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/*
* Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/*
System-wide CPU related functions.
Original code was refactored and moved from psutil/_psutil_osx.c in 2020
right before a4c0a0eb0d2a872ab7a45e47fcf37ef1fde5b012.
For reference, here's the git history with original implementations:
- CPU count logical: 3d291d425b856077e65163e43244050fb188def1
- CPU count physical: 4263e354bb4984334bc44adf5dd2f32013d69fba
- CPU times: 32488bdf54aed0f8cef90d639c1667ffaa3c31c7
- CPU stat: fa00dfb961ef63426c7818899340866ced8d2418
- CPU frequency: 6ba1ac4ebfcd8c95fca324b15606ab0ec1412d39
*/
#include <Python.h>
#include <mach/mach_error.h>
#include <mach/mach_host.h>
#include <mach/mach_port.h>
#include <mach/mach_vm.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
#include <mach/mach.h>
#include "../../_psutil_common.h"
#include "../../_psutil_posix.h"
PyObject *
psutil_cpu_count_logical(PyObject *self, PyObject *args) {
int num;
size_t size = sizeof(int);
if (sysctlbyname("hw.logicalcpu", &num, &size, NULL, 2))
Py_RETURN_NONE; // mimic os.cpu_count()
else
return Py_BuildValue("i", num);
}
PyObject *
psutil_cpu_count_cores(PyObject *self, PyObject *args) {
int num;
size_t size = sizeof(int);
if (sysctlbyname("hw.physicalcpu", &num, &size, NULL, 0))
Py_RETURN_NONE; // mimic os.cpu_count()
else
return Py_BuildValue("i", num);
}
PyObject *
psutil_cpu_times(PyObject *self, PyObject *args) {
mach_msg_type_number_t count = HOST_CPU_LOAD_INFO_COUNT;
kern_return_t error;
host_cpu_load_info_data_t r_load;
mach_port_t host_port = mach_host_self();
error = host_statistics(host_port, HOST_CPU_LOAD_INFO,
(host_info_t)&r_load, &count);
if (error != KERN_SUCCESS) {
return PyErr_Format(
PyExc_RuntimeError,
"host_statistics(HOST_CPU_LOAD_INFO) syscall failed: %s",
mach_error_string(error));
}
mach_port_deallocate(mach_task_self(), host_port);
return Py_BuildValue(
"(dddd)",
(double)r_load.cpu_ticks[CPU_STATE_USER] / CLK_TCK,
(double)r_load.cpu_ticks[CPU_STATE_NICE] / CLK_TCK,
(double)r_load.cpu_ticks[CPU_STATE_SYSTEM] / CLK_TCK,
(double)r_load.cpu_ticks[CPU_STATE_IDLE] / CLK_TCK
);
}
PyObject *
psutil_cpu_stats(PyObject *self, PyObject *args) {
struct vmmeter vmstat;
kern_return_t ret;
mach_msg_type_number_t count = sizeof(vmstat) / sizeof(integer_t);
mach_port_t mport = mach_host_self();
ret = host_statistics(mport, HOST_VM_INFO, (host_info_t)&vmstat, &count);
if (ret != KERN_SUCCESS) {
PyErr_Format(
PyExc_RuntimeError,
"host_statistics(HOST_VM_INFO) failed: %s",
mach_error_string(ret));
return NULL;
}
mach_port_deallocate(mach_task_self(), mport);
return Py_BuildValue(
"IIIII",
vmstat.v_swtch, // ctx switches
vmstat.v_intr, // interrupts
vmstat.v_soft, // software interrupts
vmstat.v_syscall, // syscalls
vmstat.v_trap // traps
);
}
PyObject *
psutil_cpu_freq(PyObject *self, PyObject *args) {
unsigned int curr;
int64_t min = 0;
int64_t max = 0;
int mib[2];
size_t len = sizeof(curr);
size_t size = sizeof(min);
// also available as "hw.cpufrequency" but it's deprecated
mib[0] = CTL_HW;
mib[1] = HW_CPU_FREQ;
if (sysctl(mib, 2, &curr, &len, NULL, 0) < 0)
return PyErr_SetFromOSErrnoWithSyscall("sysctl(HW_CPU_FREQ)");
if (sysctlbyname("hw.cpufrequency_min", &min, &size, NULL, 0))
psutil_debug("sysctl('hw.cpufrequency_min') failed (set to 0)");
if (sysctlbyname("hw.cpufrequency_max", &max, &size, NULL, 0))
psutil_debug("sysctl('hw.cpufrequency_min') failed (set to 0)");
return Py_BuildValue(
"IKK",
curr / 1000 / 1000,
min / 1000 / 1000,
max / 1000 / 1000);
}
PyObject *
psutil_per_cpu_times(PyObject *self, PyObject *args) {
natural_t cpu_count;
natural_t i;
processor_info_array_t info_array;
mach_msg_type_number_t info_count;
kern_return_t error;
processor_cpu_load_info_data_t *cpu_load_info = NULL;
int ret;
PyObject *py_retlist = PyList_New(0);
PyObject *py_cputime = NULL;
if (py_retlist == NULL)
return NULL;
mach_port_t host_port = mach_host_self();
error = host_processor_info(host_port, PROCESSOR_CPU_LOAD_INFO,
&cpu_count, &info_array, &info_count);
if (error != KERN_SUCCESS) {
PyErr_Format(
PyExc_RuntimeError,
"host_processor_info(PROCESSOR_CPU_LOAD_INFO) syscall failed: %s",
mach_error_string(error));
goto error;
}
mach_port_deallocate(mach_task_self(), host_port);
cpu_load_info = (processor_cpu_load_info_data_t *) info_array;
for (i = 0; i < cpu_count; i++) {
py_cputime = Py_BuildValue(
"(dddd)",
(double)cpu_load_info[i].cpu_ticks[CPU_STATE_USER] / CLK_TCK,
(double)cpu_load_info[i].cpu_ticks[CPU_STATE_NICE] / CLK_TCK,
(double)cpu_load_info[i].cpu_ticks[CPU_STATE_SYSTEM] / CLK_TCK,
(double)cpu_load_info[i].cpu_ticks[CPU_STATE_IDLE] / CLK_TCK
);
if (!py_cputime)
goto error;
if (PyList_Append(py_retlist, py_cputime))
goto error;
Py_CLEAR(py_cputime);
}
ret = vm_deallocate(mach_task_self(), (vm_address_t)info_array,
info_count * sizeof(int));
if (ret != KERN_SUCCESS)
PyErr_WarnEx(PyExc_RuntimeWarning, "vm_deallocate() failed", 2);
return py_retlist;
error:
Py_XDECREF(py_cputime);
Py_DECREF(py_retlist);
if (cpu_load_info != NULL) {
ret = vm_deallocate(mach_task_self(), (vm_address_t)info_array,
info_count * sizeof(int));
if (ret != KERN_SUCCESS)
PyErr_WarnEx(PyExc_RuntimeWarning, "vm_deallocate() failed", 2);
}
return NULL;
}
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