CloudSim源代码学习之Vm.doc

package org.cloudbus.cloudsim;import java.util.ArrayList;/This class provides methods to manipulate the size of the array that is used internally to store the list.import java.util.List;/*【虚拟机】 * Vm represents a VM: 【it runs inside a Host, sharing hostList * with other VMs. It processes cloudlets. 】This processing happens according * to a policy, defined by the CloudletScheduler. Each VM has a owner（每个虚拟机有一个所有者）, which can * submit cloudlets to the VM to be executed * * authorRodrigo N. Calheiros * authorAnton Beloglazov * sinceCloudSim Toolkit 1.0 */public class Vm /* The id. ID号*/private int id;/* The user id. 用户编号*/private int userId;private String uid;/* The size. 大小 */private long size;/* The MIPS.处理速度MIPS */private double mips;/* The PEs number. PE数*/private int pesNumber;/* The ram. 内存*/private int ram;/* The bw.带宽 */private long bw;/* The vmm. 虚拟机管理程序*/private String vmm;/* The Cloudlet scheduler. 云任务调度程序*/private CloudletScheduler cloudletScheduler;/* The host.主机 */private Host host;/* In migration flag. 迁移标志*/private boolean inMigration;/* The current allocated size.当前分配大小 */private long currentAllocatedSize;/* The current allocated ram. 当前分配内存*/private int currentAllocatedRam;/* The current allocated bw. 当前分配带宽*/private long currentAllocatedBw;/* The current allocated mips. 当前分配mips*/private List currentAllocatedMips;/* The recently created. 最近创建*/private boolean recentlyCreated;/*【虚拟机特征对象】 * Creates a new VMCharacteristics object. * * param id unique ID of the VM * param userId ID of the VMs owner * param size amount of storage * param ram amount of ram * param bw amount of bandwidth * param pesNumber amount of CPUs CPU总和 * param vmm virtual machine monitor 虚拟机监控器 * param cloudletScheduler cloudletScheduler policy for cloudlets云任务调度协议 * param priority the priority 优先权 * param mips the mips * * pre id = 0 * pre userId = 0 * pre size 0 * pre ram 0 * pre bw 0 * pre cpus 0 * pre priority = 0 * pre cloudletScheduler != null * post $none */public Vm(int id, int userId, double mips, int pesNumber, int ram, long bw, long size, String vmm, CloudletScheduler cloudletScheduler) setId(id);setUserId(userId);setUid(getUid(userId, id);setMips(mips);setPesNumber(pesNumber);setRam(ram);setBw(bw);setSize(size);setVmm(vmm);setCloudletScheduler(cloudletScheduler);setInMigration(false);setRecentlyCreated(true);setCurrentAllocatedBw(0);setCurrentAllocatedMips(null);/怎么是nullsetCurrentAllocatedRam(0);setCurrentAllocatedSize(0);/*【更新运行在虚拟机上云任务】 * Updates the processing of cloudlets running on this VM. * * param currentTime current simulation time * param mipsShare array with MIPS share of each Pe available to the scheduler * * return time predicted completion time【预测完成时间】 of the earliest finishing cloudlet, or 0 * if there is no next events * * pre currentTime = 0 * post $none */public double updateVmProcessing(double currentTime, List mipsShare) if (mipsShare != null) return getCloudletScheduler().updateVmProcessing(currentTime, mipsShare);return 0.0;/*当前请求的MIPS * Gets the current requested mips. * * return the current requested mips */public List getCurrentRequestedMips() List currentRequestedMips = getCloudletScheduler().getCurrentRequestedMips();if (isRecentlyCreated() /新创建虚拟机boolean mipsIsNull = true;for (double mips : currentRequestedMips) if (mips 0.0) mipsIsNull = false;setRecentlyCreated(false);break;/if (mipsIsNull & isRecentlyCreated() if (mipsIsNull) currentRequestedMips = new ArrayList();for (int i = 0; i 0 * post $none */public void setRam(int ram) this.ram = ram;/*总带宽 * Gets the amount of bandwidth. * * return amount of bandwidth * * pre $none * post $none */public long getBw() return bw;/*设置带宽 * Sets the amount of bandwidth. * * param bw new amount of bandwidth * * pre bw 0 * post $none */public void setBw(long bw) this.bw = bw;/*取存储 * Gets the amount of storage. * * return amount of storage * * pre $none * post $none */public long getSize() return size;/*设置存储 * Sets the amount of storage. * * param size new amount of storage * * pre size 0 * post $none */public void setSize(long size) this.size = size;/*取VMM * Gets the VMM. * * return VMM * * pre $none * post $none */public String getVmm()return vmm;/*设置VMM * Sets the VMM. * * param vmm the new VMM */protected void setVmm(String vmm) this.vmm = vmm;/*设置主机 * Sets the host that runs this VM. * * param host Host running the VM * * pre host != $null * post $none */public void setHost(Host host)this.host = host;/*获取主机 * Gets the host. * * return the host */public Host getHost() return host;/*虚拟机调度程序 * Gets the vm scheduler. * * return the vm scheduler */public CloudletScheduler getCloudletScheduler() return cloudletScheduler;/*设置虚拟机调度程序 * Sets the vm scheduler. * * param cloudletScheduler the new vm scheduler */protected void setCloudletScheduler(CloudletScheduler cloudletScheduler) this.cloudletScheduler = cloudletScheduler;/*是否迁移 * Checks if is in migration. * * return true, if is in migration */public boolean isInMigration() return inMigration;/* * Sets the in migration. * * param inMigration the new in migration */public void setInMigration(boolean inMigration) this.inMigration = inMigration;/*当前分配大小 * Gets the current allocated size. * * return the current allocated size */public long getCurrentAllocatedSize() return currentAllocatedSize;/* * Sets the current allocated size. * * param currentAllocatedSize the new current allocated size */protected void setCurrentAllocatedSize(long currentAllocatedSize) this.currentAllocatedSize = currentAllocatedSize;/*取当前分配的内存 * Gets the current allocated ram. * * return the current allocated ram */public int getCurrentAllocatedRam() return currentAllocatedRam;/*设置当前分配的内存 * Sets the current allocated ram. * * param currentAllocatedRam the new current allocated ram */public void setCurrentAllocatedRam(int currentAllocatedRam) this.currentAllocatedRam = currentAllocatedRam;/*取当前分配的带宽 * Gets the current allocated bw. * * return the current allocated bw */public long getCurrentAllocatedBw() return currentAllocatedBw;/*设置当前分配的带宽 * Sets the current allocated bw. * * param currentAllocatedBw the new current allocated bw */public void setCurrentAllocatedBw(long currentAllocatedBw) this.currentAllocatedBw = currentAllocatedBw;/*取当前分配的M