Login or Register to Ask a Question and Join Our Community


Programming

sychronize process using pipe?

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Programming sychronize process using pipe?
# 1  
Old 02-20-2006
sychronize process using pipe?
can pipe sychronize thread or process? because I'm trying to create 5 thread or process that can take an integer value and display it. each time a thread display the value, it has to be decrement it by 1 until the value has reach 0. The problem that I'm having is how can that integer value be transfer to those 5 process or thread for those 5 thread needs to be running concurrently.Do I just fork() 5 thread first??..I'm really confuse on this...

sorry for my bad grammer..
Last edited by saipkjai; 02-20-2006 at 06:30 AM..
# 2  
Old 02-20-2006
It sounds more like you need shared memory, keep your data in the shared memory segment. fork() makes a child process not a thread.

What are you trying to do - this sounds either like you're trying to learn C or doing homework.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Using pipe command between process and concatenate

Dear all, I use a pipe command to assign a variable: $ v_LstStdCdhId=$(cat Bteq_Xport_GetLstStdViewToBuild__1274.txt | grep 'CD/39/AT/CDH_BV_ODS'|cut -d"/" -f1) $ echo "${v_LstStdCdhId}" 43 49 My aim is to concatenate for each line of the variable v_LstStdCdhId the character "/" in... (3 Replies)
Discussion started by: dae
3 Replies

2. Shell Programming and Scripting

How to ignore Pipe in Pipe delimited file?

Hi guys, I need to know how i can ignore Pipe '|' if Pipe is coming as a column in Pipe delimited file for eg: file 1: xx|yy|"xyz|zzz"|zzz|12... using below awk command awk 'BEGIN {FS=OFS="|" } print $3 i would get xyz But i want as : xyz|zzz to consider as whole column... (13 Replies)
Discussion started by: rohit_shinez
13 Replies

3. Shell Programming and Scripting

Cannot make pipe for process substitution: Too many open files

Hi, I've came across an issue with a script I've been writing to check DHCP addresses on an Solaris system, the script has been running reasonably well, until it hit the following problem: ./sub_mon_v2: redirection error: cannot duplicate fd: Too many open files ./sub_mon_v2: cannot make... (3 Replies)
Discussion started by: CiCa
3 Replies

4. Programming

Communicate with multiple process using named pipe

how to read and write on pipes to communicate with each other? (5 Replies)
Discussion started by: nimesh
5 Replies

5. Shell Programming and Scripting

Replace pipe with Broken Pipe

Hi All , Is there any way to replace the pipe ( | ) with the broken pipe (0xA6) in unix (1 Reply)
Discussion started by: saj
1 Replies

6. UNIX for Dummies Questions & Answers

No process to read data written to a pipe on AIX

We use SAP application cluster on AIX. Communication between 2 of its instances is failing randomly with the following error: java.net.SocketException: There is no process to read data written to a pipe. The above error causes a cluster restart if an important communication fails. Can... (0 Replies)
Discussion started by: RoshniMehta
0 Replies

7. Shell Programming and Scripting

Can I pipe stderr to another process

Hi there, I was wondering if it was possible to pipe stderr to another process. I need to eval commands given as arguments and I would like to redirect stderr to another process. I can redirect stderr to a file like this... toto:~$ command="one=1" toto:~$ eval $command 2> error toto:~$... (5 Replies)
Discussion started by: chebarbudo
5 Replies

8. AIX

Tape drive problem - no process to read data written to a pipe

Hi Everyone, The machine I'm working on is an AIX 5.3 LPAR running on a P650. oslevel -r shows 5300-08. I'm trying to take a backup to a SCSI tape drive, which has been working up until this point. I know of nothing that has changed recently to cause this problem. But when I try to take a... (0 Replies)
Discussion started by: need2bageek
0 Replies

9. Programming

Two way Pipe Process

Hi.. I am hoping someone could assist me with the pipe program I wrote below. I want to have communication from parent to child and then child to parent.. Is my logic right? int p,p1; pipe(p); pipe(p1); pid_t pid = fork(); if(pid == 0) { close(p); close(p1); dup2(p,0);... (1 Reply)
Discussion started by: therome
1 Replies

10. UNIX for Advanced & Expert Users

AIX 5.3 - There is no process to read data written to a pipe

I have the following code which works on AIX 4.3 but fails at times on AIX 5.3 with: cat: 0652-054 cannot write to output. There is no process to read data written to a pipe. validator="${validator_exe} ${validator_parms}" cmd_line="${CAT} ${data_file} | ${validator}... (6 Replies)
Discussion started by: vigsgb
6 Replies
Login or Register to Ask a Question