OS Lab2012

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UNIPROCESSOR OPERATING

SYSTEMS

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Ex. No.: 1 CPU SCHEDULING

DATE: 9 2 2012

Aim:To write a java program to implement various C! s"#e$uling algorit#ms% su"# as &C&'%

'(& )reemptive * non+preemptive,% -oun$-oin% an$ riorit/ )reemptive * non+preemptive,

Algorithm:

Step 1: et t#e numer o pro"esses rom user.

Step 2:n main un"tion get t#e "#oi"e

i. t#e "#oi"e or &C&'%

i. et t#e C! urst time or ea"# pro"ess.ii. '"#e$ule t#e pro"esses ase$ on &&3 manner.

iii. Cal"ulate t#e waiting time o all t#e pro"esses an$ t#e average

waiting time.

iv. Cal"ulate t#e turn aroun$ time o all t#e pro"esses an$ t#e average

turn aroun$ time.

v. Displa/ t#e antt "#art.

ii. t#e "#oi"e or '(& )Non+reemptive,

i. et t#e C! urst time or ea"# pro"ess.

ii. '"#e$ule t#e pro"esses ase$ on s#ortest urst time.


waiting time.


turn aroun$ time.

v. Displa/ t#e antt C#art.

iii. t#e "#oi"e or '(& )reemptive,

i. et t#e C! urst time an$ arrival time or ea"# pro"ess.

ii. '"#e$ule t#e pro"esses ase$ on s#ortest urst time an$ arrival time.


waiting time.

2

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turn aroun$ time.


iv. t#e "#oi"e or -oun$ -oin

i. et t#e C! urst time or ea"# pro"ess an$ time 4uantum.

ii. '"#e$ule t#e pro"esses ase$ on t#e time 4uantum in &&3 manner.

a. reempt a pro"ess i $oes not inis# exe"ution wit#in t#e time

4uantum

. -es"#e$ule t#e preempte$ pro"esses again ater s"#e$uling

all t#e pro"esses on"e.

". -epeat t#e aove two steps until all t#e pro"esses inis# t#eir

exe"ution.


waiting time.


turn aroun$ time.


)e, t#e "#oi"e orriorit/ )Non+reemptive,

i. et t#e C! urst time an$ riorit/ or ea"# pro"ess

ii. '"#e$ule t#e pro"esses ase$ on t#eir riorit/ )Non+reemptive,

lower priorit/ value in$i"ates #ig#er priorit/ or exe"ution.


waiting time.


turn aroun$ time.


), t#e "#oi"e orriorit/ )reemptive,

i. et t#e C! urst time% arrival time an$ riorit/ or ea"#

pro"ess.

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ii. '"#e$ule t#e pro"esses ase$ on t#eir arrival time an$ riorit/

)reemptive, lower priorit/ value in$i"ates #ig#er priorit/

or exe"ution.


waiting time.

iv. Cal"ulate t#e turn aroun$ time o all t#e pro"esses an$ t#e

average turn aroun$ time.


Step !: Exe"ute t#e program an$ $ispla/ t#e result.

Step ":En$ t#e rogram

PROGRAM:

67 re"tangle.java 76

import java.applet.78

import java.awt.78

import java.io.78

import java.util.78

import java.lang.78

67applet "o$e;re"tangle; #eig#t

6applet>

76

puli" "lass re"tangle?ol$ exten$s Applet

@

int apw1B8

int pB8

int i0%n%n18

rap#i"s g getrap#i"s),8

puli" voi$ init),

@

tr/

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@

uere$-ea$er ojnew uere$-ea$er)new nput'tream-ea$er

)'/stem.in,,8

'/stem.out.println);ENTE- no. o pro"esses:;,8

nnteger.parsent)oj.rea$ine),,8

int "#8

int tBnew intnB8

$o @

'/stem.out.println);FEN! &3- C! 'CGED!N;,8

'/stem.out.println);1.&C&' Hn 2.'G3-TE'T (3 &-'T )non+

preemptive, Hn 5. 'G3-TE'T (3 &-'T )preemptive, Hn

. -3!ND -3N Hn

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apw1iL1BsjiBLapw1iB8

or) i08in8iLL,

@

'/stem.out.println);in$ivi$ual waiting time or pro"ess p;LpiB

L;is;Lapw1iBL; ;,8

M

or) i08in8iLL,

tLapw1iB8

loat avgt6n8

'/stem.out.println);average waiting time is:;Lavg,8

or) i08in8iLL,

@

int piB8

turniBt+1BLapw1iB8

'/stem.out.println);turnaroun$ time or pro"ess p;LpiB

L;is;LturniBL; ;,8

M

or) i08in8iLL,

tuLturniB8

loat avg1tu6n8

'/stem.out.println);average turn+aroun$ time is:;Lavg1,8

paint)g,8

M

rea8

"ase 5:

@

int total0%0%"o0%small999%sp0%sp10%x0%"ount08

int proBBnew intnB5B8

int wtBnew intnB8

int wt1Bnew intnB8

int t1Bnew intnB8

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int ttBnew intnB8

apw1new int 20B8

pnew int20B8

or)int i08in8iLL,

@

proiB0Bi8

'/stem.out.print);urst Time or ;LiL; :;,8

proiB1Bnteger.parsent)oj.rea$ine),,8

totalLproiB1B8

'/stem.out.print);Arrival Time or ;LiL; :;,8


M

or)int i08in8iLL,

wt1iBproiB2B8

or)int i08in8iLL,

t1iBproiB1B8

or)int i08in8iLL,

or)int jiL18jn8jLL,

i)proiB2B>projB2B,

@

int tempBproiB8

proiBprojB8

projBtemp8

M

or)int i18itotal8iLL,

@

small9998

or)int j"o8jn8jLL,

i)>projB2B,

"oLL8

or)int j08j"o8jLL,

9

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@

i)small>projB1B**projB1BP0,

@

smallprojB1B8

spprojB0B8

sp1j8

M

M

i)pxBsp,

@

apw1xL1BLL8

M

else

@

xLL8

pxBsp8

apw1xL1Bapw1xB8

apw1xL1BLL8

"ountLL8

M

prosp1B1B+18

i)prosp1B1B0,

ttsp1Bi8

or)int j08jn8jLL,

@

i)projB1BP0**jPsp,

wtjBL18

M

LL8

M

10

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or)int i08in8iLL,

or)int jiL18jn8jLL,

i)proiB0B>projB0B,

@

int tempBproiB8

'/stem.out.println),8

or)int m08m"ount8mLL,

pmBL18

$oule awt0.0%att0.08


or )int i 08 in8iLL,

@

'/stem.out.println);waiting time or pro"ess p

;LiL; ;L)wtiB+wt1iB,,8

awtL)wtiB+wt1iB,8

attL)wtiB+wt1iBLt1iB,8

M

or )int i 08 in8iLL,

@

'/stem.out.println);turnaroun$ time or

pro"ess p;LiL; ;L)wtiB+wt1iBLt1iB,,8

M

'/stem.out.println);Average waiting time : ;L

)awt6n,,8

'/stem.out.println);Average turnaroun$ time : ;L

)att6n,,8

n1"ountL18

paint)g,8

M

rea8

"ase :

11

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@

or) i08in8iLL,

@

'/stem.out.println);ENTE- urst time or ea"#

pro"ess: p;L)iL1,,8

tiBnteger.parsent)oj.rea$ine),,8

M

int roBnew intnB8

apw1new int20B8

apw10B08

int s4Bnew int20B8

int temp8

loat t08

loat tu08

int apwBnew intnB8

int ttime08

int turnBnew intnB8

int 08

or)i08in8iLL,

@

roiBtiB8

M

pnew int50B8

'/stem.out.println);enter time 4uantum;,8

int tsnteger.parsent)oj.rea$ine),,8

int 08

s4B08

i08

tempts8

int "ount08

$o

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@

i)roiB0,

@

iLL8

s4Bs4+1BLtemp8

M

else

i)roiB>ts,

@

roiBroiB+ts8

pBiL18

LL8

iLL8

tempts8

s4Bs4+1BLtemp8

turni+1Bs4B8

08

or)int m08mn8mLL,

LromB8

"ountLL8

M

else

i)roiB>0,

@

temproiB8

roiB08

pBiL18

iLL8

LL8

s4Bs4+1BLtemp8

turni+1Bs4B8

15

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08

or)int m08mn8mLL,

LromB8

"ountLL8

M

i)in,

i08

Mw#ile)P0,8


or)i08i"ount8iLL,

@

apw1iBs4iB8

M


or)i08in8iLL,

@

apwiBturniB+tiB8

tLapwiB8

tuLturniB8

M

or)i08in8iLL,

'/stem.out.println); waiting time or p;L)iL1,L;is:;LapwiB,8

loat avgt6n8


or)i08in8iLL,

'/stem.out.println);turn aroun$ time is:;LturniB,8

loat avg1tu6n8


n1"ount8

paint)g,8

M

1

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rea8

"ase pr1jB,

1

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@

temppr1iB8

pr1iBpr1jB8

pr1jBtemp8

M

or) i08in8iLL,

or)int j08jn8jLL,

i)pr1iBprjB,

piBjL18

or)i08in8iLL,

@

int piB8

apw1iL1Bt+1BLapw1iB8

M

or) i08in8iLL,

@

'/stem.out.println);in$ivi$ual waiting time or

pro"ess p;LpiBL;is;Lapw1iBL; ;,8

M

or) i08in8iLL,

tLapw1iB8

loat avgt6n8


or) i08in8iLL,

@

int piB8

turniBt+1BLapw1iB8

'/stem.out.println);turnaroun$ time or pro"ess

p;LpiBL;is;LturniBL; ;,8

M

or) i08in8iLL,

1J

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tuLturniB8

loat avg1tu6n8


paint)g,8

M

rea8

"ase J:

@

int total0%0%"o0%small999%sp0%sp10%x0%"ount08

int proBBnew intnBB8

int wtBnew intnB8

int wt1Bnew intnB8

int t1Bnew intnB8

int ttBnew intnB8

apw1new int 20B8

pnew int20B8

or)int i08in8iLL,

@

proiB0Bi8

'/stem.out.print);urst Time or ;LiL; :;,8


totalLproiB5B8

'/stem.out.print);Arrival Time or ;LiL; :;,8


'/stem.out.print);riorit/ or ;LiL; :;,8


M

or)int i08in8iLL,

wt1iBproiB2B8

or)int i08in8iLL,

t1iBproiB5B8

1=

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or)int i08in8iLL,

or)int jiL18jn8jLL,

i)proiB2B>projB2B,

@

int tempBproiB8

proiBprojB8

projBtemp8

M

or)int i18itotal8iLL,

@

small9998

or)int j"o8jn8jLL,

i)>projB2B,

"oLL8

or)int j08j"o8jLL,

@

i)small>projB1B**projB5BP0,

@

smallprojB1B8

spprojB0B8

sp1j8

M

M

i)pxBsp,

@

apw1xL1BLL8

M

else

@

xLL8

pxBsp8

1O

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apw1xL1Bapw1xB8

apw1xL1BLL8

"ountLL8

M

prosp1B5B+18

i)prosp1B5B0,

ttsp1Bi8

or)int j08jn8jLL,

@

i)projB5BP0**jPsp,

wtjBL18

M

LL8

M

or)int i08in8iLL,

or)int jiL18jn8jLL,

i)proiB0B>projB0B,

@

int tempBproiB8

proiBprojB8

projBtemp8

int temwtiB%tem1ttiB8

wtiBwtjB8

wtjBtem8

ttiBttjB8

ttjBtem18

M


or)int m08m"ount8mLL,

pmBL18

$oule awt0.0%att0.08

19

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or )int i 08 in8 iLL,

@

'/stem.out.println);waiting time or pro"ess p ;LiL; ;L

)wtiB+wt1iB,,8

awtL)wtiB+wt1iB,8

attL)wtiB+wt1iBLt1iB,8

M

or )int i 08 in8 iLL,

@

'/stem.out.println);turnaroun$ time or pro"ess p;LiL; ;L

)wtiB+wt1iBLt1iB,,8

M

'/stem.out.println);Average waiting time : ;L)awt6n,,8

'/stem.out.println);Average turnaroun$ time : ;L)att6n,,8

n1"ountL18

paint)g,8

M M

M w#ile)"#P=,8

M

"at"# )Ex"eption e,

@M

M

puli" voi$ paint)rap#i"s g,

@

or)int j18jn18jLL,

@

g.$raw-e"t)

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g.$raw'tring);;Lapw1n1B%appletviewer re"tangle?ol$.#tml

ENTE- no. o pro"esses:

java &itting

Enter numer o lo"s

0,

@

nee$iBjBmaxiBjB+allo"iBjB8

M

M

M

'/stem.out.println); T#e $etails o max. nee$ o pro"esses;,8

or)i08im8iLL,

@

'/stem.out.print);Enter t#e max nee$ resour"e or t#e pro"ess:; Li,8

or)j08jn8jLL,

@

'/stem.out.print)nee$iBjB,8

'/stem.out.print);Ht;,8

M

'/stem.out.print);Hn;,8

M

66'/stem.out.println); T#e sae se4uen"e is;,8

sae)p%allo"%nee$%avl%m%n,8

M

puli" stati" voi$ sae)int pB%int allo"BB%int nee$BB%int avlB%int m%int n,

@

int i%j%"0%0%0%108

intB npnew int=B8

intB ssnew int1

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or)j08jn8jLL,

@

i)nee$iBjBavljB,

@

LL8

M

M

'/stem.out.println);test ;L ,8

i)n,

@

'/stem.out.println);Allo"ate$ ; LpiB,8

ssiB18

'/stem.out.println); eore Allo"ation ;,8

or)j08jn8jLL,

@

'/stem.out.print)avljB,8

'/stem.out.println);Ht;,8

M

'/stem.out.println);Fo$iie$ Avl;,8

or)j08jn8jLL,

@

avljBallo"iBjBLavljB8

'/stem.out.print)avljB,8


M

M

else

@

ssiB9998

M

M

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or)i08im8iLL,

@

i)ssiB999,

@

1LL8

or)j08jn8jLL,

@

npBpiB8

'/stem.out.println);unallo"ate$ pro"ess ;L npB,8

M

LL8

M

else

@


M

M

i)1P0,

@

sae1)np%allo"%nee$%avl%m%n,8

M

M

puli" stati" voi$ sae1)intB np%intBB allo"%int nee$BB%int avlB%int m%int n,

@

int i1%j1%"10%10%10%20%x08

intB np1new int=B8

intB ssnew int1

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108

or)j108j1n8j1LL,

@

i)nee$i1Bj1Bavlj1B,

@

1LL8

66'/stem.out.println); re test ;L 1,8

M

M

i)1n,

@

'/stem.out.println);Allo"ate$ pro"ess ; Li1,8

'/stem.out.println);eore Fo$ii"ation;,8

or)j108j1n8j1LL,

@

'/stem.out.print)avlj1B,8


M

ssi1B18

'/stem.out.println);Fo$iie$ Avl;,8

or)j108j1n8j1LL,

@

avlj1Ballo"i1Bj1BLavlj1B8

'/stem.out.print)avlj1B,8


M

M

else

@

ssi1B9998

J

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'/stem.out.println);!nallo"ate$ pro"esses; Li1,8

M

xxL18

M

M

or)i108i1m8i1LL,

@

i)ssi1B999,

@

2LL8

or)j108j1n8j1LL,

@

np1Bnpi1B8

M

1LL8

M

M

i)20,

@

'/stem.out.println); T#e s/stem is in sae state;,8

M

else

@

'/stem.out.println); T#e s/stem is in unsae state;,8

M M M

OUTPUT:

Q:H3'>java" aner.java

Q:H3'>java aner

Enter t#e no. o pro"esses java" aging.java

Q:H3'>java aging

Enter numer o pages java "igarette

Agent: putting paper mat"#es

'moer 5: etting paper mat"#es + IesP

'moer 5: got w#at nee$e$P

'moer 5: -olling.

'moer 5: 'moing.

'moer 5: Done smoing.




'moer 5: -olling.

'moer 5: 'moing.





'moer 5: -olling.

'moer 5: 'moing.


Agent: putting toa""o paper

'moer 2: etting toa""o paper + IesP

'moer 2: got w#at nee$e$P 'moer 2: -olling.

'moer 2: 'moing.




=1

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'moer 5: -olling.

'moer 5: 'moing.


Agent: putting toa""o paper

'moer 2: etting toa""o paper + IesP


'moer 2: -olling.

'moer 2: 'moing.


RESULT:

=2

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T#us t#e program or implementing "igarette smoers prolem using multit#rea$ing was

exe"ute$ an$ output was veriie$.

Ex.No: = MULTIPLE SLEEPING )AR)ERS

DATE: 22 5 2012. PRO)LEM

AIM:

To write a java program to implement t#e multiple sleeping arers prolem.

PRO)LEM STATEMENT:

To simulate multiple sleeping arers% all in one arers#op t#at #as a inite numer o

"#airs in t#e waiting room. Ea"# "ustomer is instantiate$ rom a single "ustomer "lass an$ ea"#

arer is instantiate$ rom a single arer "lass(

ALGORITHM:

Step 1:mport all t#e java iles.

Step 2: Create a "lass "alle$ em1 to implement all t#e "ustomers in t#e s/stem an$ "reate

a separate "lass or arers or servi"ing t#e "ustomer.

Step !: n t#e main "lass initialiSe all t#e variales an$ get t#e numer o "ustomers

entering in t#e s/stem.

Step ": t#e numer o "ustomer is less t#an t#e no o "#airs "#airs t#en all t#e "ustomer

will e serve$ or else t#e "ustomer #ave to wait until an$ unless t#e arer ree.

PROGRAM:

import java.io.78

import java.lang.78"lass "ust

@

puli" int $isp)int "n,

@

return)"n,8

=5

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M

M

"lass em1 exten$s T#rea$

@

arer mnew arer),8

"ust "new "ust),8

puli" s/n"#roniSe$ voi$ run),

@

tr/

@

w#ile)m."numm.n,

@

int t".$isp)m."numLL,8

'/stem.out.println);arer2 serves Customer ;Lt,8

T#rea$.sleep)1

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"ust "new "ust),8

int j8

'/stem.out.println);Enter no o C#airs in"lu$ing two arer C#airs: ;,8

"#nteger.parsent)r.rea$ine),,8

'/stem.out.println);Enter no o Customers : ;,8

nnteger.parsent)r.rea$ine),,8

e.start),8

i)"#n,

@

n1n+"#8

'/stem.out.println)n1L; Customers et t#e '#op;,8

nn+n18

'/stem.out.println)"#L; Numer o "ustomers in t#e s#op;,8

wt"#+28

'/stem.out.println)wtL;Numer o "ustomers waiting in t#e s#op;,8

M

i)"#>n,

@

"#+n8

'/stem.out.println)L; No o ree "#airs;,8

M

66e.start),8

w#ile)"numn,

@

int t".$isp)"numLL,8

'/stem.out.println);arer1 serves ; L; Customer ; L t,8

T#rea$.sleep)1000,8

M

'/stem.out.println);arer1 sleeps ;,8

M

"at"#)Ex"eption e,@M

=

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M

M

OUTPUT:

Q:H>java" arer.java

Q:H>java arer

Enter no o C#airs in"lu$ing two arer C#airs:

java" et'/stem.java

Q:H3'>java et'/stem

ntera"e Name : F' TC oopa" intera"e

Car$Name: lo

o"al #ost Name : lo"al#ost

Gost A$$ress : 12=.0.0.1

#ar$ware a$ress:

00+01+JC+

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T#us t#e java program or implementation o retrieval o networ operating s/stem

inormation was written an$ exe"ute$.

REAL 8 TIME OPERATING

SYSTEMS

O1

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Ex.No.:9 ALARM CLOC+

Date: 12 2012

AIM:

To write a C program or implementing Alarm Clo".

PRO)LEM STATEMENT:

Clo" wit# alarm un"tionalit/ s#all e implemente$% t s#all e possile to set t#e time%

an$ to set t#e alarm time% t#e alarm s#all e enabledw#en t#e alarm time is set% t#e alarm s#all e

activatedw#en t#e alarm is enale$% an$ w#en t#e "urrent time is e4ual to t#e alarm time% an

a"tivate$ alarm must e a"nowle$ge$. A"nowle$gement o an alarm s#all lea$ to t#e alarm

eing disabled, thealarm is enale$ again w#en a new alarm time is set% an alarm w#i"# is not

a"nowle$ge$ s#all e repeate$ ever/ 10 se"on$s. T#e program s#all "ommuni"ate wit# a

grap#i"al user intera"e% w#ere t#e "urrent time s#all e $ispla/e$% an$ w#ere t#e alarm time s#all

e $ispla/e$ w#en t#e alarm is enale$. t s#all e possile to terminate t#e program% using a

"omman$ w#i"# is sent rom t#e grap#i"al user intera"e.

ALGORITHM:

Step 1:mport all t#e " iles.

Step 2: et t#e input rom t#e user set t#e time an$ alarm time(

Step !: "urrent time is e4ual to alarm time t#en alarm must a"tivate$ an$ a"nowle$ge$. An$

t#ere is no a"nowle$gement

Step ":T#e alarm is enale$ again on"e a new alarm time is set an$ a"tivates an

a"nowle$gement.

Step 4:'top t#e program w#en "omman$ rom !.

PROGRAM:

]in"lu$est$io.#>

O2

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]in"lu$e"onio.#>

]in"lu$e$os.#>

]in"lu$est$li.#>

]in"lu$egrap#i"s.#>

]$eine ATG ;":Ht"HgiH;

voi$ main),

@

int i%j%%#our%min%g%/18

"#ar msgO0B8

int g$DETECT%gm8

initgrap#)*g$%*gm%ATG,8

stru"t $ostime?t t8

?$os?gettime)*t,8

set"olor)1,8

sprint)msg%;T#e "urrent time is: [$ [02$ [02$;% t.#our%

t.minute%t.se"on$,8

outtextx/)1 #our , goto 8

else i)#our t.#our ** mint.minute , goto 8

else

@

O5

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or)it.#our8i#our8iLL,

@

or)jt.minute8jJ08jLL,

@

08

w#ile)J0,

@

"lear$evi"e),8

LL8

setillst/le)1%1,8

ar)

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goto a8

MMMMM

a:

get"#),8

exit)0,8

:

"lear$evi"e),8

outtextx/)2

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T#us t#e program or implementing -eal+time 3perating '/stem !sing Alarm Clo" was

written exe"ute$ an$ output was veriie$.

DATA)ASE OPERATING

SYSTEMS

OJ

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Ex. No.: 10 TRANSACTION AND CONCURRENCY CONTROL

DATE: 19 2012

AIM:

To write a (ava program to implement aning appli"ation or #an$ling t#e "on"urren"/

"onli"t t#at o""urs etween multiple "lient appli"ations.

PRO)LEM STATEMENT:

Assume an/ appli"ation )e.g. aning, on /our own an$ $o t#e ollowing exer"ises.1. nvestigate an$ implement t#e 3je"t 'toreUs "on"urren"/ options.

2. mplement t#e "on"urren"/ "onli"t t#at o""urs etween multiple "lient appli"ations.

5. 3serve an$ implement t#e impli"ation o neste$ transa"tions.

ALGORITHM:

CLIENT:1. Create a menu to #ave a new a""ount% "#e" alan"e% wit#$raw% $eposit an$ transer.

2. et t#e "#oi"e rom t#e user an$ write it to t#e server.

5. t#e "#oi"e is 1% get t#e a""ount name an$ "reate t#e a""ount numer.

. t#e "#oi"e is 2% get t#e a""ount numer an$ $ispla/ t#e alan"e.

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1. et t#e "#oi"e rom t#e "lient.

2. t#e "#oi"e is 1% estalis# a $ataase "onne"tion an$ insert t#e new a""ount $etails

into t#e $ataase.

5. t#e "#oi"e is 2% sele"t t#e ne"essar/ re"or$ an$ "#e" t#e alan"e.

. t#e "#oi"e is 5% %

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@

'/stem.out.println);;,8'/stem.out.println);1.Create a new A""ountHn

2.C#e" alan"eHn5.Rit#$rawHn .DepositHn

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out.writent)a"no1,8

M

rea8"ase 2:

'/stem.out.print);Enter t#e A""ount Numer:;,8

int a"no08oolean pa"#alse8

tr/

@a"nos".nextnt),8

M

"at"#)Ex"eption e,

@'/stem.out.println);Enter t#e \ali$ A""ount Numer;,8

pa"#true8

M

int al08out.writent)a"no,8

i)in.rea$oolean),,@

alin.rea$nt),8

'/stem.out.println);t#e alan"e is:;Lal,8M

else

@

i)pa"#alse,@

'/stem.out.println);A""ount not availale;,8

MM

rea8

"ase 5:oolean "#e"1alse8

int a"no508

int amt508

tr/@


a"no5s".nextnt),8'/stem.out.print);Enter t#e Ammount:;,8

amt5s".nextnt),8

M"at"#)Ex"eption e,

@

'/stem.out.println);nvali$ nput;,8

"#e"1true8

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M

i)"#e"1alse,

@out.writent)a"no5,8

out.writent)amt5,8

i)in.rea$oolean),,@

i)in.rea$oolean),,

@'/stem.out.println);Fone/ is Rit#$rawn;,8

M

else

@'/stem.out.println);Fone/ is not Enoug# to Rit#$raw;,8

M

M

else@

'/stem.out.println);A""ount is not availale;,8rea8

M

Mrea8

"ase :


int a"nos".nextnt),8out.writent)a"no,8

'/stem.out.print);Enter t#e Ammount:;,8

int amts".nextnt),8out.writent)amt,8

i)in.rea$oolean),,

@'/stem.out.println);Ammount is Deposite$;,8

M

else

@'/stem.out.println);C#e" t#e A""ount Numer;,8

M

rea8"ase

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'/stem.out.print);Enter t#e Amount to transer:;,8

int tamts".nextnt),8

out.writent)tamt,8rea8

"ase J:

'/stem.exit)0,8rea8

$eault:

'/stem.out.println);nvali$ nput;,8rea8

M

M

Minall/

@

s."lose),8

MM"at"#)3Ex"eption e,

@e.print'ta"Tra"e),8

M MM

Ser-er

import java.io.78

import java.net.78import java.util.78

import java.lang.78

puli" "lass "lient@

puli" stati" voi$ main)'tring argsB,

@tr/

@

'o"et snew 'o"et);12=.0.0.1;%O0O0,8

tr/@

Data3utput'tream outnew

Data3utput'tream)s.get3utput'tream),,8Datanput'tream innew

Datanput'tream)s.getnput'tream),,8out.writent)2

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'/stem.out.println);1.Create a new A""ountHn

2.C#e" alan"eHn 5.Rit#$rawHn .DepositHn

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@

a"nos".nextnt),8

M"at"#)Ex"eption e,

@

'/stem.out.println);Enter t#e \ali$ A""ount Numer;,8pa"#true8

M

int al08out.writent)a"no,8

i)in.rea$oolean),,

@

alin.rea$nt),8'/stem.out.println);t#e alan"e is:;Lal,8

M

else

@ i)pa"#alse,

@'/stem.out.println);A""ount not availale;,8

M

Mrea8

"ase 5:

oolean "#e"1alse8

int a"no508int amt508

tr/

@'/stem.out.print);Enter t#e A""ount Numer:;,8

a"no5s".nextnt),8

'/stem.out.print);Enter t#e Ammount:;,8amt5s".nextnt),8

M

"at"#)Ex"eption e,

@'/stem.out.println);nvali$ nput;,8

"#e"1true8

Mi)"#e"1alse,

@

out.writent)a"no5,8out.writent)amt5,8

i)in.rea$oolean),,

@

i)in.rea$oolean),,

9

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@

'/stem.out.println);Fone/ is Rit#$rawn;,8

Melse

@

'/stem.out.println);Fone/ is not Enoug# toRit#$raw;,8

M

Melse

@

'/stem.out.println);A""ount is not availale;,8rea8

M

Mrea8

"ase :'/stem.out.print);Enter t#e A""ount Numer:;,8

int a"nos".nextnt),8out.writent)a"no,8

'/stem.out.print);Enter t#e Ammount:;,8

int amts".nextnt),8out.writent)amt,8

i)in.rea$oolean),,

@'/stem.out.println);Ammount is Deposite$;,8

M

else@

'/stem.out.println);C#e" t#e A""ount Numer;,8

M

rea8"ase

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$eault:

'/stem.out.println);nvali$ nput;,8

rea8M

M

Minall/

@

s."lose),8M

M"at"#)3Ex"eption e,

@

e.print'ta"Tra"e),8MMM

OUTPUT:Ser-er

Q:H>java" server.java

Q:H >java server

Clie't

Q:H >java" "lient.java

Q:H >java "lient

1.Create a new A""ount

2.C#e" alan"e

5.Rit#$raw

.Deposit

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2. C#e" alan"e

5. Rit#$raw

. Deposit

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Fone/ is Rit#$rawn


2.C#e" alan"e

5.Rit#$raw

.Deposit

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2.C#e" alan"e

5.Rit#$raw

.Deposit

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2

Enter t#e A""ount Numer: 1001

t#e alan"e is:2000


2.C#e" alan"e

5.Rit#$raw

.Deposit

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RESULT:

T#us t#e (ava program to implement aning appli"ation or #an$ling t#e "on"urren"/

"onli"t t#at o""urs etween multiple "lient appli"ations. Ras written an$ exe"ute$ su""essull/.

101

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DISTRI)UTED OPERATING

SYSTEMS

Ex.No: 11 GENERATION O* ', SET O* NUM)ERS

DATE: 2J 2012 USING RMI

AIM:

To write a java program or implementing -F to generate XnU set o numers.

PRO)LEM STATEMENT:

During an -F appli"ation% ea"# time /ou run t#e "lient program t#r -F "lient n

t#e server program `-F server will generate XnU sets o -an$om numer XnU is a positive integer.

ALGORITHM:

Step 1: mport all java iles in -F server an$ -F "lient iles.

Step 2: Create a -F server "lass t#at will exten$ t#e remote oje"t an$ implement re"eive

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message)w#i"# is a "lient intera"e etween server an$ "lient,

Step !: "reate a -F server "lass in w#i"# t#e re"eive message #as een $e"lare$(

Step ": w#ile exe"uting t#e server no$e an$ port numer t#at server an$ it will as

t#e numer o items #as to e sent an$ $ispla/ t#ose items.

Step : n -F "lient t#e port numer generate$ in t#e server will e given or

re"eiving all t#e items.

PROGRAM:

RMI CLIENT:

import java.io.78

import java.rmi.78

import java.rmi.registr/.78

import java.net.78

puli" "lass -miClient

@

stati" puli" voi$ main)'tring argsB,t#rows 3Ex"eption

@

-e"eiveFessagentera"e rmi'erver8

-egistr/ registr/8

'tring serverA$$ressargs0B8

'tring serverortargs1B8

66'tring textargs2B8

int no8

nonteger.parsent)args2B,8

int rvalBnew intnoB8

66'/stem.out.println);Enter t#e numers;,8

66uere$-ea$er rnew uere$-ea$er)new nput'tream-ea$er)'/stem.in,,8

'/stem.out.println);sen$ing ;LnoL; to ;LserverA$$ressL;:;Lserverort,8

tr/@

66 get t#e `registr/

105

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registr/o"ate-egistr/.get-egistr/)

serverA$$ress%

)new nteger)serverort,,.int\alue),

,8

66 loo up t#e remote oje"t

rmi'erver

)-e"eiveFessagentera"e,)registr/.looup);rmi'erver;,,8

66 "all t#e remote met#o$

rvalrmi'erver.re"eiveFessage)no,8

or)int i08ino8iLL,

'/stem.out.println)rvaliB,8

M

"at"#)-emoteEx"eption e,@

e.print'ta"Tra"e),8

M

"at"#)Notoun$Ex"eption e,@

e.print'ta"Tra"e),8

M

M

M

RMI SER#ER:

import java.util.78

import java.rmi.78

import java.rmi.registr/.78

import java.rmi.server.78

import java.net.78

puli" "lass -mi'erver exten$s java.rmi.server.!ni"ast-emote3je"t

implements -e"eiveFessagentera"e

@

nt t#isort8

10

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'tring t#isA$$ress8

-egistr/ registr/8 66 rmi registr/ or looup t#e remote oje"ts.

66 T#is met#o$ is "alle$ rom t#e remote "lient / t#e -F.

66 T#is is t#e implementation o t#e `-e"eiveFessagentera"e.

puli" intB re"eiveFessage)int x, t#rows -emoteEx"eption

@

'/stem.out.println)x,8

-an$om rnew -an$om),8

int valB new intxB8

or)int i08ix8iLL,

@

valiBr.nextnt)2

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registr/.rein$);rmi'erver;% t#is,8

M

"at"#)-emoteEx"eption e,@

t#row e8

M

M

stati" puli" voi$ main)'tring argsB,

@

tr/@

-mi'erver snew -mi'erver),8

M

"at"# )Ex"eption e, @

e.print'ta"Tra"e),8

'/stem.exit)1,8

M

M

M

RECEI#E MESSAGE INTER*ACE:

import java.rmi.78

puli" intera"e -e"eiveFessagentera"e exten$s -emote

@

puli" int B re"eiveFessage)int x, t#rows -emoteEx"eption8

M

OUTPUT:

Q:HiisemHosla>java -mi'erver

t#is a$$ressno$e+956192.1JO.2.105%port5252

J

Q:HiisemHosla>java -miClient 192.1JO.2.105 5252 J

10J

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sen$ing J to 192.1JO.2.105:5252

10

2

12

5

19

tsiB,

@

temptsiB8

M

M

'/stem.out.println);ENTE-N C-TCA 'ECT3N.......;,8

'/stem.out.println);Hn;,8

10O

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'/stem.out.println);'TEV' TFE'TAF';,8


or)i08in8iLL,

@

j108

'/stem.out.print)i,8


w#ile)re44iBj1BP0,

@

or)j08jn8jLL,

@

i)re44iBj1BtsjB,

@

'/stem.out.print););L re44iBj1B L;%; Lj L;,;,8


M

M

j1LL8

M


M

or)i08in8iLL,

@

i))temptsiB, ** )tsiBP0,,

@

'/stem.out.println);T#e site ; L i L; is in "s;,8


tsiB08

'/stem.out.println);-EEA'N.......;,8


or)j08jn8jLL,

109

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@

i)iPj,

@

'/stem.out.println); -elease message to :; Lj L ;

rom ; LiLHn ,8

M

M

M

M

'/stem.out.println);-e4uest bueue !p$ations ;,8

'/stem.out.println);+++++++++++++++++++++++++++;,8

'/stem.out.println);'TE'V -Eb!'T b!E!E';,8

or)i08in8iLL,

@

'/stem.out.print)i,8


sen$release)i%re44%n%%ts,8

M

M

puli" stati" voi$ sen$release)int i%intBB re44%int n%int %intB ts,

@

int j08

w#ile)re44iBjBP0,

@

re44iBjBre44iBLLjB8

M

int t0%j108

w#ile)re44iBtBP0,

@

110

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or)j108j1n8j1LL,

@

i)re44iBtBtsj1B,

@

'/stem.out.print););L re44iBtBL;%; Lj1 L;,;,8


rea8

M

M

tLL8

M


M

puli" stati" voi$ sen$re4uest)int s%int r%int st%int rt%intB ts%int re44BB%int n,

@

int i0%j0%t08

'/stem.out.println); -e4uest 4ueue elements eore getting re4uest o :; Lr,8

w#ile)re44rBiBP0,

@

or)t08tn8tLL,

@

i)re44rBiBtstB,

@

'/stem.out.print); ) ; L re44rBiB L; %; L t L;,;,8


rea8

M

111

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M

iiL188

M

re44rBiBst8

Arra/s.sort)re44rB%0%)iL1,,8


'/stem.out.println); ater getting re4uest; ,8

w#ile)re44rBjBP0,

@

or)i08in8iLL,

@

i)re44rBjBtsiB,

@

'/stem.out.print); ) ; L re44rBjB L; %; L i L;,;,8


rea8

M

M

jLL8

M


M

puli" stati" voi$ main)'tring argsB,t#rows 3Ex"eption

@

int i%j%n%repl/%0%temp%108

intB snew int10B8

intB tsnew int10B8

intBB re44new int10B10B8

uere$-ea$er rnew uere$-ea$er)new nput'tream-ea$er)'/stem.in,,8

'/stem.out.println);Enter t#e numer o sites availale;,8


112

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or)i08in8iLL,

@

siBi8

'/stem.out.println);Enter t#e timestamp value or :;L i,8

tsiBnteger.parsent)r.rea$ine),,8

re44iB0BtsiB8

M


'/stem.out.println);'TEsV -Eb!E'T b!E!E';,8

or)i08in8iLL,

@

'/stem.out.println)iL;Ht;L;);LtsiBL;%;LiL;,;,8

M


'/stem.out.println);-Eb!E'TN.......;,8


or)i08in8iLL,

@

'/stem.out.println);T#e pro"ess ; L i L; 'en$ing t#e re4uest to t#e sites ;,8

'/stem.out.println);++++++++++++++++++++++++++++++++++++++++++++++;,8

or)j08jn8jLL,

@

i))iPj, ** )tsiBP0,,

@

'/stem.out.println); T3 :; L j,8


sen$re4uest)i%j%tsiB%tsjB%ts%re44%n,8


M

M

115

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M

'/stem.out.println);-EI............;,8


or)i08in8iLL,

@

'/stem.out.println);'TE ; L iL ; getting repl/ ;,8

'/stem.out.println);+++++++++++++++++++++++++;,8

or)j08jn8jLL,

@

i))iPj, ** )tsiBP0,,

@

'/stem.out.println);etting repl/ rom ; Lj L;:;L ; ) ; L

tsjB L; %;LjL ;, Hn;,8

M

M

M

or)j18jn8jLL,

@

i)tsiB>tsjB,

@

temptsjB8

tsjBtsiB8

tsiBtemp8

M

M

exe"ute"s)i%ts%n%%re44,8

M

M

OUTPUT:

Q:H>java" nontoen.java

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Q:H>java nontoen

Enter t#e numer o sites availale

2

Enter t#e timestamp value or: 0

5

Enter t#e timestamp value or: 1

2

'TEs -Eb!E'T b!E!E'

0 )5%0,1 )2%1,

-Eb!E'TNccccc

T#e pro"ess 0 sen$ing t#e re4uest to t#e sites T3: 1

-e4uest 4ueue elements eore getting re4uest o :1

)2%1,

Ater getting re4uest

)2%1, )5%0,

T#e pro"ess 1 sen$ing t#e re4uest to t#e sites

T3: 0

-e4uest 4ueue elements eore getting re4uest o :0

) 5%0,

Ater getting re4uest

)2%1, )5%0,

-EIcccc..

'TE 0 getting repl/

etting repl/ rom 1:)2%1,

'TE 1 getting repl/

etting repl/ rom 0:)5%0,

ENTE-N C-TCA 'ECT3Nccc.

'TEUs TFE'TAF'

0 )2%1, )5%0,

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1 )2%1, )5%0,

T#e site 1 is in "s

-EEA'Nccc..

-elease message to :0 rom 1

-e4uest bueue !p$ations

'TEUs -Eb!E'T b!E!E'

0 )5.0,

1 )5%0,

RESULT:

T#us t#e java program to implement t#e Non+Toenase$ algorit#m )amportUs

algorit#m, or $istriute$ mutual ex"lusion was written an$ exe"ute$ su""essull/.

Ex No.:15 TO+EN )ASED ALGORITHM

Date: 10 < 2012

AIM:

To write a java program to implement t#e Toen ase$ alogorit#m )'uSui ^asamiUs

algorit#m, or $istriute$ mutual ex"lusion.

ALGORITHM:

Step 1: etting t#e numer o sites rom t#e user

1.1. enerate t#e se4uen"e numer or t#e sites ran$oml/.

1.2. 'ort t#e se4uen"e numer o t#e site in as"en$ing or$er.

1.5. T#e sites #aving outstan$ing se4uen"e numer is allowe$ to enter t#e C' irst.

Step2: -Eb!E'TN:

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2.1. Ea"# site wants to enter C' sen$ re4uest to ot#er site in t#e orm o site i$ se4uen"e

numer

2.2. Ater re"eving t#e re4uest ot#er sites up$ates t#eir re4uest 4ueue an$ sites giving t#e

re4uest an$ t#e site i$ is pla"e$ in toen 4ueue.

Step!: ENTE-N C-TCA 'ECT3N:

5.1. 'ite wit# t#e most outstan$ing re4uest value will enter t#e C' irst.

5.2. t#e site #aving toen is eing in "riti"al se"tion is sen$s t#e toen to t#e outstan$ing

se4uen"e numer ater inis#ing t#e C'.

Step": EKTN TGE C-TCA 'ECT3N:

T#e siteUs i$ w#i"# is exiting t#e C' t#e "orrespon$ing siteUs i$ is remare$ rom t#e toen

4ueue.

PROGRAM:

import java.util.-an$om8

import java.io.78

import java.lang.78

import java.util.Arra/s8

puli" "lass Toenase$

@

puli" stati" voi$ sen$re4)int s%int r%int snumer%intB se4no%intBB rn%int n%int toB%intB t4,

@

int i08

rnsB0Bsnumer8

'/stem.out.println); -e4uest rom ; Ls L ; to ; L rL ;:; L;);LsL;%;L )snumerL1,

L;, Hn;,8

'/stem.out.print);Toen bueue ;L ;Ht;,8

or)i08i)n+1,8iLL,

@

'/stem.out.print) t4iB L ;Ht;,8

M


11=

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OUTPUT:

Q:H3'>java Toenase$

Enter t#e numer o sites availale 5

T#e 'e4uen"e numer or0 is : J

T#e 'e4uen"e numer or1 is : 2

T#e 'e4uen"e numer or2 is : J

2 J J

Toen is in 0 t# site .so T#e site 0 is eing in Criti"al 'e"tion

T#e pro"ess 1 sen$ing t#e re4uest to t#e sites

T3 :0

-e4uest rom 1 to 0:)1%5,

Toen bueue 1 999

T#e -e4uest bueue o 1 is : 5

T3 :2

-e4uest rom 1 to 2:)1%5,

Toen bueue 1 99

T#e -e4uest bueue o 1 is : 5

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T#e pro"ess 2 'en$ing t#e re4uest to t#e sites

T3 :0

-e4uest rom 2 to 0:)2%=,

Toen bueue 1 2

T#e -e4uest bueue o 2 is : =

T3 :1

-e4uest rom 2 to 1:)2%=,

Toen bueue 1 2

T#e -e4uest bueue o 2 is : =

T#e site 0 sen$s t#e toen to 2

T#en site 2 enters Criti"al 'e"tion

T#e toen 4ueue e"omes:

1

RESULT:

T#us t#e java program to implement t#e toenase$ algorit#m )'uSui ^asamiUs algorit#m,

or mutual ex"lusion was written an$ exe"ute$ su""essull/.

OS Lab2012

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