lgrp_view(3LGRP) Locality Group Library Functions lgrp_view(3LGRP)NAME
lgrp_view - get view of lgroup hierarchy
SYNOPSIS
cc [ flag ... ] file... -llgrp [ library ... ]
#include <sys/lgrp_user.h>
lgrp_view_t lgrp_view(lgrp_cookie_t cookie);
DESCRIPTION
The lgrp_view() function takes a cookie representing the snapshot of the lgroup hierarchy obtained from lgrp_init(3LGRP) and returns the
snapshot's view of the lgroup hierarchy.
If the given view is LGRP_VIEW_CALLER, the snapshot contains only the resources that are available to the caller (such as those with
respect to processor sets). When the view is LGRP_VIEW_OS, the snapshot contains what is available to the operating system.
RETURN VALUES
Upon succesful completion, lgrp_view() returns the view for the snapshot of the lgroup hierarchy represented by the given cookie. Other-
wise, -1 is returned and errno is set to indicate the error.
ERRORS
The lgrp_view() function will fail if:
EINVAL The cookie is not valid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO lgrp_cookie_stale(3LGRP), lgrp_fini(3LGRP), lgrp_init(3LGRP), liblgrp(3LIB), attributes(5)SunOS 5.11 16 Apr 2003 lgrp_view(3LGRP)
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lgrp_cookie_stale(3LGRP) Locality Group Library Functions lgrp_cookie_stale(3LGRP)NAME
lgrp_cookie_stale - determine whether snapshot of lgroup hierarchy is stale
SYNOPSIS
cc [ flag ... ] file... -llgrp [ library ... ]
#include <sys/lgrp_user.h>
int lgrp_cookie_stale(lgrp_cookie_t cookie);
DESCRIPTION
The lgrp_cookie_stale() function takes a cookie representing the snapshot of the lgroup hierarchy obtained from lgrp_init(3LGRP) and
returns whether it is stale. The snapshot can become out-of-date for a number of reasons depending on its view. If the snapshot was taken
with LGRP_VIEW_OS, changes in the lgroup hierarchy from dynamic reconfiguration, CPU on/offline, or other conditions can cause the snapshot
to become out-of-date. A snapshot taken with LGRP_VIEW_CALLER can be affected by the caller's processor set binding and changes in its
processor set itself, as well as changes in the lgroup hierarchy.
If the snapshot needs to be updated, lgrp_fini(3LGRP) should be called with the old cookie and lgrp_init() should be called to obtain a new
snapshot.
RETURN VALUES
Upon successful completion, lgrp_cookie_stale() returns whether the cookie is stale. Otherwise, it returns -1 and sets errno to indicate
the error.
ERRORS
The lgrp_cookie_stale() function will fail if:
EINVAL The cookie is not valid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO lgrp_init(3LGRP), lgrp_fini(3LGRP), lgrp_view(3LGRP), liblgrp(3LIB), attributes(5)SunOS 5.10 16 Apr 2003 lgrp_cookie_stale(3LGRP)
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