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pid.go
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pid.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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.
package utils
import (
"fmt"
"os"
"sync"
)
var (
// pid the current running process id
pid string
// pidOnce make sure get pid once
pidOnce sync.Once
)
// CurrentPID return the current running process id
func CurrentPID() string {
pidOnce.Do(func() {
pid = fmt.Sprintf("%v", os.Getpid())
})
return pid
}