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pthread_attr_get_np (3)
  • >> pthread_attr_get_np (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    pthread_attr_get_np
    
     - get attributes of existent thread
    
     
    

    LIBRARY

    Lb libpthread
    
     
    

    SYNOPSIS

       #include <pthread_np.h>
    int pthread_attr_get_np (pthread_t pid pthread_attr_t *dst);
     

    DESCRIPTION

    The pthread_attr_get_np ();
    function is used to get existent thread's attributes. Most fields of Vt pthread_attr_t structure are exact values of attributes provided at thread creation time (as parameter to pthread_create3 function), except for the stack address.

    Value returned as Fa dst is supposed to be used in conjunction with pthread_attr_get (*);
    functions to retrieve individual values from Vt pthread_attr_t structure. Parameter Fa dst should point to allocated memory area big enough to fit this structure.

    It is HIGHLY RECOMMENDED to use pthread_attr_init3 function to allocate attribute storage.  

    IMPLEMENTATION NOTES

    The pthread_attr_get_np ();
    function will always return a pointer to the thread's real stack address, regardless of its value in the original attributes structure.  

    RETURN VALUES

    If successful, pthread_attr_get_np ();
    function returns 0. Otherwise, an error number is returned to indicate the error.  

    EXAMPLES

    size_t
    my_thread_stack_size(pthread_t pid)
    {
        pthread_attr_t attr;
        size_t size;
    
        pthread_attr_init(&attr);
        pthread_attr_get_np(pid, &attr);
        pthread_attr_getstacksize(&attr, &size);
        pthread_attr_destroy(&attr);
        return(size);
    }
    
     

    ERRORS

    The pthread_attr_get_np ();
    function will fail if:

    Bq Er EINVAL
    Invalid value for one of given parameters.
    Bq Er ESRC
    No thread could be found corresponding to that specified by the given thread ID.

     

    SEE ALSO

    pthread_attr_destroy3, pthread_attr_getdetachstate3, pthread_attr_getinheritsched3, pthread_attr_getschedparam3, pthread_attr_getschedpolicy3, pthread_attr_getscope3, pthread_attr_getstack3, pthread_attr_getstackaddr3, pthread_attr_getstacksize3, pthread_attr_init3  

    AUTHORS

    The pthread_attr_get_np ();
    function and this manual page were written by An Alexey Zelkin Aq [email protected] .


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    IMPLEMENTATION NOTES
    RETURN VALUES
    EXAMPLES
    ERRORS
    SEE ALSO
    AUTHORS


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