/*
 * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2006 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
 * 
 * $HEADER$
 */
#include "ompi_config.h"

#include "ompi/mca/rcache/rcache.h"
#include "rcache_rb.h"

static int mca_rcache_rb_component_register(void);
static int mca_rcache_rb_component_open(void); 

static mca_rcache_base_module_t* mca_rcache_rb_component_init( void ); 

mca_rcache_rb_component_t mca_rcache_rb_component = {
    {
        {
            MCA_RCACHE_BASE_VERSION_2_0_0,

            "rb", /* MCA component name */
            OMPI_MAJOR_VERSION,  /* MCA component major version */
            OMPI_MINOR_VERSION,  /* MCA component minor version */
            OMPI_RELEASE_VERSION,  /* MCA component release version */
            mca_rcache_rb_component_open,  /* component open  */
            NULL, /* component close */
            NULL, /* component query */
            mca_rcache_rb_component_register
        },
        {
            /* The component is checkpoint ready */
            MCA_BASE_METADATA_PARAM_CHECKPOINT
        },
        mca_rcache_rb_component_init
    }
};

static int ompi_rcache_rb_reg_mru_len;
static int ompi_rcache_rb_mru_size;

static int mca_rcache_rb_component_register(void)
{
    ompi_rcache_rb_reg_mru_len = 256;
    (void) mca_base_component_var_register(&mca_rcache_rb_component.super.rcache_version,
                                           "mru_len",
                                           "The maximum size IN ENTRIES of the MRU (most recently used) rcache list",
                                           MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
                                           OPAL_INFO_LVL_9,
                                           MCA_BASE_VAR_SCOPE_READONLY,
                                           &ompi_rcache_rb_reg_mru_len);

    ompi_rcache_rb_mru_size = 1*1024*1024*1024; /* default to 1GB? */
    (void) mca_base_component_var_register(&mca_rcache_rb_component.super.rcache_version,
                                           "mru_size",
                                           "The maximum size IN BYTES of the MRU (most recently used) rcache list",
                                           MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
                                           OPAL_INFO_LVL_9,
                                           MCA_BASE_VAR_SCOPE_READONLY,
                                           &ompi_rcache_rb_mru_size);

    return OMPI_SUCCESS;
}

static int mca_rcache_rb_component_open(void)
{
    return OMPI_SUCCESS; 
}

mca_rcache_base_module_t* mca_rcache_rb_component_init(void) {
    mca_rcache_rb_module_t* rcache; 
    
    rcache = (mca_rcache_rb_module_t*) malloc(sizeof(mca_rcache_rb_module_t));
    mca_rcache_rb_module_init(rcache);
 
    rcache->reg_mru_len = (size_t) ompi_rcache_rb_reg_mru_len;
    rcache->reg_max_mru_size = (size_t) ompi_rcache_rb_mru_size;
    
    return &rcache->base; 
}