github.com/ava-labs/avalanchego@v1.11.11/vms/rpcchainvm/runtime/subprocess/stopper.go (about)

     1  // Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
     2  // See the file LICENSE for licensing terms.
     3  
     4  package subprocess
     5  
     6  import (
     7  	"context"
     8  	"os/exec"
     9  	"sync"
    10  
    11  	"github.com/ava-labs/avalanchego/utils/logging"
    12  	"github.com/ava-labs/avalanchego/vms/rpcchainvm/runtime"
    13  )
    14  
    15  func NewStopper(logger logging.Logger, cmd *exec.Cmd) runtime.Stopper {
    16  	return &stopper{
    17  		cmd:    cmd,
    18  		logger: logger,
    19  	}
    20  }
    21  
    22  type stopper struct {
    23  	once   sync.Once
    24  	cmd    *exec.Cmd
    25  	logger logging.Logger
    26  }
    27  
    28  func (s *stopper) Stop(ctx context.Context) {
    29  	s.once.Do(func() {
    30  		stop(ctx, s.logger, s.cmd)
    31  	})
    32  }