diff options
Diffstat (limited to 'regressions/ck_brlock/benchmark/latency.c')
| -rw-r--r-- | regressions/ck_brlock/benchmark/latency.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/regressions/ck_brlock/benchmark/latency.c b/regressions/ck_brlock/benchmark/latency.c deleted file mode 100644 index 4db8e269baad..000000000000 --- a/regressions/ck_brlock/benchmark/latency.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * 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_brlock.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_brlock_t brlock = CK_BRLOCK_INITIALIZER; - ck_brlock_reader_t r[8]; - ck_rwlock_t naive; - - for (i = 0; i < sizeof(r) / sizeof(*r); i++) - ck_brlock_read_register(&brlock, &r[i]); - - for (i = 0; i < STEPS; i++) { - ck_brlock_write_lock(&brlock); - ck_brlock_write_unlock(&brlock); - } - - s_b = rdtsc(); - for (i = 0; i < STEPS; i++) { - ck_brlock_write_lock(&brlock); - ck_brlock_write_unlock(&brlock); - } - e_b = rdtsc(); - printf("WRITE: brlock %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_brlock_read_lock(&brlock, &r[0]); - ck_brlock_read_unlock(&r[0]); - } - s_b = rdtsc(); - for (i = 0; i < STEPS; i++) { - ck_brlock_read_lock(&brlock, &r[0]); - ck_brlock_read_unlock(&r[0]); - } - e_b = rdtsc(); - printf("READ: brlock %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); -} - |