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/* SPDX-License-Identifier: MIT */
/*
* Description: test SQ queue space left
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
static int test_left(void)
{
struct io_uring_sqe *sqe;
struct io_uring ring;
int ret, i = 0, s;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
if ((s = io_uring_sq_space_left(&ring)) != 8) {
fprintf(stderr, "Got %d SQEs left, expected %d\n", s, 8);
goto err;
}
i = 0;
while ((sqe = io_uring_get_sqe(&ring)) != NULL) {
i++;
if ((s = io_uring_sq_space_left(&ring)) != 8 - i) {
fprintf(stderr, "Got %d SQEs left, expected %d\n", s, 8 - i);
goto err;
}
}
if (i != 8) {
fprintf(stderr, "Got %d SQEs, expected %d\n", i, 8);
goto err;
}
io_uring_queue_exit(&ring);
return 0;
err:
io_uring_queue_exit(&ring);
return 1;
}
static int test_sync(void)
{
struct io_uring_sqe *sqe;
struct io_uring ring;
int ret, i;
ret = io_uring_queue_init(32, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
/* prep 8 NOPS */
for (i = 0; i < 8; i++) {
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
}
/* prep known bad command, this should terminate submission */
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->opcode = 0xfe;
/* prep 8 NOPS */
for (i = 0; i < 8; i++) {
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
}
/* we should have 8 + 1 + 8 pending now */
ret = io_uring_sq_ready(&ring);
if (ret != 17) {
fprintf(stderr, "%d ready, wanted 17\n", ret);
goto err;
}
ret = io_uring_submit(&ring);
/* should submit 8 successfully, then error #9 and stop */
if (ret != 9) {
fprintf(stderr, "submitted %d, wanted 9\n", ret);
goto err;
}
/* should now have 8 ready, with 9 gone */
ret = io_uring_sq_ready(&ring);
if (ret != 8) {
fprintf(stderr, "%d ready, wanted 8\n", ret);
goto err;
}
ret = io_uring_submit(&ring);
/* the last 8 should submit fine */
if (ret != 8) {
fprintf(stderr, "submitted %d, wanted 8\n", ret);
goto err;
}
ret = io_uring_sq_ready(&ring);
if (ret) {
fprintf(stderr, "%d ready, wanted 0\n", ret);
goto err;
}
io_uring_queue_exit(&ring);
return 0;
err:
io_uring_queue_exit(&ring);
return 1;
}
int main(int argc, char *argv[])
{
int ret;
if (argc > 1)
return 0;
ret = test_left();
if (ret) {
fprintf(stderr, "test_left failed\n");
return ret;
}
ret = test_sync();
if (ret) {
fprintf(stderr, "test_sync failed\n");
return ret;
}
return 0;
}
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