func (z *zpHeap) add(y *y, s *State) {
var a []string
for sym := range s.actions {
a = append(a, sym.Name)
}
sort.Strings(a)
for _, nm := range a {
sym := y.Syms[nm]
actions := s.actions[sym]
action := actions[0]
if action.kind == 's' {
heap.Push(z, &zpElem{s, y.States[action.arg], sym, s.distance + len(sym.MinString())})
}
}
a = a[:0]
for sym := range s.gotos {
a = append(a, sym.Name)
}
sort.Strings(a)
for _, nm := range a {
sym := y.Syms[nm]
action := s.gotos[sym]
heap.Push(z, &zpElem{s, y.States[action.arg], sym, s.distance + len(sym.MinString())})
}
}
// Ingests an alert into the memoryAlertManager and creates a new
// AggregationInstance for it, if necessary.
func (s *memoryAlertManager) ingest(a *Alert) {
fp := a.Fingerprint()
agg, ok := s.aggregates[fp]
if !ok {
agg = &AlertAggregate{
Created: time.Now(),
}
agg.Ingest(a)
for _, r := range s.rules {
if r.Handles(agg.Alert) {
agg.Rule = r
break
}
}
s.aggregates[fp] = agg
heap.Push(&s.aggregatesByLastRefreshed, agg)
heap.Push(&s.aggregatesByNextNotification, agg)
s.needsNotificationRefresh = true
} else {
agg.Ingest(a)
heap.Init(&s.aggregatesByLastRefreshed)
}
}
func TestScanCursors(t *testing.T) {
s := ScanCursors{}
heap.Init(&s)
heap.Push(&s, &testScanCursor{
key: "b",
})
heap.Push(&s, &testScanCursor{
key: "a",
})
heap.Push(&s, &testScanCursor{
key: "c",
})
a := heap.Pop(&s).(*testScanCursor)
if a.key != "a" {
t.Errorf("expected a")
}
b := heap.Pop(&s).(*testScanCursor)
if b.key != "b" {
t.Errorf("expected b")
}
c := heap.Pop(&s).(*testScanCursor)
if c.key != "c" {
t.Errorf("expected c")
}
}
// Dijkstra's Algorithm is essentially a goalless Uniform Cost Search. That is, its results are roughly equivalent to
// running A* with the Null Heuristic from a single node to every other node in the graph -- though it's a fair bit faster
// because running A* in that way will recompute things it's already computed every call. Note that you won't necessarily get the same path
// you would get for A*, but the cost is guaranteed to be the same (that is, if multiple shortest paths exist, you may get a different shortest path).
//
// Like A*, Dijkstra's Algorithm likely won't run correctly with negative edge weights -- use Bellman-Ford for that instead
//
// Dijkstra's algorithm usually only returns a cost map, however, since the data is available this version will also reconstruct the path to every node
func Dijkstra(source Node, graph Graph, Cost func(Node, Node) float64) (paths map[int][]Node, costs map[int]float64) {
if Cost == nil {
if cgraph, ok := graph.(Coster); ok {
Cost = cgraph.Cost
} else {
Cost = UniformCost
}
}
nodes := graph.NodeList()
openSet := &aStarPriorityQueue{}
closedSet := set.NewSet() // This is to make use of that same
costs = make(map[int]float64, len(nodes)) // May overallocate, will change if it becomes a problem
predecessor := make(map[int]Node, len(nodes))
nodeIDMap := make(map[int]Node, len(nodes))
heap.Init(openSet)
// I don't think we actually need the init step since I use a map check rather than inf to check if we're done
/*for _, node := range nodes {
if node == source {
heap.Push(openSet, internalNode{node, 0, 0})
costs[node] = 0
} else {
heap.Push(openSet, internalNode{node, math.MaxFloat64, math.MaxFloat64})
predecessor[node] = -1
}
}*/
costs[source.ID()] = 0
heap.Push(openSet, internalNode{source, 0, 0})
for openSet.Len() != 0 {
node := heap.Pop(openSet).(internalNode)
/* if _, ok := costs[node.int]; !ok {
break
} */
if closedSet.Contains(node.ID()) { // As in A*, prevents us from having to slowly search and reorder the queue
continue
}
nodeIDMap[node.ID()] = node
closedSet.Add(node.ID())
for _, neighbor := range graph.Successors(node) {
tmpCost := costs[node.ID()] + Cost(node, neighbor)
if cost, ok := costs[neighbor.ID()]; !ok || tmpCost < cost {
costs[neighbor.ID()] = cost
predecessor[neighbor.ID()] = node
heap.Push(openSet, internalNode{neighbor, cost, cost})
}
}
}
paths = make(map[int][]Node, len(costs))
for node, _ := range costs { // Only reconstruct the path if one exists
paths[node] = rebuildPath(predecessor, nodeIDMap[node])
}
return paths, costs
}
// DerivePath returns the cheapest way to satisfy the MSP (the one with the minimal number of delegations).
//
// ok: True if the MSP can be satisfied with current delegations; false if not.
// names: The names in the top-level threshold gate that need to be delegated.
// locs: The index in the treshold gate for each name.
// trace: All names that must be delegated for for this gate to be satisfied.
func (m MSP) DerivePath(db UserDatabase) (ok bool, names []string, locs []int, trace []string) {
ts := &TraceSlice{}
for i, cond := range m.Conds {
switch cond := cond.(type) {
case Name:
if db.CanGetShare(cond.string) {
heap.Push(ts, TraceElem{
i,
[]string{cond.string},
[]string{cond.string},
})
}
case Formatted:
sok, _, _, strace := MSP(cond).DerivePath(db)
if sok {
heap.Push(ts, TraceElem{i, []string{}, strace})
}
}
if (*ts).Len() > m.Min { // If we can otherwise satisfy the threshold gate
heap.Pop(ts) // Drop the TraceElem with the heaviest trace (the one that requires the most delegations).
}
}
ok = (*ts).Len() >= m.Min
locs, names, trace = ts.Compact()
return
}
func TestRemove(t *testing.T) {
var count int
if golangcafeheap.Len() <= 0 {
// Add時に0件になるので…。
heap.Push(golangcafeheap, GolangCafe{Name: "ttyokoyama", Priority: 1, Count: 13, Index: 2})
heap.Push(golangcafeheap, GolangCafe{Name: "taknb2nch", Priority: 2, Count: 13, Index: 3})
heap.Push(golangcafeheap, GolangCafe{Name: "qt_luigi", Priority: 3, Count: 13, Index: 4})
heap.Push(golangcafeheap, GolangCafe{Name: "tam_x", Priority: 4, Count: 1, Index: 1})
} else {
count = golangcafeheap.Len()
}
heap.Remove(golangcafeheap, 2)
if golangcafeheap.Len() != (count - 1) {
t.Errorf("golangcafeheap.Len() = %d, %d", golangcafeheap.Len(), count)
}
n := golangcafeheap.Len()
for i := 0; i < n; i++ {
item := golangcafeheap.Pop()
golangcafe := item.(*GolangCafe)
t.Logf("Name: %s Priority: %d Count: %d Index: %d",
golangcafe.Name, golangcafe.Priority, golangcafe.Count, golangcafe.Index)
}
}
func TestPriorityQueueInit(t *testing.T) {
items := map[string]int{
"c": 5, "d": 3, "e": 0, "b": 15,
}
pq := JobQueue{}
heap.Init(&pq)
for id, pri := range items {
heap.Push(&pq, newJob(id, pri))
}
//push in a new job with a high and low priority
heap.Push(&pq, newJob("a", 99))
heap.Push(&pq, newJob("z", -19))
// make sure the ordering is correct
target_order := []string{"a", "b", "c", "d", "e", "z"}
i := 0
for pq.Len() > 0 {
j := heap.Pop(&pq).(*Job)
t.Logf("Found job:%s pri:%f", j.Id, j.priority)
if j.Id != target_order[i] {
t.Errorf("Job id %s expected, but found %s at position %d priority %f", target_order[i], j.Id, i, j.priority)
}
i++
}
}
func startNextJob(event *models.Event, node *models.Node,
job *models.Job, scheduler scheduling.Scheduler,
eventQueue *models.EventQueue) {
node.CurJob = job
node.EstCompletion = event.Time + scheduler.GetAllocation(job)
completeTime := event.Time + job.RealExec
if job.AbsoluteDeadline() < node.EstCompletion && job.AbsoluteDeadline() < completeTime {
heap.Push(eventQueue, &models.Event{
Job: job,
Time: job.AbsoluteDeadline(),
Node: node,
Type: models.Miss,
})
} else if node.EstCompletion < completeTime {
heap.Push(eventQueue, &models.Event{
Job: job,
Time: node.EstCompletion,
Node: node,
Type: models.Stretch,
})
} else {
heap.Push(eventQueue, &models.Event{
Job: event.Job,
Time: completeTime,
Node: node,
Type: models.Complete,
})
}
}
func TestInit(t *testing.T) {
x = []string{"x", "y", "z"}
a = []string{"a", "b", "c"}
//fmt.Println(x, a)
hh := NewHistory(20)
heap.Init(hh)
//hh.PrintDump()
heap.Push(hh, x)
//hh.Add(x)
//hh.PrintDump()
if hh.heap[0][0] != "x" {
t.Errorf("First element incorrect: %#v", hh.heap[0][0])
}
heap.Push(hh, a)
//hh.Add(a)
//fmt.Printf("hh: %#v\n", hh)
if hh == nil {
t.Errorf("First history stored is: %#v", hh)
}
if hh.heap[0][0] != "a" {
t.Errorf("First element incorrect: %#v", hh.heap[0][0])
}
}
func (src Point) ShortestPath2(dst Point, m *Map, fp io.Writer) ([]Point, os.Error) {
h := &myHeap2{}
heap.Init(h)
heap.Push(h, NewNode(src, dst))
// Each entry points to previous point in path
seen := make(map[Location]bool)
expansions := make([]Point, 0)
popped := make([]*Node2, 0)
defer func() {
fmt.Fprintf(fp, "popped = %s;\n\n", nodes2js(popped))
fmt.Fprintf(fp, "expansions= %s;\n\n", points2js(expansions))
}()
for h.Len() != 0 {
n := heap.Pop(h).(*Node2)
popped = append(popped, n)
for n2 := range n.expand(m, dst, seen) {
log.Printf("%s -> %s", n, n2)
expansions = append(expansions, n2.Point)
if n2.Equals(dst) {
return n2.path(), nil
}
heap.Push(h, n2)
}
}
return nil, fmt.Errorf("no path found")
}
// Cluster by repeatedly splitting clusters.
// Use a heap as priority queue for picking clusters to split.
// The rule is to spilt the cluster with the most pixels.
// Terminate when the desired number of clusters has been populated
// or when clusters cannot be further split.
func (qz *quantizer) cluster() {
pq := new(queue)
// Initial cluster. populated at this point, but not analyzed.
c := &qz.cs[0]
var m uint32
for i := 1; ; {
// Only enqueue clusters that can be split.
if qz.setWidestChannel(c) {
heap.Push(pq, c)
}
// If no clusters have any color variation, mark the end of the
// cluster list and quit early.
if len(*pq) == 0 {
qz.cs = qz.cs[:i]
break
}
s := heap.Pop(pq).(*cluster) // get cluster to split
m = qz.medianCut(s)
c = &qz.cs[i] // set c to new cluster
i++
qz.split(s, c, m) // split s into c and s at value m
// Normal exit is when all clusters are populated.
if i == len(qz.cs) {
break
}
if qz.setWidestChannel(s) {
heap.Push(pq, s) // return s to queue
}
}
}
func TestEventQueue(t *testing.T) {
queue := make(EventQueue, 0, 4)
heap.Push(&queue, &Event{Y: 5})
heap.Push(&queue, &Event{Y: 3})
heap.Push(&queue, &Event{Y: 7})
heap.Push(&queue, &Event{Y: 1})
var e *Event
e = heap.Pop(&queue).(*Event)
if e.Y != 7 {
t.Fatalf("Wanted priority 7, got %v", e.Y)
}
e = heap.Pop(&queue).(*Event)
if e.Y != 5 {
t.Fatalf("Wanted priority 5, got %v", e.Y)
}
e = heap.Pop(&queue).(*Event)
if e.Y != 3 {
t.Fatalf("Wanted priority 3, got %v", e.Y)
}
e = heap.Pop(&queue).(*Event)
if e.Y != 1 {
t.Fatalf("Wanted priority 1, got %v", e.Y)
}
}
func (self *esSampler) Update(d interface{}) {
self.lock.Lock()
defer self.lock.Unlock()
u := rand.Float64()
key := math.Pow(u, 1.0/self.weight(d))
if self.samples.Len() < self.maxSize {
heap.Push(self.samples, esSampleItem{
data: d,
key: key,
})
return
}
s := *(self.samples)
min := s[0]
// The key of the new item is larger than a key in existing item.
// Add this new item.
if key > min.key {
heap.Pop(self.samples)
heap.Push(self.samples, esSampleItem{
data: d,
key: key,
})
}
}
func createTreeFromFrequencies(frequencies []uint, sizes_ []byte, ranks []byte) error {
// Create Huffman tree of (present) symbols
queue := make(HuffmanPriorityQueue, 0)
for i := range ranks {
heap.Push(&queue, &HuffmanNode{symbol: ranks[i], weight: frequencies[ranks[i]]})
}
for queue.Len() > 1 {
// Extract 2 minimum nodes, merge them and enqueue result
lNode := heap.Pop(&queue).(*HuffmanNode)
rNode := heap.Pop(&queue).(*HuffmanNode)
// Setting the symbol is critical to resolve ties during node sorting !
heap.Push(&queue, &HuffmanNode{weight: lNode.weight + rNode.weight, left: lNode, right: rNode, symbol: lNode.symbol})
}
rootNode := heap.Pop(&queue).(*HuffmanNode)
var err error
if len(ranks) == 1 {
sizes_[rootNode.symbol] = byte(1)
} else {
err = fillSizes(rootNode, 0, sizes_)
}
return err
}
func (fg FlowGenerator) makeFlows(logger chan LogEvent) EventQueue {
lambda := (fg.bandwidth * 1e9 * fg.load) / (fg.cdf.meanFlowSize() * 1500 * 8)
lambda /= 143
creationQueue := make(EventQueue, 0)
defer func() {
creationQueue = nil
}()
heap.Init(&creationQueue)
for i := 0; i < NUM_HOSTS; i++ {
for j := 0; j < NUM_HOSTS; j++ {
if i == j {
continue
}
f := &Flow{Start: 1e6 + (rand.ExpFloat64()/lambda)*1e6, Size: fg.cdf.value(), Source: uint8(i), Dest: uint8(j), LastTime: 0, FinishEvent: nil}
heap.Push(&creationQueue, makeCreationEvent(f))
}
}
eventQueue := make(EventQueue, 0)
for uint(len(eventQueue)) < fg.numFlows {
ev := heap.Pop(&creationQueue).(*Event)
logger <- LogEvent{Time: 0, Type: LOG_FLOW_GEN, Flow: ev.Flow}
eventQueue = append(eventQueue, makeArrivalEvent(ev.Flow))
nextTime := ev.Time + (rand.ExpFloat64()/lambda)*1e6
f := &Flow{Start: nextTime, Size: fg.cdf.value(), Source: ev.Flow.Source, Dest: ev.Flow.Dest, LastTime: 0, FinishEvent: nil}
heap.Push(&creationQueue, makeCreationEvent(f))
}
return eventQueue
}
func TestLen(t *testing.T) {
x = []string{"x", "y", "z"}
a = []string{"a", "b", "c"}
c := []string{"d", "e", "f"}
g := []string{"j", "k", "l"}
hh := NewHistory(20)
heap.Init(hh)
if hh.Len() != 0 {
t.Errorf("Limit should be zero! %#v", hh)
}
heap.Push(hh, x)
heap.Push(hh, a)
heap.Push(hh, c)
heap.Push(hh, g)
if hh.Len() != 4 {
t.Errorf("Error: hh.Len() not 4! %#v", hh)
}
for i := 0; i < 21; i++ {
heap.Push(hh, g)
}
hh.PrintDump()
if hh.Len() != 20 {
hh.PrintDump()
t.Errorf("Error: Length grew beyond it's supposed limit: %#v", hh.Len())
}
}
func TestGet(t *testing.T) {
if golangcafeheap.Len() <= 0 {
// Add時に0件になるので…。
heap.Push(golangcafeheap, GolangCafe{Name: "ttyokoyama", Priority: 1, Count: 13, Index: 2})
heap.Push(golangcafeheap, GolangCafe{Name: "taknb2nch", Priority: 2, Count: 13, Index: 3})
heap.Push(golangcafeheap, GolangCafe{Name: "qt_luigi", Priority: 3, Count: 13, Index: 4})
heap.Push(golangcafeheap, GolangCafe{Name: "tam_x", Priority: 4, Count: 1, Index: 1})
}
if golangcafeheap.Len() != 4 {
t.Errorf("golangcafeheap length = %d", golangcafeheap.Len())
}
popItem := heap.Pop(golangcafeheap)
if golangcafeheap.Len() != 3 {
t.Errorf("golangcafeheap length = %d", golangcafeheap.Len())
}
golangcafe := popItem.(*GolangCafe)
if golangcafe.Name != "ttyokoyama" {
t.Errorf("golangcafe.Name = %s", golangcafe.Name)
}
t.Logf("Name: %s Priority: %d Count: %d Index: %d",
golangcafe.Name, golangcafe.Priority, golangcafe.Count, golangcafe.Index)
}
func TestPop(t *testing.T) {
x = []string{"x", "y", "z"}
a = []string{"a", "b", "c"}
//fmt.Println(x, a)
hh := NewHistory(20)
heap.Init(hh)
heap.Push(hh, x)
heap.Push(hh, x)
heap.Push(hh, a)
/*
hh.Add(x)
hh.Add(a)
*/
lasti := hh.lastIndex()
if lasti != 2 {
hh.PrintDump()
t.Errorf("Last index not being calculated correctly %#v", lasti)
}
poped := hh.Pop().([]string)
//fmt.Printf("Popped: %#v", poped)
if poped[0] != "x" {
t.Errorf("Wrong element poped from stack: %#v\n", poped)
}
if hh.Len() != 2 {
hh.PrintDump()
t.Errorf("Too many items in heap? %#v\n", hh)
}
}
func (h *metricHeap) AddMetric(m *metric) {
// As the latest input are probably linked to more recent item, search from back in the heap
for i := len(h.values) - 1; i >= 0; i-- {
// Item found, update summary
if h.values[i].Timestamp.Equal(m.timestamp) {
h.values[i].Update(m)
return
}
if m.timestamp.Before(h.values[i].Timestamp) {
continue
} else {
// there are some older insert in the list: need to update
ms := new(metricSummary)
ms.Update(m)
heap.Push(h, *ms)
// Check if we have not exceeded the size
if uint(len(h.values)) > h.size {
heap.Pop(h)
}
return
}
}
// is the item to old to enter the heap, at this stage it means that we have not free slot up into the heap to insert it
if uint(len(h.values)) < h.size {
ms := new(metricSummary)
ms.Update(m)
heap.Push(h, *ms)
}
}
func (self *Session) handleDataPacket(data []byte) {
atomic.AddUint32(&self.incomingDataCount, uint32(1))
var serial uint32
binary.Read(bytes.NewReader(data[:4]), binary.BigEndian, &serial)
data = data[4:]
packet := Packet{serial: serial, data: data}
if serial == self.incomingSerial {
self.pushData(packet)
self.incomingSerial++
} else if serial > self.incomingSerial {
heap.Push(self.packetQueue, &packet)
}
if serial > self.maxIncomingSerial {
self.maxIncomingSerial = serial
}
for self.packetQueue.Len() > 0 {
next := heap.Pop(self.packetQueue).(*Packet)
if next.serial == self.incomingSerial {
self.pushData(*next)
self.incomingSerial++
} else {
heap.Push(self.packetQueue, next)
break
}
}
}
func TestPriorityQueueUpdate(t *testing.T) {
items := map[string]int{
"c": 5, "d": 3, "e": 0, "b": 15,
}
pq := JobQueue{}
heap.Init(&pq)
for id, pri := range items {
heap.Push(&pq, newJob(id, pri))
}
j := newJob("z", -19)
heap.Push(&pq, j)
// make j last run further back in time to act like we increased its priority
newt := time.Unix(1437856044-int64(1000), 0)
j.t_last_run = &newt
pq.Update(j)
top := heap.Pop(&pq).(*Job)
t.Logf("Found job:%s pri:%f", top.Id, top.priority)
if top.Id != "z" {
t.Errorf("z was not the top job of the queue; found %s instead", top.Id)
}
}
func (q *DelayQueue) Add(d Delayed) {
deadline := extractFromDelayed(d)
q.lock.Lock()
defer q.lock.Unlock()
// readd using the original deadline computed from the original delay
var readd func(*qitem)
readd = func(qp *qitem) {
q.lock.Lock()
defer q.lock.Unlock()
heap.Push(&q.queue, &qitem{
value: d,
priority: deadline,
readd: readd,
})
q.cond.Broadcast()
}
heap.Push(&q.queue, &qitem{
value: d,
priority: deadline,
readd: readd,
})
q.cond.Broadcast()
}
func (this *cPool) Push(conn *psmtpConn) []*psmtpConn {
// Evict if needed
var result []*psmtpConn
if this == nil {
return result
}
if this.capacity > 0 {
for {
if this.all.Len() < this.capacity {
break
}
if v, ok := this.PopAny(); ok {
result = append(result, v)
}
}
item := cqItem{conn: conn}
heap.Push(&this.all, &item)
sub, ok := this.byAuth[conn.auth]
if !ok {
sub = make(_cQueue, 0, this.capacity)
heap.Init(&sub)
}
heap.Push(&sub, &item)
this.byAuth[conn.auth] = sub
} else {
result = append(result, conn)
}
return result
}
func TestPriorityQueue(t *testing.T) {
pq := New()
heap.Init(pq)
heap.Push(pq, &Item{Value: "hello3", Priority: 3})
heap.Push(pq, &Item{Value: "hello1", Priority: 1})
heap.Push(pq, &Item{Value: "hello8", Priority: 8})
assert.Equal(t, 3+1+8, pq.PrioritySum())
item := pq.Peek()
assert.Equal(t, "hello8", item.(*Item).Value.(string))
item = pq.Peek()
assert.Equal(t, "hello8", item.(*Item).Value.(string))
item = heap.Pop(pq)
assert.Equal(t, "hello8", item.(*Item).Value.(string))
assert.Equal(t, 3+1, pq.PrioritySum())
item = heap.Pop(pq)
assert.Equal(t, "hello3", item.(*Item).Value.(string))
item = heap.Pop(pq)
assert.Equal(t, "hello1", item.(*Item).Value.(string))
assert.Equal(t, 0, pq.Len())
}
func addMinPathLeft(graph *m.Graph) {
dp := &m.DijkstraPrio{}
heap.Init(dp)
visited := make(map[*m.Node]bool)
endNode := graph.EndNode()
endNode.SetMinPathLeft(0)
visited[endNode] = true
for _, edge := range endNode.ToEdges() {
node := edge.From()
node.SetMinPathLeft(edge.FastestTime())
heap.Push(dp, node)
}
if dp.Len() > 0 {
for node := heap.Pop(dp).(*m.Node); dp.Len() > 0; node = heap.Pop(dp).(*m.Node) {
visited[node] = true
for _, edge := range node.ToEdges() {
innerNode := edge.From()
if !visited[innerNode] {
innerNode.SetMinPathLeft(edge.FastestTime() + node.MinPathLeft())
heap.Push(dp, innerNode)
}
}
}
}
}
// ConsiderWeighted lets the sample inspect a new value with a positive given
// weight. A weight of one corresponds to the unweighted reservoir sampling
// algorithm. A nonpositive weight will lead to the item being rejected without
// having been observed. To avoid numerical instabilities, it is advisable to
// stay away from zero and infinity, or more generally from regions in which
// computing x**1/weight may be ill-behaved.
func (rs *WeightedReservoirSample) ConsiderWeighted(value interface{}, weight float64) {
if weight <= 0 {
glog.Warningf("reservoir sample received non-positive weight %f", weight)
return
}
h := rs.Heap
wv := WeightedValue{
Value: value,
key: rs.makeKey(weight),
}
if h.Len() < rs.size {
heap.Push(h, wv)
if rs.threshold == 0 || wv.key < rs.threshold {
rs.threshold = wv.key
}
return
}
if wv.key > rs.threshold {
// Remove the element with threshold key.
heap.Pop(h)
// Add in the new element (which has a higher key).
heap.Push(h, wv)
// Update the threshold to reflect the new threshold.
twv := heap.Pop(h).(WeightedValue)
rs.threshold = twv.key
heap.Push(h, twv)
}
}
func (x *TopApps) Mark(ApplicationId string, z time.Time) {
t := z.Unix()
x.Lock()
defer x.Unlock()
y := x.m[ApplicationId]
if y != nil {
z1 := heap.Remove(&x.t, y.ti).(*topAppsEntry)
if z1 != y {
panic("z1 != y")
}
z2 := heap.Remove(&x.n, y.ni).(*topAppsEntry)
if z2 != y {
panic("z2 != y")
}
} else {
// New entry
y = &topAppsEntry{ApplicationId: ApplicationId}
x.m[ApplicationId] = y
}
y.Mark(t)
heap.Push(&x.t, y)
heap.Push(&x.n, y)
}
// This example inserts some items into a PriorityQueue, manipulates an item,
// and then removes the items in priority order.
func Example_priorityQueue() {
// Some items and their priorities.
items := map[string]int{
"banana": 3, "apple": 2, "pear": 4,
}
// Create a priority queue and put the items in it.
pq := &PriorityQueue{}
heap.Init(pq)
for value, priority := range items {
item := &Item{
value: value,
priority: priority,
}
heap.Push(pq, item)
}
// Insert a new item and then modify its priority.
item := &Item{
value: "orange",
priority: 1,
}
heap.Push(pq, item)
pq.update(item, item.value, 5)
// Take the items out; they arrive in decreasing priority order.
for pq.Len() > 0 {
item := heap.Pop(pq).(*Item)
fmt.Printf("%.2d:%s ", item.priority, item.value)
}
// Output:
// 05:orange 04:pear 03:banana 02:apple
}
/*
Add a value with a timestamp to the SlidingHyperLogLog.
*/
func (shll *SlidingHyperLogLog) Add(timestamp uint32, value []byte) {
R, j := shll.getPosAndValue(value)
Rmax := uint8(0)
tmax := int(0)
heap.Push(shll.lpfm[j], tR{timestamp, R})
tmp2 := make([]tR, shll.lpfm[j].Len(), shll.lpfm[j].Len())
for shll.lpfm[j].Len() > 0 {
item := heap.Pop(shll.lpfm[j]).(tR)
tmp2[shll.lpfm[j].Len()] = item
}
for _, value := range tmp2 {
t := value.t
R := value.R
if tmax == 0 {
tmax = int(t)
}
if int(t) < (tmax - int(shll.window)) {
break
}
if R > Rmax {
Rmax = R
heap.Push(shll.lpfm[j], value)
}
if uint(shll.lpfm[j].Len()) == shll.n {
break
}
}
}
func findMin(n, k, a, b, c, r int) int {
m := []int{a}
for i := 1; i < k; i++ {
m = append(m, (b*m[i-1]+c)%r)
}
o := make([]int, k)
copy(o, m)
sort.Ints(o)
h := &intHeap{}
heap.Init(h)
var x, y int
for i := 0; i <= k; {
if y >= k || x < o[y] {
heap.Push(h, x)
x++
i++
} else {
if x == o[y] {
x++
}
y++
}
}
for len(m)+1 < n {
p := heap.Pop(h).(int)
if h.notyet(m[len(m)-k]) && notagain(m[len(m)-k+1:len(m)], m[len(m)-k]) {
heap.Push(h, m[len(m)-k])
}
m = append(m, p)
}
return heap.Pop(h).(int)
}
