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sched_getcpu
Langue: en
Version: 2009-12-08 (ubuntu - 24/10/10)
Section: 3 (Bibliothèques de fonctions)
NAME
sched_getcpu - determine CPU on which the calling thread is runningSYNOPSIS
#define _GNU_SOURCE #include <sched.h> int sched_getcpu(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sched_getcpu(): _BSD_SOURCE || _SVID_SOURCE
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).
VERSIONS
This function is available since glibc 2.6.CONFORMING TO
sched_getcpu() is glibc specific.NOTES
The callcpu = sched_getcpu();is equivalent to the following getcpu(2) call:
int c, s; s = getcpu(&c, NULL, NULL); cpu = (s == -1) ? s : c;
SEE ALSO
getcpu(2)COLOPHON
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