Sponsored Content
Full Discussion: Posix threads
Top Forums UNIX for Advanced & Expert Users Posix threads Post 302311831 by pludi on Wednesday 29th of April 2009 05:20:07 PM
Old 04-29-2009
First, please put [code ][/code] tags (sans the space) around your listing, it's easier on the eyes. And since we're on the subject, could you shorten your output?

Second: Your thread has to run 8 printf()s, which translates to about 25 system instructions, times 10 = 250 instructions. Given that even a P90 from the last century can do roughly 90000000 instructions per second, your code is done long before the kernel has any reason to preempt it.
 

9 More Discussions You Might Find Interesting

1. BSD

Posix queues

Hi! Everybody%) I got a question like this: Does my FreeBSD5.1 support Posix queues. Thanks! (7 Replies)
Discussion started by: kamazi
7 Replies

2. UNIX for Dummies Questions & Answers

how to read POSIX?

how to read POSIX? poe six or not? (3 Replies)
Discussion started by: robin.zhu
3 Replies

3. Programming

POSIX threads

Hello ! Let's supose I have a main function in C , and two POSIX threads. I give you an example down : int main() { int something; char else; void *FirstThread(); void *SecondThread(); .. <start those two pthreads ..> return 0;} void *FirstThread() { ... } void *SecondThread()... (2 Replies)
Discussion started by: !_30
2 Replies

4. UNIX for Advanced & Expert Users

Threads and Threads Count ?

Hi all, How can I get the list of all Threads and the Total count of threads under a particular process ? Do suggest !! Awaiting for the replies !! Thanks Varun:b: (2 Replies)
Discussion started by: varungupta
2 Replies

5. Programming

Posix

HI, When i am configuring php in SUN Solaris. I am getting the below error. configure: error: Your system seems to lack POSIX threads. Do i need to install POSIX? If so can somebody let me know where can i download POSIX for Solaris 8? Thanks, (2 Replies)
Discussion started by: Krrishv
2 Replies

6. Programming

POSIX threads and data safety

I created multiple POSIX threads (on readhat Linux) in a C program in my app. What I am doing is - I am creating threads equal to the number of CPUs in the system and and equal number of instances of a certain data structure, basically a queue implementation. I am assigning one ID to the thread... (2 Replies)
Discussion started by: radiatejava
2 Replies

7. Programming

need help with posix threads

Hi, I am new to posix threads. The no of threads to be created depends on the runtime. If I get the number of threads, I need to forward declare pthread_t mythread; how to do that can I use pointers and use malloc()?? I also have another question. The pthread_join is used to make... (0 Replies)
Discussion started by: brett01
0 Replies

8. UNIX for Advanced & Expert Users

Linkage of POSIX threads function calls

I wonder if someone knows what is the rationale behind linking function calls of the POSIX threads library at link-time vs. run-time. For example, if I create the following program: #include <pthread.h> void noop() { return; } int main() { pthread_self(); pthread_atfork(noop,... (1 Reply)
Discussion started by: jsimsa
1 Replies

9. UNIX for Advanced & Expert Users

Change value for POSIX

Hi, I have a VM with following configration . 3.10.0-693.1.1.el7.x86_64 #1 SMP Thu Aug 3 08:15:31 EDT 2017 x86_64 x86_64 x86_64 GNU/Linux My current POSIX is :-- Your environment variables take up 2011 bytes POSIX upper limit on argument length (this system): 2093093 POSIX smallest... (15 Replies)
Discussion started by: Abhayman
15 Replies
Graphics::Primitive::Component(3pm)			User Contributed Perl Documentation		       Graphics::Primitive::Component(3pm)

NAME
Graphics::Primitive::Component - Base graphical unit DESCRIPTION
A Component is an entity with a graphical representation. SYNOPSIS
my $c = Graphics::Primitive::Component->new({ origin => Geometry::Primitive::Point->new({ x => $x, y => $y }), width => 500, height => 350 }); LIFECYCLE
prepare Most components do the majority of their setup in the prepare. The goal of prepare is to establish it's minimum height and width so that it can be properly positioned by a layout manager. $driver->prepare($comp); layout This is not a method of Component, but a phase introduced by the use of Layout::Manager. If the component is a container then each of it's child components (even the containers) will be positioned according to the minimum height and width determined during prepare. Different layout manager implementations have different rules, so consult the documentation for each for details. After this phase has completed the origin, height and width should be set for all components. $lm->do_layout($comp); finalize This final phase provides and opportunity for the component to do any final changes to it's internals before being passed to a driver for drawing. An example might be a component that draws a fleuron at it's extremities. Since the final height and width isn't known until this phase, it was impossible for it to position these internal components until now. It may even defer creation of this components until now. It is not ok to defer all action to the finalize phase. If you do not establish a minimum hieght and width during prepare then the layout manager may not provide you with enough space to draw. $driver->finalize($comp); draw Handled by Graphics::Primitive::Driver. $driver->draw($comp); METHODS
Constructor new Creates a new Component. Instance Methods background_color Set this component's background color. border Set this component's border, which should be an instance of Border. callback Optional callback that is fired at the beginning of the "finalize" phase. This allows you to add some sort of custom code that can modify the component just before it is rendered. The only argument is the component itself. Note that changing the position or the dimensions of the component will not re-layout the scene. You may have weird results of you manipulate the component's dimensions here. class Set/Get this component's class, which is an abitrary string. Graphics::Primitive has no internal use for this attribute but provides it for outside use. color Set this component's foreground color. fire_callback Method to execute this component's "callback". get_tree Get a tree for this component. Since components are -- by definiton -- leaf nodes, this tree will only have the one member at it's root. has_callback Predicate that tells if this component has a "callback". height Set this component's height. inside_bounding_box Returns a Rectangle that defines the edges of the 'inside' box for this component. This box is relative to the origin of the component. inside_height Get the height available in this container after taking away space for padding, margin and borders. inside_width Get the width available in this container after taking away space for padding, margin and borders. margins Set this component's margins, which should be an instance of Insets. Margins are the space outside the component's bounding box, as in CSS. The margins should be outside the border. maximum_height Set/Get this component's maximum height. Used to inform a layout manager. maximum_width Set/Get this component's maximum width. Used to inform a layout manager. minimum_height Set/Get this component's minimum height. Used to inform a layout manager. minimum_inside_height Get the minimum height available in this container after taking away space for padding, margin and borders. minimum_inside_width Get the minimum width available in this container after taking away space for padding, margin and borders. minimum_width Set/Get this component's minimum width. Used to inform a layout manager. name Set this component's name. This is not required, but may inform consumers of a component. Pay attention to that library's documentation. origin Set/Get the origin point for this component. outside_height Get the height consumed by padding, margin and borders. outside_width Get the width consumed by padding, margin and borders. finalize Method provided to give component one last opportunity to put it's contents into the provided space. Called after prepare. padding Set this component's padding, which should be an instance of Insets. Padding is the space inside the component's bounding box, as in CSS. This padding should be between the border and the component's content. page If true then this component represents stand-alone page. This informs the driver that this component (and any children) are to be renderered on a single surface. This only really makes sense in formats that have pages such as PDF of PostScript. prepare Method to prepare this component for drawing. This is an empty sub and is meant to be overridden by a specific implementation. preferred_height Set/Get this component's preferred height. Used to inform a layout manager. preferred_width Set/Get this component's preferred width. Used to inform a layout manager. to_string Get a string representation of this component in the form of: $name $x,$y ($widthx$height) visible Set/Get this component's visible flag. width Set/Get this component's width. AUTHOR
Cory Watson, "<gphat@cpan.org>" BUGS
Please report any bugs or feature requests to "bug-geometry-primitive at rt.cpan.org", or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Geometry-Primitive <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Geometry-Primitive>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes. COPYRIGHT &; LICENSE Copyright 2008-2009 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 2011-06-02 Graphics::Primitive::Component(3pm)
All times are GMT -4. The time now is 05:10 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy