IPC shared memory and threads

This is a discussion on IPC shared memory and threads within the Linux Programming forums, part of the Platform Specific Boards category; i want to create program with a size 10 and then create and array and put the values entered thru ...

  1. #1
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    Exclamation IPC shared memory and threads

    i want to create program with a size 10 and then create and array and put the values entered thru keyboard and store it.here it asks the user to enter the size of the array and then enter integer numbers.

    consumer we have to get the array and print it in the consumer


    can somebody PLZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP MEE





    #include<sys/types.h>
    #include<sys/ipc.h>
    #include<sys/shm.h>
    #include<stdio.h>

    #define SHMSZ 10

    main()
    {
    int a;
    int shmid;
    int *shm;
    key_t key;
    int u;
    int i;
    printf("enter array size\n");
    scanf("%d",&u);


    int* arrray=(int*) malloc(sizeof(int) * user);

    key = 1234;

    if((shmid = shmget(key,SHMSZ, IPC_CREAT | 0666)) < 0)
    {
    perror("shmget");
    exit(1);
    }

    if((shm = shmat (shmid, NULL, 0)) == (int *) -1)
    perror("shmat");
    exit(1);
    }




    a =shm;

    for(i = 0; i<user;i++)
    { scanf("%d",&a);
    array[i]=a;
    }

    *ar = NULL;

    while(*shm != '*')
    sleep(1);

    exit(0);

    }

  2. #2
    and the hat of wrongness Salem's Avatar
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    There seems to be a plethora of idiots unable to either comprehend forum posting rules OR figure out what to do with a "use code tags" popup when they post code without code tags.
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  3. #3
    Registered User Kudose's Avatar
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    I had to bite my tongue when I saw a post from someone in a developing country asking for the complete code from people they are taking jobs from.
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  4. #4
    spurious conceit MK27's Avatar
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    Quote Originally Posted by Kudose View Post
    I had to bite my tongue when I saw a post from someone in a developing country asking for the complete code from people they are taking jobs from.
    Unless you want to move away from a capitalist economic system, that is the situation you are stuck with. If I am willing to do your job for less money you are obsolete.

    In that case, making a distinction based on where someone is located is (still) foolish -- you should not offer help or advise to anyone at all, because anyone could just as easily do the same thing. You will be worth more money if you can keep everything secret from everyone.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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