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59 lines
1.6 KiB
Go
59 lines
1.6 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package event
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import "fmt"
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func ExampleTypeMux() {
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type someEvent struct{ I int }
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type otherEvent struct{ S string }
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type yetAnotherEvent struct{ X, Y int }
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var mux TypeMux
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// Start a subscriber.
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done := make(chan struct{})
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sub := mux.Subscribe(someEvent{}, otherEvent{})
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go func() {
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for event := range sub.Chan() {
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fmt.Printf("Received: %#v\n", event)
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}
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fmt.Println("done")
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close(done)
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}()
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// Post some events.
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mux.Post(someEvent{5})
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mux.Post(yetAnotherEvent{X: 3, Y: 4})
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mux.Post(someEvent{6})
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mux.Post(otherEvent{"whoa"})
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// Stop closes all subscription channels.
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// The subscriber goroutine will print "done"
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// and exit.
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mux.Stop()
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// Wait for subscriber to return.
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<-done
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// Output:
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// Received: event.someEvent{I:5}
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// Received: event.someEvent{I:6}
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// Received: event.otherEvent{S:"whoa"}
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// done
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}
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