If I did the following in an infinite loop, would the host system/user
account soon run out of file descriptors? (I'm thinking no, since I'd
imagine that a file object has a __del__-like method that will call
close() automatically since it goes out of scope):
open('/home/rutt/.bashrc,'r').read()
Can anyone confirm that I'm right in seeing (1) the file object's
actual destructor is below and seems to call a close method if not
already done (at the <-- indicated lines) and (2) the method table
that makes this method the destructor? Both are in
Objects/fileobject.c in python sources.
(1)
static void
file_dealloc(PyFileObject *f)
{
if (f->f_fp != NULL && f->f_close != NULL) { <----
Py_BEGIN_ALLOW_THREADS
(*f->f_close)(f->f_fp); <----
Py_END_ALLOW_THREADS
}
Py_XDECREF(f->f_name);
Py_XDECREF(f->f_mode);
Py_XDECREF(f->f_encoding);
drop_readahead(f);
f->ob_type->tp_free((PyObject *)f);
}
(2)
PyTypeObject PyFile_Type = {
PyObject_HEAD_INIT(&PyType_Type)
0,
"file",
sizeof(PyFileObject),
0,
(destructor)file_dealloc, /* tp_dealloc */ <----
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
(reprfunc)file_repr, /* tp_repr */
0, /* tp_as_number */
[...]
Thanks,
--
Benjamin Rutt
--
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