получить политику планирования (РЕАЛЬНОЕ ВРЕМЯ) (get scheduling policy (REALTIME))
Пролог (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.
Имя (Name)
sched_getscheduler — get scheduling policy (REALTIME)
Синопсис (Synopsis)
#include <sched.h>
int sched_getscheduler(pid_t pid);
Описание (Description)
The sched_getscheduler() function shall return the scheduling
policy of the process specified by pid. If the value of pid is
negative, the behavior of the sched_getscheduler() function is
unspecified.
The values that can be returned by sched_getscheduler() are
defined in the <sched.h> header.
If a process specified by pid exists, and if the calling process
has permission, the scheduling policy shall be returned for the
process whose process ID is equal to pid.
If pid is zero, the scheduling policy shall be returned for the
calling process.
Возвращаемое значение (Return value)
Upon successful completion, the sched_getscheduler() function
shall return the scheduling policy of the specified process. If
unsuccessful, the function shall return -1 and set errno to
indicate the error.
Ошибки (Error)
The sched_getscheduler() function shall fail if:
EPERM The requesting process does not have permission to
determine the scheduling policy of the specified process.
ESRCH No process can be found corresponding to that specified by
pid.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
sched_getparam(3p), sched_setparam(3p), sched_setscheduler(3p)
The Base Definitions volume of POSIX.1‐2017, sched.h(0p)
