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// Copyright 2018 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 solaris
// +build !nocpu
package collector
import (
"strconv"
"github.com/go-kit/kit/log"
"github.com/prometheus/client_golang/prometheus"
kstat "github.com/siebenmann/go-kstat"
)
// #include <unistd.h>
import "C"
type cpuCollector struct {
cpu typedDesc
logger log.Logger
}
func init() {
registerCollector("cpu", defaultEnabled, NewCpuCollector)
}
func NewCpuCollector(logger log.Logger) (Collector, error) {
return &cpuCollector{
cpu: typedDesc{nodeCPUSecondsDesc, prometheus.CounterValue},
logger: logger,
}, nil
}
func (c *cpuCollector) Update(ch chan<- prometheus.Metric) error {
ncpus := C.sysconf(C._SC_NPROCESSORS_ONLN)
tok, err := kstat.Open()
if err != nil {
return err
}
defer tok.Close()
for cpu := 0; cpu < int(ncpus); cpu++ {
ksCPU, err := tok.Lookup("cpu", cpu, "sys")
if err != nil {
return err
}
for k, v := range map[string]string{
"idle": "cpu_ticks_idle",
"kernel": "cpu_ticks_kernel",
"user": "cpu_ticks_user",
"wait": "cpu_ticks_wait",
} {
kstatValue, err := ksCPU.GetNamed(v)
if err != nil {
return err
}
ch <- c.cpu.mustNewConstMetric(float64(kstatValue.UintVal), strconv.Itoa(cpu), k)
}
}
return nil
}
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