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loadavg5.go
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loadavg5.go
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// +build windows
package windows
import (
"syscall"
"unsafe"
"github.com/mackerelio/mackerel-agent/logging"
"github.com/mackerelio/mackerel-agent/metrics"
. "github.com/mackerelio/mackerel-agent/util/windows"
)
type Loadavg5Generator struct {
query syscall.Handle
counters []*CounterInfo
}
var loadavg5Logger = logging.GetLogger("metrics.loadavg5")
func NewLoadavg5Generator() (*Loadavg5Generator, error) {
g := &Loadavg5Generator{0, nil}
var err error
g.query, err = CreateQuery()
if err != nil {
loadavg5Logger.Criticalf(err.Error())
return nil, err
}
counter, err := CreateCounter(g.query, "loadavg5", `\Processor(_Total)\% Processor Time`)
if err != nil {
loadavg5Logger.Criticalf(err.Error())
return nil, err
}
g.counters = append(g.counters, counter)
return g, nil
}
func (g *Loadavg5Generator) Generate() (metrics.Values, error) {
r, _, err := PdhCollectQueryData.Call(uintptr(g.query))
if r != 0 {
return nil, err
}
results := make(map[string]float64)
for _, v := range g.counters {
var value PDH_FMT_COUNTERVALUE_ITEM_DOUBLE
r, _, err = PdhGetFormattedCounterValue.Call(uintptr(v.Counter), PDH_FMT_DOUBLE, uintptr(0), uintptr(unsafe.Pointer(&value)))
if r != 0 && r != PDH_INVALID_DATA {
return nil, err
}
results[v.PostName] = value.FmtValue.DoubleValue
}
return results, nil
}