NAME    [Toc]    [Back]

       cpu_get_current - Return the caller's current CPU ID (libc
       library)

SYNOPSIS    [Toc]    [Back]

       #include <cpuset.h>

       cpuid_t cpu_get_current(
               void );

PARAMETERS    [Toc]    [Back]

       The cpu_get_current() function has no parameters.

DESCRIPTION    [Toc]    [Back]

       The cpu_get_current() function fetches the ID of  the  CPU
       on which the caller is executing.

NOTES    [Toc]    [Back]

       This function is similar to the following call:

       getsysinfo(GSI_CPU_CURRENT, &cpuid, ...);

       However,  cpu_get_current()  returns  the  CPU  identifier
       directly (as type cpuid_t), whereas the getsysinfo()  call
       stores  the  identifier into a buffer (as type long) whose
       address is passed to the function.

RESTRICTIONS    [Toc]    [Back]

       As is true for many system information queries,  the  data
       returned  by cpu_get_current() may be stale by the time it
       is returned to or used by the caller. In  other  words,  a
       context  switch  to  a  different  CPU can occur after the
       "current CPU" has been fetched by the application.

RETURN VALUES    [Toc]    [Back]

       The cpu_get_current() function returns the CPU ID  of  the
       processor  where  the  caller  is executing. This function
       always completes successfully.

ERRORS    [Toc]    [Back]

       None.

SEE ALSO    [Toc]    [Back]

       Functions: getsysinfo(2), numa_intro(3)

       Files: numa_types(4)



                                               cpu_get_current(3)