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pthread_attr_getschedpolicy (3)
  • pthread_attr_getschedpolicy (3) ( Solaris man: Библиотечные вызовы )
  • pthread_attr_getschedpolicy (3) ( FreeBSD man: Библиотечные вызовы )
  • pthread_attr_getschedpolicy (3) ( Linux man: Библиотечные вызовы )
  • >> pthread_attr_getschedpolicy (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get and
    set the schedpolicy attribute (REALTIME
    THREADS)
     
    

    SYNOPSIS

    #include <pthread.h>

    int pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr,
           int *restrict
    policy);
    int pthread_attr_setschedpolicy(pthread_attr_t *
    attr, int policy);
     

    DESCRIPTION

    The pthread_attr_getschedpolicy() and pthread_attr_setschedpolicy() functions, respectively, shall get and set the schedpolicy attribute in the attr argument.

    The supported values of policy shall include SCHED_FIFO, SCHED_RR, and SCHED_OTHER, which are defined in the <sched.h> header. When threads executing with the scheduling policy SCHED_FIFO, SCHED_RR,  or SCHED_SPORADIC are waiting on a mutex, they shall acquire the mutex in priority order when the mutex is unlocked.  

    RETURN VALUE

    If successful, the pthread_attr_getschedpolicy() and pthread_attr_setschedpolicy() functions shall return zero; otherwise, an error number shall be returned to indicate the error.  

    ERRORS

    The pthread_attr_setschedpolicy() function may fail if:

    EINVAL
    The value of policy is not valid.
    ENOTSUP
    An attempt was made to set the attribute to an unsupported value.

    These functions shall not return an error code of [EINTR].

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    After these attributes have been set, a thread can be created with the specified attributes using pthread_create(). Using these routines does not affect the current running thread.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    pthread_attr_destroy() , pthread_attr_getscope() , pthread_attr_getinheritsched() , pthread_attr_getschedparam() , pthread_create() , the Base Definitions volume of IEEE Std 1003.1-2001, <pthread.h>, <sched.h>  

    COPYRIGHT

    Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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