Hi,
I need to monitor a log file for a certain string ("Phase 2 ended") which indicates that the job which creates the log file has finished loading its data file. Once the string "Phase 2 ended" is found in the log file I would then like to stop checking that log and check to see if another... (3 Replies)
I am looking for advice on a router. I am new to Linux and am trying to use Limewire and Ktorent and can make no connection. Limewire indicates I have a firewall. I have a Linksys router WRK54G and my guess is that is the problem. I have spent hours upon hours trying to get it to work using info... (0 Replies)
Hi,
I have a file generated like this -
1. Fire SQL and store the formatted output in a temp file
echo "select path, empid, age from emp_tbl" | /usr/sql emp_db 2 > count_file | grep vol > tempFile
2. The tempFile looks like this after the above statement
/vol/emp1 0732 ... (9 Replies)
Dear all,
I have encountered some problem here. I prompt the user for input and store it into a data file, eg. key in name and marks so the data file will look like this
andrew 80
ben 75
and the next input is carine 90. So the problem here is i want to print... (2 Replies)
Hi guys, I am a newbie here :wall:
I need a script that can search for a file in a directory and copy the contents of that file in a new file.
Please help me. :confused: Thanks in advance~ (6 Replies)
without using conventional file searching commands like find etc, is it possible to locate a file if i just know that the file that i'm searching for contains a particular text like "Hello world" or something? (5 Replies)
Hi,
I have received an application that stores some properties in a file. The existing struct looks like this:
struct TData
{
UINT uSizeIncludingStrings;
// copy of Telnet data struct
UINT uSize;
// basic properties:
TCHAR szHost; //defined in Sshconfig
UINT iPortNr;
TCHAR... (2 Replies)
Hello,
I have some tab delimited text data,
file: final_temp1
aname val
NAME;r'(1,) 3.28584
r'(2,)<tab>
NAME;r'(3,) 6.13003
NAME;r'(4,) 4.18037
r'(5,)<tab>
You can see that the data is incomplete in some cases. There is a trailing tab after the first column for each incomplete row. I... (2 Replies)
Dear all,Zabbix version : 2.4 (yes, I know, upgrading soon - honest)
Server OS version : CentOS 6, 64-bit (CentOS 7 with the Zabbix upgrade)I've got a large log file that I would like to read by an external process. It's basically the same as reading the item value on a web-page. I have... (5 Replies)
Hello,
I have a src code file where I need to uncomment many lines.
The lines I need to uncomment look like,
C CALL l_r(DESNAME,DESOUT, 'Gmax', ESH(10), NO_APP, JJ)
The comment is the "C" in the first column. This needs to be deleted so that there are 6 spaces preceding "CALL".... (7 Replies)
Discussion started by: LMHmedchem
7 Replies
LEARN ABOUT CENTOS
set_robust_list
GET_ROBUST_LIST(2) Linux System Calls GET_ROBUST_LIST(2)NAME
get_robust_list, set_robust_list - get/set list of robust futexes
SYNOPSIS
#include <linux/futex.h>
#include <syscall.h>
long get_robust_list(int pid, struct robust_list_head **head_ptr,
size_t *len_ptr);
long set_robust_list(struct robust_list_head *head, size_t len);
Note: There are no glibc wrappers for these system calls; see NOTES.
DESCRIPTION
The robust futex implementation needs to maintain per-thread lists of robust futexes which are unlocked when the thread exits. These lists
are managed in user space; the kernel is notified about only the location of the head of the list.
The get_robust_list() system call returns the head of the robust futex list of the thread whose thread ID is specified in pid. If pid is
0, the head of the list for the calling thread is returned. The list head is stored in the location pointed to by head_ptr. The size of
the object pointed to by **head_ptr is stored in len_ptr.
The set_robust_list() system call requests the kernel to record the head of the list of robust futexes owned by the calling thread. The
head argument is the list head to record. The len argument should be sizeof(*head).
RETURN VALUE
The set_robust_list() and get_robust_list() system calls return zero when the operation is successful, an error code otherwise.
ERRORS
The set_robust_list() system call can fail with the following error:
EINVAL len does not match the size of structure struct robust_list_head expected by kernel.
The get_robust_list() system call can fail with the following errors:
EPERM The calling process does not have permission to see the robust futex list of the thread with the thread ID pid, and does not have
the CAP_SYS_PTRACE capability.
ESRCH No thread with the thread ID pid could be found.
EFAULT The head of the robust futex list can't be stored at the location head.
VERSIONS
These system calls were added in Linux 2.6.17. No library support is provided; use syscall(2).
NOTES
These system calls are not needed by normal applications. No support for them is provided in glibc. In the unlikely event that you want
to call them directly, use syscall(2).
A thread can have only one robust futex list; therefore applications that wish to use this functionality should use the robust mutexes pro-
vided by glibc.
SEE ALSO futex(2)
Documentation/robust-futexes.txt and Documentation/robust-futex-ABI.txt in the Linux kernel source tree
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2012-07-13 GET_ROBUST_LIST(2)