remove openbsd amd64 cgo

collector/interrupts_openbsd_amd64.go

@@ -0,0 +1,113 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !nointerrupts
+
+package collector
+
+import (
+	"fmt"
+	"strconv"
+	"unsafe"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"golang.org/x/sys/unix"
+)
+
+const (
+	KERN_INTRCNT        = 63
+	KERN_INTRCNT_NUM    = 1
+	KERN_INTRCNT_CNT    = 2
+	KERN_INTRCNT_NAME   = 3
+	KERN_INTRCNT_VECTOR = 4
+)
+
+func nintr() _C_int {
+	mib := [3]_C_int{unix.CTL_KERN, KERN_INTRCNT, KERN_INTRCNT_NUM}
+	buf, err := sysctl(mib[:])
+	if err != nil {
+		return 0
+	}
+	return *(*_C_int)(unsafe.Pointer(&buf[0]))
+}
+
+func intr(idx _C_int) (itr interrupt, err error) {
+	mib := [4]_C_int{unix.CTL_KERN, KERN_INTRCNT, KERN_INTRCNT_NAME, idx}
+	buf, err := sysctl(mib[:])
+	if err != nil {
+		return
+	}
+	dev := *(*[128]byte)(unsafe.Pointer(&buf[0]))
+	itr.device = string(dev[:])
+
+	mib[2] = KERN_INTRCNT_VECTOR
+	buf, err = sysctl(mib[:])
+	if err != nil {
+		return
+	}
+	itr.vector = *(*int)(unsafe.Pointer(&buf[0]))
+
+	mib[2] = KERN_INTRCNT_CNT
+	buf, err = sysctl(mib[:])
+	if err != nil {
+		return
+	}
+	count := *(*uint64)(unsafe.Pointer(&buf[0]))
+	itr.values = []float64{float64(count)}
+	return
+}
+
+var (
+	interruptLabelNames = []string{"cpu", "type", "devices"}
+)
+
+func (c *interruptsCollector) Update(ch chan<- prometheus.Metric) error {
+	interrupts, err := getInterrupts()
+	if err != nil {
+		return fmt.Errorf("couldn't get interrupts: %s", err)
+	}
+	for dev, interrupt := range interrupts {
+		for cpuNo, value := range interrupt.values {
+			ch <- c.desc.mustNewConstMetric(
+				value,
+				strconv.Itoa(cpuNo),
+				fmt.Sprintf("%d", interrupt.vector),
+				dev,
+			)
+		}
+	}
+	return nil
+}
+
+type interrupt struct {
+	vector int
+	device string
+	values []float64
+}
+
+func getInterrupts() (map[string]interrupt, error) {
+	var interrupts = map[string]interrupt{}
+
+	n := nintr()
+
+	for i := _C_int(0); i < n; i++ {
+		itr, err := intr(i)
+		if err != nil {
+			return nil, err
+		}
+
+		interrupts[itr.device] = itr
+	}
+
+	return interrupts, nil
+}