From e36b37583bebd229102f46c4ed7d2f6fad8697d4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 23 Jul 2021 13:24:09 +0200 Subject: Adding upstream version 0.6.0. Signed-off-by: Daniel Baumann --- regressions/ck_bytelock/benchmark/latency.c | 99 +++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 regressions/ck_bytelock/benchmark/latency.c (limited to 'regressions/ck_bytelock/benchmark/latency.c') diff --git a/regressions/ck_bytelock/benchmark/latency.c b/regressions/ck_bytelock/benchmark/latency.c new file mode 100644 index 0000000..be30165 --- /dev/null +++ b/regressions/ck_bytelock/benchmark/latency.c @@ -0,0 +1,99 @@ +/* + * 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 +#include +#include +#include + +#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); +} + -- cgit v1.2.3