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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.
*/
// Sensors related functions. Original code was refactored and moved
// from psutil/_psutil_osx.c in 2023. This is the GIT blame before the move:
// https://github.com/giampaolo/psutil/blame/efd7ed3/psutil/_psutil_osx.c
// Original battery code:
// https://github.com/giampaolo/psutil/commit/e0df5da
#include <Python.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/ps/IOPowerSources.h>
#include <IOKit/ps/IOPSKeys.h>
#include "../../_psutil_common.h"
PyObject *
psutil_sensors_battery(PyObject *self, PyObject *args) {
PyObject *py_tuple = NULL;
CFTypeRef power_info = NULL;
CFArrayRef power_sources_list = NULL;
CFDictionaryRef power_sources_information = NULL;
CFNumberRef capacity_ref = NULL;
CFNumberRef time_to_empty_ref = NULL;
CFStringRef ps_state_ref = NULL;
uint32_t capacity; /* units are percent */
int time_to_empty; /* units are minutes */
int is_power_plugged;
power_info = IOPSCopyPowerSourcesInfo();
if (!power_info) {
PyErr_SetString(PyExc_RuntimeError,
"IOPSCopyPowerSourcesInfo() syscall failed");
goto error;
}
power_sources_list = IOPSCopyPowerSourcesList(power_info);
if (!power_sources_list) {
PyErr_SetString(PyExc_RuntimeError,
"IOPSCopyPowerSourcesList() syscall failed");
goto error;
}
/* Should only get one source. But in practice, check for > 0 sources */
if (!CFArrayGetCount(power_sources_list)) {
PyErr_SetString(PyExc_NotImplementedError, "no battery");
goto error;
}
power_sources_information = IOPSGetPowerSourceDescription(
power_info, CFArrayGetValueAtIndex(power_sources_list, 0));
capacity_ref = (CFNumberRef) CFDictionaryGetValue(
power_sources_information, CFSTR(kIOPSCurrentCapacityKey));
if (!CFNumberGetValue(capacity_ref, kCFNumberSInt32Type, &capacity)) {
PyErr_SetString(PyExc_RuntimeError,
"No battery capacity information in power sources info");
goto error;
}
ps_state_ref = (CFStringRef) CFDictionaryGetValue(
power_sources_information, CFSTR(kIOPSPowerSourceStateKey));
is_power_plugged = CFStringCompare(
ps_state_ref, CFSTR(kIOPSACPowerValue), 0)
== kCFCompareEqualTo;
time_to_empty_ref = (CFNumberRef) CFDictionaryGetValue(
power_sources_information, CFSTR(kIOPSTimeToEmptyKey));
if (!CFNumberGetValue(time_to_empty_ref,
kCFNumberIntType, &time_to_empty)) {
/* This value is recommended for non-Apple power sources, so it's not
* an error if it doesn't exist. We'll return -1 for "unknown" */
/* A value of -1 indicates "Still Calculating the Time" also for
* apple power source */
time_to_empty = -1;
}
py_tuple = Py_BuildValue("Iii",
capacity, time_to_empty, is_power_plugged);
if (!py_tuple) {
goto error;
}
CFRelease(power_info);
CFRelease(power_sources_list);
/* Caller should NOT release power_sources_information */
return py_tuple;
error:
if (power_info)
CFRelease(power_info);
if (power_sources_list)
CFRelease(power_sources_list);
Py_XDECREF(py_tuple);
return NULL;
}
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