CODEWITHSUNDEEP
perldebugging
Chinaxing
Chinaxing

Reputation: 8874

perl debug improvement

I often need to debug in my Perl program, some of them are very big, and are not started by perl xxx.pl.

I have use Python's pdb module, which can set a breakpoint in program by using 

pdb.set_trace()

When execute to the point, program will give out a python interactive shell. Then I can debug. I want to know that is there a such debug module or method in Perl? I also want to know other debug support in perl and its modules.

Upvotes: 5

Views: 645

Answers (3)

Chinaxing
Chinaxing

Reputation: 8874

I found the Module : Enbugger -- Enables the debugger at runtime.

which is what was i wanted.

CLASS->stop

which can stop the running of program and give out a debug shell .

it also can load many type of debugger, by default , it is perl5db. you can specify other debugger such as this powerful one debugger: Devel::Trepan

Upvotes: 1

daxim
daxim

Reputation: 39158

The equivalent is $DB::single = 1.

Upvotes: 2

user1126070
user1126070

Reputation: 5069

Here is a good tutorial for debugging Perl script:

http://www.ehow.com/how_2095026_debug-perl-programs.html

perl -d yourscript.pl

Set breakpoints using the "b" command in sections of the code you think are broken. Breakpoints tell the debugger to stop debugging when it reaches that line or function. They can be set on lines or functions and can have conditions attached. For example, to set a breakpoint on line 531 with the condition of "$a > 10", you would use the following command: "b 531 $a > 10"

Run the program, using the "r" command. This will run the program until a breakpoint is reached.

Upvotes: 1

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