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Что (кто) такое source level debugger - определение
Kernel debugging; Kernel-level debugger
source-level debugger
COMPUTER PROGRAM USED TO TEST AND DEBUG OTHER PROGRAMS
Debuggers; Debugger front end; Debugging tool; Symbolic debugger; Source-level debugger; Debugger (computer); GNU Debugger front end; Omniscient Debugger; User:Unforgettableid/Omniscient Debugger; Debugger front-end; GNU Debugger front-end; Reverse debugging; Reverse debugger; Historical debugger; Historical debugging; Backwards debugger; Backwards debugging; Debugger frontend; Hardware support for debugging
<programming, tool> A debugger that shows the programmer the
line or expression in the source code that resulted in a
particular machine code instruction of a running program
loaded in memory. This helps the programmer to analyse a
program's behaviour in the high-level terms like source-level
flow control constructs, procedure calls, named
variables, etc instead of machine instructions and memory
locations. Source-level debugging also makes it possible to
step through execution a line at a time and set source-level
breakpoints.
In order to support source-level debugging, the program must
be compiled with this option enabled so that extra information
is included in the executable code to identify the
corresponding positions in the source code.
A symbolic debugger is one level lower - it displays symbols
(procedure and variable names) stored in the executable but
not individual source code lines.
GDB is a widely used example of a source-level debugger.
(2007-04-03)
Kernel debugger
A kernel debugger is a debugger present in some operating system kernels to ease debugging and kernel development by the kernel developers. A kernel debugger might be a stub implementing low-level operations, with a full-blown debugger such as GNU Debugger (gdb), running on another machine, sending commands to the stub over a serial line or a network connection, or it might provide a command line that can be used directly on the machine being debugged.
Spirit level
 1973 (2149089991).jpg?width=200 "Measuring elevation with a line level. Historical archaeology at the old Champoeg townsite, Champoeg, Oregon (USA) 1973 (2149089991)")
![bull's eye spirit level]] mounted in a camera tripod](https://commons.wikimedia.org/wiki/Special:FilePath/Spirit Level 5E5W0843.jpg?width=200 "bull's eye spirit level]] mounted in a camera tripod")
INSTRUMENT WITH A SEALED TUBE OF LIQUID, DESIGNED TO INDICATE WHETHER A SURFACE IS HORIZONTAL (LEVEL) OR VERTICAL (PLUMB)
Waterlevel; Spirit-level; Bubble level; Torpedo level; Tube level; Level (tool); Spirit Level; Carpenter's level
A spirit level, bubble level, or simply a level, is an instrument designed to indicate whether a surface is horizontal (level) or vertical (plumb). Different types of spirit levels may be used by carpenters, stonemasons, bricklayers, other building trades workers, surveyors, millwrights and other metalworkers, and in some photographic or videographic work.
Википедия
Kernel debugger
A kernel debugger is a debugger present in some operating system kernels to ease debugging and kernel development by the kernel developers. A kernel debugger might be a stub implementing low-level operations, with a full-blown debugger such as GNU Debugger (gdb), running on another machine, sending commands to the stub over a serial line or a network connection, or it might provide a command line that can be used directly on the machine being debugged.
Operating systems and operating system kernels that contain a kernel debugger:
- The Windows NT family includes a kernel debugger named KD, which can act as a local debugger with limited capabilities (reading and writing kernel memory, and setting breakpoints) and can attach to a remote machine over a serial line, IEEE 1394 connection, USB 2.0 or USB 3.0 connection. The WinDbg GUI debugger can also be used to debug kernels on local and remote machines.
- BeOS and Haiku include a kernel debugger usable with either an on-screen console or over a serial line. It features various commands to inspect memory, threads, and other kernel structures.
- DragonFly BSD
- Linux kernel; No kernel debugger was included in the mainline Linux tree prior to version 2.6.26-rc1 because Linus Torvalds didn't want a kernel debugger in the kernel.
- KDB (local)
- KGDB (remote)
- MDB (local/remote)
- NetBSD (DDB for local, KGDB for remote)
- macOS - ddb for local, kdp for remote
- OpenBSD includes ddb which has a syntax is similar to GNU Debugger.
