sched_yield(2) — Справочная страница Linux

sched_yield(2)             System Calls Manual            sched_yield(2)

НАЗВАНИЕ

       sched_yield - yield the processor

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <sched.h>

       int sched_yield(void);

ОПИСАНИЕ

       sched_yield() causes the calling thread to relinquish the CPU.
       The thread is moved to the end of the queue for its static
       priority and a new thread gets to run.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       On success, sched_yield() returns 0.  On error, -1 is returned,
       and errno is set to indicate the error.

ОШИБКИ

       In the Linux implementation, sched_yield() always succeeds.

СТАНДАРТЫ

       POSIX.1-2008.

ИСТОРИЯ

       POSIX.1-2001 (but optional).  POSIX.1-2008.

       Before POSIX.1-2008, systems on which sched_yield() is available
       defined _POSIX_PRIORITY_SCHEDULING in <unistd.h>.

ЗАМЕЧАНИЯ

       sched_yield() is intended for use with real-time scheduling
       policies (i.e., SCHED_FIFO or SCHED_RR).  Use of sched_yield()
       with nondeterministic scheduling policies such as SCHED_OTHER is
       unspecified and very likely means your application design is
       broken.

       If the calling thread is the only thread in the highest priority
       list at that time, it will continue to run after a call to
       sched_yield().

       Avoid calling sched_yield() unnecessarily or inappropriately
       (e.g., when resources needed by other schedulable threads are
       still held by the caller), since doing so will result in
       unnecessary context switches, which will degrade system
       performance.

СМОТРИТЕ ТАКЖЕ

       sched(7)

КОЛОФОН

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
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       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                 sched_yield(2)

Страницы, ссылающиеся на эту страницу: getrlimit(2), sched_setattr(2), sched_setscheduler(2), syscalls(2), pthread_yield(3), sched(7)