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6 .TH LGRP_COOKIE_STALE 3LGRP "Apr 16, 2003"
8 lgrp_cookie_stale \- determine whether snapshot of lgroup hierarchy is stale
12 cc [ \fIflag \&.\|.\|.\fR ] \fIfile\fR\&.\|.\|. \fB-llgrp\fR [ \fIlibrary \&.\|.\|.\fR ]
13 #include <sys/lgrp_user.h>
15 \fBint\fR \fBlgrp_cookie_stale\fR(\fBlgrp_cookie_t\fR \fIcookie\fR);
21 The \fBlgrp_cookie_stale()\fR function takes a \fIcookie\fR representing the
22 snapshot of the lgroup hierarchy obtained from \fBlgrp_init\fR(3LGRP) and
23 returns whether it is stale. The snapshot can become out-of-date for a number
24 of reasons depending on its view. If the snapshot was taken with
25 \fBLGRP_VIEW_OS\fR, changes in the lgroup hierarchy from dynamic
26 reconfiguration, CPU on/offline, or other conditions can cause the snapshot to
27 become out-of-date. A snapshot taken with \fBLGRP_VIEW_CALLER\fR can be
28 affected by the caller's processor set binding and changes in its processor set
29 itself, as well as changes in the lgroup hierarchy.
32 If the snapshot needs to be updated, \fBlgrp_fini\fR(3LGRP) should be called
33 with the old cookie and \fBlgrp_init()\fR should be called to obtain a new
38 Upon successful completion, \fBlgrp_cookie_stale()\fR returns whether the
39 cookie is stale. Otherwise, it returns \(mi1 and sets \fBerrno\fR to indicate
44 The \fBlgrp_cookie_stale()\fR function will fail if:
51 The cookie is not valid.
57 See \fBattributes\fR(5) for descriptions of the following attributes:
65 ATTRIBUTE TYPE ATTRIBUTE VALUE
67 Interface Stability Evolving
75 \fBlgrp_init\fR(3LGRP), \fBlgrp_fini\fR(3LGRP), \fBlgrp_view\fR(3LGRP),
76 \fBliblgrp\fR(3LIB), \fBattributes\fR(5)