Import concurrencykit as of commit 566bb28dba963a1904e0889b74fe7005a5bc5eb8

1 files changed, 142 insertions, 0 deletions

diff --git a/regressions/ck_barrier/validate/barrier_tournament.c b/regressions/ck_barrier/validate/barrier_tournament.c
new file mode 100644
index 000000000000..f51dab8d64fe
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+++ b/regressions/ck_barrier/validate/barrier_tournament.c
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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);
+}
+