pthread_rad_attach(3)					     Library Functions Manual					     pthread_rad_attach(3)

NAME

       pthread_rad_attach, pthread_rad_bind - Attaches or binds a thread to a NUMA Resource Affinity Domain (libpthread library)

SYNOPSIS

       #include <numa.h>

       int pthread_rad_attach(
	       pthread_t thread,
	       radset_t radset,
	       ulong_t flags ); int pthread_rad_bind(
	       pthread_t thread,
	       radset_t radset,
	       ulong_t flags );

PARAMETERS

       Identifies  the	thread	to be attached or bound to the specified set of Resource Affinity Domains (RADs).  Identifies the RAD set to which
       the thread is to be attached or bound.

DESCRIPTION

       The pthread_rad_attach() function attaches the thread specified by the thread argument to the RAD set specified by the radset argument.

       The pthread_rad_bind() function binds the specified thread to the specified RAD set.

       While both functions assign a home RAD for the thread, an attach operation allows remote execution on other RADs  while	a  bind  operation
       restricts execution to the home RAD. In the following paragraphs, the term "assign" is used when the description refers equally to both the
       attach and the bind operations.

       The memory allocation policy for the process will be set to MPOL_THREAD. The home RAD for the process will be selected by the system sched-
       uler  from  among  the RADs included in radset based on current system load balance and the flags argument. The overflow set (mattr_radset)
       for the process will be set to radset.

       The following symbolic values are defined for the flags argument: The requested assignments are mandatory. If this option is not  set,  the
       system  will consider the request to be a "hint" and may take no action for any or all of specified processes.  The thread has small memory
       requirements, so the system should (for the home RAD) favor those RADs with light CPU loads, independent of their  available  memory.   The
       thread  has  large memory requirements, so the system should (for the home RAD) favor those RADs with more available memory, independent of
       their CPU loads.

       If the caller does not have partition administration privilege and if the radset argument contains RADs that are not in the caller's parti-
       tion, an error will be returned.

NOTES

       The  value  for	the radset argument could be obtained from an nloc() call to assign or migrate the process to a RAD close (or closer) to a
       particular resource. When obtained in this manner, the radset value will identify RADs that were in the caller's partition at the  time	of
       the nloc() call. The partition configuration could change between the call to nloc() and a subsequent call to pthread_rad_attach(), result-
       ing in an error. An application should be prepared to handle this error, even though it should not be a frequent occurrence.

RETURN VALUES

       Success.  Failure. In this case, the integer value indicates the type of error. Possible errors are as follows: The thread is hard attached
       (RAD_INSIST) to RADs or has memory wired (locked) on its current RAD such that it cannot be migrated to the specified RAD set.  One of more
       of the RADs in the radset argument or options in the flags argument are invalid.  RAD_INSIST and RAD_MIGRATE were specified, and the thread
       cannot be migrated because insufficient memory exists on RADs in the specified RAD set.	The caller does not have appropriate privileges to
       assign processes to RADs in the specified RAD set.  The thread specified by thread does not exist.

ERRORS

       None.

SEE ALSO

       Functions: nloc(3), pthread_rad_detach(3)

															     pthread_rad_attach(3)