1 files changed, 168 insertions, 0 deletions
diff --git a/regressions/ck_fifo/validate/ck_fifo_mpmc.c b/regressions/ck_fifo/validate/ck_fifo_mpmc.c
new file mode 100644
index 0000000..89eb2f4
--- /dev/null
+++ b/regressions/ck_fifo/validate/ck_fifo_mpmc.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2011-2015 Samy Al Bahra.
+ * 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 <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <pthread.h>
+#include <ck_fifo.h>
+
+#include "../../common.h"
+
+#ifdef CK_F_FIFO_MPMC
+#ifndef ITERATIONS
+#define ITERATIONS 128
+#endif
+
+struct context {
+	unsigned int tid;
+	unsigned int previous;
+	unsigned int next;
+};
+
+struct entry {
+	int tid;
+	int value;
+};
+
+static int nthr;
+
+#ifdef CK_F_FIFO_MPMC
+static ck_fifo_mpmc_t fifo CK_CC_CACHELINE;
+#endif
+
+static struct affinity a;
+static int size;
+static unsigned int barrier;
+
+static void *
+test(void *c)
+{
+#ifdef CK_F_FIFO_MPMC
+	struct context *context = c;
+	struct entry *entry;
+	ck_fifo_mpmc_entry_t *fifo_entry, *garbage;
+	int i, j;
+
+        if (aff_iterate(&a)) {
+                perror("ERROR: Could not affine thread");
+                exit(EXIT_FAILURE);
+        }
+
+	ck_pr_inc_uint(&barrier);
+	while (ck_pr_load_uint(&barrier) < (unsigned int)nthr);
+
+	for (i = 0; i < ITERATIONS; i++) {
+		for (j = 0; j < size; j++) {
+			fifo_entry = malloc(sizeof(ck_fifo_mpmc_entry_t));
+			entry = malloc(sizeof(struct entry));
+			entry->tid = context->tid;
+			ck_fifo_mpmc_enqueue(&fifo, fifo_entry, entry);
+			if (ck_fifo_mpmc_dequeue(&fifo, &entry, &garbage) == false) {
+				ck_error("ERROR [%u] Queue should never be empty.\n", context->tid);
+			}
+
+			if (entry->tid < 0 || entry->tid >= nthr) {
+				ck_error("ERROR [%u] Incorrect value in entry.\n", entry->tid);
+			}
+		}
+	}
+
+	for (i = 0; i < ITERATIONS; i++) {
+		for (j = 0; j < size; j++) {
+			fifo_entry = malloc(sizeof(ck_fifo_mpmc_entry_t));
+			entry = malloc(sizeof(struct entry));
+			entry->tid = context->tid;
+			while (ck_fifo_mpmc_tryenqueue(&fifo, fifo_entry, entry) == false)
+				ck_pr_stall();
+
+			while (ck_fifo_mpmc_trydequeue(&fifo, &entry, &garbage) == false)
+				ck_pr_stall();
+
+			if (entry->tid < 0 || entry->tid >= nthr) {
+				ck_error("ERROR [%u] Incorrect value in entry when using try interface.\n", entry->tid);
+			}
+		}
+	}
+#endif
+
+	return (NULL);
+}
+
+int
+main(int argc, char *argv[])
+{
+	int i, r;
+	struct context *context;
+	ck_fifo_mpmc_entry_t *garbage;
+	pthread_t *thread;
+
+	if (argc != 4) {
+		ck_error("Usage: validate <threads> <affinity delta> <size>\n");
+	}
+
+	a.request = 0;
+	a.delta = atoi(argv[2]);
+
+	nthr = atoi(argv[1]);
+	assert(nthr >= 1);
+
+	size = atoi(argv[3]);
+	assert(size > 0);
+
+	context = malloc(sizeof(*context) * nthr);
+	assert(context);
+
+	thread = malloc(sizeof(pthread_t) * nthr);
+	assert(thread);
+
+	ck_fifo_mpmc_init(&fifo, malloc(sizeof(ck_fifo_mpmc_entry_t)));
+	ck_fifo_mpmc_deinit(&fifo, &garbage);
+	if (garbage == NULL)
+		ck_error("ERROR: Expected non-NULL stub node on deinit.\n");
+	free(garbage);
+	ck_fifo_mpmc_init(&fifo, malloc(sizeof(ck_fifo_mpmc_entry_t)));
+
+	for (i = 0; i < nthr; i++) {
+		context[i].tid = i;
+		r = pthread_create(thread + i, NULL, test, context + i);
+		assert(r == 0);
+	}
+
+	for (i = 0; i < nthr; i++)
+		pthread_join(thread[i], NULL);
+
+	return (0);
+}
+#else
+int
+main(void)
+{
+	fprintf(stderr, "Unsupported.\n");
+	return 0;
+}
+#endif
+