pset_info - get information about a processor set
int pset_info(psetid_t pset, int *type, uint_t *numcpus,
The pset_info() function returns information on the proces-
sor 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. Processor set types can have the following
The processor set was created by the system. Processor
sets of this type cannot be modified or removed by the
user, but LWPs and processes can be bound to them
The processor set was created by pset_create(2) and
can be modified by pset_assign(2) and removed by
pset_destroy(2). LWPs and processes can also be bound
to this processor set using pset_bind().
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 suc-
cessful 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 proces-
sors returned will be those of the processor set to which
the caller is bound. If the caller is not bound to a proces-
sor set, the result will be equivalent to setting pset to
Upon successful completion, 0 is returned. Otherwise, -1 is
returned and errno is set to indicate the error.
The pset_info() function will fail if:
The location pointed to by type, numcpus, or cpulist
was not null and not writable by the user.
An invalid processor set ID was specified.
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Stable |
| MT-Level | Async-Signal-Safe |
psrinfo(1M), psrset(1M), processor_info(2), pset_assign(2),
pset_bind(2), pset_create(2), pset_destroy(2),
Man(1) output converted with