LGRP_NLGRPS(3LGRP) Locality Group Library Functions LGRP_NLGRPS(3LGRP)
lgrp_nlgrps - get number of lgroups
cc [ flag ... ] file... -llgrp [ library ... ]
#include <sys/lgrp_user.h>
int lgrp_nlgrps(lgrp_cookie_t cookie);
The lgrp_nlgrps() function takes a cookie representing a snapshot of
the lgroup hierarchy obtained from lgrp_init(3LGRP). It returns the
number of lgroups in the hierarchy where the number is always at
least one.
Upon successful completion, lgrp_nlgrps() returns the number of
lgroups in the system. Otherwise, it returns -1 and sets errno to
indicate the error.
The lgrp_nlgrps() function will fail if:
EINVAL
The cookie is not valid.
See attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Evolving |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
lgrp_children(3LGRP), lgrp_init(3LGRP), lgrp_parents(3LGRP),
liblgrp(3LIB), attributes(7)
April 16, 2003 LGRP_NLGRPS(3LGRP)
NAME
lgrp_nlgrps - get number of lgroups
SYNOPSIS
cc [ flag ... ] file... -llgrp [ library ... ]
#include <sys/lgrp_user.h>
int lgrp_nlgrps(lgrp_cookie_t cookie);
DESCRIPTION
The lgrp_nlgrps() function takes a cookie representing a snapshot of
the lgroup hierarchy obtained from lgrp_init(3LGRP). It returns the
number of lgroups in the hierarchy where the number is always at
least one.
RETURN VALUES
Upon successful completion, lgrp_nlgrps() returns the number of
lgroups in the system. Otherwise, it returns -1 and sets errno to
indicate the error.
ERRORS
The lgrp_nlgrps() function will fail if:
EINVAL
The cookie is not valid.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Evolving |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
lgrp_children(3LGRP), lgrp_init(3LGRP), lgrp_parents(3LGRP),
liblgrp(3LIB), attributes(7)
April 16, 2003 LGRP_NLGRPS(3LGRP)