get.pme.sh/pnats@v0.0.0-20240304004023-26bb5a137ed0/server/pse/pse_openbsd.go (about)

     1  // Copyright 2015-2018 The NATS Authors
     2  // Licensed under the Apache License, Version 2.0 (the "License");
     3  // you may not use this file except in compliance with the License.
     4  // You may obtain a copy of the License at
     5  //
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  //
    14  // Copied from pse_darwin.go
    15  
    16  package pse
    17  
    18  import (
    19  	"fmt"
    20  	"os"
    21  	"os/exec"
    22  )
    23  
    24  // ProcUsage returns CPU usage
    25  func ProcUsage(pcpu *float64, rss, vss *int64) error {
    26  	pidStr := fmt.Sprintf("%d", os.Getpid())
    27  	out, err := exec.Command("ps", "o", "pcpu=,rss=,vsz=", "-p", pidStr).Output()
    28  	if err != nil {
    29  		*rss, *vss = -1, -1
    30  		return fmt.Errorf("ps call failed:%v", err)
    31  	}
    32  	fmt.Sscanf(string(out), "%f %d %d", pcpu, rss, vss)
    33  	*rss *= 1024 // 1k blocks, want bytes.
    34  	*vss *= 1024 // 1k blocks, want bytes.
    35  	return nil
    36  }