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/*
* 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) 2007 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2010-2011 Los Alamos National Security, LLC.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_SHMEM_POSIX_EXPORT_H
#define MCA_SHMEM_POSIX_EXPORT_H
#include "opal_config.h"
#include "opal/mca/mca.h"
#include "opal/mca/shmem/shmem.h"
/* max number of attempts to find an available shm_open file name. see
* comments below for more details.
*/
#define OPAL_SHMEM_POSIX_MAX_ATTEMPTS 128
/* need the '/' for Solaris 10 and others, i'm sure */
#define OPAL_SHMEM_POSIX_FILE_NAME_PREFIX "/open_mpi."
/* posix sm file name length max. on some systems shm_open's file name limit
* is pretty low (32 chars, for instance). 16 is plenty for our needs, but
* extra work on our end is needed to ensure things work properly. if a
* system's limit is lower than OPAL_SHMEM_POSIX_FILE_LEN_MAX, then the
* run-time test will catch that fact and posix sm will be disqualified. see
* comments regarding this in shmem_posix_module.c.
*/
#define OPAL_SHMEM_POSIX_FILE_LEN_MAX 16
BEGIN_C_DECLS
/* globally exported variable to hold the posix component. */
typedef struct opal_shmem_posix_component_t {
/* base component struct */
opal_shmem_base_component_t super;
/* priority for posix component */
int priority;
} opal_shmem_posix_component_t;
OPAL_DECLSPEC extern opal_shmem_posix_component_t mca_shmem_posix_component;
typedef struct opal_shmem_posix_module_t {
opal_shmem_base_module_t super;
} opal_shmem_posix_module_t;
extern opal_shmem_posix_module_t opal_shmem_posix_module;
END_C_DECLS
#endif /* MCA_SHMEM_POSIX_EXPORT_H */
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