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515b5a933d
The collector is only implemented for a subset of all operating systems supported by go. Compilation will fail if attempted for another OS target.
41 lines
1 KiB
Go
41 lines
1 KiB
Go
// Copyright 2016 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !noloadavg
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package collector
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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func getLoad() ([]float64, error) {
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type loadavg struct {
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load [3]uint32
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scale int
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}
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b, err := unix.SysctlRaw("vm.loadavg")
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if err != nil {
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return nil, err
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}
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load := *(*loadavg)(unsafe.Pointer((&b[0])))
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scale := float64(load.scale)
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return []float64{
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float64(load.load[0]) / scale,
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float64(load.load[1]) / scale,
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float64(load.load[2]) / scale,
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}, nil
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}
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