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2.12.11 Special Topic: Running External Programs under a Debugger
MathLink allows you to run external programs under whatever debugger is provided in your software environment.
MathLink-compatible programs are typically set up to take arguments, usually on the command line, which specify what MathLink connections they should use.
Running an external program under a debugger.
Note that in order to get a version of an external program that can be run under a debugger, you may need to specify -g or other flags when you compile the program.
Set a breakpoint in the C function f.
(debug) break f
Breakpoint
set:
f:
line
1
Start the external program.
(debug) run -linkcreate
The program responds with what port it is listening on.
Link
created
on:
2981@frog.wolfram.com
This connects to the program running under the debugger.
Out[1]= Install[LinkConnect["2981@frog.wolfram.com"]] LinkObject[2981@frog.wolfram.com,
1]
This calls a function which executes code in the external program.
In[2]:= f[16]
The external program stops at the breakpoint.
(debug) Breakpoint:
f(16)
This tells the debugger to continue.
(debug) continue
Now f returns.
Out[2]= 561243
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