John Trigg
Sat, 20 Oct 2007 14:20:19 -0500
As a follow-on to Richard's description of determinism and its importance to a CEP architecture and how it is an inherent characteristic of Apama, an interesting piece from Hans Gilde on the potential downfalls when determinism (and many other issues) are not considered in an event replay solution http://hansgilde.wordpress.com/2007/...d-bi-using-ep/
Hi All,
We've a VDI infrastructure in AWS (AWS workspaces) and we're planning to automate the process of provisioning workspaces. Instead of going to GUI console, and launching workspaces by selecting individual users is little time consuming. Thus, I want to create them in bunches from AWS CLI... (6 Replies)
Hi,
I have 80 large files, from which I want to get a specific value to run a Bash script. Firstly, I want to get the part of a file which contains this:
Name =A
xxxxxx
yyyyyy
zzzzzz
aaaaaa
bbbbbb
Value = 57
This is necessary because in a file there are written more lines which... (6 Replies)
Hi there,
I am lil confused with the following issue.
I have a File, which has the following header: IMSHRATE_043008_101016
a sample detailed record is :9820101 A982005000CAVG030108000000000000010169000MAR 2008
9820102 MAR 2008 D030108
... (1 Reply)
Ok well this isn't homework or classwork, I have been done with school for many years. I offered to help my co-worker who's daughter needs help. I didn't realize I had got rid of all of my UNIX books until after I agreed to help. (3 Replies)
GETPAGESIZE(2) Linux Programmer's Manual GETPAGESIZE(2)NAME
getpagesize - get memory page size
SYNOPSIS
#include <unistd.h>
int getpagesize(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
getpagesize(): _BSD_SOURCE || _XOPEN_SOURCE >= 500
DESCRIPTION
The function getpagesize() returns the number of bytes in a page, where a "page" is the thing used where it says in the description of
mmap(2) that files are mapped in page-sized units.
The size of the kind of pages that mmap(2) uses, is found using
#include <unistd.h>
long sz = sysconf(_SC_PAGESIZE);
(most systems allow the synonym _SC_PAGE_SIZE for _SC_PAGESIZE), or
#include <unistd.h>
int sz = getpagesize();
CONFORMING TO
SVr4, 4.4BSD, SUSv2. In SUSv2 the getpagesize() call is labeled LEGACY, and in POSIX.1-2001 it has been dropped; HP-UX does not have this
call. Portable applications should employ sysconf(_SC_PAGESIZE) instead of this call.
NOTES
Whether getpagesize() is present as a Linux system call depends on the architecture. If it is, it returns the kernel symbol PAGE_SIZE,
whose value depends on the architecture and machine model. Generally, one uses binaries that are dependent on the architecture but not on
the machine model, in order to have a single binary distribution per architecture. This means that a user program should not find
PAGE_SIZE at compile time from a header file, but use an actual system call, at least for those architectures (like sun4) where this depen-
dency exists. Here libc4, libc5, glibc 2.0 fail because their getpagesize() returns a statically derived value, and does not use a system
call. Things are OK in glibc 2.1.
SEE ALSO mmap(2), sysconf(3)COLOPHON
This page is part of release 3.25 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 2007-07-26 GETPAGESIZE(2)
