12-15-2009
"If Receive() does a lot of processing before actually altering or using the object members in any way, most of that could happen concurrently, but if all it does is update the object, almost nothing should happen concurrently, making the threads mostly pointless."
Can u please elaborate this point...
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Can anyone explain me how to use pthread_key_create() , pthread_setspecific(), pthread_getspecific() and pthread_key_delete () routines in pthreads.
Kindly state by an example. (3 Replies)
Discussion started by: S.P.Prasad
3 Replies
2. Programming
Does any one no of some good web site which will explain about how to program using pthreads in a UNIX enviroment? (6 Replies)
Discussion started by: fishman2001
6 Replies
3. Programming
howcome that pthtreads spawn 2 extra processes?
I'm kind of new with pthreads but fork() did not act like this.
Anyone who can give me a technical explanation of what happends with mother / daughter processes?
Best regards Esaia. (2 Replies)
Discussion started by: Esaia
2 Replies
4. Programming
I have created a thread program, it is attached. My problem is that I need to loop this program multiple times, and basically reset everything including the threads created previously. I try to loop the program, the first run is fine, as always, but the second run of the program, the initialize... (0 Replies)
Discussion started by: justgotthis
0 Replies
5. HP-UX
Hi!
I'm linking my hpux code using -lpthread (gcc), yet it references libpthread_tr.1,
the debug version of the pthread lib. How do I force it to use pthreads?
Thanks, :) (3 Replies)
Discussion started by: zackz
3 Replies
6. Programming
Hi all, I have a query about multithreading. What I would like to do is, at the start of my main update() function, start a couple of threads in parallel, once they are all complete carry on with my main update function.
void update() {
thread1->update(); // fluid solver
... (3 Replies)
Discussion started by: memoid
3 Replies
7. UNIX for Advanced & Expert Users
Hi,
Can you please give me a suitable reference to learn multithreading programming in C in UNIX?
Thanks (3 Replies)
Discussion started by: naan
3 Replies
8. Shell Programming and Scripting
Hi
I need to insert 1million records into MySQL database, but it is taking lot of time as there is no bulk insert support.
I want to spawn 10 processes which will insert 100k records each parallely.
Can somebody help me with a example program to execute this task through shell scripting. (5 Replies)
Discussion started by: sach_roger
5 Replies
9. Programming
I take this question of the The Linux Programming Interface: A Linux and Unix System Programming page 652 exercise 30.1
I want someone to explain the under line statement because it sounds complex to me couldn't understand anything
30-1 Modify the program (thread_incr.c) so that each loop in... (3 Replies)
Discussion started by: fwrlfo
3 Replies
LEARN ABOUT SUSE
mod-active
MOD-ACTIVE(8) InterNetNews Documentation MOD-ACTIVE(8)
NAME
mod-active - Batch processing of newsgroups creation and removal commands
SYNOPSIS
mod-active [ctlinnd-command-file ...]
DESCRIPTION
mod-active is a Perl script that updates the active file based on its input lines of ctlinnd "newgroup", "rmgroup" and "changegroup"
commands. It pauses the server briefly while the existing active file is read and rewritten, which not only keeps innd from updating the
active file but also locks against other instances of mod-active.
The script must be run as the news user.
The input to mod-active can come either from one or more ctlinnd-command-file files named on the command line, or from the standard input.
Typically its input is the output from the docheckgroups or actsync commands. Every line which contains the string "ctlinnd newgroup",
"ctlinnd rmgroup", or "ctlinnd changegroup", optionally preceded by whitespace and/or the path to ctlinnd, is noted for the update.
Redundant commands, such as a newgroup directive for a group that already exists, are silently ignored. All other lines in the input are
also silently ignored. After the new active file has been generated, the existing one is renamed to active.old and the new one is moved
into place. The script then displays the differences between the two files. Any groups that were added to the active file are also added
to the active.times file with the string "checkgroups-update".
Please note that no syntax checking is performed on group names by mod-active.
BUGS
Though innd is paused while mod-active works, it is not inconceivable that there could be a conflict if something else tries to update the
active file during the relatively short time that mod-active is working. The two most realistic ways for this to happen are either by an
administrator concurrently doing a manual ctlinnd command, or by innd receiving a control message, then mod-active pausing the server, then
the control message handler script that innd forked running its own ctlinnd command while mod-active is working. Note that such scenarios
are very unlikely to happen.
HISTORY
Written by David C Lawrence <tale@isc.org> for InterNetNews. Converted to POD by Julien Elie.
SEE ALSO
active(5), active.times(5), actsync(8), ctlinnd(8), docheckgroups(8), innd(8).
INN 2.5.2 2009-05-21 MOD-ACTIVE(8)