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POSIX_SPAWNATTR_GETSCHEDPOLICY

Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index Return to Main Contents
 

PROLOG

This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

 

NAME

posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy --- get and set the spawn-schedpolicy attribute of a spawn attributes object (ADVANCED REALTIME)  

SYNOPSIS

#include <spawn.h>
#include <sched.h>
int posix_spawnattr_getschedpolicy(const posix_spawnattr_t
    *restrict attr, int *restrict schedpolicy);
int posix_spawnattr_setschedpolicy(posix_spawnattr_t *attr,
    int schedpolicy);
 

DESCRIPTION

The posix_spawnattr_getschedpolicy() function shall obtain the value of the spawn-schedpolicy attribute from the attributes object referenced by attr. The posix_spawnattr_setschedpolicy() function shall set the spawn-schedpolicy attribute in an initialized attributes object referenced by attr. The spawn-schedpolicy attribute represents the scheduling policy to be assigned to the new process image in a spawn operation (if POSIX_SPAWN_SETSCHEDULER is set in the spawn-flags attribute). The default value of this attribute is unspecified.  

RETURN VALUE

Upon successful completion, posix_spawnattr_getschedpolicy() shall return zero and store the value of the spawn-schedpolicy attribute of attr into the object referenced by the schedpolicy parameter; otherwise, an error number shall be returned to indicate the error. Upon successful completion, posix_spawnattr_setschedpolicy() shall return zero; otherwise, an error number shall be returned to indicate the error.  

ERRORS

These functions may fail if:
EINVAL
The value specified by attr is invalid. The posix_spawnattr_setschedpolicy() function may fail if:
EINVAL
The value of the attribute being set is not valid.

The following sections are informative.  

EXAMPLES

None.  

APPLICATION USAGE

These functions are part of the Spawn and Process Scheduling options and need not be provided on all implementations.  

RATIONALE

None.  

FUTURE DIRECTIONS

None.  

SEE ALSO

posix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_getsigdefault(), posix_spawnattr_getflags(), posix_spawnattr_getpgroup(), posix_spawnattr_getschedparam(), posix_spawnattr_getsigmask() The Base Definitions volume of POSIX.1-2008, <sched.h>, <spawn.h>  

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .


 

Index

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


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