crypto/lhash/lh_stats.c

/* crypto/lhash/lh_stats.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/*
 * If you wish to build this outside of OpenSSL, remove the following lines
 * and things should work as expected
 */
#include "internal/cryptlib.h"

#include <openssl/bio.h>
#include <openssl/lhash.h>

# ifndef OPENSSL_NO_STDIO
void lh_stats(const _LHASH *lh, FILE *fp)
{
    BIO *bp;

    bp = BIO_new(BIO_s_file());
    if (bp == NULL)
        goto end;
    BIO_set_fp(bp, fp, BIO_NOCLOSE);
    lh_stats_bio(lh, bp);
    BIO_free(bp);
 end:;
}

void lh_node_stats(const _LHASH *lh, FILE *fp)
{
    BIO *bp;

    bp = BIO_new(BIO_s_file());
    if (bp == NULL)
        goto end;
    BIO_set_fp(bp, fp, BIO_NOCLOSE);
    lh_node_stats_bio(lh, bp);
    BIO_free(bp);
 end:;
}

void lh_node_usage_stats(const _LHASH *lh, FILE *fp)
{
    BIO *bp;

    bp = BIO_new(BIO_s_file());
    if (bp == NULL)
        goto end;
    BIO_set_fp(bp, fp, BIO_NOCLOSE);
    lh_node_usage_stats_bio(lh, bp);
    BIO_free(bp);
 end:;
}

# endif

void lh_stats_bio(const _LHASH *lh, BIO *out)
{
    BIO_printf(out, "num_items             = %lu\n", lh->num_items);
    BIO_printf(out, "num_nodes             = %u\n", lh->num_nodes);
    BIO_printf(out, "num_alloc_nodes       = %u\n", lh->num_alloc_nodes);
    BIO_printf(out, "num_expands           = %lu\n", lh->num_expands);
    BIO_printf(out, "num_expand_reallocs   = %lu\n", lh->num_expand_reallocs);
    BIO_printf(out, "num_contracts         = %lu\n", lh->num_contracts);
    BIO_printf(out, "num_contract_reallocs = %lu\n",
               lh->num_contract_reallocs);
    BIO_printf(out, "num_hash_calls        = %lu\n", lh->num_hash_calls);
    BIO_printf(out, "num_comp_calls        = %lu\n", lh->num_comp_calls);
    BIO_printf(out, "num_insert            = %lu\n", lh->num_insert);
    BIO_printf(out, "num_replace           = %lu\n", lh->num_replace);
    BIO_printf(out, "num_delete            = %lu\n", lh->num_delete);
    BIO_printf(out, "num_no_delete         = %lu\n", lh->num_no_delete);
    BIO_printf(out, "num_retrieve          = %lu\n", lh->num_retrieve);
    BIO_printf(out, "num_retrieve_miss     = %lu\n", lh->num_retrieve_miss);
    BIO_printf(out, "num_hash_comps        = %lu\n", lh->num_hash_comps);
}

void lh_node_stats_bio(const _LHASH *lh, BIO *out)
{
    LHASH_NODE *n;
    unsigned int i, num;

    for (i = 0; i < lh->num_nodes; i++) {
        for (n = lh->b[i], num = 0; n != NULL; n = n->next)
            num++;
        BIO_printf(out, "node %6u -> %3u\n", i, num);
    }
}

void lh_node_usage_stats_bio(const _LHASH *lh, BIO *out)
{
    LHASH_NODE *n;
    unsigned long num;
    unsigned int i;
    unsigned long total = 0, n_used = 0;

    for (i = 0; i < lh->num_nodes; i++) {
        for (n = lh->b[i], num = 0; n != NULL; n = n->next)
            num++;
        if (num != 0) {
            n_used++;
            total += num;
        }
    }
    BIO_printf(out, "%lu nodes used out of %u\n", n_used, lh->num_nodes);
    BIO_printf(out, "%lu items\n", total);
    if (n_used == 0)
        return;
    BIO_printf(out, "load %d.%02d  actual load %d.%02d\n",
               (int)(total / lh->num_nodes),
               (int)((total % lh->num_nodes) * 100 / lh->num_nodes),
               (int)(total / n_used), (int)((total % n_used) * 100 / n_used));
}