Using lgrp_resources()

The lgrp_resources() function returns the number of resources contained in a specified lgroup.

#include <sys/lgrp_user.h>
int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp, lgrp_id_t *lgrpids,
                   uint_t count, lgrp_rsrc_t type);

The lgrp_resources() function takes a cookie that represents a snapshot of the lgroup hierarchy. That cookie is obtained from the lgrp_init() function. The lgrp_resources() function returns the number of resources that are in the lgroup with the ID that is specified by the value of the lgrp argument. The lgrp_resources() function represents the resources with a set of lgroups that directly contain CPU or memory resources. The lgrp_rsrc_t argument can have the following two values:

LGRP_RSRC_CPU

The lgrp_resources() function returns the number of CPU resources.

LGRP_RSRC_MEM

The lgrp_resources() function returns the number of memory resources.

When the value passed in the lgrpids[] argument is not null and the count argument is not zero, the lgrp_resources() function stores lgroup IDs in the lgrpids[] array. The number of lgroup IDs stored in the array can be up to the value of the count argument.

The lgrp_resources() function returns EINVAL when the specified cookie, lgroup ID, or type are not valid. The lgrp_resources() function returns ESRCH when the function does not find the specified lgroup ID.