What is user debugging?

What is user debugging?

User-based debugging is a variant of external debugging. User-based debugging makes it possible to interrupt and debug the processing of HTTP requests and RFC requests on an AS ABAP.

What does kernel debugging do?

A kernel debugger is a debugger present in some operating system kernels to ease debugging and kernel development by the kernel developers. The WinDbg GUI debugger can also be used to debug kernels on local and remote machines.

How do I know if kernel is debugging?

Kernel-mode code can determine the status of kernel debugging by using the following variables and routines: The KD_DEBUGGER_ENABLED global kernel variable indicates whether kernel debugging is enabled.

Why do we need kernel mode?

In Kernel mode, the executing code has complete and unrestricted access to the underlying hardware. It can execute any CPU instruction and reference any memory address. Kernel mode is generally reserved for the lowest-level, most trusted functions of the operating system.

What is debug output?

Debug Output is an OpenGL feature that makes debugging and optimizing OpenGL applications easier. It also provides a mechanism for an application to insert its own debugging messages into the stream and to annotate GL objects with human-readable names. The KHR_debug extension defines the core feature.

Why do I get debug log?

Debug logs are system-generated logs that are sent to your Dashboard along with every new conversation. They only appear if your developers have configured them in the SDK for a given game/app version. In cases like crashes, developers can use these logs to debug what went wrong and when.

How do I use Windows debugging mode?

Step 1: Open PC settings.

1. Step 2: Choose Update and recovery.
2. Step 3: Select Recovery and tap Restart now under Advanced startup.
3. Step 4: Choose Troubleshoot to continue.
4. Step 5: Open Advanced options.
5. Step 6: Enter Startup Settings.
6. Step 7: Click Restart.
7. Step 8: Press 1 or F1 to select Enable debugging.

How do I enable debugging mode?

On the device, go to Settings > About . Tap the Build number seven times to make Settings > Developer options available. Then enable the USB Debugging option.

How to control the user-mode debugger from the kernel?

Combining This Method with Remote Debugging describes how to control the user-mode debugger from a kernel debugger, and use it as a debugging server at the same time. This combination can be useful if your user-mode symbols are located on a symbol server.

When to use user mode or kernel mode?

In the above image, the user process executes in the user mode until it gets a system call. Then a system trap is generated and the mode bit is set to zero. The system call gets executed in kernel mode. After the execution is completed, again a system trap is generated and the mode bit is set to 1.

When to use switching modes in a debugger?

Starting the Debugging Session describes how to begin a session where the user-mode debugger is controlled from the kernel debugger. Switching Modes describes the four different modes that are involved, and how to alternate between them. When to Use This Technique describes scenarios where this technique is particularly useful.

Can you use WinDbg as a kernel debugger?

You can use either KD or WinDbg as the kernel debugger. Note that many of the familiar features of WinDbg are not available in this scenario. For example, you cannot use the Locals window, the Disassembly window, or the Call Stack window, and you cannot step through source code.