FreeBSD Fixes

- Added NVIDIA GPU Temperature Support
- Fixed a bug where CPU temp would not be displayed if a syctl option was not found
- Fixed a bug where Swap was not being displayed on mirroed ZFS partitions.

src/widgets/mem_freebsd.go

@@ -42,7 +42,10 @@ func gatherSwapInfo() (MemoryInfo, error) {
 		}
 	}
 
-	ss := strings.Split(strings.TrimSuffix(string(output), "\n"), " ")
+	s := strings.TrimSuffix(string(output), "\n")
+	s = strings.ReplaceAll(s, "\n", " ")
+	ss := strings.Split(s, " ")
+	ss = ss[((len(ss)/3)-1)*3:]
 
 	return convert(ss)
 }

src/widgets/temp_freebsd.go

@@ -35,22 +35,60 @@ func refineOutput(output []byte) (float64, error) {
 	return value, nil
 }
 
+func collectNvidiaGPUSensors() []sensorMeasurement {
+	var measurements []sensorMeasurement
+
+	_, err := exec.Command("sysctl", "-n", "hw.nvidia.gpus.0.model").Output()
+	if err == nil {
+		output, err := exec.Command("nvidia-settings", "-q", "gpucoretemp", "-t").Output()
+		if err != nil {
+			log.Printf("Failed to get nvidia gpu temperature from nvidia-settings")
+		} else {
+			s := strings.TrimSuffix(string(output), "\n")
+			s = strings.ReplaceAll(s, "\n", " ")
+			ss := strings.Split(s, " ")
+			for i := 1; i < len(ss); i++ {
+				value, err := refineOutput([]byte(ss[i]))
+				if err != nil {
+					log.Printf("Failed to parse nvidia-settings output")
+				}
+				label := fmt.Sprintf("Nvidia GPU %d", i-1)
+				measurements = append(measurements, sensorMeasurement{label, value})
+			}
+		}
+	}
+
+	return measurements
+}
+
+func collectGPUSensors() []sensorMeasurement {
+	var measurements []sensorMeasurement
+
+	m := collectNvidiaGPUSensors()
+	measurements = append(measurements, m...)
+
+	return measurements
+}
+
 func collectSensors() ([]sensorMeasurement, error) {
 	var measurements []sensorMeasurement
 	for k, v := range sensorOIDS {
 		output, err := exec.Command("sysctl", "-n", k).Output()
 		if err != nil {
-			return nil, fmt.Errorf("failed to execute 'sysctl' command: %v", err)
+			continue
 		}
 
 		value, err := refineOutput(output)
 		if err != nil {
-			return nil, fmt.Errorf("failed to execute 'sysctl' command: %v", err)
+			continue
 		}
 
 		measurements = append(measurements, sensorMeasurement{v, value})
-
 	}
+
+	m := collectGPUSensors()
+	measurements = append(measurements, m...)
+
 	return measurements, nil
 
 }