[PATCH liburing 2/6] tests: add t_submit_and_wait_single helper

[Pavel Begunkov <asml.silence@gmail.com>]

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 test/helpers.c | 17 +++++++++++++++++
 test/helpers.h |  2 ++
 2 files changed, 19 insertions(+)

diff --git a/test/helpers.c b/test/helpers.c
index 05895486..18af2be8 100644
--- a/test/helpers.c
+++ b/test/helpers.c
@@ -509,3 +509,20 @@ void t_clear_nonblock(int fd)
 {
 	__t_toggle_nonblock(fd, 0);
 }
+
+int t_submit_and_wait_single(struct io_uring *ring, struct io_uring_cqe **cqe)
+{
+	int ret;
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		return -1;
+	}
+	ret = io_uring_wait_cqe(ring, cqe);
+	if (ret < 0) {
+		fprintf(stderr, "wait completion %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
diff --git a/test/helpers.h b/test/helpers.h
index 3f0c11ab..b7465890 100644
--- a/test/helpers.h
+++ b/test/helpers.h
@@ -122,6 +122,8 @@ unsigned long long mtime_since_now(struct timeval *tv);
 unsigned long long utime_since(const struct timeval *s, const struct timeval *e);
 unsigned long long utime_since_now(struct timeval *tv);
 
+int t_submit_and_wait_single(struct io_uring *ring, struct io_uring_cqe **cqe);
+
 #ifdef __cplusplus
 }
 #endif
-- 
2.49.0