Like Tree1Likes
  • 1 Post By Salem

Process Control Block

This is a discussion on Process Control Block within the C Programming forums, part of the General Programming Boards category; Is there any way by which a process can acess any field of its process control block structure? Thanx in ...

  1. #1
    Registered User
    Join Date
    Apr 2011
    Posts
    33

    Process Control Block

    Is there any way by which a process can acess any field of its process control block structure?

    Thanx in advance....

  2. #2
    and the hat of wrongness Salem's Avatar
    Join Date
    Aug 2001
    Location
    The edge of the known universe
    Posts
    32,673
    How are you managing to learn anything, while you're making such huge jumps all over the tech landscape?

    One minute it's network gaming, and the next it's kernel hacking.
    multiplayer gaming
    wget implemenation
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  3. #3
    Banned
    Join Date
    Aug 2010
    Location
    Ontario Canada
    Posts
    9,547
    Quote Originally Posted by Salem View Post
    How are you managing to learn anything, while you're making such huge jumps all over the tech landscape?

    One minute it's network gaming, and the next it's kernel hacking.
    multiplayer gaming
    wget implemenation
    Because he keeps getting these big ideas and discovers he's in over his head and moves on to something else.

    What Dibyayan really needs to do is pick some simpler projects, commensurate with his skill level and work towards the bigger goals. Balance the cheque book, do a houshold inventory, write a windows program, write a media player... along a progression of increasing complexity...

    We see this all the time... people get through the basics, they learn the keywords, write the parking lot program and maybe the money changer, then decide they're ready for big time coding... Most often the result is that they frustrate themselves to the point of giving up on what could be a very rewarding career or hobby because they are constantly taking on projects they can't handle. I worked console projects for nearly 6 months before trying Windows GUI and worked that for nearly a year before letting any of it get beyond my own hard disk...

    It needs to be said that what students learn --even at university level-- is usually just enough to qualify them to start learning... it's not a complete education and anyone who thinks it is, usually ends up repeatedly banging up against their limitations.

    Even with the diploma in their hands, they still need to follow the learning process...
    Last edited by CommonTater; 05-17-2011 at 11:15 AM.

  4. #4
    Registered User
    Join Date
    Apr 2011
    Posts
    33

    project

    yeah....
    u r right..
    then please help me.tell me a project which might be in my grasp.i am currently doing graduation in computer science.
    I really want to learn these things...(i.e network programming,system programming etc..)
    please GUIDE me.
    Last edited by Dibyayan Chakra; 05-17-2011 at 07:52 PM.

  5. #5
    Registered User
    Join Date
    Nov 2004
    Location
    India
    Posts
    515
    Start off with writing a simple file transfer program or a chat server. Then take up an end to end protocol of your choice and implement it from scratch. Post that you can move over to more advanced projects that involve kernel hacking etc. You need to start small.
    Code:
    >+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.

  6. #6
    Registered User
    Join Date
    Apr 2011
    Posts
    33

    Need guidence

    sorry.i needed to mention the things that i hav done so far..

    Implementing graph theory algorithms,numerical analysis.
    Basic File handling programmes,
    Implementing sorting and searching algorithms,
    Implementing linked-list and tree operations
    a simple editer programme using Ncurses(could have done with xlib).
    A Human v/s Human chess game Interface..(leaving the network programming part)

    Using Basic Linux System calls(read,open,write,fork,wait,getpid,exec,kill)
    Implemented printf() function using the write system call
    Linux Signal Handling,
    Shared Memory creation and few process synchronisation problems with solution(producer consumer problem,bounded buffer problem)
    Message passing within two or more Cooperating process.
    A programme which searches the entire directory tree for a specific file or folder in Linux.(must be a super user )
    Using basic functionality provided by shadow.h api in linux.

    Image processing--recovery of degraded text document grayscale image and converting it to a binary image.

    so i think network programming is way above my head..so
    please GUIDE me.I would be very greatfull to all of you guys.
    thanx.
    Last edited by Dibyayan Chakra; 05-17-2011 at 08:36 PM.

  7. #7
    Registered User
    Join Date
    Nov 2004
    Location
    India
    Posts
    515
    From what I understand, you want to get started with network programming, right? How about implementing a command line chat client and a server for starters? You need to mention what you are aiming for. Simply taking up random projects on disjoint topics won't help much.
    Code:
    >+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.

  8. #8
    Registered User
    Join Date
    Apr 2011
    Posts
    33

    Guidence

    Quote Originally Posted by PING View Post
    From what I understand, you want to get started with network programming, right? How about implementing a command line chat client and a server for starters? You need to mention what you are aiming for. Simply taking up random projects on disjoint topics won't help much.
    i think its not a good time for network programming.
    because i am not confident about my knowledge on networking.there are many basic technical terms (like internet protocol family,tcp/ip etc) which i dont understand yet..
    but i think i know just enough about system programming(like things involving linux system call)
    to get started..

    so i think it would be best for me to learn the system programming first..
    what do you guys think.?????
    please let me know.
    Last edited by Dibyayan Chakra; 05-17-2011 at 09:29 PM.

  9. #9
    Registered User
    Join Date
    Nov 2004
    Location
    India
    Posts
    515
    Get a copy of Linux System Programming - O'Reilly Media from a local bookstore. It should get you started on the basics. Once you are comfortable with the introductory material covered in the book, you can take up relevant projects.
    Code:
    >+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.

  10. #10
    Banned
    Join Date
    Aug 2010
    Location
    Ontario Canada
    Posts
    9,547
    Quote Originally Posted by Dibyayan Chakra View Post
    so i think it would be best for me to learn the system programming first..
    what do you guys think.?????
    please let me know.
    No... learn APPLICATION programming first... Write a few small utilities... simple stuff that everyone will use... a mass file renamer, a system cleanup tool, duplicate file finder... then move on to something more advanced, perhaps some system usage monitors or performance monitors. From there get started in GUI mode (Windows or *nix, either way) and write some nice applications... a media player, maybe a few system utilities... file finders, that sort of thing.

    Trying to go from "Finishing your course exercises" straight into messing with kenel code or internet protocals is just going to frustrate the living daylights out of you...

    As a friend of mine points out... "You can't dig a hole from the bottom up..."

  11. #11
    and the hat of wrongness Salem's Avatar
    Join Date
    Aug 2001
    Location
    The edge of the known universe
    Posts
    32,673
    > i needed to mention the things that i hav done so far..
    But if you've already done these things, then why do you need our help for doing anything else?

    Someone who has real experience of all those things would have mastered books, google, tutorials, trying things out for themselves.

    I think you need to spend some time actually practising what you have learnt.

    Because it seems to me that all you're after is a long list of tick boxes without actually learning much at all. That would put you in the 97% bracket of the people in my sig-link. And on that note, some English practice would be helpful as well.

    > so i think it would be best for me to learn the system programming first..
    I think you need to pick a level and go with it. Personally, I would suggest an application level (there are many applications to write, but there are very few kernels). There's nothing wrong with being "aware" of what is going on in the kernel if you're an apps programmer, but it doesn't need to be a speciality.
    rags_to_riches likes this.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  12. #12
    Registered User
    Join Date
    Apr 2011
    Posts
    33
    thanks for your opinions....
    thanks tater.
    thanks salem.

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. how to get process info ( to extract process thread id )
    By umen242 in forum C++ Programming
    Replies: 4
    Last Post: 02-12-2009, 12:08 PM
  2. Eternal block of process with sem_wait ( )
    By bonnuit in forum C Programming
    Replies: 3
    Last Post: 01-06-2009, 11:27 AM
  3. Block Control Characters
    By Hexxx in forum C++ Programming
    Replies: 7
    Last Post: 02-12-2006, 03:23 PM
  4. Process sending file descriptors to another process
    By Yasir_Malik in forum C Programming
    Replies: 4
    Last Post: 04-07-2005, 07:36 PM
  5. Child Process & Parent Process Data :: Win32
    By kuphryn in forum Windows Programming
    Replies: 5
    Last Post: 09-11-2002, 12:19 PM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21