framework/task/handle.go

// Copyright (C) 2016 The Android Open Source Project
//
// 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.

package task

// Handle is a reference to a running task submitted to an executor.
// It can be used to check if the task has completed and get it's error result if it has one.
type Handle struct {
	Signal
	err *error
}

// Result returns the error result of the task.
// It will block until the task has completed.
func (h Handle) Result() error {
	h.Signal.Wait()
	return *h.err
}