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-rw-r--r--src/liburing.h6
-rw-r--r--test/Makefile7
-rw-r--r--test/nop.c110
3 files changed, 121 insertions, 2 deletions
diff --git a/src/liburing.h b/src/liburing.h
index cd098ce..a544fa5 100644
--- a/src/liburing.h
+++ b/src/liburing.h
@@ -145,4 +145,10 @@ static inline void io_uring_prep_fsync(struct io_uring_sqe *sqe, int fd,
sqe->fsync_flags = fsync_flags;
}
+static inline void io_uring_prep_nop(struct io_uring_sqe *sqe)
+{
+ memset(sqe, 0, sizeof(*sqe));
+ sqe->opcode = IORING_OP_NOP;
+}
+
#endif
diff --git a/test/Makefile b/test/Makefile
index e1af59a..faf5fa6 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,12 +1,12 @@
CFLAGS ?= -g -O2 -Wall -D_GNU_SOURCE -L../src/
all_targets += io_uring-test io_uring-cp poll poll-cancel ring-leak fsync \
- io_uring_setup io_uring_register io_uring_enter
+ io_uring_setup io_uring_register io_uring_enter nop
all: $(all_targets)
test_srcs := io_uring-test.c io_uring-cp.c poll.c poll-cancel.c ring-leak.c \
- fsync.c io_uring_setup.c io_uring_register.c io_uring_enter.c
+ fsync.c io_uring_setup.c io_uring_register.c io_uring_enter.c nop.c
test_objs := $(patsubst %.c,%.ol,$(test_srcs))
@@ -28,5 +28,8 @@ io_uring_register: io_uring_register.c
$(CC) $(CFLAGS) -o $@ io_uring_register.c -luring
io_uring_enter: io_uring_enter.c
$(CC) $(CFLAGS) -o $@ io_uring_enter.c -luring
+nop: nop.c
+ $(CC) $(CFLAGS) -o $@ nop.c -luring
+
clean:
rm -f $(all_targets) $(test_objs)
diff --git a/test/nop.c b/test/nop.c
new file mode 100644
index 0000000..a37246b
--- /dev/null
+++ b/test/nop.c
@@ -0,0 +1,110 @@
+/*
+ * Description: run various nop tests
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "../src/liburing.h"
+
+static int test_single_nop(struct io_uring *ring)
+{
+ struct io_uring_cqe *cqe;
+ struct io_uring_sqe *sqe;
+ int ret;
+
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ printf("get sqe failed\n");
+ goto err;
+ }
+
+ io_uring_prep_nop(sqe);
+
+ ret = io_uring_submit(ring);
+ if (ret <= 0) {
+ printf("sqe submit failed: %d\n", ret);
+ goto err;
+ }
+
+ ret = io_uring_wait_completion(ring, &cqe);
+ if (ret < 0) {
+ printf("wait completion %d\n", ret);
+ goto err;
+ }
+
+ return 0;
+err:
+ return 1;
+}
+
+static int test_barrier_nop(struct io_uring *ring)
+{
+ struct io_uring_cqe *cqe;
+ struct io_uring_sqe *sqe;
+ int ret, i;
+
+ for (i = 0; i < 8; i++) {
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ printf("get sqe failed\n");
+ goto err;
+ }
+
+ io_uring_prep_nop(sqe);
+ if (i == 4)
+ sqe->flags = IOSQE_IO_DRAIN;
+ }
+
+ ret = io_uring_submit(ring);
+ if (ret < 8) {
+ printf("Submitted only %d\n", ret);
+ goto err;
+ } else if (ret < 0) {
+ printf("sqe submit failed: %d\n", ret);
+ goto err;
+ }
+
+ for (i = 0; i < 8; i++) {
+ ret = io_uring_wait_completion(ring, &cqe);
+ if (ret < 0) {
+ printf("wait completion %d\n", ret);
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ return 1;
+}
+
+int main(int argc, char *argv[])
+{
+ struct io_uring ring;
+ int ret;
+
+ ret = io_uring_queue_init(8, &ring, 0);
+ if (ret) {
+ printf("ring setup failed\n");
+ return 1;
+
+ }
+
+ ret = test_single_nop(&ring);
+ if (ret) {
+ printf("test_single_nop failed\n");
+ return ret;
+ }
+
+ ret = test_barrier_nop(&ring);
+ if (ret) {
+ printf("test_barrier_nop failed\n");
+ return ret;
+ }
+
+ return 0;
+}