diff options
Diffstat (limited to 'usr/src/uts/common/os/group.c')
| -rw-r--r-- | usr/src/uts/common/os/group.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/usr/src/uts/common/os/group.c b/usr/src/uts/common/os/group.c index b15dff181f..8c1bc7e491 100644 --- a/usr/src/uts/common/os/group.c +++ b/usr/src/uts/common/os/group.c @@ -19,12 +19,10 @@ * CDDL HEADER END */ /* - * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ -#pragma ident "%Z%%M% %I% %E% SMI" - #include <sys/systm.h> #include <sys/param.h> #include <sys/debug.h> @@ -64,6 +62,21 @@ group_destroy(group_t *g) } /* + * Empty a group_t + * Capacity is preserved. + */ +void +group_empty(group_t *g) +{ + int i; + int sz = g->grp_size; + + g->grp_size = 0; + for (i = 0; i < sz; i++) + g->grp_set[i] = NULL; +} + +/* * Add element "e" to group "g" * * Returns -1 if addition would result in overcapacity, and @@ -312,7 +325,7 @@ group_add_at(group_t *g, void *e, uint_t idx) } /* - * Remove the entry at the specified index + * Remove the element at the specified index */ void group_remove_at(group_t *g, uint_t idx) @@ -320,3 +333,19 @@ group_remove_at(group_t *g, uint_t idx) ASSERT(idx < g->grp_capacity); g->grp_set[idx] = NULL; } + +/* + * Find an element in the group, and return its index + * Returns -1 if the element could not be found. + */ +uint_t +group_find(group_t *g, void *e) +{ + uint_t idx; + + for (idx = 0; idx < g->grp_capacity; idx++) { + if (g->grp_set[idx] == e) + return (idx); + } + return ((uint_t)-1); +} |