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ieee1284_ref (3)
  • >> ieee1284_ref (3) ( Linux man: Библиотечные вызовы )
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    NAME

    ieee1284_ref, ieee1284_unref - modify a port's reference count
     
    

    SYNOPSIS

    #include <ieee1284.h>

    int ieee1284_ref (struct parport *port);
    int ieee1284_unref (struct parport *port);

     

    DESCRIPTION

    If you want to free the port list from ieee1284_find_ports but open one of the ports later on, you will need to prevent it from being destroyed in ieee1284_free_ports. Each port has a reference count, and you can use ieee1284_ref to increment it and ieee1284_unref to decrement it.

    If you use ieee1284_ref at any stage, you must later call ieee1284_unref to relinquish the extra reference. If you do not do this, the resources associated with the port will not be cleaned up.

    If you have not previously used ieee1284_ref on a port, you must not use ieee1284_unref on it.

     

    RETURN VALUE

    These functions return the number of references held after the increment or decrement.

     

    SEE ALSO

    ieee1284_open(3)

     

    AUTHOR

    Tim Waugh <[email protected]>.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    SEE ALSO
    AUTHOR


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