func Ranger[T any]() (*Sender[T], *Receiver[T]) {
	c := make(chan T)
	d := make(chan bool)
	s := &Sender[T]{values: c, done: d}
	r := &Receiver[T]{values: c, done: d}
	runtime.SetFinalizer(r, r.finalize)
	return s, r
}

// A sender is used to send values to a Receiver.
type Sender[T any] struct {
	values chan<- T
	done   <-chan bool
}

// Send sends a value to the receiver. It returns whether any more

// license that can be found in the LICENSE file.

//go:build test_run

// Pass numbers along a chain of threads.

package main

import (
	"runtime"
	"strconv"

	"cgostdio/stdio"
)

const N = 10
const R = 5

func link(left chan<- int, right <-chan int) {
	// Keep the links in dedicated operating system
	// threads, so that this program tests coordination

func Ranger[T any]() (*Sender[T], *Receiver[T]) {
	c := make(chan T)
	d := make(chan bool)
	s := &Sender[T]{values: c, done: d}
	r := &Receiver[T]{values: c, done: d}
	runtime.SetFinalizer(r, r.finalize)
	return s, r
}

// A sender is used to send values to a Receiver.
type Sender[T any] struct {
	values chan<- T
	done <-chan bool
}

// Send sends a value to the receiver. It returns whether any more

// license that can be found in the LICENSE file.

package main

func main() { asmMain() }

func asmMain()

func startSelf()

func startChain()
func chain0()
func chain1()
func chain2()
func chainEnd()

func startRec()

// or the context is canceled, at which point the returned channel is closed.
func _Merge[Elem any](ctx context.Context, c1, c2 <-chan Elem) <-chan Elem {
	r := make(chan Elem)
	go func(ctx context.Context, c1, c2 <-chan Elem, r chan<- Elem) {
		defer close(r)
		for c1 != nil || c2 != nil {
			select {
			case <-ctx.Done():
				return
			case v1, ok := <-c1:
				if ok {
					r <- v1

-t table -N chain
-t table -A chain -f foo -b bar
-t table -I chain 2 -f foo -b bar

-t table -N chain
-t table -A chain -f foo -b bar
-t table -I chain 2 -f foo -b bar
-t table -A chain -f foo -b baz

* table
-N chain
-A chain -f foo -b bar
-I chain 2 -f foo -b bar
-I chain 1 -f foo -b bar

* nat
-A PREROUTING -f foo -b bar
COMMIT
* table
-N chain
-A chain -f foo -b bar
-I chain 2 -f foo -b bar
-A chain -f foo -b baz

Austin Clements <******@****.***> 1683216807 -0400