01-07-2013
It's still better practice to log it first, even if you want to filter or compress it later, so event alerts are not lost.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi All,
I am facing a vague issue while trying to make two process talk to each
other using named pipe.
read process
=========
The process which reads, basically creates FIFO using
mkfifo - ret_val = mkfifo(HALF_DUPLEX, 0666);) func.
It then opens the pipe using open func - fd =... (1 Reply)
Discussion started by: sharanbr
1 Replies
2. Programming
Hi All,
I am facing a vague issue while trying to make two process talk to each
other using named pipe.
read process
=========
The process which reads, basically creates FIFO using
mkfifo - ret_val = mkfifo(HALF_DUPLEX, 0666) func.
It then opens the pipe using open func - fd = open... (2 Replies)
Discussion started by: sharanbr
2 Replies
3. UNIX for Advanced & Expert Users
Hey folks,
i need communicate between 2 processes in a reliable manner. The information delivery has to be guarenteed. I thought about proc 2 sending a signal to proc 1 when information has being written to disc and wirte() has been verified (sync/flush). The IPC method for the data is named... (4 Replies)
Discussion started by: heck
4 Replies
4. UNIX for Dummies Questions & Answers
Gurus,
I've a File Transaction Server, which communicates with other servers and performs some processing.It uses many Named PIPE's.
By mistake i copied a named PIPE into a text file.
I heard that PIPE files shouldn't be copied.Isn't it?
Since it's a production box, i'm afraid on... (2 Replies)
Discussion started by: Tamil
2 Replies
5. UNIX for Dummies Questions & Answers
Can someone explain to me the working of fifo() system call using simple C programs so that I can implement them in the UNIX environement? (1 Reply)
Discussion started by: lvkchaitanya
1 Replies
6. UNIX for Advanced & Expert Users
I did
cat < myFile >> myPipe
I was hoping that if I did ls -l, myPipe would now be holding the contents of myFile, and would be the same size. But it was 0.
Also strange was that when I did the command above, cat did not return control back to the shell. Why?
thanks (4 Replies)
Discussion started by: JamesByars
4 Replies
7. Shell Programming and Scripting
I would like to pipe (redirect ? - what is the right term?) the output of my script to a file named with the current date.
If I run this at a command prompt:
date +'%Y%m%d"
...it returns "20110429"
OK, that's good... so I try:
./script.sh > "'date +%Y%m%d'.csv"
I get a file... (1 Reply)
Discussion started by: landog
1 Replies
8. Shell Programming and Scripting
Hi,
I want to use a Named pipe to get input from a growing file for further processing. When I prototype this scenario using a while loop, the data is not written to the named pipe.
This the script I use to get data into the Named pipe:
#!/bin/ksh
mkfifo pipe
while (( n <= 10 ))
do
echo... (2 Replies)
Discussion started by: sudvishw
2 Replies
9. Shell Programming and Scripting
Hi,
I am getting data into a Named pipe. Does Named pipe have any size restriction; I know it does not have any storage and it just passes on the data to the next process.
I want to know, if there will be a difference in the Named pipe performance if the data input is more. (I am using DB2... (1 Reply)
Discussion started by: sudvishw
1 Replies
10. UNIX for Dummies Questions & Answers
Ok, I can't seem to figure this out or find anything on the web about this.
I'm on Sun Solaris, UNIX.
I have the following test script:
#!/bin/ksh
touch test.file
LOG=./tmp.log
rm -f ${LOG}
PIPE=./tmp.pipe
mkfifo ${PIPE}
trap "rm -f ${PIPE}" EXIT
tee -a ${LOG} < ${PIPE} &
... (17 Replies)
Discussion started by: Ditto
17 Replies
LEARN ABOUT SUSE
sdl_seteventfilter
SDL_SetEventFilter(3) SDL API Reference SDL_SetEventFilter(3)
NAME
SDL_SetEventFilter - Sets up a filter to process all events before they are posted to the event queue.
SYNOPSIS
#include "SDL.h"
void SDL_SetEventFilter(SDL_EventFilter filter);
DESCRIPTION
This function sets up a filter to process all events before they are posted to the event queue. This is a very powerful and flexible fea-
ture. The filter is prototyped as:
typedef int (*SDL_EventFilter)(const SDL_Event *event);
If the filter returns 1, then the event will be added to the internal queue. If it returns 0, then the event will be dropped from the
queue. This allows selective filtering of dynamically.
There is one caveat when dealing with the SDL_QUITEVENT event type. The event filter is only called when the window manager desires to
close the application window. If the event filter returns 1, then the window will be closed, otherwise the window will remain open if pos-
sible. If the quit event is generated by an interrupt signal, it will bypass the internal queue and be delivered to the application at the
next event poll.
Note:
Events pushed onto the queue with SDL_PushEvent or SDL_PeepEvents do not get passed through the event filter.
Note:
Be Careful! The event filter function may run in a different thread so be careful what you do within it.
SEE ALSO
SDL_Event, SDL_GetEventFilter, SDL_PushEvent
SDL
Tue 11 Sep 2001, 22:59 SDL_SetEventFilter(3)