RCS file: header_server2.h,v
Working file: header_server2.h
head: 1.2
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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 *.
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revision 1.2 locked by: root;
date: 2015/03/18 11:36:49; author: root; state: Exp; lines: +1 -1
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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
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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.
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revision 1.2 locked by: root;
date: 2015/03/18 11:36:54; author: root; state: Exp; lines: +18 -4
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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
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description:
read the file disp through main argument.
convert it into integer by using atoi.
and then write it into pipe.
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revision 1.1 locked by: root;
date: 2015/03/16 13:39:29; author: root; state: Exp;
Initial revision
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RCS file: client_sub.c,v
Working file: client_sub.c
head: 1.1
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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.
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revision 1.1 locked by: root;
date: 2015/03/16 13:05:44; author: root; state: Exp;
Initial revision
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RCS file: client_mul.c,v
Working file: client_mul.c
head: 1.1
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description:
same as above
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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
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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
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revision 1.2 locked by: root;
date: 2015/03/18 11:36:58; author: root; state: Exp; lines: +1 -1
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revision 1.1
date: 2015/03/06 08:21:16; author: root; state: Exp;
Initial revision
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RCS file: processing_sub.c,v
Working file: processing_sub.c
head: 1.2
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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.
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revision 1.2 locked by: root;
date: 2015/03/18 11:36:59; author: root; state: Exp; lines: +1 -1
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revision 1.1
date: 2015/03/17 15:02:50; author: root; state: Exp;
Initial revision
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RCS file: processing_mul.c,v
Working file: processing_mul.c
head: 1.2
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total revisions: 2; selected revisions: 2
description:
same as subtraction just changed the operator and names and then write the result into pipe.
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revision 1.2 locked by: root;
date: 2015/03/18 11:37:00; author: root; state: Exp; lines: +1 -1
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revision 1.1
date: 2015/03/17 15:48:15; author: root; state: Exp;
Initial revision
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