39 lines
773 B
Go
39 lines
773 B
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package errs2
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import "sync"
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// Group is a collection of goroutines working on subtasks that are part of
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// the same overall task.
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type Group struct {
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wg sync.WaitGroup
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mu sync.Mutex
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errors []error
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}
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// Go calls the given function in a new goroutine.
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func (group *Group) Go(f func() error) {
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group.wg.Add(1)
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go func() {
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defer group.wg.Done()
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if err := f(); err != nil {
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group.mu.Lock()
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defer group.mu.Unlock()
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group.errors = append(group.errors, err)
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}
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}()
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}
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// Wait blocks until all function calls from the Go method have returned, then
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// returns all errors (if any) from them.
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func (group *Group) Wait() []error {
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group.wg.Wait()
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return group.errors
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}
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