diff options
Diffstat (limited to 'regressions/ck_rwcohort/benchmark/latency.h')
| -rw-r--r-- | regressions/ck_rwcohort/benchmark/latency.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/regressions/ck_rwcohort/benchmark/latency.h b/regressions/ck_rwcohort/benchmark/latency.h new file mode 100644 index 0000000..027a8b2 --- /dev/null +++ b/regressions/ck_rwcohort/benchmark/latency.h @@ -0,0 +1,106 @@ +/* + * 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); +} + |