09-09-2008
If you are handling clients on a system that must scale you will use neither. Using non-blocking I/O and a fast event mechanism like epoll or kqueue is a better answer.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
For a project we need to make sure that all php / html files in a certain directory on the webserver are showing advertisments of us.
For example, when you get a website from Lycos, you'll have an advertisement in the right corner.
How to?
As far as I can see, Lycos includes a javascript... (1 Reply)
Discussion started by: valentijnb
1 Replies
2. Shell Programming and Scripting
Hi Friends!!
I have obtained following output from a tool called pdftoxml:
<xml>
<text top="423" left="521" width="333" height="20" font="3">Although the the number of fuzzy rules of a system is </text>
<text top="441" left="500" width="355" height="20" font="3">directly dependant on these... (2 Replies)
Discussion started by: parshant_bvcoe
2 Replies
3. Shell Programming and Scripting
Hi all.
I do have a script "startApp.sh" (app result is a file /opt/extract/appextract.txt)
I have no problems with stopping app
var1=`ps -ef | grep -v grep | grep MyApp | awk '{print $2}'`
kill -9 $var1
What I want to achieve is:
I start app, app is doing some extraction, after... (11 Replies)
Discussion started by: e-l-diablo
11 Replies
4. Shell Programming and Scripting
I have a file which will have rows like shown below,
ST*820*316054716
RMR*IV*11333331009*PO*40.31
REF*IV*22234441009*xsss471-2762
DTM*003*091016
ENT*000006
RMR*IV*2222234444*PO*239.91
REF*IV*1234445451009*LJhjlkhkj471-2762 </SPAN>
DTM*003*
091016
RMR*IV*2223344441009*PO*40.31... (18 Replies)
Discussion started by: Muthuraj K
18 Replies
5. Shell Programming and Scripting
Hello All,
My script is nearly complete, there is just one last piece that needs to be added in.
I need to check for the time, and if it is lets say for example. Sunday at 5:00AM, my script cannot run.
I would assume it would be something like this, parden the terrible pseudocode
... (7 Replies)
Discussion started by: jeffs42885
7 Replies
6. Shell Programming and Scripting
Hi all,
I have to run C++ file using root programming, using following commands:
$root -l
root .L TwoTrees.C++
root TwoTrees t
root t.Loop()
root.q
I wonder if I can write script to do the following.
Thanks
Pooja (12 Replies)
Discussion started by: nrjrasaxena
12 Replies
7. Shell Programming and Scripting
i am stuck with this strange problem..... maybe you can help.
i have one master_file which has two column username and id_number separated by , somewhat like :
cat master_file :
sample,1234567
javacode,4567891
companion,23456719
adamsandler,1237681
tomcruise,56328910
bradpitt,901236781... (9 Replies)
Discussion started by: mukulverma2408
9 Replies
8. UNIX for Dummies Questions & Answers
Below is the sample logfile:
Userids Date Time
acb Checkout time: 2013-11-20 17:00
axy Checkout time: 2013-11-22 12:00
der Checkout time: 2013-11-17 17:00
xyz Checkout time: 2013-11-19 16:00
ddd Checkout time: 2013-11-21 16:00
aaa Checkout... (9 Replies)
Discussion started by: asjaiswal
9 Replies
9. Shell Programming and Scripting
I want to do FTP an Huge XML file to mainframe server using AIX server
Since my file size is huge, i want to split the XML file based on a delimiter , the record delimiter should be set after every 27000 bytes of data
and then do the ftp
This is done becos the data send to the mainframe must... (1 Reply)
Discussion started by: vishwanath001
1 Replies
10. Programming
Hi,
I am working in Visual studio 2008 in which i have written the code in c++,qml,qt.Its a simulator application.
I would like to create a simulator with certain changes. In order to do that i have modified the code with few changes based on the preprocessor condition.
#define... (4 Replies)
Discussion started by: SA_Palani
4 Replies
LEARN ABOUT NETBSD
kfilter_unregister
KFILTER_REGISTER(9) BSD Kernel Developer's Manual KFILTER_REGISTER(9)
NAME
kfilter_register, kfilter_unregister -- add or remove kernel event filters
SYNOPSIS
#include <sys/event.h>
int
kfilter_register(const char *name, struct filterops *filtops, int *retfilter);
int
kfilter_unregister(const char *name);
DESCRIPTION
The kfilter_register() function adds a new kernel event filter (kfilter) to the system, for use by callers of kqueue(2) and kevent(2). name
is the name of the new filter (which must not already exist), and filtops is a pointer to a filterops structure which describes the filter
operations. Both name and filtops will be copied to an internal data structure, and a new filter number will be allocated. If retfilter is
not NULL, then the new filter number will be returned in the address pointed at by retfilter.
The kfilter_unregister() function removes a kfilter named name that was previously registered with kfilter_register(). If a filter with the
same name is later reregistered with kfilter_register(), it will get a different filter number (i.e., filter numbers are not recycled). It
is not possible to unregister the system filters (i.e., those that start with ``EVFILT_'' and are documented in kqueue(2)).
The filterops structure is defined as follows:
struct filterops {
int f_isfd; /* true if ident == filedescriptor */
int (*f_attach)(struct knote *kn);
/* called when knote is ADDed */
void (*f_detach)(struct knote *kn);
/* called when knote is DELETEd */
int (*f_event)(struct knote *kn, long hint);
/* called when event is triggered */
};
If the filter operation is for a file descriptor, f_isfd should be non-zero, otherwise it should be zero. This controls where the kqueue(2)
system stores the knotes for an object.
RETURN VALUES
kfilter_register() returns 0 on success, EINVAL if there's an invalid argument, or EEXIST if the filter already exists,
kfilter_unregister() returns 0 on success, EINVAL if there's an invalid argument, or ENOENT if the filter doesn't exist.
SEE ALSO
kqueue(2), free(9), knote(9), malloc(9)
HISTORY
The kfilter_register() and kfilter_unregister() functions first appeared in NetBSD 2.0.
AUTHORS
The kfilter_register() and kfilter_unregister() functions were implemented by Luke Mewburn <lukem@NetBSD.org>.
BSD
October 23, 2002 BSD