I'm writing a small script thats purpose is to validate a single command line argument to make sure it is an integer. Also acceptable are a leading "+" or "-", but no more than one.
Example: "5" "-2" "+4" are all valid
If its invalid I simply print out a message saying so, otherwise I... (2 Replies)
my pragram runs with 3 threads, 2 work threads, one main thread. the 2 work threads run with the same mode and the same code. but now, one of the work thread can't work, and it uses the cpu more than 80%, sometimes uses 100% cpu resource. the another work thread work well.
when I viewed the HP... (2 Replies)
I am using gcc3.3.5 on solaris2.7. Its a 64 bit compilation
I am compiling a file 'plugin.cpp'. It includes mach.h and the complation gives the following error.
-----------------------------------------------------------------
mach.h error: conflicting
types for `typedef vx_u32_t... (0 Replies)
Hi I've been searching google and have not found what egrep -c means. Does anyone know where I can get a cheat sheet or what that -c means?
thanks,
Linda (2 Replies)
Hello,
Why is this not returning files containing the string in the var $files?
files=`ls /dir1/dir_level2/dir_level3 | egrep "catch \["`
files=`ls /dir1/dir_level2/dir_level3` this by itself returns a list of files which I thought could be sent through grep or egrep to look for matches.
... (5 Replies)
Hi Guys,
we have a shell script which basically query the Database which retrieves huge data and use the data with "egrep" .
Now there is some data which contains characters like "abc)" and the same is used like below :
"egrep (.+\|GDPRAB16\|GDPR/11702 96 abc)\|$ temp.txt"
now while... (7 Replies)
Hi
I am trying to run CMD that combining EGREP and PERL in multiple files
cat *07:00.22-12-13.txt | egrep" NAME| perl -ne 'print if /^sid9/ .. /^!/' "
I need the see the NAME and the text from sid9 to !
how can I use the EGERP in parallel to the PERL ?
This is one file
Qqq... (2 Replies)
Hi guys,
I have a question. In the passwd file, user johndoe has a GID of 100 which is the group named users in the group file. But if you check the group file, johndoe is not listed under GID 100, but under GID 33, which is the group named videos. Under what group does johndoe really belong,... (1 Reply)
Hi all.
Long time!!
Hope you're doing well..
I've stumbled on a peculiar siutaion here, and would expect help from this forum on a clean resolution.
We are running an rm and find command simultaneously from two different Unix sessions of the same user(let's say USER01) and on the same... (3 Replies)
Discussion started by: kumarjt
3 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)