/*
 * Copyright (c) 2004-2009 The Trustees of Indiana University.
 *                         All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "opal_config.h"

#include "opal/constants.h"
#include "opal/mca/crs/crs.h"
#include "opal/mca/crs/base/base.h"
#include "crs_none.h"

/*
 * Public string for version number
 */
const char *opal_crs_none_component_version_string = 
"OPAL CRS none MCA component version " OPAL_VERSION;

/*
 * Local functionality
 */
static int crs_none_open(void);
static int crs_none_close(void);

/*
 * Instantiate the public struct with all of our public information
 * and pointer to our public functions in it
 */
opal_crs_none_component_t mca_crs_none_component = {
    /* First do the base component stuff */
    {
        /* Handle the general mca_component_t struct containing 
         *  meta information about the component itnone
         */
        {
            OPAL_CRS_BASE_VERSION_2_0_0,

            /* Component name and version */
            "none",
            OPAL_MAJOR_VERSION,
            OPAL_MINOR_VERSION,
            OPAL_RELEASE_VERSION,
            
            /* Component open and close functions */
            crs_none_open,
            crs_none_close,
            opal_crs_none_component_query
        },
        {
            /* The component is checkpoint ready */
            MCA_BASE_METADATA_PARAM_CHECKPOINT
        },
        
        /* Verbosity level */
        0,
        /* opal_output handler */
        -1,
        /* Default priority */
        1
    }
};

/*
 * None module
 */
static opal_crs_base_module_t loc_module = {
    /** Initialization Function */
    opal_crs_none_module_init,
    /** Finalization Function */
    opal_crs_none_module_finalize,

    /** Checkpoint interface */
    opal_crs_none_checkpoint,

    /** Restart Command Access */
    opal_crs_none_restart,

    /** Disable checkpoints */
    opal_crs_none_disable_checkpoint,
    /** Enable checkpoints */
    opal_crs_none_enable_checkpoint,

    /** Prelaunch */
    opal_crs_none_prelaunch,

    /** Register Thread */
    opal_crs_none_reg_thread
};

bool opal_crs_none_select_warning = false;

static int crs_none_open(void) 
{
    int value = 0;

    mca_base_param_reg_int(&mca_crs_none_component.super.base_version,
                           "select_warning",
                           "Enable warning when the 'none' component is selected when checkpoint/restart functionality is requested."
                           "[Default = disabled/no-warning]",
                           false, false,
                           0, /* Disabled */
                           &value);
    opal_crs_none_select_warning = OPAL_INT_TO_BOOL(value);

    return OPAL_SUCCESS;
}

static int crs_none_close(void)
{
    return OPAL_SUCCESS;
}

int opal_crs_none_component_query(mca_base_module_t **module, int *priority)
{
    *module   = (mca_base_module_t *)&loc_module;
    *priority = mca_crs_none_component.super.priority;

    return OPAL_SUCCESS;
}