37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
// Copyright 2015-2018 The NATS 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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//
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// Copied from pse_darwin.go
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package pse
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import (
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"fmt"
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"os"
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"os/exec"
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)
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// ProcUsage returns CPU usage
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func ProcUsage(pcpu *float64, rss, vss *int64) error {
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pidStr := fmt.Sprintf("%d", os.Getpid())
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out, err := exec.Command("ps", "o", "pcpu=,rss=,vsz=", "-p", pidStr).Output()
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if err != nil {
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*rss, *vss = -1, -1
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return fmt.Errorf("ps call failed:%v", err)
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}
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fmt.Sscanf(string(out), "%f %d %d", pcpu, rss, vss)
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*rss *= 1024 // 1k blocks, want bytes.
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*vss *= 1024 // 1k blocks, want bytes.
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return nil
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}
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