Hi and thank you for PyD !I'm experiencing problem...

2007-07-23T09:25:00.000-07:00

Hi and thank you for PyD !

I'm experiencing problems whith the garbage collector when I try to use PyD
under Linux with the GDC compiler
gdc (GCC) 4.1.1 20060524 ( (gdc 0.22, using dmd 1.004)).

I obtained the simplest example by modifying the rawexample of the pyd source. Here is the D code:

// A module written to the raw Python/C API.

module rawexample;
import python;
import std.gc;

extern(C)
PyObject* myCollect(PyObject* self, PyObject* args) {
fullCollect();
Py_INCREF(Py_None);
return Py_None;
}

PyMethodDef[] rawexample_methods = [
{"myCollect", &myCollect, METH_VARARGS, ""},
{null, null, 0, null}
];

extern(C)
export void initrawexample() {
PyObject* m = Py_InitModule("rawexample", rawexample_methods.ptr);
}

So I define a single function myCollect which only calls fullCollect(). I compile this into a shared library, using the following setup file:

from celerid.support import setup, Extension

projName = 'rawexample'

setup(
name=projName,
version='0.1',
ext_modules=[
Extension(projName, ['rawexample.d', ],
extra_compile_args = [
],
raw_only=True)
],
)

then I run the following test.py file

import os.path, sys
import distutils.util

# Append the directory in which the binaries were placed to Python's sys.path,
# then import the D DLL.
libDir = os.path.join('build', 'lib.%s-%s' % (
distutils.util.get_platform(),
'.'.join(str(v) for v in sys.version_info[:2])
))
sys.path.append(os.path.abspath(libDir))
import rawexample

rawexample.myCollect()
rawexample.myCollect()
print "test.py: done"

This results in nothing printed and a segmentation fault. If I call myCollect only once, the message "test.py: done" is printed but then there is still a segmentation fault.

Note that I designed this example after some mysterious crashes of a larger program which didn't call directely "fullCollect", but I suspected the gc because the program failed only after a large number of iterations...

If you have an idea about how to fix this, please let me know !

EricR

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Hi and thank you for PyD !I'm experiencing problem...