|POSIX_SPAWNATTR_GETSCHEDPOLICY(3P)||POSIX Programmer's Manual||POSIX_SPAWNATTR_GETSCHEDPOLICY(3P)|
PROLOGThis 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.
NAMEposix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy - get and set the spawn-schedpolicy attribute of a spawn attributes object ( ADVANCED REALTIME)
DESCRIPTIONThe 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 VALUEUpon 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.
ERRORSThese functions may fail if:
The value specified by
attr is invalid.
The posix_spawnattr_setschedpolicy() function may fail if:
The value of the attribute being set is not valid.
The following sections are informative.
APPLICATION USAGEThese functions are part of the Spawn and Process Scheduling options and need not be provided on all implementations.
SEE ALSOposix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_init(), posix_spawnattr_getsigdefault(), posix_spawnattr_getflags(), posix_spawnattr_getpgroup(), posix_spawnattr_getschedparam(), posix_spawnattr_getsigmask(), posix_spawnattr_setsigdefault(), posix_spawnattr_setflags(), posix_spawnattr_setpgroup(), posix_spawnattr_setschedparam(), posix_spawnattr_setsigmask(), posix_spawnp(), the Base Definitions volume of IEEE Std 1003.1-2001, <sched.h>, <spawn.h>
COPYRIGHTPortions 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 .
|2003||IEEE/The Open Group|