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87 lines
2.5 KiB
87 lines
2.5 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_swlock.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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#define CK_F_PR_RTM
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#ifndef STEPS
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#define STEPS 2000000
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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_swlock_t swlock = CK_SWLOCK_INITIALIZER;
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for (i = 0; i < STEPS; i++) {
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ck_swlock_write_lock(&swlock);
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ck_swlock_write_unlock(&swlock);
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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_swlock_write_lock(&swlock);
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ck_swlock_write_unlock(&swlock);
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}
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e_b = rdtsc();
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printf(" WRITE: swlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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for (i = 0; i < STEPS; i++) {
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ck_swlock_read_lock(&swlock);
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ck_swlock_read_unlock(&swlock);
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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_swlock_read_lock(&swlock);
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ck_swlock_read_unlock(&swlock);
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}
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e_b = rdtsc();
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printf(" READ: swlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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for (i = 0; i < STEPS; i++) {
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ck_swlock_write_latch(&swlock);
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ck_swlock_write_unlatch(&swlock);
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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_swlock_write_latch(&swlock);
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ck_swlock_write_unlatch(&swlock);
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}
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e_b = rdtsc();
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printf(" LATCH: swlock %15" PRIu64 "\n", (e_b - s_b) / STEPS);
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return 0;
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}
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