posix_spawnattr_getschedpolicy, posix_spawnattr_setschedpolicy — get and set the spawn-schedpolicy attribute of a spawn attributes object (ADVANCED REALTIME)
SPN PS #include <spawn.h> #include <sched.h> int posix_spawnattr_getschedpolicy (const posix_spawnattr_t * restrictattr
, int *restrictschedpolicy
) ; int posix_spawnattr_setschedpolicy (posix_spawnattr_t *attr,
intschedpolicy
) ;
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_SETCHEDULER is set in the spawnflags attribute). The default value of this attribute is unspecified.
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.
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. |
These functions are part of the Spawn and Process Scheduling options and need not be provided on all implementations.
posix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_int(), 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>
3.138.105.255