when you look at the code of etcd raft, the readyc variable in node.run () is also assigned to node.readyc.
by the same token, when you put Ready into readyc, you can also read data from node.readyc.
does an experiment: the following code creates a channel c and a structure node that contains channel ch.
assign c to node.ch. Then put the data into c, why can you take the data out of node.ch?
is the channel shared? But the printed address does not show the same address.
func main() {
c := make(chan int)
n := &node{
ch: make(chan int),
}
fmt.Println("c:", &c)
fmt.Println("n:", &n.ch)
//
c = n.ch
fmt.Println("c:", &c)
fmt.Println("n:", &n.ch)
// c
go func() {
c <- 1
c <- 2
}()
// c
e := <-c
fmt.Println("v1:", e)
// n.ch
d := <-n.ch
fmt.Println("v2:", d)
fmt.Println("c:", &c)
fmt.Println("n:", &n.ch)
}
type node struct {
ch chan int
}sample output:
c: 0xc42000c028
n: 0xc42000c030
c: 0xc42000c028
n: 0xc42000c030
v1: 1
v2: 2
c: 0xc42000c028
n: 0xc42000c030