package org.cloudbus.cloudsim.container.schedulers;
import org.cloudbus.cloudsim.Cloudlet;
import org.cloudbus.cloudsim.Consts;
import org.cloudbus.cloudsim.ResCloudlet;
import org.cloudbus.cloudsim.core.CloudSim;
import java.util.ArrayList;
import java.util.List;
/**
* Created by sareh on 10/07/15.
*/
public class ContainerCloudletSchedulerTimeShared extends ContainerCloudletScheduler {
/**
* The current cp us.
*/
protected int currentCPUs;
/**
* Creates a new ContainerCloudletSchedulerTimeShared object. This method must be invoked before starting
* the actual simulation.
*
* @pre $none
* @post $none
*/
public ContainerCloudletSchedulerTimeShared() {
super();
currentCPUs = 0;
}
/**
* Updates the processing of cloudlets running under management of this scheduler.
*
* @param currentTime current simulation time
* @param mipsShare array with MIPS share of each processor available to the scheduler
* @return time predicted completion time of the earliest finishing cloudlet, or 0 if there is
* no next events
* @pre currentTime >= 0
* @post $none
*/
@Override
public double updateContainerProcessing(double currentTime, List<Double> mipsShare) {
setCurrentMipsShare(mipsShare);
double timeSpam = currentTime - getPreviousTime();
for (ResCloudlet rcl : getCloudletExecList()) {
rcl.updateCloudletFinishedSoFar((long) (getCapacity(mipsShare) * timeSpam * rcl.getNumberOfPes() * Consts.MILLION));
}
if (getCloudletExecList().size() == 0) {
setPreviousTime(currentTime);
return 0.0;
}
// check finished cloudlets
double nextEvent = Double.MAX_VALUE;
List<ResCloudlet> toRemove = new ArrayList<>();
for (ResCloudlet rcl : getCloudletExecList()) {
long remainingLength = rcl.getRemainingCloudletLength();
if (remainingLength == 0) {// finished: remove from the list
toRemove.add(rcl);
cloudletFinish(rcl);
}
}
getCloudletExecList().removeAll(toRemove);
// estimate finish time of cloudlets
for (ResCloudlet rcl : getCloudletExecList()) {
double estimatedFinishTime = currentTime
+ (rcl.getRemainingCloudletLength() / (getCapacity(mipsShare) * rcl.getNumberOfPes()));
if (estimatedFinishTime - currentTime < CloudSim.getMinTimeBetweenEvents()) {
estimatedFinishTime = currentTime + CloudSim.getMinTimeBetweenEvents();
}
if (estimatedFinishTime < nextEvent) {
nextEvent = estimatedFinishTime;
}
}
toRemove.clear();
setPreviousTime(currentTime);
return nextEvent;
}
/**
* Gets the capacity.
*
* @param mipsShare the mips share
* @return the capacity
*/
protected double getCapacity(List<Double> mipsShare) {
double capacity = 0.0;
int cpus = 0;
for (Double mips : mipsShare) {
capacity += mips;
if (mips > 0.0) {
cpus++;
}
}
currentCPUs = cpus;
int pesInUse = 0;
for (ResCloudlet rcl : getCloudletExecList()) {
pesInUse += rcl.getNumberOfPes();
}
if (pesInUse > currentCPUs) {
capacity /= pesInUse;
} else {
capacity /= currentCPUs;
}
return capacity;
}
/**
* Cancels execution of a cloudlet.
*
* @param cloudletId ID of the cloudlet being cancealed
* @return the canceled cloudlet, $null if not found
* @pre $none
* @post $none
*/
@Override
public Cloudlet cloudletCancel(int cloudletId) {
boolean found = false;
int position = 0;
// First, looks in the finished queue
found = false;
for (ResCloudlet rcl : getCloudletFinishedList()) {
if (rcl.getCloudletId() == cloudletId) {
found = true;
break;
}
position++;
}
if (found) {
return getCloudletFinishedList().remove(position).getCloudlet();
}
// Then searches in the exec list
position = 0;
for (ResCloudlet rcl : getCloudletExecList()) {
if (rcl.getCloudletId() == cloudletId) {
found = true;
break;
}
position++;
}
if (found) {
ResCloudlet rcl = getCloudletExecList().remove(position);
if (rcl.getRemainingCloudletLength() == 0) {
cloudletFinish(rcl);
} else {
rcl.setCloudletStatus(Cloudlet.CANCELED);
}
return rcl.getCloudlet();
}
// Now, looks in the paused queue
found = false;
position = 0;
for (ResCloudlet rcl : getCloudletPausedList()) {
if (rcl.getCloudletId() == cloudletId) {
found = true;
rcl.setCloudletStatus(Cloudlet.CANCELED);
break;
}
position++;
}
if (found) {
return getCloudletPausedList().remove(position).getCloudlet();
}
return null;
}
/**
* Pauses execution of a cloudlet.
*
* @param cloudletId ID of the cloudlet being paused
* @return $true if cloudlet paused, $false otherwise
* @pre $none
* @post $none
*/
@Override
public boolean cloudletPause(int cloudletId) {
boolean found = false;
int position = 0;
for (ResCloudlet rcl : getCloudletExecList()) {
if (rcl.getCloudletId() == cloudletId) {
found = true;
break;
}
position++;
}
if (found) {
// remove cloudlet from the exec list and put it in the paused list
ResCloudlet rcl = getCloudletExecList().remove(position);
if (rcl.getRemainingCloudletLength() == 0) {
cloudletFinish(rcl);
} else {
rcl.setCloudletStatus(Cloudlet.PAUSED);
getCloudletPausedList().add(rcl);
}
return true;
}
return false;
}
/**
* Processes a finished cloudlet.
*
* @param rcl finished cloudlet
* @pre rgl != $null
* @post $none
*/
@Override
public void cloudletFinish(ResCloudlet rcl) {
rcl.setCloudletStatus(Cloudlet.SUCCESS);
rcl.finalizeCloudlet();
getCloudletFinishedList().add(rcl);
}
/**
* Resumes execution of a paused cloudlet.
*
* @param cloudletId ID of the cloudlet being resumed
* @return expected finish time of the cloudlet, 0.0 if queued
* @pre $none
* @post $none
*/
@Override
public double cloudletResume(int cloudletId) {
boolean found = false;
int position = 0;
// look for the cloudlet in the paused list
for (ResCloudlet rcl : getCloudletPausedList()) {
if (rcl.getCloudletId() == cloudletId) {
found = true;
break;
}
position++;
}
if (found) {
ResCloudlet rgl = getCloudletPausedList().remove(position);
rgl.setCloudletStatus(Cloudlet.INEXEC);
getCloudletExecList().add(rgl);
// calculate the expected time for cloudlet completion
// first: how many PEs do we have?
double remainingLength = rgl.getRemainingCloudletLength();
double estimatedFinishTime = CloudSim.clock()
+ (remainingLength / (getCapacity(getCurrentMipsShare()) * rgl.getNumberOfPes()));
return estimatedFinishTime;
}
return 0.0;
}
/**
* Receives an cloudlet to be executed in the VM managed by this scheduler.
*
* @param cloudlet the submited cloudlet
* @param fileTransferTime time required to move the required files from the SAN to the VM
* @return expected finish time of this cloudlet
* @pre gl != null
* @post $none
*/
@Override
public double cloudletSubmit(Cloudlet cloudlet, double fileTransferTime) {
ResCloudlet rcl = new ResCloudlet(cloudlet);
rcl.setCloudletStatus(Cloudlet.INEXEC);
for (int i = 0; i < cloudlet.getNumberOfPes(); i++) {
rcl.setMachineAndPeId(0, i);
}
getCloudletExecList().add(rcl);
// use the current capacity to estimate the extra amount of
// time to file transferring. It must be added to the cloudlet length
double extraSize = getCapacity(getCurrentMipsShare()) * fileTransferTime;
long length = (long) (cloudlet.getCloudletLength() + extraSize);
cloudlet.setCloudletLength(length);
return cloudlet.getCloudletLength() / getCapacity(getCurrentMipsShare());
}
/*
* (non-Javadoc)
* @see cloudsim.CloudletScheduler#cloudletSubmit(cloudsim.Cloudlet)
*/
@Override
public double cloudletSubmit(Cloudlet cloudlet) {
return cloudletSubmit(cloudlet, 0.0);
}
/**
* Gets the status of a cloudlet.
*
* @param cloudletId ID of the cloudlet
* @return status of the cloudlet, -1 if cloudlet not found
* @pre $none
* @post $none
*/
@Override
public int getCloudletStatus(int cloudletId) {
for (ResCloudlet rcl : getCloudletExecList()) {
if (rcl.getCloudletId() == cloudletId) {
return rcl.getCloudletStatus();
}
}
for (ResCloudlet rcl : getCloudletPausedList()) {
if (rcl.getCloudletId() == cloudletId) {
return rcl.getCloudletStatus();
}
}
return -1;
}
/**
* Get utilization created by all cloudlets.
*
* @param time the time
* @return total utilization
*/
@Override
public double getTotalUtilizationOfCpu(double time) {
double totalUtilization = 0;
for (ResCloudlet gl : getCloudletExecList()) {
totalUtilization += gl.getCloudlet().getUtilizationOfCpu(time);
}
return totalUtilization;
}
/**
* Informs about completion of some cloudlet in the VM managed by this scheduler.
*
* @return $true if there is at least one finished cloudlet; $false otherwise
* @pre $none
* @post $none
*/
@Override
public boolean isFinishedCloudlets() {
return getCloudletFinishedList().size() > 0;
}
/**
* Returns the next cloudlet in the finished list, $null if this list is empty.
*
* @return a finished cloudlet
* @pre $none
* @post $none
*/
@Override
public Cloudlet getNextFinishedCloudlet() {
if (getCloudletFinishedList().size() > 0) {
return getCloudletFinishedList().remove(0).getCloudlet();
}
return null;
}
/**
* Returns the number of cloudlets runnning in the virtual machine.
*
* @return number of cloudlets runnning
* @pre $none
* @post $none
*/
@Override
public int runningCloudlets() {
return getCloudletExecList().size();
}
/**
* Returns one cloudlet to migrate to another vm.
*
* @return one running cloudlet
* @pre $none
* @post $none
*/
@Override
public Cloudlet migrateCloudlet() {
ResCloudlet rgl = getCloudletExecList().remove(0);
rgl.finalizeCloudlet();
return rgl.getCloudlet();
}
/*
* (non-Javadoc)
* @see cloudsim.CloudletScheduler#getCurrentRequestedMips()
*/
@Override
public List<Double> getCurrentRequestedMips() {
return new ArrayList<>();
}
/*
* (non-Javadoc)
* @see cloudsim.CloudletScheduler#getTotalCurrentAvailableMipsForCloudlet(cloudsim.ResCloudlet,
* java.util.List)
*/
@Override
public double getTotalCurrentAvailableMipsForCloudlet(ResCloudlet rcl, List<Double> mipsShare) {
return getCapacity(getCurrentMipsShare());
}
/*
* (non-Javadoc)
* @see cloudsim.CloudletScheduler#getTotalCurrentAllocatedMipsForCloudlet(cloudsim.ResCloudlet,
* double)
*/
@Override
public double getTotalCurrentAllocatedMipsForCloudlet(ResCloudlet rcl, double time) {
return 0.0;
}
/*
* (non-Javadoc)
* @see cloudsim.CloudletScheduler#getTotalCurrentRequestedMipsForCloudlet(cloudsim.ResCloudlet,
* double)
*/
@Override
public double getTotalCurrentRequestedMipsForCloudlet(ResCloudlet rcl, double time) {
// TODO Auto-generated method stub
return 0.0;
}
@Override
public double getCurrentRequestedUtilizationOfRam() {
double ram = 0;
for (ResCloudlet cloudlet : cloudletExecList) {
ram += cloudlet.getCloudlet().getUtilizationOfRam(CloudSim.clock());
}
return ram;
}
@Override
public double getCurrentRequestedUtilizationOfBw() {
double bw = 0;
for (ResCloudlet cloudlet : cloudletExecList) {
bw += cloudlet.getCloudlet().getUtilizationOfBw(CloudSim.clock());
}
return bw;
}
}