9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hii...
i am a biginner....and i have linux source code ,downloaded from some website ,a compressed file on windows and dont know how do compile them..... (4 Replies)
Discussion started by: M K Raju
4 Replies
2. Linux
I need the source code of fedora.
plz plz plz help me........... (1 Reply)
Discussion started by: neh
1 Replies
3. Shell Programming and Scripting
Hi,
I want to remove the following code from Source files (or replace the code with empty.) from all the source files in given directory.
finally {
if (null != hibernateSession && hibernateSession.isOpen()) {
//hibernateSession.close();
}
}
It would be great if the script has... (2 Replies)
Discussion started by: hareeshram
2 Replies
4. Shell Programming and Scripting
Unix is written in C. From where u can see the source code of unix or linux (1 Reply)
Discussion started by: pritish.sas
1 Replies
5. Linux
Hello Everyone,
I've been programming using C for somtime, and now I want to involve myself in Linux OS. I've decided to study the details of the Fedora code,but I don't know where I can download it.Any suggestions as how to study the code and about X window are also helpful.
Thanks in advance. (3 Replies)
Discussion started by: enoch99
3 Replies
6. Shell Programming and Scripting
Can somebody give me the link to get the source code of BASH? (1 Reply)
Discussion started by: bhargava
1 Replies
7. Programming
Hi all,
I want to know how ls was implemented in linux.;
How to view the source code? filename/sitename...?
thanks (1 Reply)
Discussion started by: linuxer_rh
1 Replies
8. Programming
i am looking for vmstat source code or a listing of the kernel symbols that vmstat uses in the knlist subroutine. Interested in getting vmstat stats from a c program using knlist subroutine, but i dont know what the names of the kernel symbols are that i need to access.
thanks in advance::) (2 Replies)
Discussion started by: briansmith40
2 Replies
9. UNIX for Dummies Questions & Answers
Hello,
I'm wondering if anyone out there have experience using the SCCS source code in Unix? If so, can you recommend a good (user friendly) SCCS book for beginner users.
Thanks! (3 Replies)
Discussion started by: Mary
3 Replies
nice(2) System Calls nice(2)
NAME
nice - change priority of a process
SYNOPSIS
#include <unistd.h>
int nice(int incr);
DESCRIPTION
The nice() function allows a process to change its priority. The invoking process must be in a scheduling class that supports the nice().
The nice() function adds the value of incr to the nice value of the calling process. A process's nice value is a non-negative number for
which a greater positive value results in lower CPU priority.
A maximum nice value of (2 * NZERO) -1 and a minimum nice value of 0 are imposed by the system. NZERO is defined in <limits.h> with a
default value of 20. Requests for values above or below these limits result in the nice value being set to the corresponding limit. A nice
value of 40 is treated as 39.
Calling the nice() function has no effect on the priority of processes or threads with policy SCHED_FIFO or SCHED_RR.
Only a process with the {PRIV_PROC_PRIOCNTL} privilege can lower the nice value.
RETURN VALUES
Upon successful completion, nice() returns the new nice value minus NZERO. Otherwise, -1 is returned, the process's nice value is not
changed, and errno is set to indicate the error.
ERRORS
The nice() function will fail if:
EINVAL The nice() function is called by a process in a scheduling class other than time-sharing or fixed-priority.
EPERM The incr argument is negative or greater than 40 and the {PRIV_PROC_PRIOCNTL} privilege is not asserted in the effective set of
the calling process.
USAGE
The priocntl(2) function is a more general interface to scheduler functions.
Since -1 is a permissible return value in a successful situation, an application wishing to check for error situations should set errno to
0, then call nice(), and if it returns -1, check to see if errno is non-zero.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
nice(1), exec(2), priocntl(2), getpriority(3C), attributes(5), privileges(5), standards(5)
SunOS 5.11 1 Apr 2004 nice(2)