Which is more expensive ? Post: 302131754

Sponsored Content

Top Forums Programming Which is more expensive ? Post 302131754 by porter on Monday 13th of August 2007 02:21:18 PM

08-13-2007

Registered User

Quote:

Originally Posted by vino

I was told that you generally need to close only 64 fds instead of the RLIMIT.rlim_cur after forking. Any thoughts ?

You need to close the file descriptors you need to close. Smilie

The number 64 comes from some editions of UNIX's hard coded limit.

There are alternatives...

1. If the reason is the program is going to call 'exec' then the code that opens the file descriptors could set the close-on-exec bit.

2. Modular threaded code could use pthead_atfork to set up a call back to close a file descriptor if required.

porter

View Public Profile for porter

Find all posts by porter

2 More Discussions You Might Find Interesting

1. Programming

calling pthread_self (on ubuntu), expensive?

Hi all, Is anyone aware of what operations are involved when a call to pthread_self() is made, obtaining the unique thread ID on a Ubuntu system (or even any Linux flavour)? Specifically, to retrieve the thread id, is there any locking required or atomic operations? I'm building an...

2. What is on Your Mind?

Very Expensive Running Shoes

You really should not need one third of the entire US budget to buy a pair of running shoes... even if they are name brand. What have these guys been smoking? It reminds me of the old joke... Customer: At those prices you aren't going to sell many shoes. Salesman: Ah, but all we need to do is...

LEARN ABOUT DEBIAN

graphics::primitive::insets

Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME

       Graphics::Primitive::Insets - Space between things

DESCRIPTION

       Graphics::Primitive::Insets represents the amount of space that surrounds something.  This object can be used to represent either padding
       or margins (in the CSS sense, one being inside the bounding box, the other being outside)

SYNOPSIS

	 use Graphics::Primitive::Insets;

	 my $insets = Graphics::Primitive::Insets->new({
	   top	   => 5,
	   bottom  => 5,
	   left    => 5,
	   right   => 5
	 });

METHODS

   Constructor
       new Creates a new Graphics::Primitive::Insets.

   Instance Methods
       as_array
	   Return these insets as an array in the form of top, right, bottom and left.

       bottom
	   Set/Get the inset from the bottom.

       equal_to
	   Determine if these Insets are equal to another.

       left
	   Set/Get the inset from the left.

       right
	   Set/Get the inset from the right.

       top Set/Get the inset from the top.

       zero
	   Sets all the insets (top, left, bottom, right) to 0.

AUTHOR

       Cory Watson, "<gphat@cpan.org>"

SEE ALSO

       perl(1)

COPYRIGHT &; LICENSE
       Copyright 2008-2010 by Cory G Watson.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.12.3							    2010-08-21					  Graphics::Primitive::Insets(3pm)