X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mpmc-queue%2Fmpmc-2r1w.cc;fp=mpmc-queue%2Fmpmc-2r1w.cc;h=8fc46522c894e2908d6ae88279a0e0ece6109755;hb=41d403a758afbfbe951e96ebb9461eb4b245363d;hp=0000000000000000000000000000000000000000;hpb=a5efb65980dd2d82ed59a3b66d34a524e373a64d;p=model-checker-benchmarks.git

diff --git a/mpmc-queue/mpmc-2r1w.cc b/mpmc-queue/mpmc-2r1w.cc
new file mode 100644
index 0000000..8fc4652
--- /dev/null
+++ b/mpmc-queue/mpmc-2r1w.cc
@@ -0,0 +1,101 @@
+#include <inttypes.h>
+#include <threads.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <librace.h>
+
+#include "mpmc-queue.h"
+
+void threadA(struct mpmc_boundq_1_alt<int32_t, sizeof(int32_t)> *queue)
+{
+	int32_t *bin = queue->write_prepare();
+	store_32(bin, 1);
+	queue->write_publish();
+}
+
+void threadB(struct mpmc_boundq_1_alt<int32_t, sizeof(int32_t)> *queue)
+{
+	int32_t *bin;
+	while (bin = queue->read_fetch()) {
+		printf("Read: %d\n", load_32(bin));
+		queue->read_consume();
+	}
+}
+
+#define MAXREADERS 3
+#define MAXWRITERS 3
+
+int readers = 2, writers = 1;
+
+void print_usage()
+{
+	printf("Error: use the following options\n"
+		" -r <num>              Choose number of reader threads\n"
+		" -w <num>              Choose number of writer threads\n");
+	exit(EXIT_FAILURE);
+}
+
+void process_params(int argc, char **argv)
+{
+	const char *shortopts = "hr:w:";
+	int opt;
+	bool error = false;
+
+	while (!error && (opt = getopt(argc, argv, shortopts)) != -1) {
+		switch (opt) {
+		case 'h':
+			print_usage();
+			break;
+		case 'r':
+			readers = atoi(optarg);
+			break;
+		case 'w':
+			writers = atoi(optarg);
+			break;
+		default: /* '?' */
+			error = true;
+			break;
+		}
+	}
+
+	if (writers < 1 || writers > MAXWRITERS)
+		error = true;
+	if (readers < 1 || readers > MAXREADERS)
+		error = true;
+
+	if (error)
+		print_usage();
+}
+
+int user_main(int argc, char **argv)
+{
+	struct mpmc_boundq_1_alt<int32_t, sizeof(int32_t)> queue;
+	thrd_t A[MAXWRITERS], B[MAXREADERS];
+
+	/* Note: optarg() / optind is broken in model-checker - workaround is
+	 * to just copy&paste this test a few times */
+	//process_params(argc, argv);
+	printf("%d reader(s), %d writer(s)\n", readers, writers);
+
+	int32_t *bin = queue.write_prepare();
+	store_32(bin, 17);
+	queue.write_publish();
+
+	printf("Start threads\n");
+
+	for (int i = 0; i < writers; i++)
+		thrd_create(&A[i], (thrd_start_t)&threadA, &queue);
+	for (int i = 0; i < readers; i++)
+		thrd_create(&B[i], (thrd_start_t)&threadB, &queue);
+
+	for (int i = 0; i < writers; i++)
+		thrd_join(A[i]);
+	for (int i = 0; i < readers; i++)
+		thrd_join(B[i]);
+
+	printf("Threads complete\n");
+
+	return 0;
+}