Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.14:
- Before glibc 2.14:
_BSD_SOURCE || _SVID_SOURCE
/* _GNU_SOURCE also suffices */
DESCRIPTIONsched_getcpu() returns the number of the CPU on which the calling thread is currently executing.
RETURN VALUEOn success, sched_getcpu() returns a nonnegative CPU number. On error, -1 is returned and errno is set to indicate the error.
- This kernel does not implement getcpu(2).
VERSIONSThis function is available since glibc 2.6.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
CONFORMING TOsched_getcpu() is glibc-specific.
cpu = sched_getcpu();is equivalent to the following getcpu(2) call:
int c, s; s = getcpu(&c, NULL, NULL); cpu = (s == -1) ? s : c;
COLOPHONThis page is part of release 4.06 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.