Linux cli command sched_getcpu

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command sched_getcpu and provides detailed information about the command sched_getcpu, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the sched_getcpu.

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NAME 🖥️ sched_getcpu 🖥️

determine CPU on which the calling thread is running

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#include <sched.h>
int sched_getcpu(void);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

sched_getcpu():

    Since glibc 2.14:
        _GNU_SOURCE
    Before glibc 2.14:
        _BSD_SOURCE || _SVID_SOURCE
            /* _GNU_SOURCE also suffices */

DESCRIPTION

sched_getcpu() returns the number of the CPU on which the calling thread is currently executing.

RETURN VALUE

On success, sched_getcpu() returns a nonnegative CPU number. On error, -1 is returned and errno is set to indicate the error.

ERRORS

ENOSYS
This kernel does not implement getcpu(2).

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue

sched_getcpu()

Thread safetyMT-Safe

STANDARDS

GNU.

HISTORY

glibc 2.6.

NOTES

The call

cpu = sched_getcpu();

is equivalent to the following getcpu(2) call:

int c, s;
s = getcpu(&c, NULL);
cpu = (s == -1) ? s : c;

SEE ALSO

getcpu(2), sched(7)

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