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strqget (9)
  • >> strqget (9) ( Solaris man: Ядро )
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    NAME

    strqget - get information about a queue or band of the queue
     
    

    SYNOPSIS

    #include <sys/stream.h>
    
    
    
    int strqget(queue_t *q, qfields_t what, unsigned char pri, void *valp);
    

     

    INTERFACE LEVEL

    Architecture independent level 1 (DDI/DKI).  

    PARAMETERS

    q

    Pointer to the queue.

    what

    Field of the queue structure for (or the specified priority band) to return information about. Valid values are one of:

    QHIWAT

    High water mark.

    QLOWAT

    Low water mark.

    QMAXPSZ

    Largest packet accepted.

    QMINPSZ

    Smallest packet accepted.

    QCOUNT

    Approximate size (in bytes) of data.

    QFIRST

    First message.

    QLAST

    Last message.

    QFLAG

    Status.

    pri

    Priority band of interest.

    valp

    The address of where to store the value of the requested field.

     

    DESCRIPTION

    The strqget() function gives drivers and modules a way to get information about a queue or a particular band of a queue without directly accessing STREAMS data structures, thus insulating them from changes in the implementation of these data structures from release to release.  

    RETURN VALUES

    On success, 0 is returned and the value of the requested field is stored in the location pointed to by valp. An error number is returned on failure.  

    CONTEXT

    The strqget() function can be called from user, interrupt, or kernel context.  

    SEE ALSO

    strqset(9F), queue(9S)

    Writing Device Drivers

    STREAMS Programming Guide


     

    Index

    NAME
    SYNOPSIS
    INTERFACE LEVEL
    PARAMETERS
    DESCRIPTION
    RETURN VALUES
    CONTEXT
    SEE ALSO


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