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-rw-r--r--test/eventfd-reg.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/test/eventfd-reg.c b/test/eventfd-reg.c
new file mode 100644
index 0000000..c708a51
--- /dev/null
+++ b/test/eventfd-reg.c
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: test eventfd registration+unregistration
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/poll.h>
+#include <sys/eventfd.h>
+
+#include "liburing.h"
+
+int main(int argc, char *argv[])
+{
+ struct io_uring_params p = {};
+ struct io_uring ring;
+ int ret, evfd[2], i;
+
+ if (argc > 1)
+ return 0;
+
+ ret = io_uring_queue_init_params(8, &ring, &p);
+ if (ret) {
+ fprintf(stderr, "ring setup failed: %d\n", ret);
+ return 1;
+ }
+
+ evfd[0] = eventfd(0, EFD_CLOEXEC);
+ evfd[1] = eventfd(0, EFD_CLOEXEC);
+ if (evfd[0] < 0 || evfd[1] < 0) {
+ perror("eventfd");
+ return 1;
+ }
+
+ ret = io_uring_register_eventfd(&ring, evfd[0]);
+ if (ret) {
+ fprintf(stderr, "failed to register evfd: %d\n", ret);
+ return 1;
+ }
+
+ /* Check that registrering again will get -EBUSY */
+ ret = io_uring_register_eventfd(&ring, evfd[1]);
+ if (ret != -EBUSY) {
+ fprintf(stderr, "unexpected 2nd register: %d\n", ret);
+ return 1;
+ }
+ close(evfd[1]);
+
+ ret = io_uring_unregister_eventfd(&ring);
+ if (ret) {
+ fprintf(stderr, "unexpected unregister: %d\n", ret);
+ return 1;
+ }
+
+ /* loop 100 registers/unregister */
+ for (i = 0; i < 100; i++) {
+ ret = io_uring_register_eventfd(&ring, evfd[0]);
+ if (ret) {
+ fprintf(stderr, "failed to register evfd: %d\n", ret);
+ return 1;
+ }
+
+ ret = io_uring_unregister_eventfd(&ring);
+ if (ret) {
+ fprintf(stderr, "unexpected unregister: %d\n", ret);
+ return 1;
+ }
+ }
+
+ close(evfd[0]);
+ return 0;
+}