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 version
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 current 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\n",
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)


April 16, 2003 LGRP_VERSION(3LGRP)