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Diffstat (limited to 'regressions/ck_barrier/benchmark/throughput.c')
| -rw-r--r-- | regressions/ck_barrier/benchmark/throughput.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/regressions/ck_barrier/benchmark/throughput.c b/regressions/ck_barrier/benchmark/throughput.c new file mode 100644 index 0000000..1a1c013 --- /dev/null +++ b/regressions/ck_barrier/benchmark/throughput.c @@ -0,0 +1,136 @@ +/* + * 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 <pthread.h> +#include <unistd.h> +#include <ck_stdint.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> + +#include <ck_pr.h> +#include <ck_barrier.h> + +#include "../../common.h" + +#if defined(CK_F_PR_INC_64) && defined(CK_F_PR_LOAD_64) +static int done = 0; +static struct affinity a; +static int nthr; +static int tid; +static ck_barrier_centralized_t barrier = CK_BARRIER_CENTRALIZED_INITIALIZER; +struct counter { + uint64_t value; +} CK_CC_CACHELINE; +struct counter *counters; + +static void * +thread(void *null CK_CC_UNUSED) +{ + ck_barrier_centralized_state_t state = CK_BARRIER_CENTRALIZED_STATE_INITIALIZER; + int id; + + id = ck_pr_faa_int(&tid, 1); + aff_iterate(&a); + + while (ck_pr_load_int(&done) == 0) { + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + ck_barrier_centralized(&barrier, &state, nthr); + ck_pr_inc_64(&counters[id].value); + } + + return (NULL); +} + +int +main(int argc, char *argv[]) +{ + pthread_t *threads; + uint64_t count; + int i; + + if (argc != 3) { + ck_error("Correct usage: <number of threads> <affinity delta>\n"); + } + + nthr = atoi(argv[1]); + if (nthr <= 0) { + ck_error("ERROR: Number of threads must be greater than 0\n"); + } + + threads = malloc(sizeof(pthread_t) * nthr); + if (threads == NULL) { + ck_error("ERROR: Could not allocate thread structures\n"); + } + + counters = calloc(sizeof(struct counter), nthr); + if (counters == NULL) { + ck_error("ERROR: Could not allocate counters\n"); + } + + a.delta = atoi(argv[2]); + + fprintf(stderr, "Creating threads (barrier)..."); + for (i = 0; i < nthr; ++i) { + if (pthread_create(&threads[i], NULL, thread, NULL)) { + ck_error("ERROR: Could not create thread %d\n", i); + } + } + fprintf(stderr, "done\n"); + + common_sleep(10); + + count = 0; + ck_pr_store_int(&done, 1); + for (i = 0; i < nthr; ++i) + count += ck_pr_load_64(&counters[i].value); + printf("%d %16" PRIu64 "\n", nthr, count); + + return (0); +} +#else +int +main(void) +{ + + fputs("Unsupported.", stderr); + return 0; +} +#endif + |