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/*
* Description: run various linked sqe tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "../src/liburing.h"
/*
* Test two independent chains
*/
static int test_double_chain(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->flags |= IOSQE_IO_LINK;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->flags |= IOSQE_IO_LINK;
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;
}
for (i = 0; i < 4; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
printf("wait completion %d\n", ret);
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
return 0;
err:
return 1;
}
/*
* Test multiple dependents
*/
static int test_double_link(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->flags |= IOSQE_IO_LINK;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->flags |= IOSQE_IO_LINK;
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;
}
for (i = 0; i < 3; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
printf("wait completion %d\n", ret);
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
return 0;
err:
return 1;
}
/*
* Test single dependency
*/
static int test_single_link(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->flags |= IOSQE_IO_LINK;
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;
}
for (i = 0; i < 2; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
printf("wait completion %d\n", ret);
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
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_link(&ring);
if (ret) {
printf("test_single_link failed\n");
return ret;
}
ret = test_double_link(&ring);
if (ret) {
printf("test_double_link failed\n");
return ret;
}
ret = test_double_chain(&ring);
if (ret) {
printf("test_double_chain failed\n");
return ret;
}
return 0;
}
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