/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#include        <stdio.h>
#include        "_debug.h"
#include        "msg.h"
#include        "libld.h"

static const char *
fmt_human_units(size_t bytes, char *buf, size_t bufsize)
{
        static int      unit_arr[] = { 'K', 'M', 'G', 'T' };

        int             i, unit_ch;
        size_t          unit_bytes = bytes;

        /* Convert to human readable units */
        for (i = 0; i < sizeof (unit_arr) / sizeof (unit_arr[0]); i++) {
                if (unit_bytes < 1024)
                        break;
                unit_ch = unit_arr[i];
                unit_bytes /= 1024;
        }
        if (unit_bytes == bytes)
                buf[0] = '\0';
        else
                (void) snprintf(buf, bufsize, MSG_ORIG(MSG_FMT_MEMUNIT),
                    EC_XWORD(unit_bytes), unit_ch);

        return (buf);
}

/*
 * Generate a relocation cache statistics line for the active or
 * output relocation cache.
 *
 * entry:
 *      ofl - output file descriptor
 *      alp - One of ofl->ofl_actrels or ofl->ofl_outrels.
 */
static void
rel_cache_statistics(Ofl_desc *ofl, const char *title, APlist *alp)
{
        Lm_list         *lml = ofl->ofl_lml;
        size_t          desc_cnt = 0, desc_used = 0, bytes;
        Aliste          idx;
        Rel_cachebuf    *rcp;
        char            unit_buf[CONV_INV_BUFSIZE + 10];

        /* Sum the total memory allocated across all the buffers */
        for (APLIST_TRAVERSE(alp, idx, rcp)) {
                desc_cnt += rcp->rc_end - rcp->rc_arr;
                desc_used += rcp->rc_free - rcp->rc_arr;
        }
        bytes = desc_cnt * sizeof (Rel_desc);

        dbg_print(lml, MSG_INTL(MSG_STATS_REL_CACHE), title,
            EC_WORD(aplist_nitems(alp)),
            EC_XWORD(desc_used), EC_XWORD(desc_cnt),
            (desc_cnt == 0) ? 100 : EC_WORD((desc_used * 100) / desc_cnt),
            EC_XWORD(bytes),
            fmt_human_units(bytes, unit_buf, sizeof (unit_buf)));
}


/*
 * Generate a statistics line for the auxiliary relocation descriptor cache.
 *
 * entry:
 *      ofl - output file descriptor
 */
static void
rel_aux_cache_statistics(Ofl_desc *ofl)
{
        Rel_aux_cachebuf        *racp;
        Lm_list *lml = ofl->ofl_lml;
        size_t  desc_cnt = 0, desc_used = 0, bytes;
        Aliste  idx;
        char    unit_buf[CONV_INV_BUFSIZE + 10];

        /* Sum the total memory allocated across all the buffers */
        for (APLIST_TRAVERSE(ofl->ofl_relaux, idx, racp)) {
                desc_cnt += racp->rac_end - racp->rac_arr;
                desc_used += racp->rac_free - racp->rac_arr;
        }
        bytes = desc_cnt * sizeof (Rel_desc);

        dbg_print(lml, MSG_INTL(MSG_STATS_REL_ACACHE),
            EC_WORD(aplist_nitems(ofl->ofl_relaux)),
            EC_XWORD(desc_used), EC_XWORD(desc_cnt),
            (desc_cnt == 0) ? 100 : EC_WORD((desc_used * 100) / desc_cnt),
            EC_XWORD(bytes),
            fmt_human_units(bytes, unit_buf, sizeof (unit_buf)));
}


void
Dbg_statistics_ld(Ofl_desc *ofl)
{
        Lm_list *lml = ofl->ofl_lml;

        if (DBG_NOTCLASS(DBG_C_STATS))
                return;

        Dbg_util_nl(lml, DBG_NL_STD);
        dbg_print(lml, MSG_INTL(MSG_STATS_GENERAL));

        if (ofl->ofl_objscnt || ofl->ofl_soscnt || ofl->ofl_arscnt) {
                dbg_print(lml, MSG_INTL(MSG_STATS_FILES),
                    EC_XWORD(ofl->ofl_objscnt), EC_XWORD(ofl->ofl_soscnt),
                    EC_XWORD(ofl->ofl_arscnt));
        }

        if (ofl->ofl_locscnt || ofl->ofl_globcnt) {
                dbg_print(lml, MSG_INTL(MSG_STATS_SYMBOLS_OUT),
                    EC_XWORD(ofl->ofl_globcnt), EC_XWORD(ofl->ofl_locscnt));
        }
        if (ofl->ofl_entercnt || ofl->ofl_scopecnt || ofl->ofl_elimcnt) {
                dbg_print(lml, MSG_INTL(MSG_STATS_SYMBOLS_IN),
                    EC_XWORD(ofl->ofl_entercnt), EC_XWORD(ofl->ofl_scopecnt),
                    EC_XWORD(ofl->ofl_elimcnt));
        }

        dbg_print(lml, MSG_INTL(MSG_STATS_REL_OUT),
            EC_XWORD(ofl->ofl_outrels.rc_cnt));

        dbg_print(lml, MSG_INTL(MSG_STATS_REL_IN),
            EC_XWORD(ofl->ofl_entrelscnt), EC_XWORD(ofl->ofl_actrels.rc_cnt));

        dbg_print(lml, MSG_INTL(MSG_STATS_REL_TICACHE));
        rel_cache_statistics(ofl, MSG_INTL(MSG_STATS_REL_TIOUT),
            ofl->ofl_outrels.rc_list);
        rel_cache_statistics(ofl, MSG_INTL(MSG_STATS_REL_TIACT),
            ofl->ofl_actrels.rc_list);
        rel_aux_cache_statistics(ofl);
}

void
Dbg_statistics_ar(Ofl_desc *ofl)
{
        Aliste          idx;
        Ar_desc         *adp;
        Elf_Arsym       *arsym;
        Ar_aux          *aux;
        Lm_list         *lml = ofl->ofl_lml;

        if (DBG_NOTCLASS(DBG_C_STATS | DBG_C_UNUSED))
                return;

        Dbg_util_nl(lml, DBG_NL_STD);
        for (APLIST_TRAVERSE(ofl->ofl_ars, idx, adp)) {
                size_t  poffset = 0;
                uint_t  count = 0, used = 0;

                if ((adp->ad_flags & FLG_ARD_EXTRACT) == 0) {
                        Dbg_unused_file(lml, adp->ad_name, 0, 0);
                        continue;
                }

                if (DBG_NOTCLASS(DBG_C_STATS))
                        continue;

                arsym = adp->ad_start;
                aux = adp->ad_aux;
                while ((arsym != NULL) && (arsym->as_off != 0)) {
                        /*
                         * Assume that symbols from the same member file are
                         * adjacent within the archive symbol table.
                         */
                        if (poffset != arsym->as_off) {
                                count++;
                                poffset = arsym->as_off;
                                if (aux->au_mem == FLG_ARMEM_PROC)
                                        used++;
                        }
                        aux++, arsym++;
                }
                if ((count == 0) || (used == 0))
                        continue;

                dbg_print(lml, MSG_INTL(MSG_STATS_AR), adp->ad_name, count,
                    used, ((used * 100) / count));
        }
        Dbg_util_nl(lml, DBG_NL_STD);
}