func applyBloodBankDiscipline(sys *BloodBankSystem, queue *qsim.Queue, trashProcessor, transfusionProcessor *qsim.Processor) {
// Assigns the youngest unit to the processor
assigner := func(cbProc *qsim.Processor, cbJob *qsim.Job) {
var i, iYoungest int
var j *qsim.Job
if queue.Length() == 0 {
qsim.D("Aborted after Job", cbJob)
if sys.statsStarted {
sys.NumAborted++
}
// Give the processor a dummy job until the next transfusion
j = qsim.NewJob(-1)
cbProc.Start(j)
return
}
for i, j = range queue.Jobs {
if j.ArrTime > queue.Jobs[iYoungest].ArrTime {
iYoungest = i
}
}
j = queue.Jobs[iYoungest]
queue.Remove(j)
cbProc.Start(j)
qsim.D("Started Job", j)
}
transfusionProcessor.AfterFinish(assigner)
}
// Occupancy returns the total number of Jobs in the system.
func (sys *PortaPottySystem) Occupancy() (occ int) {
var p *qsim.Processor
var q *qsim.Queue
for _, p = range sys.processors {
if !p.IsIdle() {
occ++
}
}
for _, q = range sys.queues {
occ += q.Length()
}
return
}
// strategicAssignment returns an Assignment corresponding to the following
// wait-time reduction strategy:
//
// – Look for the shortest queue first. If there are multiple queues of the
// same short length, then
// – Pick the queue with the highest male-to-female ratio. If there are
// multiple short queues with the same male-to-female ratio, then
// – Pick a random one.
func (sys *PortaPottySystem) strategicAssignment() *qsim.Assignment {
var p *qsim.Processor
var q *qsim.Queue
var shortQueues, dudefulQueues []*qsim.Queue
var j *qsim.Job
var shortestLen, maleCount, highestMaleCount int
shortestLen = 9999
// If there's an idle porta-potty, obviously just walk in
for _, p = range sys.processors {
if p.IsIdle() {
return nil
}
}
for _, q = range sys.queues {
if q.Length() < shortestLen {
shortQueues = []*qsim.Queue{q}
shortestLen = q.Length()
} else if q.Length() == shortestLen {
shortQueues = append(shortQueues, q)
}
}
for _, q = range shortQueues {
maleCount = 0
for _, j = range q.Jobs {
if j.StrAttrs["sex"] == "male" {
maleCount++
}
}
if maleCount > highestMaleCount {
dudefulQueues = []*qsim.Queue{q}
highestMaleCount = maleCount
} else if maleCount == highestMaleCount {
dudefulQueues = append(dudefulQueues, q)
}
}
return &qsim.Assignment{
Type: "Queue",
Queue: dudefulQueues[rand.Intn(len(dudefulQueues))],
}
}
