diff options
Diffstat (limited to 'regressions/ck_rwlock/benchmark/latency.c')
-rw-r--r-- | regressions/ck_rwlock/benchmark/latency.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/regressions/ck_rwlock/benchmark/latency.c b/regressions/ck_rwlock/benchmark/latency.c new file mode 100644 index 0000000..18213c6 --- /dev/null +++ b/regressions/ck_rwlock/benchmark/latency.c @@ -0,0 +1,134 @@ +/* + * 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_rwlock.h> +#include <inttypes.h> +#include <stdio.h> + +#include "../../common.h" + +#define CK_F_PR_RTM + +#ifndef STEPS +#define STEPS 2000000 +#endif + +int +main(void) +{ + uint64_t s_b, e_b, i; + ck_rwlock_t rwlock = CK_RWLOCK_INITIALIZER; + + for (i = 0; i < STEPS; i++) { + ck_rwlock_write_lock(&rwlock); + ck_rwlock_write_unlock(&rwlock); + } + + s_b = rdtsc(); + for (i = 0; i < STEPS; i++) { + ck_rwlock_write_lock(&rwlock); + ck_rwlock_write_unlock(&rwlock); + } + e_b = rdtsc(); + printf(" WRITE: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS); + +#ifdef CK_F_PR_RTM + struct ck_elide_config config = CK_ELIDE_CONFIG_DEFAULT_INITIALIZER; + struct ck_elide_stat st = CK_ELIDE_STAT_INITIALIZER; + + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK(ck_rwlock_write, &rwlock); + CK_ELIDE_UNLOCK(ck_rwlock_write, &rwlock); + } + + s_b = rdtsc(); + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK(ck_rwlock_write, &rwlock); + CK_ELIDE_UNLOCK(ck_rwlock_write, &rwlock); + } + e_b = rdtsc(); + printf(" (rtm) WRITE: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS); + + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK_ADAPTIVE(ck_rwlock_write, &st, &config, &rwlock); + CK_ELIDE_UNLOCK_ADAPTIVE(ck_rwlock_write, &st, &rwlock); + } + + s_b = rdtsc(); + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK_ADAPTIVE(ck_rwlock_write, &st, &config, &rwlock); + CK_ELIDE_UNLOCK_ADAPTIVE(ck_rwlock_write, &st, &rwlock); + } + e_b = rdtsc(); + printf(" (rtm-adaptive) WRITE: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS); +#endif /* CK_F_PR_RTM */ + + for (i = 0; i < STEPS; i++) { + ck_rwlock_read_lock(&rwlock); + ck_rwlock_read_unlock(&rwlock); + } + + s_b = rdtsc(); + for (i = 0; i < STEPS; i++) { + ck_rwlock_read_lock(&rwlock); + ck_rwlock_read_unlock(&rwlock); + } + e_b = rdtsc(); + printf(" READ: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS); + +#ifdef CK_F_PR_RTM + ck_elide_stat_init(&st); + + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK(ck_rwlock_read, &rwlock); + CK_ELIDE_UNLOCK(ck_rwlock_read, &rwlock); + } + + s_b = rdtsc(); + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK(ck_rwlock_read, &rwlock); + CK_ELIDE_UNLOCK(ck_rwlock_read, &rwlock); + } + e_b = rdtsc(); + printf(" (rtm) READ: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS); + + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK_ADAPTIVE(ck_rwlock_read, &st, &config, &rwlock); + CK_ELIDE_UNLOCK_ADAPTIVE(ck_rwlock_read, &st, &rwlock); + } + + s_b = rdtsc(); + for (i = 0; i < STEPS; i++) { + CK_ELIDE_LOCK_ADAPTIVE(ck_rwlock_read, &st, &config, &rwlock); + CK_ELIDE_UNLOCK_ADAPTIVE(ck_rwlock_read, &st, &rwlock); + } + e_b = rdtsc(); + printf(" (rtm-adaptive) READ: rwlock %15" PRIu64 "\n", (e_b - s_b) / STEPS); +#endif /* CK_F_PR_RTM */ + + return 0; +} + |