C#多线程学习多线程的相关概念

C#多线程学习多线程的相关概念

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时间:2023-03-17

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C#ḄᐵᭆᒹḄᡠ"ᵨᑮḄᑁ&'()*஺,-.ᡠ/ᡂḄ஺Ḅ᡻234ᨵ67Ḅ8ᨵ9&ᘤ᪘ᢣ┐ஹ?ᦪᘤABCṹEᐳGḄᓽIJḄKL᡻J᪵ḄNᦪ஺ᢣᒹO᡻2ᓽᙠiKLJIJḄᩭ᡻IJḄSTUVᐕXᓫZ[\᡻Ḅᩭ]ᡂᔜ6ḄST஺Ḅ_ᜐaKLbcCPUḄᑭᵨ᳛஺ᙠfgAhḄ᎛CPUKLᐸḄ,IAhk᪵ᜧᜧbcmḄᦔ᳛஺ḄIᑭo☢aUᡠL◤⌕ᓰᵨᑁ&tᓰᵨᑁ&Utu◤⌕vwxᳮᡠL◤⌕CPUz{|;

1zᐳG)*ḄfgᵨᐳG)*Ḅ⚪uᑴᩖᨬK⌼ᡂBugaᩭC#Ḅᑴ஺mḕZ[GUI¡¢£ᳲḄ¥¦§¨ᨎᙢ«¬Ḅ®ᩭḄᡠᨵ4ᑴ¯ᨬ°ḄConsole.ReadLine஺m"⌶²ᩭL³´¨µ᡻¶Ḅ·¸஺S¹ᙠ᡻º»ᨵ¼஺½¾ᓺÀḄÁÂa//SystemThread.csusingSystem;usingSystem.Threading;namespaceThreadTest(classRunlt([STAThread]staticvoidMain(string[]args)(Thread.CurrentThread.Name="SystemThread”;஻ÄÅÆÇ“SystemThread"

2Console.WriteLine(Thread.CurrentThread.Name+'"Status:"+Thread.CurrentThread.ThreadState);Console.ReadLine();)))·¸᝞aSystemThread'sStatus:RunningᙠkÊᡃÌͶThreadÎḄ☟᝱ÑឋCurrentThreadÓÔmÅ᡻ḄᐸNameÑឋÕÖ"SystemThread",ᨬ°×·¸mḄÅØ᝱(ThreadState)„ᡠÙ☟᝱ÑឋkÎᡠᨵÀᡠÚᨵḄÑឋIxÛZ[m»kÎḄÜÂBÎḄ☟᝱Ñឋᙠᑁ&Ýᨵ஺Þ᧕ᳮCurrentThread☟᝱Ḅ——áᯠᨵJ&ᙠBᙠãäCPUÝ᡻ᐸ஺ᙠḄᜮæᡃÌ"ᵨm᝞çÇèzausingSystem;usingSystem.Threading;

3ᙠ.netframeworkclasslibraryᡠᨵéᑴêᵨᐵḄÎ4ëᙠSystem.ThreadingçÇèzḄ஺᝞ìÛíᙠÛḄêᵨ"ᵨfgᒹOkÎ஺ᡃÌͶᐸbîḄThreadÎᩭZ[ᑴThreadPoolÎᵨïxᳮðA஺(ò᜜×bîm᡻ô᣸ö┝zÍøAÜ▭⚪Ḅᑴ஺)ThreadÎᨵúºᐵû⌕Ḅoüýþ᝞FaStart()aÿSleep(int)☟᝱ᨚᢣḄᦪAbort()ᵨᩭSuspend()!ᡂḄ#$$ᢞ&'()*ឮ,Resume஺ឮ,.Suspend஺ᢞ&ḄḄ᡻0C#123(5)᝞89:;☢ᡃ>?@ᩭABᵨThreadCABDE◤GHᐭJᓽ*஺(ᐭJLM⍝OPQRIST)ᙠC#VᐭJWXThreadStartYᳮ(delegate)ᩭGHḄ[*'\ThreadStartᳮ]^_ᦪᢣ┐ᢣᔣ⌕᡻0Ḅ_ᦪcᵨThread.StartQ(?de᡻0ThreadStartᡠY⊤ᡈὅjᢣᔣḄ_ᦪ஺

4ᡭd[ḄVS.net,mBnᑴpqᵨL(ConsoleApplication),rᑏ!ᐰnᑴḄYṹvw//ThreadTest.csusingSystem;usingSystem.Threading;namespaceThreadTest{publicclassAlpha(publicvoidBeta()(while(true)(Console.WriteLine("Alpha.Betaisrunninginitsownthread.");)))publicclassSimple

5publicstaticintMain()Console.WriteLine("ThreadStart/Stop/JoinSample");AlphaoAlpha=newAlpha();file:஻PyABz᡻0AlphaCḄBeta()ThreadoThread=newThread(newThreadStart(oAlpha.Beta));oThread.Start();while(loThread.lsAlive)Thread.Sleep(1);oThread.Abort();oThread.Join();Console.WriteLine();Console.WriteLine("Alpha.Betahasfinished");try(Console.WriteLine("TrytorestarttheAlpha.Betathread");oThread.Start();)catch(ThreadStateException)

6Console.Write("ThreadStateExceptiontryingtorestartAlpha.Beta.");Console.WriteLine("Expectedsinceabortedthreadscannotberestarted.");Console.ReadLine();)return0;}))P|Lᒹ~CAlpha$10^^,ᙠAB011162(^Dᡃ>ᵨᢣᔣAlpha.Beta()ḄeᓄThreadstartYᳮ(delegate)ᡃ>ABḄoThreadcᵨoThread.Start஺D▭L0ḄWAlpha.Beta஺AlphaoAlpha=newAlpha();ThreadoThread=newThread(newThreadStart(oAlpha.Beta));oThread.Start();ᯠ(ᙠMain()_ᦪḄwhileVᡃ>ᵨ☟᝱Thread.Sleep஺1ms,P|DCPUᔣ᡻0oThread஺ᯠ(ᡃ>ᵨThread.Abort()oThread,(☢ḄoThread.Join(),Thread.Join()ᑮ

7□Thread஺[*'Thread.Join஺ᢣintḄᦪ^Ḅᨬ¢D஺z(ᡃ>ᵨThread.Start஺£moThread,¤W¥ᯠAbort஺¦ᩭḄ(§W*ឮ,Ḅᡠ'ᨬ(L¨©ªThreadStateException«஺Main()_ᦪᡠᨵW®▬°Main஺_ᦪᡠᙠḄḄMain()_ᦪWC#LḄᐭJ&e*'±z^஺᝞§ᡠᨵḄp²S*'³ᡠᨵḄ(p´µᩩ·஺ᡠᨵḄ¸ᯠᙠ¹ºW»0᡻0Ḅ¤Wᙠ¼º[!ᐰ*'½^#>ᙠ0᡻0஺Thread.ThreadState¾ឋP¾ឋY⊤0DÀ᝱ᙠÁḄÂÃ;ᨵÁḄÄᡃ>ᨵD᎛*'XÄḄᑨÇᩭÈÉLÊ஺Threadstate¾ឋḄËÄ᝞;AbortedÌAbortRequestedḄThread.Abort஺Ì.cᵨ¤W)Backgroundᙠ(p᡻0;ឋThread.IsBackgroundᨵᐵRunningÏᙠÏ0StoppedÌÐ.StopRequestedÏᙠ.⌕Ñ;

8SuspendedÌÐ.ᢞ&(ÓÀ᝱;*'XcᵨResume஺£m0)SuspendRequestedÏᙠ⌕Ñ.ᢞ&¤WᩭÔÕÖqUnstartedcᵨThread.Start஺deḄ0WaitSleepJoin×^cᵨWait(),Sleep()ᡈJoin()ᜐ°Ù┝À᝱☢GᑮBackgroundÀ᝱⊤vᙠ(p0²S(p0ḄᨵÛSᱯÝḄᙢᕖàᐸ(pâpEᨵãݲ?W(päåLḄ஺æçᡠᨵḄp(CLR(ᵨèé0᛻)´XcᵨëìíVḄ(pçḄAbort஺ᩭîïç஺ḄðᐜòzóôCPUDDCPUWᢥ᯿Ḅðᐜò÷øùḄ஺ᙠC#qᵨLVᵨᡝ*'È5ÁḄðᐜòᵫüᑮýᑖÝWHighest,AboveNormal,Normal,BelowNormal.Lowest,ᙠABD᝞§ᢣðᐜò²SÿThreadPriority.NormaUᢣᐜᡃᵨ᝞ṹ஻ᐜᨬmyThread.Priority=ThreadPriority.Lowest;Ḅᐜᡃ!᣸#$%&⌕Ḅᐜ᡻)*᝞%ᵨᡝḄ,-..஺C#012(4)67ὅ9:;ὅ

9=☢?@AᨵCDḄEFGHṹIHᐳKḄᓽ@A᡻)$MḄNᦪ஺PQRᩭḄT⚪VHWMX᡻)NᦪYZᦪ[Ḅ\]76^⚜ᧇḄabcdᡃefghPijkḄl6஺C#mnoᐵqrlock,stuṹvwxu(criticalsection),wxuᙠXzᑁ|ᐕ~ᐭ᡻)ᐸef.஺ᙠC#ᐵqrlockv᝞lock(expression)statement_blockexpression⊤Ḅ%H%ᵨ஺᝞bḄ*ᙢᵨthis᝞b•☟᝱(᝞wxṹuᙠ☟᝱ᑁ)•ᵨVo஺statement_blockVHwxuḄṹPuṹᙠ•Xzᑁ|Q᡻)஺☢HᵨlockᐵqrḄᐺ¢*£ᙠ¤¥¦?§olockᐵqrḄᵨᑭᵨ⌶஺ª*᝞usingSystem;usingSystem.Threading;namespaceThreadSimple

10internalclassAccountintbalance;Randomr=newRandom();internalAccount(intinitial){balance=initial;)internalintWithdraw(intamount)(if(balance<0)(஻᝞bbalance«¬0ᑣ®¯°thrownewException("NegativeBalance");)//☢Ḅṹ²ᙠ³=´ᦋbalanceḄ¶·ᡂ¹=//^ºᨵᐸ»᡻)Puṹᩭ´ᦋbalanceḄ¶஻cdbalanceḄ¶H^Q«¬0Ḅlock(this)

11Console.WriteLine("CurrentThread:"+Thread.CurrentThread.Name);஻᝞b¼ᨵlockᐵqrḄ½¾Qᙠ᡻)·ifḄᩩÀᑨ¹Ã஻Ä᜜ᓾ᡻)obalance=balance-amount´ᦋobalanceḄ¶஻P´ᦋ%PH^ÇḄᡠQYZPXifḄᩩÀÉÊ^ᡂËo஻GHPÌIÍÎ᡻)balance=balance-amount,ᡠYZbalanceQ«¬0if(balance>=amount){Thread.Sleep(5);balance=balance-amount;returnamount;)else(return0;//transactionrejected)))internalvoidDoTransactions(){for(inti=0;i<100;i++)Withdraw(r.Next(-50,100));

12)internalclassTest(staticinternalThread[]threads=newThread[10];publicstaticvoidMain(){Accountacc=newAccount(0);for(inti=0;i<10;i++)(Threadt=newThread(newThreadStart(acc.DoTransactions));threads[i]=t;)for(inti=0;i<10;i++)threads[i].Name=i.ToString();for(inti=0;i<10;i++)threads[i].Start();Console.ReadLine();}))

13Monitor┝%³0Ðᵨ%X»º¯Ñ9ÐᵨṹÒḄT⚪PiT⚪V^-ÓᵨlockᐵqroP¦◤⌕ᵨᑮSystem.ThreadingḄMonitor,ᡃÖ¹×ØᘤMonitormnoᐳKEFḄᫀ஺Monitor┝%|ᨵÛᑮPt┝Ü%ÓX)ÝÞ஺%'┝àᑴ²oᙠQâ\]ḄjkXz|ᨵãTP%஺Monitoref9ᐹåḄ%$ᐵὶGHᵫ¬sH☟᝱Ḅᡠ^Qᵨsᩭv%èsḄᡠᨵAH☟᝱Ḅ^Qᵨ%ᩭᵨ஺☢ṹ?§oᵨMonitor┝%ḄjéQueueoQueue=newQueue();Monitor.Enter(oQueue);……஻ÑᙠoQueue%|Q³=ÝëoMonitor.Exit(oQueue);஻¥ì┝᝞íᡠª³îᵨMonitor.Enter()┝%XP%Vïsᡠᨵo,ᐸs⌕ãTP%|ᨵ.sᵨMonitor.Exit()¥ì┝஺o²

14ᨬñAQ¥ì┝tMonitor.Exit()ᑏᙠtry-catch-finallya᪀Ḅfinallyṹᙽ¦஺%¬õöMonitor┝Ḅ%ᑁ÷A÷Ḽùs$ᐵḄ#úûᐸHÑᙠᢝᨵ┝ḄḄᵨᐸýH⚜ᜓÿᑡᑡᜓ┝ḄᐸᑡᑡḼᙠ!"᝱ᦋ%ḄᑡḄ&ᵨ஺)ᨵ!┝Ḅᜓ+,┝-./ᵨMonitor.Pulse஺0123ᑡḄ456789ᑮ⚜ᜓᑡ!┝7+,-ᙠ⚜ᜓᑡḄ<=>ᓽ@!┝஺A☢CD᝞F/ᵨlockᐵHIJMonitorKᩭMNḄOPJ2QḄRSTᐺVḄWXὅZ[\ὅ]⚪஺RWXὅJ[\ὅ_`abḄWXὅᑏᐭᦪ[\ὅ>ᓽfghiD(k+lm6nḄo⌕ᡠᙠ)஺ᵨᑮḄstuvwx᝞AyusingSystem;usingSystem.Threading;✌ᐜ|}7~Ḅ!ḄKCell,ᙠKᨵ01yReadFromCell஺JWriteToCelL[\ὅᵨReadFromCellQfcellContentsḄᑁghiDᩭWXὅaᵨWriteToCell()01ᔣcellContentsᑏᐭᦪ஺

15DR᝞:publicclassCell(intcellContents;//Cell!ḄᑁboolreaderFlag=false;11"᝱᪗,true-<=f,falseᑣᙠᑏᐭpublicintReadFromCell()(lock(this)//LockᐵHI,ᜧ☢lockḄlm(if(!readerFlag)஻᝞Nᙠ

16Console.WriteLine(e);)Console.WriteLine("Consume:{0}H,cellContents);readerFlag=false;஻readerFlag᪗⊤D[\bᡂMonitor.Pulse(this);஻23WriteToCell()01(601ᙠ¡᜜᡻b))returncellContents;)publicvoidWriteToCell(intn)(lock(this)(if(readerFlag)(tryMonitor.Wait(this);

17catch(SynchronizationLockExceptione)//OP01(ᢣMonitorK◀Enter§᜜Ḅ01)ᙠ¨OPḄ©ṹ«7ᵨConsole.WriteLine(e);)catch(ThreadInterruptedExceptione)(஻ᙠ"᝱Ḅ-᎛Console.WriteLine(e);))cellContents=n;Console.WriteLine(HProduce:{0}",cellContents);readerFlag=true;Monitor.Pulse(this);//23¡᜜ᙠḄReadFromCell()01}})

18A☢|}WXὅKCellProdJ[\ὅKCellCons,.®¯°ᨵ01ThreadRun(),=±ᙠMain()²ᦪ³´µḄThreadStart©ᳮ!Ḅᐭ·஺publicclassCellProd(Cellcell;//7~ḄCell!intquantity=1;//WXὅWX¸ᦪ¹ºᓄ1publicCellProd(Cellbox,intrequest)(஻᪀⌼²ᦪcell=box;quantity=request;)publicvoidThreadRun()(for(intlooper=1;looper<=quantity;looper++)cell.WriteToCell(looper);//WXὅᔣ~!ᑏᐭ¾¿))

19publicclassCellConsCellcell;intquantity=1;publicCellCons(Cellbox,intrequest)(஻᪀⌼²ᦪcell=box;quantity=request;}publicvoidThreadRun()(intvalReturned;for(intlooper=1;looper<=quantity;looper++)valReturned=cell.ReadFromCell();஻[\ὅÁ~!f¾¿))ᯠÃᙠA☢KMonitorsampleḄMain()²ᦪᡃ®⌕ÅḄÆÇÈᑖÊWXὅJ[\ὅ/ᵨCellProd.ThreadRun஺0.1JCellCons.ThreadRun()01

20OCell!ab~஺publicclassMonitorSample(publicstaticvoidMain(String[]args)(intresult=0;஻᪗Í,᝞0⊤DnÎᨵ┯,᝞1⊤Ðᨵ┯ÑÒWCellcell=newCell();஻A☢/ᵨcell¹ºᓄCellProdJCellConsKWXJ[\¸ᦪᙳ20¸CellProdprod=newCellProd(cell,20);CellConscons=newCellCons(cell,20);Threadproducer=newThread(newThreadstart(prod.ThreadRun));Threadconsumer=newThread(newThreadStart(cons.ThreadRun));஻WXὅJ[\ὅ¯7ÇÈÔÎᨵÕº᡻btry(producer.Start();consumer.Start();

21producer.Join();consumer.Join();Console.ReadLine();)catch(ThreadStateExceptione)(஻Öᡠᜐ"᝱ḄØÖÙÚ᡻b7ÛḄ~Console.WriteLine(e);result=1;)catch(ThreadInterruptedExceptione)(//ᙠ"᝱Ḅ-᎛Console.WriteLine(e);result=1;)஻ÜÝMain஺²ᦪÎᨵÞßàÔA☢ᩩâã<=ᔣ᱄aÞß᡻båEnvironmerit.ExitCode=result;})

22ᙠç☢ḄROP2èMonitor.Pulse()ᩭᡂḄ஺✌ᐜWXὅWXàÙO-é[\ὅᜐ5"᝱êᑮᦈᑮWXὅḄ“ᾭî(Pulse)”23.WXᡂïÃ[\ὅaᐭ[\"᝱ÙWXὅÕº[\ὅᡂ~ÃᵨMonitor.Pulese()ÒḄ“ᾭî”஺.Ḅ᡻båñòᓫyProduce:1Consume:1Produce:2Consume:2Produce:3Consume:3Produce:20Consume:20ôMçòᓫḄRSõöᡃ®÷øùúᵨn<ÚNḄᜧ]⚪°⌕⚞ü÷øxîýḄþÿ᧕ᵨᑮᩖḄ஺C#()Ḅᳮ()ᙠḄ"#$%&'()*:

23,()*-ᵨᜧ0ᑖḄ2345ᙠ678᝱67:;<=>?ᯠABCDEFG•IJᵨThreadPool()ᩭLMNO,()*-P2QᜐSTḨ8᝱VWᕜYឋᙢ\ᖔ⏨G,IJᵨTimer(_2ᘤ)ᩭLMNThreadPoolabc,;ᵫefghḄ(ijkl,;Ḅᘤ)mᘤ◤⌕Windows2000jpefqᢝstᐸ:vwᵨ/Vᨵz᱐|ḄWindowsBᨵḄAPI}ᦪ஺ᙠ◤JᵨThreadPool.QueueUserWorkltem()mḄ᝞-஻,;mḄStartQwᵨWaitCallbackᳮ⊤Ḅ}ᦪpublicstaticboolQueueUserWorkltem(WaitCallback);஻Ḅ᝞ᦪobject⌴DWaitCallbackᡠ⊤ḄpublicstaticboolQueueUserWorkltem(WaitCallback,object);-ThreadPoolaW•;☟᝱aC⌕?ᡂḄ஺,Jᵨmᙠ,;⚗¢£¤m⚗¢W¥¦§Ḅ஺ᙠG¥◤¨©ªV◤⌕«Ḅ¬lᑏᡂ}ᦪᯠAltᦪ⌴DThreadPool.QueueUserWorkltem()®¯⌴Ḅ®W°☠WaitCallback

24ᳮḄ©ªஹᳮஹ³¯6¬lQWᵫef´ᡂḄ¥µὃ⇋£vᩖḄ¸⁚º⚪஺ThreadPoolḄᵨ-✌ᐜ¾©,;ManualResetEventm®¿,;ÀÁÂijᑭᵨḄÀÁᩭÄÅᐸ஺|ÆÇᡠᨵ¬lQ´ᡂjAManualResetEvent\ÈÉtᨵÀÁÊÄÅËÌͳ¯஺ManualResetEventᨵÎ;⌕Ḅ-ÏÐᓄm2ᵨᡝijᢣ_ᐸÔÕḄ8᝱(ᨵÀÁ/¥ÀÁ)NᙠÏÐᓄjAmÖᢝᩭḄ8᝱×ØᑮḄReset()ᡈὅSet()\wᵨ-Reset஺-ᐸÈÉt¥ÀÁ8᝱NSet()-ᐸÈÉtᨵÀÁ8᝱஺WaitOne()-JÇÛᢞÝØᑮManualResetEventᜐSᨵÀÁ8᝱Þ2m\ßà஺ᯠAᔣ¬l⚗Gvj}ᦪâãbcḄ¬l⚗\efᵨᩭÏÐᓄ©ªḄ஺ÇᡠᨵḄQ³¯´jAManualResetEvent.Set()\wᵨstwᵨManualResetEvent.WaitOne()ᜐᙠ678᝱ḄËäᦈᑮG;ÀÁSWäḼç᡻¯´ᡂAéḄ¬l஺ThreadPoolḄᵨêÆ-usingSystem;usingSystem.Collections;

25usingSystem.Threading;namespaceThreadExample(஻GWᵨᩭÖëÀìḄᦪíî᪀ltᦪ\⌴publicclassSomeState(publicintCookie;publicSomeState(intiCookie)(Cookie=iCookie;))publicclassAlpha{publicHashtableHashCount;publicManualResetEventeventX;publicstaticintiCount=0;publicstaticintiMaxCount=0;publicAlpha(intMaxCount)

26HashCount=newHashtable(MaxCount);iMaxCount=MaxCount;)஻ḄwᵨBeta()publicvoidBeta(Objectstate)(஻ð%ÇÛḄhashñṹóôCookieḄóConsole.WriteLine("{0}{1}Thread.CurrentThread.GetHashCode(),((SomeState)state).Cookie);Console.WriteLine(nHashCount.Count=={0},Thread.CurrentThread.GetHashCode()=={1}”HashCount.Count,Thread.CurrentThread.GetHashCode());lock(HashCount)(஻᝞õÇÛḄHash⊤öᨵÇÛḄHashóᑣøif(!HashCount.ContainsKey(Thread.CurrentThread.GetHashCode()))HashCount.Add(Thread.CurrentThread.GetHashCode(),0);HashCount[Thread.CurrentThread.GetHashCode()]=((int)HashCount[Thread.CurrentThread.GetHashCode()])+1;)intiX=2000;

27Thread.Sleep(iX);“Interlocked.Increment஺ùlW,;úùlᐹüýk☢ÿInterlocked.Increment(refiCount);if(iCount==iMaxCount)(Console.WriteLine();Console.WriteLine("SettingeventX");eventX.Set();)))publicclassSimplePool{publicstaticintMain(string[]args)(Console.WriteLine("ThreadPoolSample:");boolW2K=false;intMaxCount=10;஻ᐕᨬ10஻ManualResetEventᓄ᝱ManualResetEventeventX=newManualResetEvent(false);

28Console.WriteLine("Queuing{0}itemstoThreadPool",MaxCount);AlphaoAlpha=newAlpha(MaxCount);஻⚗஻!ᓄoAlphaḄeventX#ឋoAlpha.eventX=eventX;Console.WriteLine("QueuetoThreadPool0");try{஻%⚗&ᐭ஻()⌕ᵨᑮWindows2000-.᱐01ᨵḄAPI,ᡠ-4567NotSupportException89ThreadPool.QueueUserWorkItem(newWaitCallback(oAlpha.Beta),newSomeState(O));W2K=true;)catch(NotSupportedException)(Console.WriteLine("TheseAPI'smayfailwhencalledonanon-Windows2000system.");W2K=false;)if(W2K)஻᝞;<=>?@ᢝThreadPoolḄBC.

29for(intiltem=1;iltem

30))XYZ[\!ḄᙢB^SomeState_`abcdḄᦪfg᪀PTᙠXjᦪVk⌴mnaPop◤⌕rasᨵᵨḄdt&\ᩭvwmPx(yBz`{9ᨵᦔḄ஺X67ḄInterlocked_~`XxcᙠḄPTvwasᨵᵨḄ஺^`ᙠXP᝞;(Rᵨ(ᦋaPᐸ5ᦋ(P(lockᐵᙠ0.`a᪵Ḅ஺4XḄ67ᡃYZᙢᑖ᪆.☢ḄXPrḄ0Pᳮ¢TcᙠḄ!£`¤P(᪵15¥¦Y§ᙢSᵨT஺C#¨©ª«¬Ḅ®¯ᳮª°±ᘤ¬

31Timer_^³´a°±ᘤP°±᡻ᵨᡝᢣ°Ḅ¸ᦪ஺°±ᘤ¹®ºP>?%®»ḄP᡻ᵨᡝᢣ°Ḅ¸ᦪ஺ᓄaTimer^Timertimer=newTimer(timerDelegate,s,1000,1000);//¾ajᦪ^ᢣ°Timercallback¿ᡲP⊤Â⌕᡻ḄBCÃ//¾Äjᦪ^aᒹÆÇRBC⌕SᵨḄdḄPᡈὅÊ[ᵨÃ//¾Ëjᦪ^ÌͱΗ—бÑḄ±ÒÓ7ᙠḄ±ÎPᓫÕ`Ö×,ᢣ°“0”⊤»ᓽ¹®Ð±ᘤÃ//¾Ùjᦪ^°±ᘤḄ±ÎÎ◞——бÑ-ºPn◞(ÛḄ••Ý±ÎPTimerCallbackᡠÞ⊤ḄBC%VRᵨa•ßPᓫÕ~`Ö×஺ᢣ°Timeout.Infinite4-Ἥᵨ°áâã஺Timer.ChangeQBC^ᦋ°±ᘤḄ³´஺((`ajᦪ_åæçḄBC)SᵨÂè^timer.Change(1000,2000);Timer_ḄXÂè(ᩭé^MSDN)^usingSystem;usingSystem.Threading;namespaceThreadExample

32classTimerExamplestatepublicintcounter=0;publicTimertmr;)classApp{publicstaticvoidMain()(TimerExamplestates=newTimerExampleState();஻ÞᳮTimercallback,ZÞᳮ%V°±RᵨTimerCallbacktimerDelegate=newTimerCallback(CheckStatus);஻a±ÎÎ◞1sḄ°±ᘤTimertimer=newTimer(timerDelegate,s,1000,1000);s.tmr=timer;஻êëìᩭJKTimerḄâãwhile(s.tmr!=null)

33Thread.Sieᓽ(0);Console.WriteLine("Timerexampledone.");Console.ReadLine();}//ì☢`V°±RᵨḄBCstaticvoidCheckStatus(Objectstate)(TimerExamplestates=(TimerExampleState)state;s.counter++;Console.WriteLine("{0}CheckingStatus{1}.",DateTime.Now.TimeOfDay,s.counter);if(s.counter==5)(஻SᵨChangeBCᦋ±ÎÎ◞(s.tmr).Change(10000,2000);Console.WriteLine("changedif(s.counter==10)

34Console.WriteLine("disposingoftimers.tmr.Dispose();s.tmr=null;)}))X✌ᐜa°±ᘤPT%ᙠ1×ðºÑn◞1×RᵨaßCheckStatus()BCP?ᨵ2=7+#4A"#5+஺B./CMutexḄᐵEFG᝞I./JᵨMutex.WaitOne()KL2MMutexNOP᝞QR2M

35ḄMutexNOPSR>TUVᨵ(WᑮRXᵨMutex.ReleaseMutex()KLOP(BᙠIYᐸ=Z⌕[\(MutexḄ./]?ᨵ2M஺7☢(_`JᵨSMutexᩭbcd(./e./2Md(./ḄfgBd(./ḄhijGCk(MutexlᐵὶḄ஺ᐸmᵨᑮAutoResetEventḄ"#$Rᳮop'(qrs஺tᵨRḄᨵqru᝱ᩭ⊤x'(./Ḅfg஺//AutoResetEvent.Set()KLyzRpᨵqru᝱//AutoResetEvent.Reset()KLyzRp{qru᝱MutexḄ/|x_usingSystem;usingSystem.Threading;namespaceThreadExample(publicclassMutexSample(staticMutexgM1;staticMutexgM2;constintITERS=100;staticAutoResetEventEvent1=newAutoResetEvent(false);staticAutoResetEventEvent2=newAutoResetEvent(false);

36staticAutoResetEventEvent3=newAutoResetEvent(false);staticAutoResetEventEvent4=newAutoResetEvent(false);publicstaticvoidMain(String[]args)(Console.WriteLine("MutexSample…”)஻'(MutexpMyMutexgM1=newMutex(true,nMyMutex");஻'(ḄMutex.gM2=newMutex(true);Console.WriteLine(H-MainOwnsgM1andgM2H);AutoResetEvent[]evs=newAutoResetEvent[4];evs[0]=Eventl;//p4☢Ḅ./t1,t2,t3,t4AutoResetEventevs[1]=Event2;evs[2]=Event3;evs[3]=Event4;MutexSampletm=newMutexSample();Threadt1=newThread(newThreadStart(tm.t1Start));Threadt2=newThread(newThreadStart(tm.t2Start));Threadt3=newThread(newThreadStart(tm.t3Start));

37Threadt4=newThread(newThreadStart(tm.t4Start));t1.Start();஻JᵨMutex.WaitAII()KL2M'(MutexᦪḄᐰNOPt2.Start();//JᵨMutex.WaitOne()KL2MgM1ḄOPt3.Start();஻JᵨMutex.WaitAny()KL2M'(Mutexᦪ'(NOPt4.Start();஻JᵨMutex.WaitOne()KL2MgM2ḄOPThread.Sleep(2000);Console.WriteLine(H-MainreleasesgM1");gM1.ReleaseMutex();஻./t2,t3fgᩩThread.Sleep(1000);Console.WriteLine("-MainreleasesgM2");gM2.ReleaseMutex();஻./t1,t4fgᩩ஻2Mᡠᨵd(./fgWaitHandle.WaitAll(evs);Console.WriteLine(H--MutexSample");Console.ReadLine();)publicvoidt1Start()

38Console.WriteLine(',t1Startstarted,Mutex.WaitAII(Mutex[])");Mutex[]gMs=newMutex[2];gMs[0]=gM1;஻'(Mutexᦪ&pMutex.WaitAIpKLḄᦪgMs[1]=gM2;Mutex.WaitAII(gMs);஻2MgM1gM2]NOPThread.Sleep(2000);Console.WriteLine(',t1Startfinished,Mutex.WaitAII(Mutex[])satisfied");Even”.Set();஻./fgEven”yzpᨵqru᝱)publicvoidt2Start()(Console.WriteLine("t2Startstarted,gM1.WaitOne()");gM1.WaitOne();஻2MgM1ḄOPConsole.WriteLine("t2Startfinished,gM1.WaitOne()satisfied");Event2.Set();஻./fg,Event2yzpᨵqru᝱)publicvoidt3Start()(Console.WriteLine(Mt3Startstarted,Mutex.WaitAny(Mutex[])n);Mutex[]gMs=newMutex[2];gMs[0]=gM1;஻'(Mutexᦪ&pMutex.WaitAny()KLḄᦪ

39gMs[1]=gM2;Mutex.WaitAny(gMs);//2Mᦪ'(MutexNOPConsole.WriteLine(nt3Startfinished,Mutex.WaitAny(Mutex[])");Event3.Set();஻./fgEvent3yzpᨵqru᝱)publicvoidt4Start()(Console.WriteLine("t4Startstarted,gM2.WaitOne(gM2.WaitOne();஻2MgM2NOPConsole.WriteLine("t4Startfinished,gM2.WaitOne()");Event4.Set();஻./fgEvent4yzpᨵqru᝱)}}/|Ḅ)fQMutexSample-MainOwnsgM1andgM2t1Startstarted,Mutex.WaitAII(Mutex[])t2Startstarted,gM1.WaitOne()t3Startstarted,Mutex.WaitAny(Mutex[])

40t4Startstarted,gM2.WaitOne()-MainreleasesgM1t2Startfinished,gM1.WaitOne()satisfiedt3Startfinished,Mutex.WaitAny(Mutex|])-MainreleasesgM2t1Startfinished,Mutex.WaitAII(MutexQ)satisfiedt4Startfinished,gM2.WaitOne()MutexSample᡻ifQ"#ᙢ%ᑮ./t2,t3ḄhiG#gM1ḄOPpᩩḄBt4ᙠgM2OP4¡᡻it1ᑣᙠgM1gM2]NOPS4A᡻i஺Main஺£ᦪᨬ4,JᵨWaitHandle2MᡠᨵḄAutoResetEventḄqr¤Ḅqr¥⊤l¦./Ḅfg஺

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