Merge pull request #436 from cgzones/freebsd

FreeBSD: add support for CPU frequency and temperature
Tested on two physical systems running FreeBSD 12.1

CPUMeter.c

@@ -79,7 +79,7 @@ static void CPUMeter_updateValues(Meter* this) {
       }
    }
 
-   #ifdef HAVE_SENSORS_SENSORS_H
+   #ifdef BUILD_WITH_CPU_TEMP
    if (this->pl->settings->showCPUTemperature) {
       double cpuTemperature = this->values[CPU_METER_TEMPERATURE];
       if (isnan(cpuTemperature))
@@ -150,7 +150,7 @@ static void CPUMeter_display(const Object* cast, RichString* out) {
       }
    }
 
-   #ifdef HAVE_SENSORS_SENSORS_H
+   #ifdef BUILD_WITH_CPU_TEMP
    if (this->pl->settings->showCPUTemperature) {
       char cpuTemperatureBuffer[10];
       double cpuTemperature = this->values[CPU_METER_TEMPERATURE];

DisplayOptionsPanel.c

@@ -118,8 +118,16 @@ DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager*
    Panel_add(super, (Object*) CheckItem_newByRef("Add guest time in CPU meter percentage", &(settings->accountGuestInCPUMeter)));
    Panel_add(super, (Object*) CheckItem_newByRef("Also show CPU percentage numerically", &(settings->showCPUUsage)));
    Panel_add(super, (Object*) CheckItem_newByRef("Also show CPU frequency", &(settings->showCPUFrequency)));
-   #ifdef HAVE_SENSORS_SENSORS_H
-   Panel_add(super, (Object*) CheckItem_newByRef("Also show CPU temperature (requires libsensors)", &(settings->showCPUTemperature)));
+   #ifdef BUILD_WITH_CPU_TEMP
+   Panel_add(super, (Object*) CheckItem_newByRef(
+   #ifdef HTOP_LINUX
+                                                 "Also show CPU temperature (requires libsensors)",
+   #elif defined(HTOP_FREEBSD)
+                                                 "Also show CPU temperature",
+   #else
+   #error Unknown temperature implementation!
+   #endif
+                                                 &(settings->showCPUTemperature)));
    Panel_add(super, (Object*) CheckItem_newByRef("- Show temperature in degree Fahrenheit instead of Celsius", &(settings->degreeFahrenheit)));
    #endif
    Panel_add(super, (Object*) CheckItem_newByRef("Enable the mouse", &(settings->enableMouse)));

Settings.c

@@ -205,7 +205,7 @@ static bool Settings_read(Settings* this, const char* fileName, int initialCpuCo
          this->showCPUUsage = atoi(option[1]);
       } else if (String_eq(option[0], "show_cpu_frequency")) {
          this->showCPUFrequency = atoi(option[1]);
-      #ifdef HAVE_SENSORS_SENSORS_H
+      #ifdef BUILD_WITH_CPU_TEMP
       } else if (String_eq(option[0], "show_cpu_temperature")) {
          this->showCPUTemperature = atoi(option[1]);
       } else if (String_eq(option[0], "degree_fahrenheit")) {
@@ -315,7 +315,7 @@ int Settings_write(const Settings* this) {
    fprintf(fd, "cpu_count_from_one=%d\n", (int) this->countCPUsFromOne);
    fprintf(fd, "show_cpu_usage=%d\n", (int) this->showCPUUsage);
    fprintf(fd, "show_cpu_frequency=%d\n", (int) this->showCPUFrequency);
-   #ifdef HAVE_SENSORS_SENSORS_H
+   #ifdef BUILD_WITH_CPU_TEMP
    fprintf(fd, "show_cpu_temperature=%d\n", (int) this->showCPUTemperature);
    fprintf(fd, "degree_fahrenheit=%d\n", (int) this->degreeFahrenheit);
    #endif
@@ -363,7 +363,7 @@ Settings* Settings_new(int initialCpuCount) {
    this->countCPUsFromOne = false;
    this->showCPUUsage = true;
    this->showCPUFrequency = false;
-   #ifdef HAVE_SENSORS_SENSORS_H
+   #ifdef BUILD_WITH_CPU_TEMP
    this->showCPUTemperature = false;
    this->degreeFahrenheit = false;
    #endif

Settings.h

@@ -41,7 +41,7 @@ typedef struct Settings_ {
    bool detailedCPUTime;
    bool showCPUUsage;
    bool showCPUFrequency;
-   #ifdef HAVE_SENSORS_SENSORS_H
+   #ifdef BUILD_WITH_CPU_TEMP
    bool showCPUTemperature;
    bool degreeFahrenheit;
    #endif

configure.ac

@@ -509,6 +509,9 @@ case "$enable_sensors" in
       AC_MSG_ERROR([bad value '$enable_sensors' for --enable-sensors])
       ;;
 esac
+if test "$enable_sensors" = yes || test "$my_htop_platform" = freebsd; then
+   AC_DEFINE([BUILD_WITH_CPU_TEMP], [1], [Define if CPU temperature option should be enabled.])
+fi
 
 # ----------------------------------------------------------------------
 

freebsd/FreeBSDProcessList.c

@@ -12,6 +12,7 @@ in the source distribution for its full text.
 #include <assert.h>
 #include <dirent.h>
 #include <limits.h>
+#include <math.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/_iovec.h>
@@ -171,7 +172,7 @@ void ProcessList_delete(ProcessList* this) {
    free(this);
 }
 
-static inline void FreeBSDProcessList_scanCPUTime(ProcessList* pl) {
+static inline void FreeBSDProcessList_scanCPU(ProcessList* pl) {
    const FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
 
    int cpus   = pl->cpuCount;   // actual CPU count
@@ -250,6 +251,67 @@ static inline void FreeBSDProcessList_scanCPUTime(ProcessList* pl) {
       cpuData->systemAllPercent = cp_time_p[CP_SYS] + cp_time_p[CP_INTR];
       // this one is not really used
       //cpuData->idlePercent      = cp_time_p[CP_IDLE];
+
+      cpuData->temperature = NAN;
+      cpuData->frequency = NAN;
+
+      const int coreId = (cpus == 1) ? 0 : (i - 1);
+      if (coreId < 0)
+         continue;
+
+      // TODO: test with hyperthreading and multi-cpu systems
+      if (pl->settings->showCPUTemperature) {
+         int temperature;
+         size_t len = sizeof(temperature);
+         char mibBuffer[32];
+         xSnprintf(mibBuffer, sizeof(mibBuffer), "dev.cpu.%d.temperature", coreId);
+         int r = sysctlbyname(mibBuffer, &temperature, &len, NULL, 0);
+         if (r == 0)
+            cpuData->temperature = (double)(temperature - 2732) / 10.0; // convert from deci-Kelvin to Celsius
+      }
+
+      // TODO: test with hyperthreading and multi-cpu systems
+      if (pl->settings->showCPUFrequency) {
+         int frequency;
+         size_t len = sizeof(frequency);
+         char mibBuffer[32];
+         xSnprintf(mibBuffer, sizeof(mibBuffer), "dev.cpu.%d.freq", coreId);
+         int r = sysctlbyname(mibBuffer, &frequency, &len, NULL, 0);
+         if (r == 0)
+            cpuData->frequency = frequency; // keep in MHz
+      }
+   }
+
+   // calculate max temperature and avg frequency for average meter and
+   // propagate frequency to all cores if only supplied for CPU 0
+   if (cpus > 1) {
+      if (pl->settings->showCPUTemperature) {
+         double maxTemp = NAN;
+         for (int i = 1; i < maxcpu; i++) {
+            const double coreTemp = fpl->cpus[i].temperature;
+            if (isnan(coreTemp))
+               continue;
+
+            maxTemp = MAXIMUM(maxTemp, coreTemp);
+         }
+
+         fpl->cpus[0].temperature = maxTemp;
+      }
+
+      if (pl->settings->showCPUFrequency) {
+         const double coreZeroFreq = fpl->cpus[1].frequency;
+         double freqSum = coreZeroFreq;
+         if (!isnan(coreZeroFreq)) {
+            for (int i = 2; i < maxcpu; i++) {
+               if (isnan(fpl->cpus[i].frequency))
+                  fpl->cpus[i].frequency = coreZeroFreq;
+
+               freqSum += fpl->cpus[i].frequency;
+            }
+
+            fpl->cpus[0].frequency = freqSum / (maxcpu - 1);
+         }
+      }
    }
 }
 
@@ -443,7 +505,7 @@ void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
 
    openzfs_sysctl_updateArcStats(&fpl->zfs);
    FreeBSDProcessList_scanMemoryInfo(super);
-   FreeBSDProcessList_scanCPUTime(super);
+   FreeBSDProcessList_scanCPU(super);
 
    // in pause mode only gather global data for meters (CPU/memory/...)
    if (pauseProcessUpdate) {

freebsd/FreeBSDProcessList.h

@@ -23,6 +23,9 @@ typedef struct CPUData_ {
    double systemPercent;
    double irqPercent;
    double systemAllPercent;
+
+   double frequency;
+   double temperature;
 } CPUData;
 
 typedef struct FreeBSDProcessList_ {

freebsd/Platform.c

@@ -209,8 +209,8 @@ double Platform_setCPUValues(Meter* this, int cpu) {
 
    percent = CLAMP(percent, 0.0, 100.0);
 
-   v[CPU_METER_FREQUENCY] = NAN;
-   v[CPU_METER_TEMPERATURE] = NAN;
+   v[CPU_METER_FREQUENCY] = cpuData->frequency;
+   v[CPU_METER_TEMPERATURE] = cpuData->temperature;
 
    return percent;
 }