func findInRing(in *ring.Ring, f func(r interface{}) bool) *ring.Ring {
if f(in.Value) {
return in
}
for p := in.Next(); p != in; p = p.Next() {
if f(p.Value) {
return p
}
}
return nil
}
func (s *CJKBigramFilter) outputBigram(r *ring.Ring, itemsInRing *int, pos int) *analysis.Token {
if *itemsInRing == 2 {
thisShingleRing := r.Move(-1)
shingledBytes := make([]byte, 0)
// do first token
prev := thisShingleRing.Value.(*analysis.Token)
shingledBytes = append(shingledBytes, prev.Term...)
// do second token
thisShingleRing = thisShingleRing.Next()
curr := thisShingleRing.Value.(*analysis.Token)
shingledBytes = append(shingledBytes, curr.Term...)
token := analysis.Token{
Type: analysis.Double,
Term: shingledBytes,
Position: pos,
Start: prev.Start,
End: curr.End,
}
return &token
}
return nil
}
func (s *CJKBigramFilter) buildUnigram(r *ring.Ring, itemsInRing *int, pos int) *analysis.Token {
if *itemsInRing == 2 {
thisShingleRing := r.Move(-1)
// do first token
prev := thisShingleRing.Value.(*analysis.Token)
token := analysis.Token{
Type: analysis.Single,
Term: prev.Term,
Position: pos,
Start: prev.Start,
End: prev.End,
}
return &token
} else if *itemsInRing == 1 {
// do first token
prev := r.Value.(*analysis.Token)
token := analysis.Token{
Type: analysis.Single,
Term: prev.Term,
Position: pos,
Start: prev.Start,
End: prev.End,
}
return &token
}
return nil
}
func NewMainMenu(mapDir string, w, h int) (m *MainMenu) {
file, err := os.Open(mapDir)
defer file.Close()
if err != nil {
panic(err)
}
fis, err := file.Readdir(0)
if err != nil {
panic(err)
}
var maps *ring.Ring
for _, fi := range fis {
if strings.HasSuffix(fi.Name(), ".txt") {
name := fi.Name()
mapName := name[:len(name)-4]
r := ring.New(1)
r.Value = mapName
if maps != nil {
maps.Link(r)
} else {
maps = r
}
}
}
return &MainMenu{maps, time.Now(), w, h}
}
func printRing(r *ring.Ring) {
elements := make([]interface{}, 0, r.Len())
r.Do(func(i interface{}) {
elements = append(elements, i)
})
log.Printf("%v", elements)
}
func slicifyRing(r *ring.Ring) {
l := r.Len()
s := make([]WindowData, 0, l)
for i := 0; i < l; i++ {
s = append(s, r.Value.(WindowData))
r = r.Prev()
}
}
func slicifyRing(r *ring.Ring) {
l := r.Len()
s := make([]float64, 0, l)
for i := 0; i < l; i++ {
s = append(s, r.Value.(float64))
r = r.Prev()
}
}
func iterateRing(rng *ring.Ring, out chan Pair) {
i := 0
rng.Do(func(ringCurrent interface{}) {
out <- Pair{i, ringCurrent}
i++
})
}
func removeFromRing(r *ring.Ring, s string) *ring.Ring {
newRing := ring.New(0)
r.Do(func(v interface{}) {
if v != s {
newRing = addToRing(newRing, v.(string))
}
})
return newRing
}
func current_extremes(r *ring.Ring) (int, int) {
length := r.Len()
if length%2 != 0 {
fmt.Fprintln(os.Stderr, "error: Ring must be even")
os.Exit(1)
}
fmt.Println(r.Value)
return r.Value.(int), r.Move(length / 2).Value.(int)
}
func containsTask(finishedTasks *ring.Ring, taskId string) bool {
for i := 0; i < defaultFinishedTasksSize; i++ {
value := finishedTasks.Next().Value
if value == nil {
continue
}
if value.(string) == taskId {
return true
}
}
return false
}
func (m *MessageBuffer) AddMessage(channel, message string) {
if int32(m.buffer.Len()) >= m.maxsize { // buffer full?
m.lostmsgs += 1
return
}
var elem *ring.Ring = ring.New(1)
var msg *bufferedMessage = &bufferedMessage{
Channel: channel,
Message: message,
}
elem.Value = msg
// Add element elem to buffer.
m.buffer.Prev().Link(elem)
}
func seed(r *ring.Ring) *ring.Ring {
if r.Value == nil {
r.Value = new(bucket)
} else {
r.Value.(*bucket).Reset()
}
return r
}
func (s *CJKBigramFilter) flush(r *ring.Ring, itemsInRing *int, pos int) *analysis.Token {
var rv *analysis.Token
if *itemsInRing == 1 {
rv = s.buildUnigram(r, itemsInRing, pos)
}
r.Value = nil
*itemsInRing = 0
return rv
}
func (c *Cache) meta_add(key string, r *ring.Ring) {
c.evict()
c.keys[key] = r
r.Link(c.hand_hot)
if c.hand_hot == nil {
// first element
c.hand_hot = r
c.hand_cold = r
c.hand_test = r
}
if c.hand_cold == c.hand_hot {
c.hand_cold = c.hand_cold.Prev()
}
}
func (c *Cache) meta_del(r *ring.Ring) {
delete(c.keys, r.Value.(*entry).key)
if r == c.hand_hot {
c.hand_hot = c.hand_hot.Prev()
}
if r == c.hand_cold {
c.hand_cold = c.hand_cold.Prev()
}
if r == c.hand_test {
c.hand_test = c.hand_test.Prev()
}
r.Prev().Unlink(1)
}
func generadorTPS(nroMaxPeticiones uint64, lambda float64, q chan<- []byte, contadorPeticiones *uint64, forever bool, tiras *ring.Ring, procesoLlegada string) {
if procesoLlegada == "M" {
for ; forever || *contadorPeticiones < nroMaxPeticiones; *contadorPeticiones++ {
time.Sleep(time.Duration(int64(1000000000.0 * rand.ExpFloat64() / lambda)))
q <- (tiras.Value.([]byte))
tiras = tiras.Next()
}
} else { /* procesoLlegada == "D" */
// Utilizo un Ticker como referencia.
// Lo encapsulo en generadorTPS porque el Ticker utiliza un canal sincrono.
// aunque el ticker nunca se bloquea
ticker := time.NewTicker(time.Duration(int64(1000000000.0 / lambda)))
for ; forever || *contadorPeticiones < nroMaxPeticiones; *contadorPeticiones++ {
<-ticker.C
q <- (tiras.Value.([]byte))
tiras = tiras.Next()
}
ticker.Stop()
}
close(q)
}
func (rb *ringBuffer) read(lines int) []string {
if lines <= 0 {
return []string{}
}
// Only need a read lock because nothing we're about to do affects the internal state of the
// ringBuffer. Mutliple reads can happen in parallel. Only writing requires an exclusive lock.
rb.mutex.RLock()
defer rb.mutex.RUnlock()
var start *ring.Ring
if lines < rb.ring.Len() {
start = rb.ring.Move(-1 * (lines - 1))
} else {
start = rb.ring.Next()
}
data := make([]string, 0, lines)
start.Do(func(line interface{}) {
if line == nil || lines <= 0 {
return
}
lines--
data = append(data, line.(string))
})
return data
}
func (s *ShingleFilter) shingleCurrentRingState(ring *ring.Ring, itemsInRing int) analysis.TokenStream {
rv := make(analysis.TokenStream, 0)
for shingleN := s.min; shingleN <= s.max; shingleN++ {
// if there are enough items in the ring
// to produce a shingle of this size
if itemsInRing >= shingleN {
thisShingleRing := ring.Move(-(shingleN - 1))
shingledBytes := make([]byte, 0)
pos := 0
start := -1
end := 0
for i := 0; i < shingleN; i++ {
if i != 0 {
shingledBytes = append(shingledBytes, []byte(s.tokenSeparator)...)
}
curr := thisShingleRing.Value.(*analysis.Token)
if pos == 0 && curr.Position != 0 {
pos = curr.Position
}
if start == -1 && curr.Start != -1 {
start = curr.Start
}
if curr.End != -1 {
end = curr.End
}
shingledBytes = append(shingledBytes, curr.Term...)
thisShingleRing = thisShingleRing.Next()
}
token := analysis.Token{
Type: analysis.Shingle,
Term: shingledBytes,
}
if pos != 0 {
token.Position = pos
}
if start != -1 {
token.Start = start
}
if end != -1 {
token.End = end
}
rv = append(rv, &token)
}
}
return rv
}
func RingToStringInt64(r *ring.Ring, delim string, delta bool) string {
bb := new(bytes.Buffer)
prev := r.Value.(int64)
r = r.Next()
for i := 1; i < r.Len(); i++ {
if delta {
if r.Value.(int64) == int64(0) {
bb.WriteString(fmt.Sprintf("0%s", delim))
} else {
d := r.Value.(int64) - prev
bb.WriteString(fmt.Sprintf("%d%s", d, delim))
}
prev = r.Value.(int64)
} else {
bb.WriteString(fmt.Sprintf("%d%s", r.Value.(int64), delim))
}
r = r.Next()
}
return strings.TrimSuffix(bb.String(), delim)
}
func rollup(r *ring.Ring) *ring.Ring {
n := r.Next()
return seed(n)
}
func main() {
var n, m int
f, _ := os.Create("yes.pprof")
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
fmt.Scan(&n)
fmt.Scan(&m)
bucket2number := make(map[int]*ring.Ring)
number2bucket := map[int]int{0: 0, n - 1: n - 1}
bucketlen := map[int]int{0: 1, n - 1: 1}
bucket2number[0] = ring.New(1)
bucket2number[0].Value = 0
bucket2number[n-1] = ring.New(1)
bucket2number[n-1].Value = n - 1
var a, b int
var la, lb *ring.Ring
var debug = false
for i := 0; i <= m; i++ {
fmt.Scan(&a, &b)
ba, ok := number2bucket[a]
if !ok {
number2bucket[a] = a
bucketlen[a] = 1
ba = a
la = ring.New(1)
la.Value = a
bucket2number[ba] = la
} else {
la = bucket2number[ba]
}
bb, ok := number2bucket[b]
if !ok {
number2bucket[b] = b
bucketlen[b] = 1
bb = b
lb = ring.New(1)
lb.Value = b
bucket2number[bb] = lb
} else {
lb = bucket2number[bb]
}
if ba != bb {
// Not connected yet
if bucketlen[ba] < bucketlen[bb] {
la, lb = lb, la
ba, bb = bb, ba
}
for j := 0; j < bucketlen[bb]; j++ {
number2bucket[lb.Value.(int)] = ba
lb = lb.Next()
}
la.Link(lb)
bucketlen[ba] += bucketlen[bb]
delete(bucket2number, bb)
if number2bucket[0] == number2bucket[n-1] {
fmt.Printf("Connected at %d\n", i)
return
}
}
if debug {
fmt.Printf("%d -> %d\n", a, b)
fmt.Print("Bucket2Number\n")
for k, v := range bucket2number {
fmt.Print(k)
v.Do(
func(x interface{}) {
fmt.Printf(" %d", x.(int))
})
fmt.Println()
}
fmt.Print("Number2Bucket\n")
for k, v := range number2bucket {
fmt.Printf("%d: %d\n", k, v)
}
}
}
fmt.Println("Not connected")
}
