I need to launch an external program from my python script. This program crashes, so I need to get a core dump from it.
what can i do?
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Check out the python resource module. It will let you set the size of core files, etc., just like the ulimit command. Specifically, you want to do something like
resource.setrlimit(resource.RLIMIT_CORE, <size>)
before launching your target program.
My guess at usage (I haven't done this myself) is:
import resource
import subprocess
resource.setrlimit(resource.RLIMIT_CORE,
(resource.RLIM_INFINITY,
resource.RLIM_INFINITY))
command = 'command line to be launched'
subprocess.call(command)
# os.system(command) would work, but os.system has been deprecated
# in favor of the subprocess module
Tom Barron
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resource.setrlimit(resource.RLIMIT_CORE, resource.RLIM_INFINITY) os.system( launch_str) ? – Gioviiz Oct 20 '16 at 08:27
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Yes, try that and let me know if that doesn't solve the problem – Tom Barron Oct 20 '16 at 09:28
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Actually, setrlimit() requires a tuple for the limits argument. See the example I've added to my answer. – Tom Barron Oct 20 '16 at 09:34
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i got this error AttributeError: 'module' object has no attribute 'RLIMIT_INFINITY' – Gioviiz Oct 20 '16 at 10:10
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Oh, sorry. Looking at the reference more closely, it's RLIM_INFINITY (not RLIMIT_...). I've corrected the example. – Tom Barron Oct 20 '16 at 10:12