github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/pkg/util/time.go (about)

     1  // Copyright 2023 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package util
    15  
    16  import (
    17  	"context"
    18  	"time"
    19  )
    20  
    21  // Hang will block the goroutine for a given duration, or return when `ctx` is done.
    22  func Hang(ctx context.Context, dur time.Duration) error {
    23  	timer := time.NewTimer(dur)
    24  	select {
    25  	case <-ctx.Done():
    26  		if !timer.Stop() {
    27  			<-timer.C
    28  		}
    29  		return ctx.Err()
    30  	case <-timer.C:
    31  		return nil
    32  	}
    33  }