/*
 * Copyright (c) 2004-2005 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.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

/** @file:
 *
 * Populates global structure with system-specific information.
 *
 * Notes: add limits.h, compute size of integer and other types via sizeof(type)*CHAR_BIT
 *
 */

#include "orte_config.h"

#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#include "opal/class/opal_object.h"
#include "opal/class/opal_list.h"

#ifndef _ORTE_UNIV_INFO_H_
#define _ORTE_UNIV_INFO_H_

#if defined(c_plusplus) || defined(__cplusplus)
extern "C" {
#endif
    
    /* Some states for the orte_universe_t.state field */
    enum orte_universe_state_t {
        ORTE_UNIVERSE_STATE_PRE_INIT, /* Before initialization */
        ORTE_UNIVERSE_STATE_INIT,     /* In initalization      */
        ORTE_UNIVERSE_STATE_RUNNING,  /* After initalization   */
        ORTE_UNIVERSE_STATE_FINALIZE  /* In Finalization       */
    };
    typedef  enum orte_universe_state_t orte_universe_state_t;
    
    /* Define the info structure underlying the Open MPI universe system
     * instanced in ompi_rte_init.c */
    
    struct orte_universe_t {
        /** This is an object, so it must have a super */
        opal_list_item_t super;

        orte_universe_state_t state; /**< Indicates state of the universe */
        char *name;
        char *host;
        char *uid;
        bool persistence;
        char *scope;
        bool console;
        char *seed_uri;             /**< OOB contact info for universe seed */
        bool console_connected;     /**< Indicates if console is connected */
        char *scriptfile;           /**< Name of file containing commands to be executed */
    };
    typedef struct orte_universe_t orte_universe_t;

    OMPI_DECLSPEC OBJ_CLASS_DECLARATION(orte_universe_t);

OMPI_DECLSPEC extern orte_universe_t orte_universe_info;


/**
 * \internal
 *
 * Discover the universe info from the environment
 *
 * Called from \c orte_init.
 *
 * @retval ORTE_SUCCESS If values are successfully determined.
 * @retval ORTE_ERROR If the system does not provide the requested information.
 */
OMPI_DECLSPEC int orte_univ_info(void);

OMPI_DECLSPEC int orte_univ_info_finalize(void);

#if defined(c_plusplus) || defined(__cplusplus)
}
#endif
#endif