42 lines
835 B
Go
42 lines
835 B
Go
package hw05_parallel_execution //nolint:golint,stylecheck
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import (
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"errors"
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"log"
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"sync"
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)
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var ErrErrorsLimitExceeded = errors.New("errors limit exceeded")
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type Task func() error
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type Errors struct {
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count int
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mx sync.Mutex
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}
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func Run(tasks []Task, n int, m int) error {
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log.Println("Tasks:", len(tasks), "| Goroutines:", n, "| Errors:", m)
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errs := Errors{}
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for i := 0; i < len(tasks); i += n {
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wg := sync.WaitGroup{}
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for g := 1; g <= n && i+g < len(tasks); g++ {
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wg.Add(1)
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go func(rt Task, errs *Errors) {
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defer wg.Done()
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err := rt()
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if err != nil {
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errs.mx.Lock()
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errs.count++
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errs.mx.Unlock()
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}
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}(tasks[i+g], &errs)
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}
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wg.Wait()
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if m > 0 && errs.count > m {
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log.Println("Produced", errs.count, "errors of", m)
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return ErrErrorsLimitExceeded
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}
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}
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return nil
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}
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