| /* |
| * 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 |
| |