CloudSim源代码学习SimEntityjava.docx
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CloudSim源代码学习SimEntityjava
SimEntity.java
/*
该类表示一个模拟实体。
实体处理事件并且发送事件到其他实体。
*Title:
CloudSimToolkit
*Description:
CloudSim（CloudSimulation）ToolkitforModelingandSimulationofClouds
*Licence:
GPL-/gpl.html
*
*Copyright（c）2009-2010,TheUniversityofMelbourne,Australia
*/
package;
import;
import;
import;
/**
*Thisclassrepresentsasimulationentity.Anentityhandleseventsandcan
*sendeventstootherentities.Whenthisclassisextended,thereareafew
*methodsthatneedtobeimplemented:
*
*
- {@link#startEntity（）}isinvokedbythe{@linkSimulation}classwhen
*thesimulationisstarted.Thismethodshouldberesponsibleforstartingthe
*entityup.
*
- {@link#processEvent（SimEvent）}isinvokedbythe{@linkSimulation}
*classwheneverthereisaneventinthedeferredqueue,whichneedstobe
*processedbytheentity.
*
- {@link#shutdownEntity（）}isinvokedbythe{@linkSimulation}beforethe
*simulationfinishes.Ifyouwanttosavedatainlogfilesthisisthemethod
*inwhichthecorrespondingcodewouldbeplaced.
*
*
*@authorMarcosDiasdeAssuncao
*@sinceCloudSimToolkit1.0
*/
publicabstractclassSimEntityimplementsCloneable{
/**Thename.*/
privateStringname;
/**Theid.*/
privateintid;
/**Thebufferforselectedincomingevents.*/
privateSimEventevbuf;
/**Theentity'scurrentstate.*/
privateintstate;
/**
*Createsanewentity.
*
*@paramnamethenametobeassociatedwiththisentity
*/
publicSimEntity（Stringname）{
if（name.indexOf（""）!
=-1）{
thrownewIllegalArgumentException（
"Entitynamescan'tcontainspaces."）;
}
this.name=name;
id=-1;
state=RUNNABLE;
CloudSim.addEntity（this）;
}
/**
*Getthenameofthisentity.
*
*@returnTheentity'sname
*/
publicStringgetName（）{
returnname;
}
/**
*Gettheuniqueidnumberassignedtothisentity.
*
*@returnTheidnumber
*/
publicintgetId（）{
returnid;
}
//Theschedulefunctions
/**
*Sendaneventtoanotherentitybyidnumber,withdata.Notethatthe
*tag9999isreserved.
*
*@paramdestTheuniqueidnumberofthedestinationentity
*@paramdelayHowlongfromthecurrentsimulationtimetheevent
*shouldbesent
*@paramtagAnuser-definednumberrepresentingthetypeofevent.
*@paramdataThedatatobesentwiththeevent.
*/
publicvoidschedule（intdest,doubledelay,inttag,Objectdata）{
if（!
CloudSim.running（））{
return;
}
CloudSim.send（id,dest,delay,tag,data）;
}
/**
*Sendaneventtoanotherentitybyidnumberandwithnodata.
*Notethatthetag9999isreserved.
*
*@paramdestTheuniqueidnumberofthedestinationentity
*@paramdelayHowlongfromthecurrentsimulationtimetheevent
*shouldbesent
*@paramtagAnuser-definednumberrepresentingthetypeofevent.
*/
publicvoidschedule（intdest,doubledelay,inttag）{
schedule（dest,delay,tag,null）;
}
/**
*Sendaneventtoanotherentitythroughaportwithagivenname,with
*data.Notethatthetag9999isreserved.
*
*@paramdestThenameoftheporttosendtheeventthrough
*@paramdelayHowlongfromthecurrentsimulationtimetheevent
*shouldbesent
*@paramtagAnuser-definednumberrepresentingthetypeofevent.
*@paramdataThedatatobesentwiththeevent.
*/
publicvoidschedule（Stringdest,doubledelay,inttag,Objectdata）{
schedule（CloudSim.getEntityId（dest）,delay,tag,data）;
}
/**
*Sendaneventtoanotherentitythroughaportwithagivenname,with
*nodata.Notethatthetag9999isreserved.
*
*@paramdestThenameoftheporttosendtheeventthrough
*@paramdelayHowlongfromthecurrentsimulationtimetheeventshouldbe
*sent
*@paramtagAnuser-definednumberrepresentingthetypeofevent.
*/
publicvoidschedule（Stringdest,doubledelay,inttag）{
schedule（dest,delay,tag,null）;
}
/**
*Sendaneventtoanotherentitybyidnumber,withdata.Notethatthe
*tag9999isreserved.
*
*@paramdestTheuniqueidnumberofthedestinationentity
*@paramtagAnuser-definednumberrepresentingthetypeofevent.
*@paramdataThedatatobesentwiththeevent.
*/
publicvoidscheduleNow（intdest,inttag,Objectdata）{
schedule（dest,0,tag,data）;
}
/**
*Sendaneventtoanotherentitybyidnumberandwithnodata.
*Notethatthetag9999isreserved.
*
*@paramdestTheuniqueidnumberofthedestinationentity
*@paramtagAnuser-definednumberrepresentingthetypeofevent.
*/
publicvoidscheduleNow（intdest,inttag）{
schedule（dest,0,tag,null）;
}
/**
*Sendaneventto
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