lgrp_version(3lgrp) [opensolaris man page]
lgrp_version(3LGRP) Locality Group Library Functions lgrp_version(3LGRP) NAME
lgrp_version - coordinate library and application versions SYNOPSIS
cc [ flag ... ] file... -llgrp [ library ... ] #include <sys/lgrp_user.h> int lgrp_version(const int version); DESCRIPTION
The lgrp_version() function takes an interface version number, version, as an argument and returns an lgroup interface version. The ver- sion argument should be the value of LGRP_VER_CURRENT bound to the application when it was compiled or LGRP_VER_NONE to find out the cur- rent lgroup interface version on the running system. RETURN VALUES
If version is still supported by the implementation, then lgrp_version() returns the requested version. If LGRP_VER_NONE is returned, the implementation cannot support the requested version. The application should be recompiled and might require further changes. If version is LGRP_VER_NONE, lgrp_version() returns the current version of the library. EXAMPLES
Example 1 Test whether the version of the interface used by the caller is supported. The following example tests whether the version of the interface used by the caller is supported: #include <sys/lgrp_user.h> if (lgrp_version(LGRP_VER_CURRENT) != LGRP_VER_CURRENT) { fprintf(stderr, "Built with unsupported lgroup interface %d ", LGRP_VER_CURRENT); exit(1); } 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), liblgrp(3LIB), attributes(5) SunOS 5.11 16 Apr 2003 lgrp_version(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 The snapshot can become out-of-date for a number of reasons depending on its view.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)