Abstracts CPU & mem devices.

Finishes device refactoring: temps

Refactoring to allow updating maps. Simpler, and optimizable.

1 files changed, 72 insertions, 0 deletions

diff --git a/devices/temp_openbsd.go b/devices/temp_openbsd.go
new file mode 100644
index 0000000..410cc4a
--- /dev/null
+++ b/devices/temp_openbsd.go
@@ -0,0 +1,72 @@
+// +build openbsd
+
+package devices
+
+// loosely based on https://github.com/openbsd/src/blob/master/sbin/sysctl/sysctl.c#L2517
+
+// #include <sys/time.h>
+// #include <sys/sysctl.h>
+// #include <sys/sensors.h>
+import "C"
+
+import (
+	"strconv"
+	"syscall"
+	"unsafe"
+)
+
+func init() {
+	RegisterTemp(update)
+}
+
+func update(temps map[string]int) map[string]error {
+	mib := []C.int{0, 1, 2, 3, 4}
+
+	var snsrdev C.struct_sensordev
+	var len C.ulong = C.sizeof_struct_sensordev
+
+	mib[0] = C.CTL_HW
+	mib[1] = C.HW_SENSORS
+	mib[3] = C.SENSOR_TEMP
+
+	var i C.int
+	for i = 0; ; i++ {
+		mib[2] = i
+		if v, e := C.sysctl(&mib[0], 3, unsafe.Pointer(&snsrdev), &len, nil, 0); v == -1 {
+			if e == syscall.ENXIO {
+				continue
+			}
+			if e == syscall.ENOENT {
+				break
+			}
+		}
+		getTemp(temps, mib, 4, &snsrdev, 0)
+	}
+	return nil
+}
+
+func getTemp(temps map[string]int, mib []C.int, mlen int, snsrdev *C.struct_sensordev, index int) {
+	switch mlen {
+	case 4:
+		k := mib[3]
+		var numt C.int
+		for numt = 0; numt < snsrdev.maxnumt[k]; numt++ {
+			mib[4] = numt
+			getTemp(temps, mib, mlen+1, snsrdev, int(numt))
+		}
+	case 5:
+		var snsr C.struct_sensor
+		var slen C.size_t = C.sizeof_struct_sensor
+
+		if v, _ := C.sysctl(&mib[0], 5, unsafe.Pointer(&snsr), &slen, nil, 0); v == -1 {
+			return
+		}
+
+		if slen > 0 && (snsr.flags&C.SENSOR_FINVALID) == 0 {
+			key := C.GoString(&snsrdev.xname[0]) + ".temp" + strconv.Itoa(index)
+			temp := int((snsr.value - 273150000.0) / 1000000.0)
+
+			temps[key] = temp
+		}
+	}
+}