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Issue #15487: Add a __sizeof__ implementation for buffered I/O objects.

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Patch by Serhiy Storchaka.
This commit is contained in:
Antoine Pitrou 2012-07-29 19:04:57 +02:00
commit a264384fe6
3 changed files with 34 additions and 3 deletions
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14
Modules/_io/bufferedio.c
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@ -398,6 +398,17 @@ buffered_dealloc(buffered *self)
Py_TYPE(self)->tp_free((PyObject *)self);
}
static PyObject *
buffered_sizeof(buffered *self, void *unused)
{
Py_ssize_t res;
res = sizeof(buffered);
if (self->buffer)
res += self->buffer_size;
return PyLong_FromSsize_t(res);
}
static int
buffered_traverse(buffered *self, visitproc visit, void *arg)
{
@ -1699,6 +1710,7 @@ static PyMethodDef bufferedreader_methods[] = {
{"seek", (PyCFunction)buffered_seek, METH_VARARGS},
{"tell", (PyCFunction)buffered_tell, METH_NOARGS},
{"truncate", (PyCFunction)buffered_truncate, METH_VARARGS},
{"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS},
{NULL, NULL}
};
@ -2079,6 +2091,7 @@ static PyMethodDef bufferedwriter_methods[] = {
{"flush", (PyCFunction)buffered_flush, METH_NOARGS},
{"seek", (PyCFunction)buffered_seek, METH_VARARGS},
{"tell", (PyCFunction)buffered_tell, METH_NOARGS},
{"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS},
{NULL, NULL}
};
@ -2470,6 +2483,7 @@ static PyMethodDef bufferedrandom_methods[] = {
{"readline", (PyCFunction)buffered_readline, METH_VARARGS},
{"peek", (PyCFunction)buffered_peek, METH_VARARGS},
{"write", (PyCFunction)bufferedwriter_write, METH_VARARGS},
{"__sizeof__", (PyCFunction)buffered_sizeof, METH_NOARGS},
{NULL, NULL}
};