#include <spawn.h> #include <sched.h>
int posix_spawnattr_getschedparam(const posix_spawnattr_t *restrict attr, struct sched_param *restrict schedparam);
int posix_spawnattr_setschedparam(posix_spawnattr_t *restrict attr, const struct sched_param *restrict schedparam);
The posix_spawnattr_getschedparam() function obtains the value of the spawn-schedparam attribute from the attributes object referenced by attr.
The posix_spawnattr_setschedparam() function sets the spawn-schedparam attribute in an initialized attributes object referenced by attr.
The spawn-schedparam attribute represents the scheduling parameters to be assigned to the new process image in a spawn operation (if POSIX_SPAWN_SETSCHEDULER or POSIX_SPAWN_SETSCHEDPARAM is set in the spawn-flags attribute). The default value of this attribute is unspecified.
Upon successful completion, posix_spawnattr_getschedparam() returns 0 and stores the value of the spawn-schedparam attribute of attr into the object referenced by the schedparam parameter. Otherwise, an error number is returned to indicate the error.
Upon successful completion, posix_spawnattr_setschedparam() returns 0. Otherwise, an error number is returned to indicate the error.
These functions may fail if:
EINVAL The value specified by attr is invalid.
The posix_spawnattr_setschedparam() function may fail if:
EINVAL The value of the attribute being set is not valid.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Standard |
| MT-Level | MT-Safe |
posix_spawn(3C), posix_spawnattr_destroy(3C), posix_spawnattr_getflags(3C), posix_spawnattr_getpgroup(3C), posix_spawnattr_getschedpolicy(3C), posix_spawnattr_getsigdefault(3C), posix_spawnattr_getsigmask(3C), attributes(5), standards(5)