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校长为学校学生道路交通安全工作第一责任人,负责校(园)内的道路交通安全管理工作和学生出行的道路交通安全教育,以及学生春(秋)游和其他教育教学活动的道路交通安全管理工作centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymmetricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,eachmeasuringrelativechangesinvalueshouldbelessthan0.02mm.6.4.5.4couplingreamedandpairedboltreamingdiereamer,adjustablereamers,boringmill,inseveralways.6.4.5.4.1Generalrequirementsbeforereamingorboring,计算机科学专业课程设计任务书学生姓名专业班级学号题目动态分区分配方式的模拟1课题性质其它课题来源自拟课题指导教师马宏琳同组姓名无主要内容1)用C语言实现采用首次适应算法的动态分区分配过程alloc()和回收过程free()。其中,空闲分区通过空闲分区链表来管理,在进行内存分配时,系统优先使用空闲区低端的空间。2)假设初始状态如下,可用的内存空间为640KB,并有下列的请求序列;作业1申请130KB;作业2申请60KB;作业3申请100KB;作业2释放60KB;作业4申请200KB;作业3释放100KB;作业1释放130KB;作业5申请140KB;作业6申请60KB;作业7申请50KB;作业6释放60KB请采用首次适应算法进行内存块的分配和回收,同时显示内存块分配和回收后空闲内存分区链的情况。任务要求了解动态分区分配中使用的数据结构和分配算法,并进一步加深对动态分区存储管理方式及其实现过程的理解。参考文献任满杰等《操作系统原理实用教程》电子工业出版社2006汤子瀛《计算机操作系统》(修订版)西安电子科技大学出版社2001张尧学史美林《计算机操作系统教程》实验指导清华大学出版社2000罗宇等《操作系统课程设计》机械工业出版社2005校长为学校学生道路交通安全工作第一责任人,负责校(园)内的道路交通安全管理工作和学生出行的道路交通安全教育,以及学生春(秋)游和其他教育教学活动的道路交通安全管理工作centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymmetricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,eachmeasuringrelativechangesinvalueshouldbelessthan0.02mm.6.4.5.4couplingreamedandpairedboltreamingdiereamer,adjustablereamers,boringmill,inseveralways.6.4.5.4.1Generalrequirementsbeforereamingorboring,1审查意见指导教师签字:教研室主任签字:年月日1需求分析了解动态分区分配中使用的数据结构和分配算法,并进一步加深对动态分区存储管理方式及其实现过程的理解。采用首次适应算法的动态分区分配过程alloc()和回收过程free()。空闲分区通过空闲分区链表来管理,在进行内存分配时,系统优先使用空闲区低端的空间,即每次分配内存空间是总是从低址部分开始进行循环,找到第一个合适的空间,便按作业所需分配的大小分配给作业。作业完成时,需要释放作业所占空间,此时要考虑到四种情况:(1)回收区与插入点的前一个空闲分区相邻接。此时将二者合并,修改前一分区的大小。(2)回收区与插入点的后一空闲分区相邻接,将二者合并,用回收区的首址作为新空闲区的首址。(3)回收区同时与插入点的前后两个空闲分区相邻接,三者合并,使用前一空闲分区的表项和首址。(4)回收区单独存在。由于该算法的实现相对简单,仅由我一人完成。2概要设计typedefstructfreearea{}ElemType;定义一个空闲区说明表结构,每申请一个作业,改作业便具有此结构体typedefstructDuLNode{}DuLNode,*DuLinkList;定义一个双向链表StatusInitblock(){}开创带头结点的内存空间链表,通过双向链表把
本文标题:动态分区分配方式首次适应算法
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