently, MAUI supports writing applications that run on Android 5+, iOS 10+, macOS 10.15+, Windows 10 version 1809+, or Windows 11. MAUI application project is a single . NET project.
Should you use .NET MAUI? ›NET MAUI good? Yes. Because . NET MAUI is built on the already reliable Xamarin Forms product, it had already proven itself a capable alternative to other native-UI cross-platform solutions before it was even launched.
What are 4 types of diagnostic testing? ›- Biopsy. A biopsy helps a doctor diagnose a medical condition. ...
- Colonoscopy. ...
- CT scan. ...
- CT scans and radiation exposure in children and young people. ...
- Electrocardiogram (ECG) ...
- Electroencephalogram (EEG) ...
- Gastroscopy. ...
- Eye tests.
To define the TRACE conditional compilation symbol in C#, add the /d:TRACE option to the compiler command line when you compile your code using a command line, or add #define TRACE to the top of your file. In Visual Basic, add the /d:TRACE=True option to the compiler command line or add #Const TRACE=True to the file.
How do I run a boot diagnostic? ›To reboot in a diagnostic startup:
Press WINDOWS-R on the keyboard to bring up the Run window, enter MSCONFIG and click OK. Under the General tab, click "Diagnostic startup."
Which is the most powerful debugging tool of all? ›
The DevPartner Studio is a suite of tools that allows developers to manage the code requirements effectively. Here are some reasons why DevPartner is one of the best debugging tools available: Detection of memory leaks. Performance analysis.
What are the 3 debugging tools in an embedded system? ›- Simulators.
- Microcontroller starter kits.
- Emulator.
Best Debugging Tools include:
Chrome DevTools, Progress Telerik Fiddler, GDB (GNU Debugger), SonarLint, Data Display Debugger, Froglogic Squish, TotalView HPC Debugging Software, and Rollbar.
Using a symbol server: srv*
If you include the string srv* in your symbol path, the debugger uses a symbol server to get symbols from the default symbol store. For example, the following command tells the debugger to get symbols from the default symbol store. These symbols aren't cached on the local computer.
- Identify the host and target systems. ...
- Determine the debugger type: kernel mode or user mode. ...
- Choose your debugger environment. ...
- Determine how to connect the target and host. ...
- Choose either 32-bit or 64-bit debugging tools. ...
- Configure symbols.
Missing call stack
The command is the primary way of memory leak detection in WinDbg to look at the call stack of memory allocations. Without having the stack, the process of memory leak elimination gets much harder or straight-up impossible.
Firstly, go to https://store.rg-adguard.net/ and paste the link of WinDBG Preview from Microsoft Store. Paste in the search bar and press the Tick button. The website will then obtain the package's URL for you to download the AppX file.
What is WinDbg tool? ›WinDbg is a multipurpose debugger for the Microsoft Windows computer operating system, distributed by Microsoft. Debugging is the process of finding and resolving errors in a system; in computing it also includes exploring the internal operation of software as a help to development.
How do I debug Windows kernel boot? ›To enable boot debugging, use the BCDEdit /bootdebug command and specify the appropriate boot component. If you wish to perform kernel debugging after Windows starts, use the BCDEdit /debug command as well. You must also select a debugging connection, just as in normal kernel debugging.
What does SOS stand for? ›In Morse Code, “SOS” is a signal sequence of three dits, three dats, and another three dits spelling “S-O-S”. The expression “Save Our Ship” was probably coined by sailors to signal for help from a vessel in distress.
How do you use the SOS feature? ›
- Rapidly press the side (or top) button five times. The Emergency Call slider will appear.
- Drag the Emergency SOS slider to call emergency services.
The SOS QR app will help you be prepared and stay safe during an emergency situation, either at or away from home, with: a one-touch SOS button that alerts your emergency contacts with your GPS location, an emergency record attached to a personal QR code that lets emergency responders view your critical health ...
What happens if you activate SOS? ›Emergency SOS sends updates about your current location, battery status, and when you start and end a phone call to your contacts. You must allow Google Maps to see your location at all times if you want to use this feature.
What happens if I click SOS? ›The Safety Connect® operator will answer the call. If there is no verbal response from the vehicle's occupants, the operator will dispatch emergency personnel to the vehicle location.
Can I turn my phone into a satellite phone? ›Powered by the Iridium® network, Iridium GO! connects to your iOS or Android cell phone, expanding your coverage area to…the entire planet. Iridium GO! is a small, lightweight, and rugged satellite communicator that overcomes the limits of cellular networks, letting you expand your adventures.
How do I download mySOS? ›- Download mySOS SA emergency app onto your smartphone, by using Google Play or the App Store. Check that you see the mySOS icon on your phone. ...
- If you have an emergency at any stage during the race, open mySOS. Clear the automatic emergency countdown timer. ...
- Choose for whom. Explain your emergency to the emergency coordinator.
The sos command collects information about a system such as hardware configuration, software configuration, and operational state.
What is a dotnet worker service? ›17th February 2022. Worker Services were introduced in . NET Core 3.0, and allows for running background services through the use of a hosted service. Another way of running background services is to run hosted services within an ASP.NET Core web application.
Is dot net obsolete? ›NET framework is highly outdated. Of course, the main reason behind this is the lack of cross-platform development, which was rectified in future versions released by Microsoft. Most developers and programmers prefer programming languages and frameworks that offer flexibility when working with them.
What is .NET coding used for? ›NET is an open-source platform for building desktop, web, and mobile applications that can run natively on any operating system. The . NET system includes tools, libraries, and languages that support modern, scalable, and high-performance software development. An active developer community maintains and supports the .
How many types of SOS are there? ›
There are four types of system of systems: directed, acknowledged, collaborative and virtual. In most cases, an SoS is a combination of these types and may change over time. The type of a SoS is based on the degree of independence of its constituents as noted below: Directed.
How does SOS device work? ›Here's how it works
When you make a call with SOS, your iPhone will automatically call the local emergency number. In some countries and regions, you may need to choose the service you need. For example, in China mainland you can choose police, fire or ambulance.
- Ensure you are logged in as 'root'
- Verify you have the 'sos' RPM installed : # rpm -qa | grep -i sos. If not installed, you will need to install it : ...
- # sosreport.
- Input your name when requested.
- Input your Dell case number when requested.
- The output is a .tar.xz file saved in the '/tmp' folder.
- Create a new project.
- Select App under . NET Core in the sidebar.
- Select Worker under ASP.NET Core. Select Next.
- Select . NET Core 3.0 or later for the Target Framework. Select Next.
- Provide a name in the Project Name field. Select Create.
Go to Control Panel select “Services” inside “Administrative Tools”. Open Run window (Window + R) and type services.
How do I create a worker Service in .NET core? ›Create a new project
To create a new Worker Service project with Visual Studio, you'd select File > New > Project.... From the Create a new project dialog search for "Worker Service", and select Worker Service template. If you'd rather use the . NET CLI, open your favorite terminal in a working directory.
A survey released by Stack Overflow this year in 2022 categorized the . NET Framework and . NET Core into one. It had increased in popularity from 34.2 percent to 34.55 percent to become the most popular frameworks list this year.
What is replacing .NET framework? ›NET Core will replace . NET Framework. You will be able to use it to target Windows, Linux, macOS, iOS, Android, tvOS, watchOS, WebAssembly, and more.
Is .NET outdated 2022? ›NET's product cycle is coming to a close. While it's not in the immediate future, it certainly has already been hit with an end date, with v. 4.7 ending in 2022.” In 2019, Microsoft announced that the .
Is .NET same as C#? ›Microsoft's implementation of C# is also heavily integrated with the . NET framework, so it's understandable that these two concepts would be confused, but they are different things. C# is a programming language and . NET is the framework and runtime that C# programs are built with and run on.
What language does .NET use? ›
Languages. You can write .NET apps in C#, F#, or Visual Basic. C# is a simple, modern, object-oriented, and type-safe programming language. F# is a programming language that makes it easy to write succinct, robust, and performant code.
Why is .NET still used? ›Although ASP.NET Core is the latest version of ASP.NET, many developers still use the original ASP.NET because it has many features that are still relevant today. Additionally, it's also well supported by Microsoft, so users don't have to worry about it becoming outdated.