理解unix进程(英)

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1、DownloadfromWow!eBookWorkingwithUnixProcessesCopyright©2012JesseStorimer.Allrightsreserved.Thisebookislicensedforindividualuseonly.Thisisaone-manoperation,pleaserespectthetimeandeffortthatwentintothisbook.Ifyoucamebyafreecopyandfindituseful,youcancompensatemeat

2、http://workingwithunixprocesses.com.AcknowledgementsAbigthankyoutoafewawesomefolkswhoreadearlydraftsofthebook,helpedmeunderstandhowtomarketthisthing,gavemeapushwhenIneededit,andwereall-aroundextremelyhelpful:SamStorry,JesseKaunisviita,andMarc-AndréCournoyer.Ihavetoexpressmyimmen

3、segratitudetowardsmywifeanddaughterfornotonlysupportingtheerraticschedulethatmadethisbookpossible,butalsoalwaysbeingtheretoprovideasecondopinion.WithoutyourloveandsupportIcouldn'thavedonethis.Youmakeitallworthwhile.2DownloadfromWow!eBookContents9Introduction23E

4、verythingisaFile11Primer23DescriptorsRepresentResources11WhyCare?27StandardStreams12HarnessthePower!28IntheRealWorld12Overview28SystemCalls13SystemCalls29ProcessesHaveResourceLimits14Nomenclature,wtf(2)29FindingtheLimits16Processes:TheAtomsofUnix30SoftLimitsvs.HardLimits18Proces

5、sesHaveIDs31BumpingtheSoftLimit18CrossReferencing32ExceedingtheLimit19IntheRealWorld32OtherResources20SystemCalls33IntheRealWorld21ProcessesHaveParents34SystemCalls21CrossReferencing35ProcessesHaveanEnvironment22IntheRealWorld36It'sahash,right?22SystemCalls37IntheRealWorld23Proc

6、essesHaveFileDescriptors37SystemCallsDownloadfromWow!eBook38ProcessesHaveArguments58MRI/RBXusers38It'sanArray!60ProcessesCanWait39IntheRealWorld61Babysitting40ProcessesHaveNames62Process.waitandCousins40NamingProcesses63CommunicatingwithProcess.wait242IntheReal

7、World65WaitingforSpecificChildren43ProcessesHaveExitCodes66RaceConditions43HowtoExitaProcess68IntheRealWorld47ProcessesCanFork68SystemCalls47Usethefork(2),Luke69ZombieProcesses51MulticoreProgramming?69GoodThingsCometoThoseWhowait(2)51UsingaBlock71WhatDoZombiesLookLike?52IntheRea

8、lWorld71InTheRealWorld52SystemCalls72SystemCall