From 3d3a56e0ee968f1f9fa56c7ec1ee64e215cca6a6 Mon Sep 17 00:00:00 2001
From: "Kenneth Benzie (Benie)" <benie@infektor.net>
Date: Tue, 29 Jul 2025 15:36:50 +0100
Subject: [PATCH] Reintroduce cpu-temp in system-info on macOS

---
 system-info/system-info-macOS.sh | 67 +++++++++++++++++++++++++++++++-
 1 file changed, 65 insertions(+), 2 deletions(-)

diff --git a/system-info/system-info-macOS.sh b/system-info/system-info-macOS.sh
index 48f24b5..4737207 100755
--- a/system-info/system-info-macOS.sh
+++ b/system-info/system-info-macOS.sh
@@ -8,6 +8,69 @@ if [ ! -d $cache_dir ]; then
   mkdir -p $cache_dir
 fi
 
+if [ ! -f $cache_dir/cpu-temp ]; then
+  clang -x objective-c -Wall -O2 -g -c -o $cache_dir/cpu-temp.o - << EOF
+#import <Foundation/Foundation.h>
+#import <IOKit/hidsystem/IOHIDEventSystemClient.h>
+#include <unistd.h>
+
+#define IOHIDEventFieldBase(type) (type << 16)
+#define kIOHIDEventTypeTemperature 15
+
+typedef struct __IOHIDEvent *IOHIDEventRef;
+typedef struct __IOHIDServiceClient *IOHIDServiceClientRef;
+typedef double IOHIDFloat;
+
+IOHIDEventSystemClientRef
+IOHIDEventSystemClientCreate(CFAllocatorRef allocator);
+int IOHIDEventSystemClientSetMatching(IOHIDEventSystemClientRef client,
+                                      CFDictionaryRef match);
+IOHIDEventRef IOHIDServiceClientCopyEvent(IOHIDServiceClientRef, int64_t,
+                                          int32_t, int64_t);
+CFStringRef IOHIDServiceClientCopyProperty(IOHIDServiceClientRef service,
+                                           CFStringRef property);
+IOHIDFloat IOHIDEventGetFloatValue(IOHIDEventRef event, int32_t field);
+
+int main(int argc, char *argv[]) {
+  NSDictionary *thermalSensors = @{
+    @"PrimaryUsagePage" : [NSNumber numberWithInt:0xFF00],
+    @"PrimaryUsage" : [NSNumber numberWithInt:5],
+  };
+  IOHIDEventSystemClientRef system =
+      IOHIDEventSystemClientCreate(kCFAllocatorDefault);
+  IOHIDEventSystemClientSetMatching(system,
+                                    (__bridge CFDictionaryRef)thermalSensors);
+  NSArray *serviceClients =
+      (__bridge NSArray *)IOHIDEventSystemClientCopyServices(system);
+
+  long count = [serviceClients count];
+  for (NSUInteger i = 0; i < count; i++) {
+    IOHIDServiceClientRef serviceClient =
+        (IOHIDServiceClientRef)serviceClients[i];
+    NSString *name = (NSString *)IOHIDServiceClientCopyProperty(
+        serviceClient, (__bridge CFStringRef) @"Product");
+    if ([name isEqualToString:[NSString stringWithUTF8String:argv[1]]]) {
+      IOHIDEventRef event = IOHIDServiceClientCopyEvent(
+          serviceClient, kIOHIDEventTypeTemperature, 0, 0);
+      NSNumber *value;
+      double temp = 0.0;
+      if (event != 0) {
+        temp = IOHIDEventGetFloatValue(
+            event, IOHIDEventFieldBase(kIOHIDEventTypeTemperature));
+      }
+      value = [NSNumber numberWithDouble:temp];
+      printf("%.1lf°C\n", [value doubleValue]);
+      break;
+    }
+  }
+
+  return 0;
+}
+EOF
+  clang -o $cache_dir/cpu-temp $cache_dir/cpu-temp.o -framework Foundation -framework IOKit
+  rm $cache_dir/cpu-temp.o
+fi
+
 # Cleanup cache file when interrupted.
 trap '[ -f $cache_file ] && rm $cache_file; exit' INT
 trap '[ -f $cache_file ] && rm $cache_file; exit' TERM
@@ -17,8 +80,8 @@ ioreg -w0 -l | grep BatteryInstalled &> /dev/null && \
   has_battery=true || has_battery=false
 
 while true; do
-  # # Get the current CPU temperature.
-  # cpu_temp="`/usr/local/bin/osx-cpu-temp`"
+  # Get the current CPU temperature.
+  cpu_temp="`$cache_dir/cpu-temp 'PMU tdie0'` "
 
   cpu_load=$(sudo powermetrics --format text \
       --sample-rate 1200 --sample-count 1 --samplers cpu_power |