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   sched_getcpu    ( 3 )

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Имя (Name)

sched_getcpu - determine CPU on which the calling thread is
       running

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Синопсис (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 */

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Описание (Description)

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

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Возвращаемое значение (Return value)

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

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Ошибки (Error)

ENOSYS This kernel does not implement getcpu(2).

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Версии (Versions)

This function is available since glibc 2.6.

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Атрибуты (Attributes)

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

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │sched_getcpu()                        │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

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Стандарты (Conforming to)

sched_getcpu() is glibc-specific.

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Примечание (Note)

The call

           cpu = sched_getcpu();

       is equivalent to the following getcpu(2) call:

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

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Смотри также (See also)

getcpu(2), sched(7)

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