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/*
* Copyright 2013-2015 Samy Al Bahra.
* Copyright 2013 Brendon Scheinman.
* 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_rwcohort.h>
#include <ck_spinlock.h>
#include <inttypes.h>
#include <stdio.h>
#include "../../common.h"
#ifndef STEPS
#define STEPS 1000000
#endif
static void
ck_spinlock_fas_lock_with_context(ck_spinlock_fas_t *lock, void *context)
{
(void)context;
ck_spinlock_fas_lock(lock);
}
static void
ck_spinlock_fas_unlock_with_context(ck_spinlock_fas_t *lock, void *context)
{
(void)context;
ck_spinlock_fas_unlock(lock);
}
static bool
ck_spinlock_fas_locked_with_context(ck_spinlock_fas_t *lock, void *context)
{
(void)context;
return ck_spinlock_fas_locked(lock);
}
CK_COHORT_PROTOTYPE(fas_fas,
ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_locked_with_context,
ck_spinlock_fas_lock_with_context, ck_spinlock_fas_unlock_with_context, ck_spinlock_fas_locked_with_context)
LOCK_PROTOTYPE(fas_fas)
int
main(void)
{
uint64_t s_b, e_b, i;
ck_spinlock_fas_t global_lock = CK_SPINLOCK_FAS_INITIALIZER;
ck_spinlock_fas_t local_lock = CK_SPINLOCK_FAS_INITIALIZER;
CK_COHORT_INSTANCE(fas_fas) cohort = CK_COHORT_INITIALIZER;
LOCK_INSTANCE(fas_fas) rw_cohort = LOCK_INITIALIZER;
CK_COHORT_INIT(fas_fas, &cohort, &global_lock, &local_lock,
CK_COHORT_DEFAULT_LOCAL_PASS_LIMIT);
LOCK_INIT(fas_fas, &rw_cohort, CK_RWCOHORT_WP_DEFAULT_WAIT_LIMIT);
for (i = 0; i < STEPS; i++) {
WRITE_LOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
WRITE_UNLOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
}
s_b = rdtsc();
for (i = 0; i < STEPS; i++) {
WRITE_LOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
WRITE_UNLOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
}
e_b = rdtsc();
printf("WRITE: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
for (i = 0; i < STEPS; i++) {
READ_LOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
READ_UNLOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
}
s_b = rdtsc();
for (i = 0; i < STEPS; i++) {
READ_LOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
READ_UNLOCK(fas_fas, &rw_cohort, &cohort, NULL, NULL);
}
e_b = rdtsc();
printf("READ: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
return (0);
}
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