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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 <uvm/uvm_extern.h>
/*
CPU related functions. Original code was refactored and moved from
psutil/arch/netbsd/specific.c in 2023 (and was moved in there previously
already) from cset 84219ad. For reference, here's the git history with
original(ish) implementations:
- per CPU times: 312442ad2a5b5d0c608476c5ab3e267735c3bc59 (Jan 2016)
- CPU stats: a991494e4502e1235ebc62b5ba450287d0dedec0 (Jan 2016)
*/
PyObject *
psutil_cpu_stats(PyObject *self, PyObject *args) {
size_t size;
struct uvmexp_sysctl uv;
int uvmexp_mib[] = {CTL_VM, VM_UVMEXP2};
size = sizeof(uv);
if (sysctl(uvmexp_mib, 2, &uv, &size, NULL, 0) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
return Py_BuildValue(
"IIIIIII",
uv.swtch, // ctx switches
uv.intrs, // interrupts - XXX always 0, will be determined via /proc
uv.softs, // soft interrupts
uv.syscalls, // syscalls - XXX always 0
uv.traps, // traps
uv.faults, // faults
uv.forks // forks
);
}
PyObject *
psutil_per_cpu_times(PyObject *self, PyObject *args) {
int mib[3];
int ncpu;
size_t len;
size_t size;
int i;
PyObject *py_cputime = NULL;
PyObject *py_retlist = PyList_New(0);
if (py_retlist == NULL)
return NULL;
// retrieve the number of cpus
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
len = sizeof(ncpu);
if (sysctl(mib, 2, &ncpu, &len, NULL, 0) == -1) {
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
uint64_t cpu_time[CPUSTATES];
for (i = 0; i < ncpu; i++) {
// per-cpu info
mib[0] = CTL_KERN;
mib[1] = KERN_CP_TIME;
mib[2] = i;
size = sizeof(cpu_time);
if (sysctl(mib, 3, &cpu_time, &size, NULL, 0) == -1) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
py_cputime = Py_BuildValue(
"(ddddd)",
(double)cpu_time[CP_USER] / CLOCKS_PER_SEC,
(double)cpu_time[CP_NICE] / CLOCKS_PER_SEC,
(double)cpu_time[CP_SYS] / CLOCKS_PER_SEC,
(double)cpu_time[CP_IDLE] / CLOCKS_PER_SEC,
(double)cpu_time[CP_INTR] / CLOCKS_PER_SEC
);
if (!py_cputime)
goto error;
if (PyList_Append(py_retlist, py_cputime))
goto error;
Py_DECREF(py_cputime);
}
return py_retlist;
error:
Py_XDECREF(py_cputime);
Py_DECREF(py_retlist);
return NULL;
}
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