CPU (OpenBSD): support CPU temp detection

Author: CarterLi

src/detection/cpu/cpu_obsd.c

@@ -1,6 +1,9 @@
 #include "cpu.h"
 #include "common/sysctl.h"
 
+#include <sys/time.h>
+#include <sys/sensors.h>
+
 const char* ffDetectCPUImpl(const FFCPUOptions* options, FFCPUResult* cpu)
 {
     if (ffSysctlGetString(CTL_HW, HW_MODEL, &cpu->name))
@@ -13,7 +16,14 @@ const char* ffDetectCPUImpl(const FFCPUOptions* options, FFCPUResult* cpu)
     ffCPUDetectSpeedByCpuid(cpu);
 
     cpu->frequencyBase = (uint32_t) ffSysctlGetInt(CTL_HW, HW_CPUSPEED, 0);
-    cpu->temperature = FF_CPU_TEMP_UNSET; // HW_SENSORS?
+    cpu->temperature = FF_CPU_TEMP_UNSET;
+    if (options->temp)
+    {
+        struct sensor sensors;
+        size_t size = sizeof(sensors);
+        if (sysctl((int[]) {CTL_HW, HW_SENSORS, 0, SENSOR_TEMP, 0}, 5, &sensors, &size, NULL, 0) == 0)
+            cpu->temperature = (double) (sensors.value - 273150000) / 1E6;
+    }
 
     return NULL;
 }