On Fri, Aug 12, 2016 at 11:59:00PM -0700, Andi Vajda wrote:
> >
> > and it still crashes. Playing with -Xmx -Xms, -Xss doesn't help at all.
> >
> > Any suggestions about cause of this and possible solution?
>
> No one replied to your question so far. I don't have much to add since I
> have no access to your platform and can't reproduce any of this to debug it.
> It looks like the symptoms you describe could hint at a version mismatch
> between the headers you use to compile (and the libs to link) and then the
> ones you use at runtime. Maybe version skew or 32-bit vs 64-bit (?) or
> different frameworks.
> Sorry for not having anything more useful to say.
>
> Andi..
Well. I'm pretty sure that this is not header/version mismatch. Because it
happens in isolated environment with only one JDK installed.
I've replaced jcc.__main__ entry point with wrapper that creates child
process and passes args to it via stdin instead of sys.argv and it works.
I was able to build pylucene with such wrapper and it passes all tests. So
I'm pretty sure that it's not header/binary mismatch. Because in such code
should crash somewhere else.
>From my point of view it's stack size limit or something like this.
In any case thanks for you reply. I've working workaround. I know that
pylucene currently lacks development effort, so this probably will not be
fixed.
In any case if you have time and want to take a look, I can prepare qemu VM
that reproduces it.
Code that I've used:
# Usage: replace jcc calls with wrapper call:
#
# Before:
# python2.7 -m jcc.__main__ --jar file1.jar ... --build
#
# After:
# debian/jcc_wrapper python2.7 -m jcc.__main__ --jar file1.jar ... --build
#
# jcc_wrapper will read all arguments from sys.argv, invoke itself with --stdin
arg and
# pass parameters to JCC without touching of sys.argv
import os
import sys
import subprocess
if len(sys.argv) > 1 and sys.argv[1] == '--stdin':
# Child process. Read options and call jcc
args = sys.stdin.read().split('\n')
# Get rid of -m jcc.__main__ (expected to be first two args)
if len(args) > 2 and args[1] == '-m':
del args[1:3]
# python -m jcc fills sys.argv[0] with path to module. Emulate this
import jcc
args[0] = os.path.join(jcc.__path__[0], '__main__.py')
from jcc import cpp
cpp.jcc(args)
else:
# parent process. Read opts, and pass them to child
# expected args: jcc_wrapper python2.7 -m jcc.__main__ ...
proc = subprocess.Popen([sys.argv[1], sys.argv[0], '--stdin'],
stdin=subprocess.PIPE)
proc.stdin.write('\n'.join(sys.argv[1:]))
proc.stdin.close()
sys.exit(proc.wait())
--
WBR, Dmitry
