43 lines
643 B
Go
43 lines
643 B
Go
package cancelation
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import (
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"context"
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"time"
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)
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func SimpleCancelation() {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go func() {
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time.Sleep(5 * time.Second)
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cancel()
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}()
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if err := doSlowJob(ctx); err != nil {
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panic(err)
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}
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}
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func SimpleTimeout() {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := doSlowJob(ctx); err != nil {
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panic(err)
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}
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}
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func doSlowJob(ctx context.Context) error {
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for {
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select {
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case <-ctx.Done():
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return ctx.Err()
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default:
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// perform a portion of slow job
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time.Sleep(1 * time.Second)
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}
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}
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}
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// OMIT
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