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correct_ctx_order.go
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/
correct_ctx_order.go
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package main
import (
"context"
"fmt"
"sync"
"syscall"
"github.com/Code-Hex/sigctx"
)
// This is a simple case using `sigctx.WithSignals`
// and `sigctx.WithCancelSignals` together.
// It is very simple compared with mistake_ctx_order.go.
// So You should run `sigctx.WithCancelSignals` first and
// then `sigctx.WithSignals`.
func main() {
// First, Create a context to cancel all goroutines.
cancelctx := sigctx.WithCancelSignals(context.Background(), syscall.SIGHUP)
// Second, Wrap the cancel signal context to notify all goroutines.
signalctx := sigctx.WithSignals(cancelctx, syscall.SIGINT, syscall.SIGTERM)
var wg sync.WaitGroup
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for {
select {
// You do not have to think anything!!
// Let's use the `signalctx` for everything.
case <-sigctx.Recv(signalctx):
signal, err := sigctx.Signal(signalctx)
if err != nil {
fmt.Println(err.Error())
} else {
fmt.Println(signal.String())
}
case <-signalctx.Done():
fmt.Println(signalctx.Err())
return
}
}
}()
}
wg.Wait()
}