mirror of
https://github.com/aristocratos/btop.git
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115 lines
4.2 KiB
C++
115 lines
4.2 KiB
C++
/* Copyright 2021 Aristocratos (jakob@qvantnet.com)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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indent = tab
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tab-size = 4
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*/
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#include <Availability.h>
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#if __MAC_OS_X_VERSION_MIN_REQUIRED > 101504
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#include "sensors.hpp"
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#include <CoreFoundation/CoreFoundation.h>
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#include <IOKit/hidsystem/IOHIDEventSystemClient.h>
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#include <string>
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#include <numeric>
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#include <vector>
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extern "C" {
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typedef struct __IOHIDEvent *IOHIDEventRef;
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typedef struct __IOHIDServiceClient *IOHIDServiceClientRef;
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#ifdef __LP64__
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typedef double IOHIDFloat;
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#else
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typedef float IOHIDFloat;
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#endif
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#define IOHIDEventFieldBase(type) (type << 16)
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#define kIOHIDEventTypeTemperature 15
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IOHIDEventSystemClientRef IOHIDEventSystemClientCreate(CFAllocatorRef allocator);
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int IOHIDEventSystemClientSetMatching(IOHIDEventSystemClientRef client, CFDictionaryRef match);
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int IOHIDEventSystemClientSetMatchingMultiple(IOHIDEventSystemClientRef client, CFArrayRef match);
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IOHIDEventRef IOHIDServiceClientCopyEvent(IOHIDServiceClientRef, int64_t, int32_t, int64_t);
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CFStringRef IOHIDServiceClientCopyProperty(IOHIDServiceClientRef service, CFStringRef property);
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IOHIDFloat IOHIDEventGetFloatValue(IOHIDEventRef event, int32_t field);
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// create a dict ref, like for temperature sensor {"PrimaryUsagePage":0xff00, "PrimaryUsage":0x5}
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CFDictionaryRef matching(int page, int usage) {
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CFNumberRef nums[2];
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CFStringRef keys[2];
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keys[0] = CFStringCreateWithCString(0, "PrimaryUsagePage", 0);
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keys[1] = CFStringCreateWithCString(0, "PrimaryUsage", 0);
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nums[0] = CFNumberCreate(0, kCFNumberSInt32Type, &page);
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nums[1] = CFNumberCreate(0, kCFNumberSInt32Type, &usage);
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CFDictionaryRef dict = CFDictionaryCreate(0, (const void **)keys, (const void **)nums, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
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CFRelease(keys[0]);
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CFRelease(keys[1]);
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return dict;
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}
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double getValue(IOHIDServiceClientRef sc) {
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IOHIDEventRef event = IOHIDServiceClientCopyEvent(sc, kIOHIDEventTypeTemperature, 0, 0); // here we use ...CopyEvent
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IOHIDFloat temp = 0.0;
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if (event != 0) {
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temp = IOHIDEventGetFloatValue(event, IOHIDEventFieldBase(kIOHIDEventTypeTemperature));
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CFRelease(event);
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}
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return temp;
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}
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} // extern C
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long long Cpu::ThermalSensors::getSensors() {
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CFDictionaryRef thermalSensors = matching(0xff00, 5); // 65280_10 = FF00_16
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// thermalSensors's PrimaryUsagePage should be 0xff00 for M1 chip, instead of 0xff05
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// can be checked by ioreg -lfx
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IOHIDEventSystemClientRef system = IOHIDEventSystemClientCreate(kCFAllocatorDefault);
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IOHIDEventSystemClientSetMatching(system, thermalSensors);
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CFArrayRef matchingsrvs = IOHIDEventSystemClientCopyServices(system);
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std::vector<double> temps;
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if (matchingsrvs) {
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long count = CFArrayGetCount(matchingsrvs);
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for (int i = 0; i < count; i++) {
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IOHIDServiceClientRef sc = (IOHIDServiceClientRef)CFArrayGetValueAtIndex(matchingsrvs, i);
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if (sc) {
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CFStringRef name = IOHIDServiceClientCopyProperty(sc, CFSTR("Product")); // here we use ...CopyProperty
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if (name) {
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char buf[200];
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CFStringGetCString(name, buf, 200, kCFStringEncodingASCII);
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std::string n(buf);
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// this is just a guess, nobody knows which sensors mean what
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// on my system PMU tdie 3 and 9 are missing...
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// there is also PMU tdev1-8 but it has negative values??
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// there is also eACC for efficiency package but it only has 2 entries
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// and pACC for performance but it has 7 entries (2 - 9) WTF
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if (n.starts_with("eACC") or n.starts_with("pACC")) {
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temps.push_back(getValue(sc));
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}
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CFRelease(name);
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}
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}
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}
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CFRelease(matchingsrvs);
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}
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CFRelease(system);
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CFRelease(thermalSensors);
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if (temps.empty()) return 0ll;
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return round(std::accumulate(temps.begin(), temps.end(), 0ll) / temps.size());
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}
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#endif
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