This is shell programming assignment.
It needs to create a file called .std_dbrc contains
STD_DBROOT=${HOME}/class/2031/Assgn3/STD_DB
(which includes all my simple database files)
and I am gonna use this .std_dbrc in my script file (read the data from the database files)
like this: .... (3 Replies)
can we create multiple sockets in a machine with different ip addresses and all port listen to one single port ????
i hav one tool which creates virtual interface and i m using that to create multiple ip addresses in a linux machine and i use thos eip addresses to create multiple sockets and... (1 Reply)
Hii friends,
I am a newbie to unix/shell scripting and got stuck in implementing a functionality.Dear experts,kindly spare some time to bring me out of dark pit :confused:..
My requirement is somewhat wierd,let me explain what i have and what i need to do...
1) there are several excel... (1 Reply)
I am aware that TCP sockets are stream based and a single write may not send all the data. Is this the case with recv as well ?
I am in process of deciding a protocol to handle communication. I wanted some tips as to handle transactions. The data sent / received would be fixed length. Hence... (5 Replies)
hi every one i want to read and write data from cvs file using c program. but my problem is that at run time my data is increasing in both row wise and column wise. that means it is continuously updating in both direction.
is there any way through which i can find the next colum or row for eg... (0 Replies)
I have a series of observations of which one column is sometimes missing (zero):
date temp delta
1977 284.54 29.84
1978 149.82 0
1979 320.71 28.45
1980 176.76 0
1981 854.65 0
1984 817.65 0
1985 990.58 27.98
1986 410.21 0
1987 405.93 0
1988 482.9 0
What I would like to achieve is a... (8 Replies)
Hello people,
I have a question regarding transferring data from one file server to another.
The server is a Solaris 9 box
The old file server is connected via Ethernet cable, and the new file server we are switching is a Fiber channel.
can I use the
dd if=server:/app1 of=server2:/app1
... (2 Replies)
Hi,
I have a large number of data files each containing simple integers from 1 to around 25000 in ascending order. However, they are not in a specific progression; some numbers are missing in each file.
For ex. datfile1 may have the numbers in order 1 2 4 6 7 8 12 ... 24996 24999
while datfile2... (8 Replies)
I need to fix an SQL statement in MySQL that should calculate a field using values from two of the columns and I prefer to do this using set-based programming, ie not procedural. What needs to happen is that in a separate column called "delta" the value of "level" is copied depending on whether... (3 Replies)
Discussion started by: figaro
3 Replies
LEARN ABOUT DEBIAN
iv_task_unregister
iv_task(3) ivykis programmer's manual iv_task(3)NAME
iv_task_register, iv_task_unregister, iv_task_registered - deal with ivykis tasks
SYNOPSIS
#include <iv.h>
struct iv_task {
void *cookie;
void (*handler)(void *);
};
void IV_TASK_INIT(struct iv_task *task);
void iv_task_register(struct iv_task *task);
void iv_task_unregister(struct iv_task *task);
int iv_task_registered(struct iv_task *task);
DESCRIPTION
The functions iv_task_register and iv_task_unregister register, respectively unregister, a task with the current thread's ivykis event
loop. iv_task_registered on a task returns true if that task is currently registered with ivykis.
A task is like a timer, but with an immediate timeout. When a task is registered, unless it is unregistered again first, the callback
function specified by ->handler is guaranteed to be called once, in the thread that the task was registered in, some time after control
returns to the ivykis main loop but before ivykis will sleep for more events, with ->cookie as its first and sole argument. When this hap-
pens, the task is transparently unregistered.
Tasks are mainly used for scheduling code for execution where it is not appropriate to directly run that code in the calling context (for
example, because the current context might be run as a callback function where the caller expects certain conditions to remain invariant
after the callback completes).
The application is allowed to change the ->cookie and ->handler members at any time.
A given struct iv_task can only be registered in one thread at a time, and a task can only be unregistered in the thread that it was regis-
tered from.
There is no limit on the number of tasks registered at once.
See iv_examples(3) for programming examples.
SEE ALSO ivykis(3), iv_examples(3)ivykis 2010-08-15 iv_task(3)