Q: The thread function write(ch, timer), the function is to start a thread, execute printing cyclically, and the printing condition is to trigger ch chane or the timer timer will trigger every once in a while
GPT: The following is a sample Golang code with a thread function called `write` that will perform a print operation when the `ch` channel is triggered or the timer `timer` is triggered every once in a while:
```go
package main
import (
"fmt"
"time"
)
func write(ch <-chan bool, interval time.Duration) {
ticker := time.NewTicker(interval)
defer ticker.Stop()
for { select { case <-ch: fmt.Println("Receive the trigger of channel ch, execute the print operation") case <-ticker.C: fmt.Println("Triggered by the timer, execute the print operation at regular intervals") } } }
func main() { ch := make(chan bool) interval := 2 * time.Second // trigger a timer every 2 seconds
go write(ch, interval)
// Simulate triggering the ch channel, you can send a signal to the ch channel to trigger printing when needed
go func() { time.Sleep(3 * time.Second) ch <- true }()
// wait here for a while to watch the output
time.Sleep(7 * time.Second)
}
```
In this example, the `write` function uses the `select` statement to listen to the `ch` channel and the timer `ticker` that fires at regular intervals. If the `ch` channel receives a signal or a timer fires, it will perform a print operation.
In the `main` function, we create a `ch` channel and a timer `ticker` that fires every 2 seconds, and then call the `write` function in a separate goroutine to start the thread. We simulate the event that triggers the `ch` channel and observe the printout after the program has been running for some time.
This example demonstrates how to handle `ch` channel triggered and timer triggered cases at the same time. According to your needs, you can adjust the value of `interval` to change the interval of timer firing.