The following program constantly prints a value larger than 1.02
package main
import "fmt"
func main() {
foo, bar := make(chan struct{}), make(chan struct{})
close(foo)
close(bar)
x, y := 0.0, 0.0
f := func(){x++}
g := func(){y++}
for i := 0; i < 1000000; i++ {
select {
case <-bar: g()
case <-foo: f()
case <-bar: g()
case <-foo: f()
case <-bar: g()
case <-foo: f()
}
}
fmt.Println(x/y)
}
if the last two cases are removed, then it becomes quit fair.
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