github.com/dolthub/dolt/go@v0.40.5-0.20240520175717-68db7794bea6/libraries/doltcore/env/actions/prog_handlers.go (about)

     1  // Copyright 2021 Dolthub, 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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package actions
    16  
    17  import (
    18  	"context"
    19  	"sync"
    20  
    21  	"github.com/dolthub/dolt/go/store/datas/pull"
    22  )
    23  
    24  func pullerProgFunc(ctx context.Context, statsCh <-chan pull.Stats) {
    25  	for {
    26  		select {
    27  		case <-ctx.Done():
    28  			return
    29  		default:
    30  		}
    31  		select {
    32  		case <-ctx.Done():
    33  			return
    34  		case <-statsCh:
    35  		default:
    36  		}
    37  	}
    38  }
    39  
    40  func NoopRunProgFuncs(ctx context.Context) (*sync.WaitGroup, chan pull.Stats) {
    41  	statsCh := make(chan pull.Stats)
    42  	wg := &sync.WaitGroup{}
    43  
    44  	wg.Add(1)
    45  	go func() {
    46  		defer wg.Done()
    47  		pullerProgFunc(ctx, statsCh)
    48  	}()
    49  
    50  	return wg, statsCh
    51  }
    52  
    53  func NoopStopProgFuncs(cancel context.CancelFunc, wg *sync.WaitGroup, statsCh chan pull.Stats) {
    54  	cancel()
    55  	close(statsCh)
    56  	wg.Wait()
    57  }