As far as I known, kqueue/kevent model can be used to improve the efficiency of systems event dispatching. I m wondering whether kqueue/kevent is same as the real-time OS event model. I also want to know when writing multiplexing app in real-time OS, what APIs need to be used for multiplexing socket I/O and signals dispatching, the old way is select/poll and signals in most Unix systems.
# date +%s -d "Mon Feb 11 02:26:04"
1360567564
# perl -e 'print scalar localtime(1360567564), "\n";'
Mon Feb 11 02:26:04 2013
the epoch conversion is working fine. but one of my application needs 13 digit epoch time as input
1359453135154
rather than 10 digit epoch time 1360567564... (3 Replies)
Hi
Not sure if this can be achieved by unix , but still would like to know if there is any way by which I can do the below given logic
cat sam1 > out1
cat sam2 > out2
when either one of this finished the the next file shd be written in that file, meaning
cat sam3 >> out1/out2... (2 Replies)
Dear experts,
I have an epoch time input file such as : -
1302451209564
1302483698948
1302485231072
1302490805383
1302519244700
1302492787481
1302505299145
1302506557022
1302532112140
1302501033105
1302511536485
1302512669550
I need the epoch time above to be converted into real... (4 Replies)
Hi friends,
I am new to solaris and looking for a job, when ever i attend interview i get most of the questions on real time problems, every one sak me the same questions what are the problems you face daily.. and what are the types?
i know few like, disk extension,swap memory increasing,... (2 Replies)
Newbie question:
I wrote korn shell script that lets me connect to a cisco switch thru telnet from sun server. I'm wodering if or what command i would use to capture info that is being sent to standard output when the script is running. Putting part of my script below and results.
#!/bin/ksh... (2 Replies)
hi all :confused:
i am wondering if there is a way to convert from EPOCH time to the standard tim, may be using a script or some thing else???????
thanks............................ (5 Replies)
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