func aGoroutine(a int) {
if a == 4 {
//panic("test panic in goroutine 4")
}
for i := 0; i < a; i++ {
tardisgolib.Gosched()
}
(&aGrCtrMux).Lock()
atomic.AddInt32(&aGrCtr, -1)
(&aGrCtrMux).Unlock()
aGrWG.Done()
}
func pushBooks(x, y *float64, state *int, cartLoad int) {
*state = Full
for *x = 0.0; *x < 150.0; (*x) += 10.0 / float64(cartLoad) {
if *y > 0.0 { // create bumps in the road
*y = 0.0
} else {
*y = float64(tardisgolib.HAXE("Std.random(3);")) // random small bumps
}
tardisgolib.Gosched() // without this, the animation would not show each state
}
if *x > 150.0 { // constrain large x offsets
*x = 150.0
}
*y = 0.0
}
func moreBooks(x, y *float64, state *int) {
*state = Empty
for *x > 0.0 {
*x -= 10.0
if *x < 0.0 { // no -ve x offsets please
*x = 0.0
}
if *y > 0.0 { // create bumps in the road
*y = 0.0
} else {
*y = float64(tardisgolib.HAXE("Std.random(5);")) // random bigger bumps
}
tardisgolib.Gosched() // would not show state without this, the animation would jump.
}
*y = 0.0
}
func main() {
// As before we'll count how many operations we perform.
var ops int64
// The `reads` and `writes` channels will be used by
// other goroutines to issue read and write requests,
// respectively.
reads := make(chan *readOp)
writes := make(chan *writeOp)
// Here is the goroutine that owns the `state`, which
// is a map as in the previous example but now private
// to the stateful goroutine. This goroutine repeatedly
// selects on the `reads` and `writes` channels,
// responding to requests as they arrive. A response
// is executed by first performing the requested
// operation and then sending a value on the response
// channel `resp` to indicate success (and the desired
// value in the case of `reads`).
go func() {
state := make(map[int]int)
for {
select {
case read := <-reads:
read.resp <- state[read.key]
case write := <-writes:
state[write.key] = write.val
write.resp <- true
}
}
}()
// This starts 100 goroutines to issue reads to the
// state-owning goroutine via the `reads` channel.
// Each read requires constructing a `readOp`, sending
// it over the `reads` channel, and the receiving the
// result over the provided `resp` channel.
for r := 0; r < 100; r++ {
go func() {
for {
read := &readOp{
key: int(tardisgolib.HAXE("Std.random(5);")), // rand.Intn(5),
resp: make(chan int)}
reads <- read
<-read.resp
atomic.AddInt64(&ops, 1)
}
}()
}
// We start 10 writes as well, using a similar
// approach.
for w := 0; w < 10; w++ {
go func() {
for {
write := &writeOp{
key: int(tardisgolib.HAXE("Std.random(5);")), // rand.Intn(5),
val: int(tardisgolib.HAXE("Std.random(100);")), // rand.Intn(100),
resp: make(chan bool)}
writes <- write
<-write.resp
atomic.AddInt64(&ops, 1)
}
}()
}
// Let the goroutines work for a second.
//time.Sleep(time.Second)
for i := 0; i < 1000; i++ {
tardisgolib.Gosched()
}
// Finally, capture and report the `ops` count.
opsFinal := atomic.LoadInt64(&ops)
//fmt.Println("ops:", opsFinal)
println("ops:", int(opsFinal)) // TODO println of a 64-bit int does not show the actual value on all platforms, only the type name see issue #18
}
func loop(n int) { // add some delay when required
for n > 0 {
n--
tardisgolib.Gosched() // give up control in order to show the gopher waiting
}
}
// Gosched implements runtime.Goshed
func Gosched() { tardisgolib.Gosched() }