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Diffstat (limited to 'regressions/ck_spinlock/benchmark/latency.h')
| -rw-r--r-- | regressions/ck_spinlock/benchmark/latency.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/regressions/ck_spinlock/benchmark/latency.h b/regressions/ck_spinlock/benchmark/latency.h new file mode 100644 index 0000000..afadcd2 --- /dev/null +++ b/regressions/ck_spinlock/benchmark/latency.h @@ -0,0 +1,76 @@ +/* + * Copyright 2011-2015 Samy Al Bahra. + * Copyright 2011 David Joseph. + * 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_bytelock.h> +#include <ck_spinlock.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> + +#include "../../common.h" + +#ifndef STEPS +#define STEPS 30000000 +#endif + +LOCK_DEFINE; + +int +main(void) +{ + CK_CC_UNUSED unsigned int nthr = 1; + + #ifdef LOCK_INIT + LOCK_INIT; + #endif + + #ifdef LOCK_STATE + LOCK_STATE; + #endif + + uint64_t s_b, e_b, i; + CK_CC_UNUSED int core = 0; + + s_b = rdtsc(); + for (i = 0; i < STEPS; ++i) { + #ifdef LOCK + LOCK; + UNLOCK; + LOCK; + UNLOCK; + LOCK; + UNLOCK; + LOCK; + UNLOCK; + #endif + } + e_b = rdtsc(); + printf("%15" PRIu64 "\n", (e_b - s_b) / 4 / STEPS); + + return (0); +} + |