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175 lines
6.2 KiB
C++
175 lines
6.2 KiB
C++
/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
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#ident "$Id$"
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/*
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COPYING CONDITIONS NOTICE:
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This program is free software; you can redistribute it and/or modify
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it under the terms of version 2 of the GNU General Public License as
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published by the Free Software Foundation, and provided that the
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following conditions are met:
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* Redistributions of source code must retain this COPYING
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CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
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DISCLAIMER (below), the UNIVERSITY PATENT NOTICE (below), the
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PATENT MARKING NOTICE (below), and the PATENT RIGHTS
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GRANT (below).
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* Redistributions in binary form must reproduce this COPYING
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CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
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DISCLAIMER (below), the UNIVERSITY PATENT NOTICE (below), the
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PATENT MARKING NOTICE (below), and the PATENT RIGHTS
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GRANT (below) in the documentation and/or other materials
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provided with the distribution.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA.
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COPYRIGHT NOTICE:
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TokuDB, Tokutek Fractal Tree Indexing Library.
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Copyright (C) 2007-2013 Tokutek, Inc.
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DISCLAIMER:
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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UNIVERSITY PATENT NOTICE:
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The technology is licensed by the Massachusetts Institute of
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Technology, Rutgers State University of New Jersey, and the Research
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Foundation of State University of New York at Stony Brook under
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United States of America Serial No. 11/760379 and to the patents
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and/or patent applications resulting from it.
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PATENT MARKING NOTICE:
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This software is covered by US Patent No. 8,185,551.
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This software is covered by US Patent No. 8,489,638.
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PATENT RIGHTS GRANT:
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"THIS IMPLEMENTATION" means the copyrightable works distributed by
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Tokutek as part of the Fractal Tree project.
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"PATENT CLAIMS" means the claims of patents that are owned or
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licensable by Tokutek, both currently or in the future; and that in
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the absence of this license would be infringed by THIS
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IMPLEMENTATION or by using or running THIS IMPLEMENTATION.
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"PATENT CHALLENGE" shall mean a challenge to the validity,
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patentability, enforceability and/or non-infringement of any of the
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PATENT CLAIMS or otherwise opposing any of the PATENT CLAIMS.
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Tokutek hereby grants to you, for the term and geographical scope of
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the PATENT CLAIMS, a non-exclusive, no-charge, royalty-free,
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irrevocable (except as stated in this section) patent license to
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make, have made, use, offer to sell, sell, import, transfer, and
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otherwise run, modify, and propagate the contents of THIS
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IMPLEMENTATION, where such license applies only to the PATENT
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CLAIMS. This grant does not include claims that would be infringed
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only as a consequence of further modifications of THIS
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IMPLEMENTATION. If you or your agent or licensee institute or order
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or agree to the institution of patent litigation against any entity
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(including a cross-claim or counterclaim in a lawsuit) alleging that
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THIS IMPLEMENTATION constitutes direct or contributory patent
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infringement, or inducement of patent infringement, then any rights
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granted to you under this License shall terminate as of the date
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such litigation is filed. If you or your agent or exclusive
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licensee institute or order or agree to the institution of a PATENT
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CHALLENGE, then Tokutek may terminate any rights granted to you
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under this License.
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*/
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#ident "Copyright (c) 2011-2013 Tokutek Inc. All rights reserved."
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/types.h>
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uint64_t x1764_simple (const uint64_t *buf, size_t len)
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{
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uint64_t sum=0;
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for (size_t i=0; i<len ;i++) {
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sum = sum*17 + buf[i];
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}
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return sum;
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}
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uint64_t x1764_2x (const uint64_t *buf, size_t len)
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{
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assert(len%2==0);
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uint64_t suma=0, sumb=0;
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for (size_t i=0; i<len ;i+=2) {
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suma = suma*(17L*17L) + buf[i];
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sumb = sumb*(17L*17L) + buf[i+1];
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}
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return suma*17+sumb;
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}
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uint64_t x1764_3x (const uint64_t *buf, size_t len)
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{
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assert(len%3==0);
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uint64_t suma=0, sumb=0, sumc=0;
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for (size_t i=0; i<len ;i+=3) {
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suma = suma*(17LL*17LL*17LL) + buf[i];
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sumb = sumb*(17LL*17LL*17LL) + buf[i+1];
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sumc = sumc*(17LL*17LL*17LL) + buf[i+2];
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}
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uint64_t r = suma*17L*17L + sumb*17L + sumc;
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return r;
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}
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uint64_t x1764_4x (const uint64_t *buf, size_t len)
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{
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assert(len%4==0);
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uint64_t suma=0, sumb=0, sumc=0, sumd=0;
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for (size_t i=0; i<len ;i+=4) {
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suma = suma*(17LL*17LL*17LL*17LL) + buf[i];
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sumb = sumb*(17LL*17LL*17LL*17LL) + buf[i+1];
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sumc = sumc*(17LL*17LL*17LL*17LL) + buf[i+2];
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sumd = sumd*(17LL*17LL*17LL*17LL) + buf[i+3];
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}
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return suma*17L*17L*17L + sumb*17L*17L + sumc*17L + sumd;
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}
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float tdiff (struct timeval *start, struct timeval *end) {
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return (end->tv_sec-start->tv_sec) +1e-6*(end->tv_usec - start->tv_usec);
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}
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int main (int argc, char *argv[]) {
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int size = 1024*1024*4 + 8*4;
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char *data = malloc(size);
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for (int j=0; j<4; j++) {
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struct timeval start,end,end2,end3,end4;
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for (int i=0; i<size; i++) data[i]=i*i+j;
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gettimeofday(&start, 0);
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uint64_t s = x1764_simple((uint64_t*)data, size/sizeof(uint64_t));
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gettimeofday(&end, 0);
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uint64_t s2 = x1764_2x((uint64_t*)data, size/sizeof(uint64_t));
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gettimeofday(&end2, 0);
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uint64_t s3 = x1764_3x((uint64_t*)data, size/sizeof(uint64_t));
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gettimeofday(&end3, 0);
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uint64_t s4 = x1764_4x((uint64_t*)data, size/sizeof(uint64_t));
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gettimeofday(&end4, 0);
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assert(s==s2);
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assert(s==s3);
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assert(s==s4);
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double b1 = tdiff(&start, &end);
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double b2 = tdiff(&end, &end2);
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double b3 = tdiff(&end2, &end3);
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double b4 = tdiff(&end3, &end4);
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printf("s=%016llx t=%.6fs %.6fs (%4.2fx), %.6fs (%4.2fx), %.6fs (%4.2fx) [%5.2f MB/s]\n",
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(unsigned long long)s,
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b1, b2, b1/b2, b3, b1/b3, b4, b1/b4, (size/b4)/(1024*1024));
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}
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return 0;
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}
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