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/*
* Copyright (c) 2009, Giampaolo Rodola', Landry Breuil.
* All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <Python.h>
#include <sys/sysctl.h>
#include <sys/disk.h>
PyObject *
psutil_disk_io_counters(PyObject *self, PyObject *args) {
int i, dk_ndrive, mib[3];
size_t len;
struct diskstats *stats = NULL;
PyObject *py_retdict = PyDict_New();
PyObject *py_disk_info = NULL;
if (py_retdict == NULL)
return NULL;
mib[0] = CTL_HW;
mib[1] = HW_DISKSTATS;
len = 0;
if (sysctl(mib, 2, NULL, &len, NULL, 0) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
dk_ndrive = (int)(len / sizeof(struct diskstats));
stats = malloc(len);
if (stats == NULL) {
PyErr_NoMemory();
goto error;
}
if (sysctl(mib, 2, stats, &len, NULL, 0) < 0 ) {
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
for (i = 0; i < dk_ndrive; i++) {
py_disk_info = Py_BuildValue(
"(KKKK)",
stats[i].ds_rxfer, // num reads
stats[i].ds_wxfer, // num writes
stats[i].ds_rbytes, // read bytes
stats[i].ds_wbytes // write bytes
);
if (!py_disk_info)
goto error;
if (PyDict_SetItemString(py_retdict, stats[i].ds_name, py_disk_info))
goto error;
Py_DECREF(py_disk_info);
}
free(stats);
return py_retdict;
error:
Py_XDECREF(py_disk_info);
Py_DECREF(py_retdict);
if (stats != NULL)
free(stats);
return NULL;
}
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