Get the scheduling parameters attribute of a spawn attributes object
#include <spawn.h>
int posix_spawnattr_getschedparam(
const posix_spawnattr_t *_Restrict attrp,
struct sched_param *_Restrict sched_p);
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The posix_spawnattr_getschedparam() function obtains the value of the scheduling parameters attribute from the attributes object pointed to by attrp, and stores the value in the location pointed to by sched_p. You must have already initialized the spawn attributes object by calling posix_spawnattr_init().
The scheduling parameters attribute governs the parameter assigned to a new process image in a spawn operation if POSIX_SPAWN_SETSCHEDULER or POSIX_SPAWN_SETSCHEDPARAM is set in the spawn flags attribute; to set this flag, call the POSIX function posix_spawnattr_setflags(), or the QNX Neutrino function posix_spawnattr_setxflags(). The default value of the process group attribute is zero. By default, the child process uses the same scheduling parameters as the parent.
You can specify the value of this attribute by calling posix_spawnattr_setschedparam().
For more information about spawn attributes, see the entry for posix_spawn().
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | Yes |
| Signal handler | Yes |
| Thread | Yes |