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process.go
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process.go
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/*
* Copyright 2014-2019 Li Kexian
*
* 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.
*
* Go module for collecting host stat
* https://www.likexian.com/
*/
package hoststat
import (
"github.com/likexian/gokit/xfile"
"strconv"
"strings"
)
// ProcessStat storing process stat
type ProcessStat struct {
Pid int `json:"pid"`
Name string `json:"name"`
State string `json:"state"`
}
// StateMap is state map
var StateMap = map[string]string{
"R": "running",
"S": "sleeping",
"D": "disk sleep",
"T": "stopped",
"Z": "zombie",
"X": "dead",
}
// GetProcessStat returns process stat
func GetProcessStat() (stat []ProcessStat, err error) {
ls, err := xfile.ListDir("/proc/", xfile.TypeDir, -1)
if err != nil {
return
}
for _, f := range ls {
pid, err := strconv.Atoi(f.Name)
if err != nil {
continue
}
text, err := xfile.ReadFirstLine(f.Path + "/stat")
if err != nil {
continue
}
fields := strings.Fields(text)
if len(fields) > 3 {
name := strings.TrimSpace(strings.Trim(strings.Trim(fields[1], "("), ")"))
state := fields[2]
if _, ok := StateMap[state]; ok {
state = StateMap[state]
}
stat = append(stat, ProcessStat{pid, name, state})
}
}
return
}