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

    NAME

    pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope
    attribute (REALTIME
    THREADS)
     
    

    SYNOPSIS

    #include <pthread.h>

    int pthread_attr_getscope(const pthread_attr_t *restrict attr,
           int *restrict
    contentionscope);
    int pthread_attr_setscope(pthread_attr_t *
    attr, int contentionscope);
     

    DESCRIPTION

    The pthread_attr_getscope() and pthread_attr_setscope() functions, respectively, shall get and set the contentionscope attribute in the attr object.

    The contentionscope attribute may have the values PTHREAD_SCOPE_SYSTEM, signifying system scheduling contention scope, or PTHREAD_SCOPE_PROCESS, signifying process scheduling contention scope. The symbols PTHREAD_SCOPE_SYSTEM and PTHREAD_SCOPE_PROCESS are defined in the <pthread.h> header.  

    RETURN VALUE

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

    ERRORS

    The pthread_attr_setscope() function may fail if:

    EINVAL
    The value of contentionscope 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_getinheritsched() , pthread_attr_getschedpolicy() , 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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