RCS file: request.h,v
Working file: request.h
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1;    selected revisions: 1
description:
It contains structure of request.
—————————-
revision 1.1    locked by: root;
date: 2015/12/20 20:01:44;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: adder.c,v
Working file: adder.c
head: 1.4
branch:
locks: strict
root: 1.4
access list:
symbolic names:
keyword substitution: kv
total revisions: 4;    selected revisions: 4
description:
A function for adding obj1 and obj2 which is contained in request received.
—————————-
revision 1.4    locked by: root;
date: 2015/12/20 21:52:27;  author: root;  state: Exp;  lines: +4 -4
Printing changes.
—————————-
revision 1.3
date: 2015/12/20 21:32:16;  author: root;  state: Exp;  lines: +1 -0
Printing mistake corrected.
—————————-
revision 1.2
date: 2015/12/20 21:22:32;  author: root;  state: Exp;  lines: +12 -4
Result is sent to server.
—————————-
revision 1.1
date: 2015/12/20 21:06:23;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: client1.c,v
Working file: client1.c
head: 1.13
branch:
locks: strict
root: 1.13
access list:
symbolic names:
keyword substitution: kv
total revisions: 13;    selected revisions: 13
description:
request.h , stdio.h, fcntl.h included.
argc has 3 arguments
argv has rfdp,wfdp.
Client writes the message.
—————————-
revision 1.13    locked by: root;
date: 2015/12/20 21:52:27;  author: root;  state: Exp;  lines: +9 -12
Printing Changes
—————————-
revision 1.12
date: 2015/12/20 21:46:04;  author: root;  state: Exp;  lines: +2 -2
obj1 and obj2 value changes
—————————-
revision 1.11
date: 2015/12/20 21:43:02;  author: root;  state: Exp;  lines: +1 -1
Printing change.
—————————-
revision 1.10
date: 2015/12/20 21:41:10;  author: root;  state: Exp;  lines: +13 -2
Client reading result from server
—————————-
revision 1.9
date: 2015/12/20 20:50:38;  author: root;  state: Exp;  lines: +1 -1
Request printed.
—————————-
revision 1.8
date: 2015/12/20 20:48:04;  author: root;  state: Exp;  lines: +1 -1
Request sent
—————————-
revision 1.7
date: 2015/12/20 20:41:57;  author: root;  state: Exp;  lines: +1 -1
argv changed to argv[]
—————————-
revision 1.6
date: 2015/12/20 20:40:43;  author: root;  state: Exp;  lines: +5 -5
*** empty log message ***
—————————-
revision 1.5
date: 2015/12/20 20:38:04;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
—————————-
revision 1.4
date: 2015/12/20 20:33:54;  author: root;  state: Exp;  lines: +1 -2
Debugging
—————————-
revision 1.3
date: 2015/12/20 20:32:04;  author: root;  state: Exp;  lines: +2 -1
argc is printed.
—————————-
revision 1.2
date: 2015/12/20 20:27:40;  author: root;  state: Exp;  lines: +1 -0
print statement at starting is added.
—————————-
revision 1.1
date: 2015/12/20 19:55:46;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: client2.c,v
Working file: client2.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1;    selected revisions: 1
description:
It requests for subtration from server.
—————————-
revision 1.1    locked by: root;
date: 2015/12/20 22:11:46;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: client3.c,v
Working file: client3.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1;    selected revisions: 1
description:
It is function for multiplication.
—————————-
revision 1.1    locked by: root;
date: 2015/12/20 22:29:00;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: multiplier.c,v
Working file: multiplier.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1;    selected revisions: 1
description:
Function for multiplier
—————————-
revision 1.1    locked by: root;
date: 2015/12/20 22:09:30;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: server.c,v
Working file: server.c
head: 1.29
branch:
locks: strict
root: 1.29
access list:
symbolic names:
keyword substitution: kv
total revisions: 29;    selected revisions: 29
description:
Server includes header.h,request.h
server creates a pipe(Half duplex)
Server then creates a child.
child is replaced by client.
When pipe(arr) is called , arr[0] has read file descriptor and arr[1]
has write file descriptor.
rfdp and wfdp are passed to child.
server reads the  data written by pipe.
—————————-
revision 1.29    locked by: root;
date: 2015/12/20 22:21:29;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
—————————-
revision 1.28
date: 2015/12/20 22:19:00;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
—————————-
revision 1.27
date: 2015/12/20 22:16:05;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
—————————-
revision 1.26
date: 2015/12/20 22:14:36;  author: root;  state: Exp;  lines: +1 -2
*** empty log message ***
—————————-
revision 1.25
date: 2015/12/20 22:07:12;  author: root;  state: Exp;  lines: +18 -2
Subtractor and multiplier and adder are available operations.
—————————-
revision 1.24
date: 2015/12/20 21:56:07;  author: root;  state: Exp;  lines: +2 -2
Printing changes.
—————————-
revision 1.23
date: 2015/12/20 21:54:17;  author: root;  state: Exp;  lines: +2 -2
Printing changes.
—————————-
revision 1.22
date: 2015/12/20 21:44:51;  author: root;  state: Exp;  lines: +3 -3
Printing change
—————————-
revision 1.21
date: 2015/12/20 21:42:22;  author: root;  state: Exp;  lines: +2 -2
count4 declared.
—————————-
revision 1.20
date: 2015/12/20 21:41:10;  author: root;  state: Exp;  lines: +12 -2
Server writing result to client.
—————————-
revision 1.19
date: 2015/12/20 21:32:16;  author: root;  state: Exp;  lines: +2 -2
*** empty log message ***
—————————-
revision 1.18
date: 2015/12/20 21:30:26;  author: root;  state: Exp;  lines: +12 -5
server read the result and print it.
—————————-
revision 1.17
date: 2015/12/20 21:16:59;  author: root;  state: Exp;  lines: +2 -2
logical error
—————————-
revision 1.16
date: 2015/12/20 21:12:16;  author: root;  state: Exp;  lines: +1 -0
ce
—————————-
revision 1.15
date: 2015/12/20 21:07:57;  author: root;  state: Exp;  lines: +1 -1
fret2 is declared.
—————————-
revision 1.14
date: 2015/12/20 21:06:23;  author: root;  state: Exp;  lines: +35 -5
adder is callled using another pipe and fork.
—————————-
revision 1.13
date: 2015/12/20 20:52:39;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
—————————-
revision 1.12
date: 2015/12/20 20:51:47;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
—————————-
revision 1.11
date: 2015/12/20 20:50:38;  author: root;  state: Exp;  lines: +1 -1
Request printed.
—————————-
revision 1.10
date: 2015/12/20 20:48:04;  author: root;  state: Exp;  lines: +1 -1
Request received.
—————————-
revision 1.9
date: 2015/12/20 20:44:58;  author: root;  state: Exp;  lines: +2 -2
*** empty log message ***
—————————-
revision 1.8
date: 2015/12/20 20:29:14;  author: root;  state: Exp;  lines: +2 -1
ret=wait()
—————————-
revision 1.7
date: 2015/12/20 20:27:40;  author: root;  state: Exp;  lines: +2 -1
print statement at starting is added.
—————————-
revision 1.6
date: 2015/12/20 20:24:08;  author: root;  state: Exp;  lines: +1 -1
client1 is replaced by client (name change in execl).
—————————-
revision 1.5
date: 2015/12/20 20:22:45;  author: root;  state: Exp;  lines: +4 -1
*** empty log message ***
—————————-
revision 1.4
date: 2015/12/20 20:20:38;  author: root;  state: Exp;  lines: +1 -1
Pipe is created before fork.
—————————-
revision 1.3
date: 2015/12/20 20:19:46;  author: root;  state: Exp;  lines: +4 -2
Some print statements added.
—————————-
revision 1.2
date: 2015/12/20 20:16:56;  author: root;  state: Exp;  lines: +1 -0
*** empty log message ***
—————————-
revision 1.1
date: 2015/12/20 19:55:46;  author: root;  state: Exp;
Initial revision
=============================================================================

RCS file: subtractor.c,v
Working file: subtractor.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1;    selected revisions: 1
description:
Function for subtraction.
—————————-
revision 1.1    locked by: root;
date: 2015/12/20 22:09:30;  author: root;  state: Exp;
Initial revision
=============================================================================

Working file: header_server2.h

head: 1.2

branch:

locks: strict

	root: 1.2

access list:

symbolic names:

keyword substitution: kv

total revisions: 2;	selected revisions: 2

description:

include 3 library <stdio.h> , <stdlib.h>
and <unistd.h>

create a function invoke_clients() to invoke the
3 clients simultaneously but actually it's a sequential process.

given the prototype for read_clients() and pass
the two argument one is int which is arrof pipe astruct display * for
reading the request from clients to server.

also include the defination of struct display in
header file. 3 datatype one for char opt and two int oper1 and
opern2.

now introduce processing_results() and pass two
arguments. new arr1* for creating new pipe and struct display *.

----------------------------

revision 1.2	locked by: root;

date: 2015/03/18 11:36:49;  author: root; 
state: Exp;  lines: +1 -1

*** empty log message ***

----------------------------

revision 1.1

date: 2015/03/16 10:26:29;  author: root; 
state: Exp;

Initial revision

RCS file: new_server.c,v

Working file: new_server.c

head: 1.2

branch:

locks: strict

	root: 1.2

access list:

symbolic names:

keyword substitution: kv

total revisions: 2;	selected revisions: 2

description:

we create the *arr and provide the space for
read and write file descriptor means malloc * 6. 3 pipes we create
for 3 clients.

call the invoke_clients() and pass the address
of arr as argument.

declare **ptr and starting address store int ptr
and provide space with malloc.

store the 3 strings in 2D array.

create the pipes for 3 clients.

NOw, fork() is used to create duplicate copy or
new process .

in new process, we use execl() to replace new
process created by fork() with arguement we pass. And we also pass
two argument more read and write file discriptor but before passing
we converted it into string because execl() argument are in const
char *.

sprintf is used to convert int into char.

after this we read the request from client on
server.

then write the request to processing_results
pipes.

now, we created a processing_results() to
process the invoke_clients().

In processing_results() fumction we pass the
arr1 of 6 to create the 3 pipes.

declare the **p and provide space to store the
strings.

create the 3 pipes through for loop.

Now, fork() is used to create a new process. 

In child(new) process, we use execl() function
to replace the current process i.e new process. with arugment we used
in execl and also pass read and write file descriptor in char type
using sprintf.

----------------------------

revision 1.2	locked by: root;

date: 2015/03/18 11:36:54;  author: root; 
state: Exp;  lines: +18 -4

*** empty log message ***

----------------------------

revision 1.1

date: 2015/03/16 11:05:43;  author: root; 
state: Exp;

Initial revision

RCS file: client_sum.c,v

Working file: client_sum.c

head: 1.1

branch:

locks: strict

	root: 1.1

access list:

symbolic names:

keyword substitution: kv

total revisions: 1;	selected revisions: 1

description:

read the file disp through main argument.

convert it into integer by using atoi.

and then write it into pipe.

----------------------------

revision 1.1	locked by: root;

date: 2015/03/16 13:39:29;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: client_sub.c,v

Working file: client_sub.c

head: 1.1

branch:

locks: strict

	root: 1.1

access list:

symbolic names:

keyword substitution: kv

total revisions: 1;	selected revisions: 1

description:

we read the argument through main.

convert it into interger by using atoi before
using it into read and write function.

use struct display a object and using this 'a'
object we store the opt, opern1 and opern2.

and then write the result sub into pipe.

----------------------------

revision 1.1	locked by: root;

date: 2015/03/16 13:05:44;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: client_mul.c,v

Working file: client_mul.c

head: 1.1

branch:

locks: strict

	root: 1.1

access list:

symbolic names:

keyword substitution: kv

total revisions: 1;	selected revisions: 1

description:

same as above

----------------------------

revision 1.1	locked by: root;

date: 2015/03/16 13:33:06;  author: root; 
state: Exp;

RCS file: processing_sum.c,v

Working file: processing_sum.c

head: 1.2

branch:

locks: strict

	root: 1.2

access list:

symbolic names:

keyword substitution: kv

total revisions: 2;	selected revisions: 2

description:

read the rd and wd file descriptor from server
through argv argument.

convert argv[1] and argv[2] to rfd and wfd
integer.

read the content and print the content in
processing_sum file.

then write the result on the server pipe

----------------------------

revision 1.2	locked by: root;

date: 2015/03/18 11:36:58;  author: root; 
state: Exp;  lines: +1 -1

*** empty log message ***

----------------------------

revision 1.1

date: 2015/03/06 08:21:16;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: processing_sub.c,v

Working file: processing_sub.c

head: 1.2

branch:

locks: strict

	root: 1.2

access list:

symbolic names:

keyword substitution: kv

total revisions: 2;	selected revisions: 2

description:

read write file discriptor is taken by main
argument

convert it into integer rfd and wfd.

by using atoi.

read the struct display through address and
print the opt, opern1, opern2.

and write the subtraction result into the
server-processing pipe.

----------------------------

revision 1.2	locked by: root;

date: 2015/03/18 11:36:59;  author: root; 
state: Exp;  lines: +1 -1

*** empty log message ***

----------------------------

revision 1.1

date: 2015/03/17 15:02:50;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: processing_mul.c,v

Working file: processing_mul.c

head: 1.2

branch:

locks: strict

	root: 1.2

access list:

symbolic names:

keyword substitution: kv

total revisions: 2;	selected revisions: 2

description:

same as subtraction just changed the operator
and names and then write the result into pipe.

----------------------------

revision 1.2	locked by: root;

date: 2015/03/18 11:37:00;  author: root; 
state: Exp;  lines: +1 -1

*** empty log message ***

----------------------------

revision 1.1

date: 2015/03/17 15:48:15;  author: root; 
state: Exp;

Initial revision

=============================================================================

RCS file: request_client.c,v
Working file: request_client.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this is the first requesting client.
Sending request for the addtion.
—————————-
revision 1.1 locked by: root;
date: 2015/03/05 00:08:11; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: request_client_mul.c,v
Working file: request_client_mul.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this is second requesting client
sending request for the multiplication.
—————————-
revision 1.1 locked by: root;
date: 2015/03/05 00:08:19; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: request_client_sub.c,v
Working file: request_client_sub.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this is the third requesting client
sending request for the subtraction
—————————-
revision 1.1 locked by: root;
date: 2015/03/05 00:08:19; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: adder.c,v
Working file: adder.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this is first processing client
here arithmetic operation”ADDITION” is performed
—————————-
revision 1.1 locked by: root;
date: 2015/03/05 00:08:19; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: mul.c,v
Working file: mul.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this is the second processing client
here arithmetic operation “MULTIPLICATION” is performed.
—————————-
revision 1.1 locked by: root;
date: 2015/03/05 00:08:19; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: sub.c,v
Working file: sub.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this is the third processing client.
Here arithmetic operation “SUBTRACTION” is performed.
—————————-
revision 1.1 locked by: root;
date: 2015/03/05 00:08:19; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: main.c,v
Working file: main.c
head: 1.2
branch:
locks: strict
root: 1.2
access list:
symbolic names:
keyword substitution: kv
total revisions: 2; selected revisions: 2
description:
pipes are used to create a inter process communication
two file descriptors are created.one for read and other for write.
—————————-
revision 1.2 locked by: root;
date: 2015/02/27 17:28:11; author: root; state: Exp; lines: +3 -3
this is the main program we have initiated a execl program call
we have taken data from the user end and write it into another process.
—————————-
revision 1.1
date: 2015/02/27 17:08:22; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: new.c,v
Working file: new.c
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
here arithmetic operations are performed
we have used switch statements
—————————-
revision 1.1 locked by: root;
date: 2015/02/27 17:12:18; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: new.c,v
Working file: new.c
head:
branch:
locks: strict
access list:
symbolic names:
keyword substitution: kv
total revisions: 0
description:
=============================================================================

RCS file: header.h,v
Working file: header.h
head: 1.1
branch:
locks: strict
root: 1.1
access list:
symbolic names:
keyword substitution: kv
total revisions: 1; selected revisions: 1
description:
this includes header files
different libraries used in our program
—————————-
revision 1.1 locked by: root;
date: 2015/02/27 17:08:22; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: main.c,v
Working file: main.c
head: 1.2
branch:
locks: strict
root: 1.2
access list:
symbolic names:
keyword substitution: kv
total revisions: 2; selected revisions: 2
description:
this is the main program we have initaiated a execl program call
we have taken data from the user end and write it into another process.
—————————-
revision 1.2 locked by: root;
date: 2015/02/27 17:28:11; author: root; state: Exp; lines: +3 -3
*** empty log message ***
—————————-
revision 1.1
date: 2015/02/27 17:08:22; author: root; state: Exp;
Initial revision
=============================================================================

RCS file: new.c,v
Working file: new.c
head: 1.9
branch:
locks: strict
root: 1.9
access list:
symbolic names:
keyword substitution: kv
total revisions: 9; selected revisions: 9
description:
here result is calculated.
—————————-
revision 1.3 locked by: root;
date: 2015/02/27 18:16:21; author: root; state: Exp; lines: +1 -1
result is transferred to the main program.
—————————-
revision 1.2
date: 2015/02/27 18:14:02; author: root; state: Exp; lines: +1 -1
error resolved
—————————-
revision 1.1
date: 2015/02/27 17:57:28; author: root; state: Exp;
Initial revision
=============================================================================