PSET_INFO(2) System Calls PSET_INFO(2)

NAME

pset_info - get information about a processor set

SYNOPSIS

#include <sys/pset.h>

int pset_info(psetid_t pset, int *type, uint_t *numcpus,
processorid_t *cpulist);

DESCRIPTION

The pset_info() function returns information on the processor set pset.


If type is non-null, then on successful completion the type of the
processor set will be stored in the location pointed to by type. The only
type supported for active processor sets is PS_PRIVATE.


If numcpus is non-null, then on successful completion the number of
processors in the processor set will be stored in the location pointed to
by numcpus.


If numcpus and cpulist are both non-null, then cpulist points to a buffer
where a list of processors assigned to the processor set is to be stored,
and numcpus points to the maximum number of processor IDs the buffer can
hold. On successful completion, the list of processors up to the maximum
buffer size is stored in the buffer pointed to by cpulist.


If pset is PS_NONE, the list of processors not assigned to any processor
set will be stored in the buffer pointed to by cpulist, and the number of
such processors will be stored in the location pointed to by numcpus. The
location pointed to by type will be set to PS_NONE.


If pset is PS_MYID, the processor list and number of processors returned
will be those of the processor set to which the caller is bound. If the
caller is not bound to a processor set, the result will be equivalent to
setting pset to PS_NONE.

RETURN VALUES

Upon successful completion, 0 is returned. Otherwise, -1 is returned and
errno is set to indicate the error.

ERRORS

The pset_info() function will fail if:

EFAULT
The location pointed to by type, numcpus, or cpulist was not
null and not writable by the user.


EINVAL
An invalid processor set ID was specified.

The caller is in a non-global zone, the pools facility is
active, and the processor is not a member of the zone's pool's
processor set.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Stable |
+--------------------+-------------------+
|MT-Level | Async-Signal-Safe |
+--------------------+-------------------+

SEE ALSO

processor_info(2), pset_assign(2), pset_bind(2), pset_create(2),
pset_destroy(2), pset_getloadavg(3C), attributes(7), pooladm(8),
psrinfo(8), psrset(8), zoneadm(8)

NOTES

The processor set of type PS_SYSTEM is no longer supported.

June 28, 2004 PSET_INFO(2)