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/*
* Copyright 2011-2015 Samy Al Bahra.
* All rights reserved.
*
* 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 above 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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.
*/
#include <ck_bytelock.h>
#include <ck_rwlock.h>
#include <inttypes.h>
#include <stdio.h>
#include "../../common.h"
#ifndef STEPS
#define STEPS 1000000
#endif
int
main(void)
{
uint64_t s_b, e_b, i;
ck_bytelock_t bytelock = CK_BYTELOCK_INITIALIZER;
ck_rwlock_t naive;
for (i = 0; i < STEPS; i++) {
ck_bytelock_write_lock(&bytelock, 1);
ck_bytelock_write_unlock(&bytelock);
}
s_b = rdtsc();
for (i = 0; i < STEPS; i++) {
ck_bytelock_write_lock(&bytelock, 1);
ck_bytelock_write_unlock(&bytelock);
}
e_b = rdtsc();
printf("WRITE: bytelock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
ck_rwlock_init(&naive);
for (i = 0; i < STEPS; i++) {
ck_rwlock_write_lock(&naive);
ck_rwlock_write_unlock(&naive);
}
s_b = rdtsc();
for (i = 0; i < STEPS; i++) {
ck_rwlock_write_lock(&naive);
ck_rwlock_write_unlock(&naive);
}
e_b = rdtsc();
printf("WRITE: naive %15" PRIu64 "\n", (e_b - s_b) / STEPS);
for (i = 0; i < STEPS; i++) {
ck_bytelock_read_lock(&bytelock, 1);
ck_bytelock_read_unlock(&bytelock, 1);
}
s_b = rdtsc();
for (i = 0; i < STEPS; i++) {
ck_bytelock_read_lock(&bytelock, 1);
ck_bytelock_read_unlock(&bytelock, 1);
}
e_b = rdtsc();
printf("READ: bytelock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
for (i = 0; i < STEPS; i++) {
ck_rwlock_read_lock(&naive);
ck_rwlock_read_unlock(&naive);
}
s_b = rdtsc();
for (i = 0; i < STEPS; i++) {
ck_rwlock_read_lock(&naive);
ck_rwlock_read_unlock(&naive);
}
e_b = rdtsc();
printf("READ: naive %15" PRIu64 "\n", (e_b - s_b) / STEPS);
return (0);
}
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