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openmpi/opal/mca/paffinity/linux/paffinity_linux.h
Jeff Squyres 0af7ac53f2 Fixes trac:1392, #1400
* add "register" function to mca_base_component_t
   * converted coll:basic and paffinity:linux and paffinity:solaris to
     use this function
   * we'll convert the rest over time (I'll file a ticket once all
     this is committed)
 * add 32 bytes of "reserved" space to the end of mca_base_component_t
   and mca_base_component_data_2_0_0_t to make future upgrades
   [slightly] easier
   * new mca_base_component_t size: 196 bytes
   * new mca_base_component_data_2_0_0_t size: 36 bytes
 * MCA base version bumped to v2.0
   * '''We now refuse to load components that are not MCA v2.0.x'''
 * all MCA frameworks versions bumped to v2.0
 * be a little more explicit about version numbers in the MCA base
   * add big comment in mca.h about versioning philosophy

This commit was SVN r19073.

The following Trac tickets were found above:
  Ticket 1392 --> https://svn.open-mpi.org/trac/ompi/ticket/1392
2008-07-28 22:40:57 +00:00

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C

/*
* Copyright (c) 2004-2008 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2007 Cisco Systems, Inc. All rights reserved.
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/**
* @file
*
* Processor affinity for Linux.
*
* Linux sucks. There are at least 3 different ways that
* sched_setaffinity is implemented.
*
* Fortunately we have an independent project called Portable Linux
* Processor Affinity (PLPA) which allows us to do processor affinity
* without knowing which flavor of afffinity is installed on the
* system a priori - PLPA does a few probes behind the scenes and
* utilizes the correct syntax to the correct system call to set
* or get processor affinity for us.
*
*/
#ifndef MCA_PAFFINITY_LINUX_EXPORT_H
#define MCA_PAFFINITY_LINUX_EXPORT_H
#include "opal_config.h"
#include "opal/mca/mca.h"
#include "opal/mca/paffinity/paffinity.h"
#include "opal/mca/paffinity/linux/plpa/src/libplpa/plpa.h"
#if defined(c_plusplus) || defined(__cplusplus)
extern "C" {
#endif
/**
* Globally exported variable
*/
OPAL_DECLSPEC extern const opal_paffinity_base_component_2_0_0_t
mca_paffinity_linux_component;
/**
* paffinity query API function
*
* Query function for paffinity components. Simply returns a priority
* to rank it against other available paffinity components (assumedly,
* only one component will be available per platform, but it's
* possible that there could be more than one available).
*/
int opal_paffinity_linux_component_query(mca_base_module_t **module, int *priority);
#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif /* MCA_PAFFINITY_LINUX_EXPORT_H */