&lt;pre&gt;
$ gdb --pid=26426
(gdb) gcore
Saved corefile core.26426
(gdb) detach
&lt;/pre&gt;

Or run `gcore $(pidof processname)`.

This has the benefit (over running gdb and issuing commands to the CLI) that you attach and detach in the shortest possible time. 

You can used `generate-core-file` command in gdb to generate core dump of running process.

I&#39;m doing simple string input parsing and I am in need of a string tokenizer. I am new to C# but have programmed Java, and it seems natural that C# should have a string tokenizer. Does it? Where is it? How do I use it?

Does C# have a String Tokenizer like Java&#39;s?

What is a recommended architecture for providing storage for a dynamic logical database schema?

To clarify: Where a system is required to provide storage for a model whose schema may be extended or altered by its users once in production, what are some good technologies, database models or storage engines that will allow this? 

A few possibilities to illustrate:

* Creating/altering database objects via dynamically generated DML
* Creating tables with large numbers of sparse physical columns and using only those required for the &#39;overlaid&#39; logical schema
* Creating a &#39;long, narrow&#39; table that stores dynamic column values as rows that then need to be pivoted to create a &#39;short, wide&#39; rowset containing all the values for a specific entity
* Using a BigTable/SimpleDB PropertyBag type system

Any answers based on real world experience would be greatly appreciated

Dynamic Database Schema

Is it possible to get gdb or use some other tools to create a core dump of a running process and it&#39;s symbol table?  It would be great if there&#39;s a way to do this without terminating the process.  

If this is possible, what commands would you use?  (I&#39;m trying to do this on a Linux box)

Is it possible to get a core dump of a running process and its symbol table?

<p>Is it possible to get gdb or use some other tools to create a core dump of a running process and it's symbol table?  It would be great if there's a way to do this without terminating the process.</p>
<p>If this is possible, what commands would you use?  (I'm trying to do this on a Linux box)</p>


The &lt;a href=&quot;http://win32.perl.org/&quot;&gt;win32.perl.org&lt;/a&gt; web site provides references to several Perl distributions for MS Windows.

For a long time I have been using ActivePerl from 
&lt;a href=&quot;http://www.activestate.com/&quot;&gt;ActiveState&lt;/a&gt; but recently I switched to 
&lt;a href=&quot;http://strawberryperl.com/&quot;&gt;Strawberry Perl&lt;/a&gt;.

IMHO The only advantage that Active Perl still has over Strawberry Perl is the fact that it comes with Perl Tk which means its easy to install 
&lt;a href=&quot;http://search.cpan.org/dist/Devel-ptkdb/&quot;&gt;Devel::ptkdb&lt;/a&gt; the graphical debugger. Other than that, I think Strawberry Perl has all the advantages.



Which version of Perl should I use on Windows?

If you have a statically allocated array, the Visual Studio debugger can easily display all of the array elements.  However, if you have an array allocated dynamically and pointed to by a pointer, it will only display the first element of the array when you click the + to expand it.  Is there an easy way to tell the debugger, show me this data as an array of type Foo and size X?

How to display a dynamically allocated array in the Visual Studio debugger?

Briefly: Does anyone know of a GUI for gdb that brings it on par or close to the feature set you get in the more recent version of Visual C++?

In detail:  As someone who has spent a lot of time programming in Windows, one of the larger stumbling blocks I&#39;ve found whenever I have to code C++ in Linux is that debugging anything using commandline gdb takes me several times longer than it does in Visual Studio, and it does not seem to be getting better with practice.  Some things are just easier or faster to express graphically.

Specifically, I&#39;m looking for a GUI that:

  - Handles all the basics like stepping over &amp; into code, watch variables and breakpoints
  - Understands and can display the contents of complex &amp; nested C++ data types
  - Doesn&#39;t get confused by and preferably can intelligently step through templated code and data structures while displaying relevant information such as the parameter types
  - Can handle threaded applications and switch between different threads to step through or view the state of
  - Can handle attaching to an already-started process or reading a core dump, in addition to starting the program up in gdb

If such a program does not exist, then I&#39;d like to hear about experiences people have had with programs that meet at least some of the bullet points.
Does anyone have any recommendations?

**Edit:**&lt;br&gt;
Listing out the possibilities is great, and I&#39;ll take what I can get, but it would be even more helpful if you could include in your responses:&lt;br&gt;
(a) Whether or not you&#39;ve actually used this GUI and if so, what positive/negative feedback you have about it.&lt;br&gt;
(b) If you know, which of the above-mentioned features are/aren&#39;t supported

Lists are easy to come by, sites like this are great because you can get an idea of people&#39;s personal experiences with applications.

Is there a C++ gdb GUI for Linux?

I teach a sort of &quot;lite&quot; C++ programming course to novices (&quot;lite&quot; meaning no pointers, no classes, just plain old C, plus references and STL string and vectors). Students have no previous experience in programming, so I believe that using an interactive debugger would help them understand program flow, variables, and recursion.

The course is taught in Linux. Teaching them to use gdb is just overkill (they will not use nor understand most features). I just need something simple but easy to use: to see at which line the program is now, what is in the stack (local variables, previous calls, etc.). I look something similar to old Turbo Pascal or Turbo C++ Borland&#39;s debugger, or Visual Studio debugger.

Thank you,

Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming?

When writing C/C++ code, in order to debug the binary executable the debug option must be enabled on the compiler/linker.  In the case of GCC, the option is -g.  When the debug option is enabled, how does the affect the binary executable?  What additional data is stored in the file that allows the debugger function as it does?

How Does The Debugging Option -g Change the Binary Executable?

My production system occasionally exhibits a memory leak I have not been able to reproduce in a development environment.  I&#39;ve used a &lt;a href=&quot;https://stackoverflow.com/questions/110259/python-memory-profiler&quot;&gt;Python memory profiler&lt;/a&gt; (specifically, Heapy) with some success in the development environment, but it can&#39;t help me with things I can&#39;t reproduce, and I&#39;m reluctant to instrument our production system with Heapy because it takes a while to do its thing and its threaded remote interface does not work well in our server.

What I think I want is a way to dump a snapshot of the production Python process (or at least gc.get_objects), and then analyze it offline to see where it is using memory.  &lt;a href=&quot;https://stackoverflow.com/questions/141802/how-do-i-dump-an-entire-python-process-for-later-debugging-inspection&quot;&gt;How do I get a core dump of a python process like this?&lt;/a&gt;  Once I have one, how do I do something useful with it?

How do I find what is using memory in a Python process in a production system?

I would like to force a core dump at a specific location in my C++ application.

I know I can do it by doing something like:

    int * crash = NULL;
    *crash = 1;

But I would like to know if there is a cleaner way?

I am using Linux by the way.



How to programmatically cause a core dump in C/C++

What is `SEGV_MAPERR`, why does it always come up with `SIGSEGV`?

What is SEGV_MAPERR?

While running a C program, It says *&quot;(core dumped)&quot;* but I can&#39;t see any files under the current path.

I have set and verified the `ulimit`:

    ulimit -c unlimited 
    ulimit -a 

I also tried to find a file named &quot;core&quot;, but didn&#39;t get the core dumped file?  
Any help, where is my core file?


Core dumped, but core file is not in the current directory?

On Mac OS X, if I send SIGQUIT to my C program, it terminates, but there is no core dump file.

Do you have to manually enable core dumps on Mac OS X (how?), or are they written to somewhere else instead of the working directory?

Content Type	Original Author	Original Content on Stackoverflow
Question	readonly	View Question on Stackoverflow
Solution 1 - Debugging	DustinB	View Answer on Stackoverflow
Solution 2 - Debugging	Alex Zeffertt	View Answer on Stackoverflow
Solution 3 - Debugging	Satish	View Answer on Stackoverflow

Is it possible to get a core dump of a running process and its symbol table?

Debugging Problem Overview

Debugging Solutions

Solution 1 - Debugging

Solution 2 - Debugging

Solution 3 - Debugging

Dynamic Database Schema

Does C# have a String Tokenizer like Java's?

Attributions