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104 lines
2.9 KiB
104 lines
2.9 KiB
/*
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* Copyright 2011-2015 Samy Al Bahra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <ck_brlock.h>
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#include <ck_rwlock.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include "../../common.h"
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#ifndef STEPS
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#define STEPS 1000000
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#endif
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int
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main(void)
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{
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uint64_t s_b, e_b, i;
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ck_brlock_t brlock = CK_BRLOCK_INITIALIZER;
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ck_brlock_reader_t r[8];
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ck_rwlock_t naive;
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for (i = 0; i < sizeof(r) / sizeof(*r); i++)
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ck_brlock_read_register(&brlock, &r[i]);
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for (i = 0; i < STEPS; i++) {
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ck_brlock_write_lock(&brlock);
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ck_brlock_write_unlock(&brlock);
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}
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s_b = rdtsc();
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for (i = 0; i < STEPS; i++) {
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ck_brlock_write_lock(&brlock);
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ck_brlock_write_unlock(&brlock);
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}
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e_b = rdtsc();
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printf("WRITE: brlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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ck_rwlock_init(&naive);
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for (i = 0; i < STEPS; i++) {
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ck_rwlock_write_lock(&naive);
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ck_rwlock_write_unlock(&naive);
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}
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s_b = rdtsc();
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for (i = 0; i < STEPS; i++) {
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ck_rwlock_write_lock(&naive);
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ck_rwlock_write_unlock(&naive);
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}
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e_b = rdtsc();
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printf("WRITE: naive %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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for (i = 0; i < STEPS; i++) {
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ck_brlock_read_lock(&brlock, &r[0]);
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ck_brlock_read_unlock(&r[0]);
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}
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s_b = rdtsc();
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for (i = 0; i < STEPS; i++) {
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ck_brlock_read_lock(&brlock, &r[0]);
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ck_brlock_read_unlock(&r[0]);
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}
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e_b = rdtsc();
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printf("READ: brlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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for (i = 0; i < STEPS; i++) {
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ck_rwlock_read_lock(&naive);
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ck_rwlock_read_unlock(&naive);
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}
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s_b = rdtsc();
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for (i = 0; i < STEPS; i++) {
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ck_rwlock_read_lock(&naive);
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ck_rwlock_read_unlock(&naive);
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}
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e_b = rdtsc();
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printf("READ: naive %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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return (0);
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}
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