PROCESSOR_BIND(2)PROCESSOR_BIND(2)NAMEprocessor_bind - bind LWPs to a processor
SYNOPSIS
#include <sys/types.h>
#include <sys/processor.h>
#include <sys/procset.h>
int processor_bind(idtype_t idtype, id_t id, processorid_t processorid,
processorid_t *obind);
DESCRIPTION
The processor_bind() function binds the LWP (lightweight process) or
set of LWPs specified by idtype and id to the processor specified by
processorid. If obind is not NULL, this function also sets the proces‐
sorid_t variable pointed to by obind to the previous binding of one of
the specified LWPs, or to PBIND_NONE if the selected LWP was not bound.
If idtype is P_PID, the binding affects all LWPs of the process with
process ID (PID) id.
If idtype is P_LWPID, the binding affects the LWP of the current
process with LWP ID id.
If idtype is P_TASKID, the binding affects all LWPs of all processes
with task ID id.
If idtype is P_PROJID, the binding affects all LWPs of all processes
with project ID id.
If idtype is P_CTID, the binding affects all LWPs of all processes with
process contract ID id.
If idtype is P_ZONEID, the binding affects all LWPs of all processes
with zone ID id.
If id is P_MYID, the specified LWP, process, task, or project is the
current one.
If processorid is PBIND_NONE, the processor bindings of the specified
LWPs are cleared.
If processorid is PBIND_QUERY, the processor bindings are not changed.
The {PRIV_PROC_OWNER} privilege must be asserted in the effective set
of the calling process or the real or effective user ID of the calling
process must match the real or effective user ID of the LWPs being
bound. If the calling process does not have permission to change all
of the specified LWPs, the bindings of the LWPs for which it does have
permission will be changed even though an error is returned.
Processor bindings are inherited across fork(2) and exec(2).
RETURN VALUES
Upon successful completion, 0 is returned. Otherwise, −1 is returned
and errno is set to indicate the error.
ERRORS
The processor_bind() function will fail if:
EFAULT
The location pointed to by obind was not NULL and not
writable by the user.
EINVAL
The specified processor is not on-line, or the idtype argu‐
ment was not P_PID, P_LWPID, P_PROJID, P_TASKID, P_CTID, or
P_ZONEID.
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.
ENOTSUP
Binding a system process to a processor set is not sup‐
ported.
EPERM
The {PRIV_PROC_OWNER} privilege is not asserted in the
effective set of the calling process and its real or effec‐
tive user ID does not match the real or effective user ID of
one of the LWPs being bound.
ESRCH
No processes, LWPs, or tasks were found to match the crite‐
ria specified by idtype and id.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬───────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼───────────────────┤
│Interface Stability │ Committed │
├────────────────────┼───────────────────┤
│MT-Level │ Async-Signal-Safe │
└────────────────────┴───────────────────┘
SEE ALSOpooladm(1M), psradm(1M), psrinfo(1M), zoneadm(1M), exec(2), fork(2),
p_online(2), pset_bind(2), sysconf(3C), process(4), project(4),
attributes(5), privileges(5)
Mar 13, 2009 PROCESSOR_BIND(2)
