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/*
* 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 <errno.h>
#include <inttypes.h>
#include <pthread.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <unistd.h>
#include <sys/time.h>
#include <ck_pr.h>
#include <ck_barrier.h>
#include "../../common.h"
#ifndef ITERATE
#define ITERATE 5000000
#endif
#ifndef ENTRIES
#define ENTRIES 512
#endif
static struct affinity a;
static int nthr;
static int counters[ENTRIES];
static int barrier_wait;
static ck_barrier_tournament_t barrier;
static void *
thread(CK_CC_UNUSED void *unused)
{
ck_barrier_tournament_state_t state;
int j, counter;
int i = 0;
aff_iterate(&a);
ck_barrier_tournament_subscribe(&barrier, &state);
ck_pr_inc_int(&barrier_wait);
while (ck_pr_load_int(&barrier_wait) != nthr)
ck_pr_stall();
for (j = 0; j < ITERATE; j++) {
i = j++ & (ENTRIES - 1);
ck_pr_inc_int(&counters[i]);
ck_barrier_tournament(&barrier, &state);
counter = ck_pr_load_int(&counters[i]);
if (counter != nthr * (j / ENTRIES + 1)) {
ck_error("FAILED [%d:%d]: %d != %d\n", i, j - 1, counter, nthr);
}
}
ck_pr_inc_int(&barrier_wait);
while (ck_pr_load_int(&barrier_wait) != nthr * 2)
ck_pr_stall();
return (NULL);
}
int
main(int argc, char *argv[])
{
pthread_t *threads;
ck_barrier_tournament_round_t **rounds;
int i;
unsigned int size;
if (argc < 3) {
ck_error("Usage: correct <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");
}
a.delta = atoi(argv[2]);
threads = malloc(sizeof(pthread_t) * nthr);
if (threads == NULL) {
ck_error("ERROR: Could not allocate thread structures\n");
}
rounds = malloc(sizeof(ck_barrier_tournament_round_t *) * nthr);
if (rounds == NULL) {
ck_error("ERROR: Could not allocate barrier structures\n");
}
size = ck_barrier_tournament_size(nthr);
for (i = 0; i < nthr; ++i) {
rounds[i] = malloc(sizeof(ck_barrier_tournament_round_t) * size);
if (rounds[i] == NULL) {
ck_error("ERROR: Could not allocate barrier structures\n");
}
}
ck_barrier_tournament_init(&barrier, rounds, nthr);
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");
fprintf(stderr, "Waiting for threads to finish correctness regression...");
for (i = 0; i < nthr; i++)
pthread_join(threads[i], NULL);
fprintf(stderr, "done (passed)\n");
return (0);
}
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