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rad_foreach(3)							rad_foreach(3)

       rad_foreach  -  Enumerates  the	members	 of a Resource Affinity Domain
       (libnuma library)

       #include <numa.h> rad_cursor_t cursor = SET_CURSOR_INIT;

       int rad_foreach(
	       radset_t radset,
	       unsigned int flags,
	       radset_cursor_t *cursor );

       Specifies a set of Resource Affinity Domains (RADs) whose  members  are
       to  be  enumerated.   Specifies one or more flags that control the pro‐
       cessing of RAD members in the set. The following	 symbolic  values  are
       defined for flags: Initialize the cursor to the first member of the set
       before	   scanning.  Wrap around to the beginning of the RAD set when
       scanning	 for members.  Consume the set members; in other words, remove
       members from the set as they are found.	Specifies an opaque type  that
       records	the  position  in  a  set  for	subsequent  invocations of the
       rad_foreach() function.

       The rad_foreach() function scans the specified RAD set, starting at the
       position	 saved in cursor, for members of the set and returns the first
       member found.  If the SET_CURSOR_FIRST flag is set, the cursor is  ini‐
       tialized	 to  the beginning of the set before starting the scan.	 If no
       members are found, the rad_foreach() function will return RAD_NONE.

       If the SET_CURSOR_WRAP flag is set, the scan will wrap from the end  of
       the  set to the beginning searching for a member to return.  Otherwise,
       a one-pass scan is performed, and when the end of the set  is  reached,
       cursor()is  left	 positioned  at the end of the set.  From then on, the
       rad_foreach() function will continue to return RAD_NONE until cursor is
       reinitialized,  either  by  specifying  the SET_CURSOR_FIRST flag or by
       specifying the SET_CURSOR_WRAP flag.

       If the SET_CURSOR_CONSUME flag is set, the  member  returned,  if  any,
       will be removed from the set.

       The  cursor  variable  may be initialized to the value SET_CURSOR_INIT.
       This is equivalent to setting SET_CURSOR_FIRST on the initial  call  to

       Although	 DESCRIPTION  discusses	 the “beginning” and “end” of the set,
       and wrapping from the end to the beginning, RAD sets  are  conceptually
       unordered.  Thus, these end points are arbitrary points in the set that
       exist to ensure that each member is returned only once per pass through
       the  set.   Applications should not depend on a numeric ordering of the
       returned member IDs.

       This function returns either the next member in the RAD	set,  starting
       at  the	position  in cursor, or RAD_NONE (if there is no next member).
       Execution of this function is always successful.


       See EXAMPLES in	radsetops(3)  for  a  sample  program  that  uses  the
       rad_foreach() function.

       Functions: numa_intro(3), radsetops(3)

       Files: numa_types(4)


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