惠普测试171+实验4进程的软中断信号机制实验

1、操作系统原理A 实验报告学生姓名： 陶浩 学 号： 1708090122班级： 惠普测试 171实验名称：实验4 进程的软中断信号机制实验实验指导教师： 葛艳4 进程的软中断信号机制实验一、实验目的?1熟悉信号的基本概念。?2掌握 Linux 系统中进程之间利用信号机制进行软中断通信的基本原理。二、实验内容1 .编译运行signall.c,把运行结果截图。（1）分析程序执行流程，运行结果以及程序实现的功能。 （ 2）分析子进程在等待接收信号前后的执行过程。2 . 编译运行 signal2.c 按照如下步骤分析运行结果：1）运行编译后的程序，查看输出；按Ctrl+c 键再查看程序执行结果。2）

2、将编译后的程序后台执行， 查看输出； 按 Ctrl+c 键再查看程序执行结果；在shell提示符下输入kill TNT pid ,查看程序执行结果，其中， pid是该程 序后台执行后显示的进程号。3）将第一个signal（SIGINT,SIG_IGN注释，看一下运行结果，分析原因。三、实验步骤及运行结果分析1 .编译运行signall.c,把运行结果截图。、- taal>aotaohaa-PC: h/Desktop/osLeammtes V + wincludfl <sTdio.h> irincludesys *n i t. n> tine I ude ”，】'

3、* tfinclud« * un i s 11 h h - kirclud -J5TdlibhlT- int j;Laid i -J'un int f vi=0； moin(J(int kJ rpid./1;w+iiltfCpid-forkO) 1);if (pid>c)i1for(k_1；k<3;k+)printt1 I 口而 f arert :id n"1 P k J ;5leep(I):kill(pidr17);，*度送软中断信号凿子进程*ait(0);，等替子进杆磋止，printf fParent exited I r1")：exit(

4、O)；else；signaif 17, inHun)： 尸演建救中断佶09i=1;=1)，循怀盥示科等诗父再理案就中断信号(printf-1 am child:SdTnK,j;iltfpd )rprint f<"Chi-d r i tpd1n">:exitffl >void int fun()函数中在 i=0;后加入 printf(" function:%d ,getpi();(1) 分析程序执行流程，运行结果以及程序实现的功能。. taohaotachaa-PC-parningy't? +taohaotaohao-PC:-/Deskto

5、p/osLearning/Lest41 g十十 signal1.c -o signail taohaolaohao-PC;'/Desktop/osLearning/te5t4$ ./slgrall I am Parent:1!I am child: 11I dm child:2!I am Parent:2! function:76642 Child exited! Parent exited!taohaotaohao PC:/Desktop/osLearning/testAt(2) 分析子进程在等待接收信号前后的执行过程。程序进入for循环后，输出I am Parent:1!,程序进入

6、 while循环，输出I am child:1!,k 的值为2,输出I am child:2!,接着进入for循环，输出I am Parent:2!,k=3不能进入for循环， 通过kill()向子进程发送中断信号，调用 void intfun()函数输出function:766443当前进程号, 子进程接收到中断信号中断，输出 Child exited!,然后父进程终止，输出 Parent exited!。2 .编译运行signal2.c按照如下步骤分析运行结果:-taohaonaoliaa-PC: '/Desotop/&sLeammE/test4+门cludg Ji II

7、. h -“elude csigrusl ,li>spinellidie -=ur i std . h3-sinclude <5： rllib,h>include j5/rfj i t.VQ id Alni I, -iIClLJ(),int *ait_nark;void /JaitLn.ct)(whilefft'ait "narkl-O);ymid st jp int (t/a i t mflr kw0 ;inr pl,p2siEnalCSieiNT.SIIGHk 设省版哈里星中苦信号，创建的子避腥勺父迸程邛同设置” whiltCfpl-forkC )-1)

8、:削建于用雀pl*/if <pl>0)|while t (p2-f or k( )-1 ; F 建子进程 if>0) prrntf，清皆£tL1键理止卷#nH ), wdic_fflark*l;signsHSIGINT, stop); 蹑收到 *c"l""后耳，ft stop*> vKiltingC);kiLlfpl JO);4向p1黑黏中断代号10*Fkintp2J2)；产向包覆墙中断信号1yF| waited);同步*，nsLt0)iP1 int -(1 Ph - t pr(K、 is killed &xic(0ji)

9、( wart rark-1 ;signal(iZrstopJ ;森轼中断信号 12, I* stop*/-Taoh 的taahaoP J '/Deikt&p/osLeam!ng/M5t4ffeit_JTark=1;iignal(12,srup)jL电欧注轼中断信号1之,拜st呼*，waitingO jlotkfttj :pa intlf ("Child process 2 is killed by parent I n*); exit(D);I elsesignaLf '0, stop),“追收到戟中生仁号 1。，ST stop*/Mitlng();lockf

10、(UR0)r('CMld process 1 ii killed by pareni1 n )ltKkf( 1 ,Qr。)；a) 1)运行编译后的程序，查看输出；按Ctrl+c键再查看程序执行结果。taohactaohao-PC:*/Desktcp/osLearning/test4$ g+ signal.c -o signa 12 taohaoteohao-PC;/DesktQp/QsLearning/test4$ ,/signals 请技f triy飕终止程序！ACChild process 1 is killed by parent!Child process 2 is kille

11、d by parentParent process is killed!b) 2)将编译后的程序后台执行，查看输出；按 Ctrl+c键再查看程序执行结果； 在shell提示符下输入kill TNT pid ,查看程序执行结果，其中，pid是该程序后台执行后显示的进程号。(1)先执行后台执行的指令，再查看进程号taohao(®t30haO'PC>/DMHop/osLearning/tM：4 十-xotaohac-PC /Desktop/DsLcflrning/test4S .， 二卒案行亨IId process 1 is killed by parent!process

12、2 Is killed by parenTt t process is killed 1 otaohao-PC -Oesktop<osLearning/test45 ./signaL2S 6583otaohac-PC */desk top/os Learning/tea t4s 请按 £trl+u谯终止理序！o*taahao-PC */Oesl(rop/osLearning/test4s |taohao taohao-PC： -/DesktQp/osLaning/te5t4+三-口，tachaotaohao-PC:ktpp/o5l eaj ning/les14i rn 97&#

13、171;&5taohao#taohao-PC:*/Desktop/osLea rninp/testflt1a广./5ignal2A请按CtriH键终止程序1tachao#taahaoPC;'/Des ktop/osLea rning/test4Jtz ohao taoh ao-PG /D eskto p/osLea rning/test4+i jtaohao4*tdohdo PC:-/Uesktop/osLcarnin/test4JUSERPID%CPU制1EMVSZRSSTTYroot10.00.222524490SB?root20.00.0007root40.00.00(3

14、7root60.00.0007root70.00.000?root80.10.0007root90.00.0007root100.00.000?root110.00*000 ?root120,0D.OQ0?root13oroo.oaa?root140.00.000?root15Q+QQ+QQ0?ps -ddX STATSTARTSs10:11S10:111<10:11I<10:11S10:11I10:11I10:11S10;11S10:1151Q;11S10:11S10:11S10:11TIME CCMWANDD i 28 /ibiri/inLt +pl日3 0:00 kthrea

15、dd0:DO kworker/0:UH D: 00 iiwn_pet epu_wq J D;03 Fksoftirqd/O U:40 rcu_sched D:00 rcu_bh0; DO niigratian/0C:00 iffatchdog/O口：Q。 cpuhp/0: CIO cpuhp/1 0;OQ watchdog/11 口； 0。rvigration/1to oh ao (Eto ohao PC */Desktop/osLcornir g/tcstl十= u xrfloT965340.00.0007root567060.0U.U00?root969160.00.000?root96g

16、630.00,000?teahao975140.91.061D14S401727taohao975340.0OJ229004B16pts/0laohao9了3570.71.0535664404927isohao973770.00.1231605040pts/1root9/4820.0U.U00？root977950,00.000 ?taohao9780557.40.0136921656pts/1taohao978B696.20.013692172pts/ltaohao978879&,30.013692172pLs/1：aohao979430.00.0376563324pt£/

17、0taohaot*taahao-K: /Dcsktop/os Learning/test41- |RI丸 SI Ss+R R RR+19:09 19:1019:1115;1119:1219:1219:1215:1219:12 19J3 191419； 14 19:14 19:140:00 korker/u256:0u:00 (kworker/2：2J0:00 Ikworker/1!3J 0:00 kworkcr/u256 3 0:01 deepin-terTinal 0:0。 /binybash0:00 deepin-reminal 0:00 /bir/bash0:00 kworker/0：0

18、J0:00 kworker/3:0J0110 ./signalJ0:18 ./signa120:18 ./signidl20:00 p£ -auxJ（一）该程序后台执行后显示了三个进程号，如果先杀死出现的父进程，输出结果程序结束。 taohaotaohao=PC: 而叩+= n xtaohao&taohao-PC;'/Desktop/osLerning/te5t4t T/5：gna.2& 1J 9788Sf Anhaotdohan-PC; '/Desktop/osLearning/test4t 请指tr,+t 逶叁止杵序i-Anhaotaohan-PC

19、;/DeskTop/osLrarning/test4t Chi d process 2 is ki ?d b/ parent rhiId proces5 1 is ki.led by parent!Parent process 15 k-1edltionaotcitaohio K: /Desktop osLearning,+= = >POt367060.00.00- u_19:100:00kwo rker/2:21PQt969160.00,00-_L19：110:00kworker/1 :刃P"969630.00,00- V7190:00kworker/u25& 3ra

20、chao97314。,91.061U14B40172?RI19:120:01deepin-T&rtninalrachao,73340.00.1229004816pts/DSs19:120:00/bin/bashtdchao973570.71.0535664404927SI19:120:00deepin-T&rJnmalrdchao973770.00.1231605040prs/lSa19:120:00/bin/bBshpot974820.00.00D?*.19:120:00kNorker/0:0'ODt977950.00.00D?19:130:00kworker/3:0

21、rachao97EA597.40.0136921856pt s /1R19:140：1&cachao9788696,80.013692172pt s /1R19:140:18./signalsrachao97EA798.30*013692172pt s /1R19”。0:13taohao 97943 0.0 0.0 37656 3324 pts/0kaohaoftaohao-PC；/Desktop/osLearning/te£t4$R+ kill -19:14INI 978850:00ps - auxaohaotaohao-PC:*/Desktop/osLearning/te

22、st4$ |（二）该程序后台执行后显示了三个进程号，先杀死子进程之后杀死父进程，得到输出结果。两个子进程和一个父进程。先杀死两个子进程。taohaotaohao-PG */Desktop/osLearning/test4 +dohdo9tdoliao-PC:*/Desktop/osLearning/test45 1 98428dohdo9tdot)<>o-PC: */Desktop/osLedrning/test45./signal?3请按Ctl+c键终止程序！oot969630.00.0007 aohao973141 .01 .0610148403647aohaoQ7340 00

23、.1240364Q64pts/naohao973570.51 .053566440492?aohao973770.00.1231605040pts/1oot974820.00.000?OOt977950.00.000?OOt983430.00.000?OOt983980.00.000?aohao9842894.90.0136921748pts/1aohao9842996.10.013692172pcs/1aohao9843095.40.013692172prs/1aohao985490.00.0376563136prs/Otaohao(8)taohao-PC: */Desktop/osLear

24、ning/test4aohao9taohao-PC:*/Desktop/osLearning/test4$ aohao9taohao-PC:*/Desktop/osLearning/test4$R+19:160:00kworker/u256:30:02deepin-terminaln：nn/bin/bash0:01deepin-terminal0:00/bin/bash0:00kworker/0:00:00kworker/3:O0:00kworker/2:10:00kworker/1:00:16./signal20:16./signal20:16./signalZ0:00ps -aux=- x

25、kill -INT 98430>- taohao(3)taohao-PC:*/Desktop/osLearning/test4aohao1*taohao-PC:*/Dcsktop/osLearning/test45 ./signa!2& 1 98428aohao9taohao-PC: -*/Desktop/osLearning/tesL4$ 请按 Ct r 1-c键终 止程序aohao973141.01.061014840364?SI19:12aohao973340.00.1230364964pts/OSs19:12aohao973570.51.053566440492?SI19

26、:12aohao973770.00.1231605040pts/1SS419:12oot974820.00.000119:12oot977950.00.000?I19:13oot983430.00.000?I19:15oot983980.00.000I19116aohao9842894.90.0136921748pts/1R19:16aohao9842996.10.013692172pts/1R19:16aohao9843095.40.013692172pts/1R19:16aohao985490.00.0376563136pts/OR)19:16aohaotaohao-PC: */Deskt

27、op/osl earning/test45ki11 -INT 98430aohaoHt aohao-PC: /Desktop/osLearning/tcst45kill -INT 98429aohao?t aohao-PC:*/Desktop/osLearnine/test4$taohao(S)taohao-PC: -*/Desktop/osLearning/test4201000006660 000000001110o:0:0:0:0:0:0:0:0: :0:0:二一 0 Xdeepin-terminal /bin/bash deepin-terminal /bin/bash kworker

28、/0:0 kworker/3:0 kivorker/2:1 kworker/1:0 .7signal2 ./signa12 ./signa12ps -auxtaaaa -PC: -/Destt op sLeam i n 2/ test 1十三一 口doh<Ktdulid口-PC . -Z&esklcjp/osLEfdr nirg/ie5t4S .八 iridl2&1 9fi42fiaoiao4tdohda- PC . '/ttesktup/osLedf nin/test4£清发Ctl+匚暹终l程序Ekil Id process 1 Ls k i_lLed

29、 by parentthl Id process 2 i.s killed by parentM r ent process is ki Lied!taohaotaohao-PC:- f De5l<t op/q sLearn i n gy tes *1二一匚pohao97及4CLO0,14刈pts/OSs19:12D：DO/bin/bashraohao973570.5ED535664404527SI19:120:01deepirr-tenninal:aohao973770.00.1231605040pts/1Ss->19:120:00/bin/bashoot974g20.00.00

30、0I19:120:00kworker/0:0,OOt977g50.00.D00?II9：U0:00kworker/3:0cot983430.00.D00?119:150:00kworker/2:1L00t0.00.D00?119： 160:00kworker/1:0:aohao9S42B94.90.D13632174gpt£/lR19： 160:16./signals:aohao9S42996.10.D1 3692Mlpts/1R19:160: 16./sigral2:aohao9E43095.40.D13692Mlpts/1R19:160: 16.sign312:aohao9B54

31、90.00.D376563136pt£/OR;19:160:00ps -aux:aahaotaohaa-PC:/De5ktop/osLearning/rest4( kill -INT 9fl430 :aohao9taohaa-PC:*/DesktDp/o£Learning/tesr4( kill -INT 9S429 :aohao9taohaa-PC:/>eskTop/o£Learning/Test45 kill -INT 98428 wohao顿raohacH PC:'/tesktop/osLearn inR/teEt4$ tjohaotaohdo

32、-PC: Deskt op. o iLe arn i n teit4oohaoMoohao PC /DesktopAosLcarning/tcst4t , ； signaL2&Ml 9842E|-aohaotnohno Pt /Oslctop/ol rflrni ng/tst4f 诗按【rr止程序I1 is killed t)y parent!，aunt proce55 is killed!by parent!1中已完成t aulid口 t.启口hao - Pt.rsignalZ-/M&kt叩/口式ni帽/S5t41 IQOt974720.00.0003i19J20:00| IcAor k'r/O；0'OOtq?79S0.00.000,i19；130:00| Ik worker/3：。'OOt933430.00.000?I19:150:00|k 樽 or kf/2-1"OOt983980.00.000?I19:160:0。Ik/vorker /1：0t aohao9&42S 0.0136(521748pt s/1ft19160:16,fsiginal2tao