SCHED_YIELD(3POSIX)

📦 version 2017a, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu resolute, ubuntu stonking

💖 SCHED_YIELD 💖

okay bestie, so we're in the POSIX Programmer's Manual — that's the whole POSIX Programmer's Manual vibe, and this page is SCHED_YIELD(3POSIX), section 3, POSIX-flavored. Pull up a chair 🎀

✨ PROLOG ✨

so like, real talk first: this manual page is part of the POSIX Programmer's Manual. but heads up — the Linux implementation of this interface may differ (so go consult the corresponding Linux manual page for the deets on Linux behavior), or honestly, the interface may not even be implemented on Linux at all. 🙈 just so you know.

🌸 NAME 🌸

sched_yield — yield the processor. that's it, that's the whole thing. she gives up the CPU. iconic behavior honestly 💅

🦋 SYNOPSIS 🦋

#include <sched.h>

int sched_yield(void);

💜 DESCRIPTION 💜

so the sched_yield() function shall force the running thread to relinquish the processor until it again becomes the head of its thread list. and it takes no arguments. like, none. zero. she just does the thing. 👑

⭐ RETURN VALUE ⭐

sched_yield() shall return 0 if it completes successfully 🥳 — otherwise, it shall return a value of -1 and set errno to indicate the error. classic.

🔥 ERRORS 🔥

No errors are defined. no cap.

also just a lil note: the following sections are informative.

🍓 EXAMPLES 🍓

None. yeah, nothing here bestie, moving on 🫶

🌈 APPLICATION USAGE 🌈

okay so this one's a little theory-coded but stay with me.

The conceptual model for scheduling semantics in POSIX.1‐2008 defines a set of thread lists. This set of thread lists is always present, regardless of the scheduling options supported by the system. periodt.

On a system where the Process Scheduling option is not supported, portable applications should not make any assumptions regarding whether threads from other processes will be on the same thread list. so like... don't assume, girlie 💀

🧚 RATIONALE 🧚

None.

💀 FUTURE DIRECTIONS 💀

None.

👑 SEE ALSO 👑

  • The Base Definitions volume of POSIX.1‐2017, <sched.h>

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

and that's the whole page, bestie!! 💖 this one came from IEEE/The Open Group, dated 2017 — so when you see the footer SCHED_YIELD(3POSIX) down at the bottom, that's just her signature, mwah 💅✨ bye ily, go yield that processor 🦋🌸

📦 where this page comes from