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/* SPDX-License-Identifier: MIT */
/*
* Description: test CQ peek-batch
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
#include "helpers.h"
static int queue_n_nops(struct io_uring *ring, int n, int offset)
{
struct io_uring_sqe *sqe;
int i, ret;
for (i = 0; i < n; i++) {
sqe = io_uring_get_sqe(ring);
if (!sqe) {
printf("get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->user_data = i + offset;
}
ret = io_uring_submit(ring);
if (ret < n) {
printf("Submitted only %d\n", ret);
goto err;
} else if (ret < 0) {
printf("sqe submit failed: %d\n", ret);
goto err;
}
return 0;
err:
return 1;
}
#define CHECK_BATCH(ring, got, cqes, count, expected) do {\
got = io_uring_peek_batch_cqe((ring), cqes, count);\
if (got != expected) {\
printf("Got %d CQs, expected %d\n", got, expected);\
goto err;\
}\
} while(0)
int main(int argc, char *argv[])
{
struct io_uring_cqe *cqes[8];
struct io_uring ring;
int ret, i;
unsigned got;
if (argc > 1)
return T_EXIT_SKIP;
ret = io_uring_queue_init(4, &ring, 0);
if (ret) {
printf("ring setup failed\n");
return T_EXIT_FAIL;
}
CHECK_BATCH(&ring, got, cqes, 4, 0);
if (queue_n_nops(&ring, 4, 0))
goto err;
CHECK_BATCH(&ring, got, cqes, 4, 4);
for (i=0;i<4;i++) {
if (i != cqes[i]->user_data) {
printf("Got user_data %" PRIu64 ", expected %d\n",
(uint64_t) cqes[i]->user_data, i);
goto err;
}
}
if (queue_n_nops(&ring, 4, 4))
goto err;
io_uring_cq_advance(&ring, 4);
CHECK_BATCH(&ring, got, cqes, 4, 4);
for (i=0;i<4;i++) {
if (i + 4 != cqes[i]->user_data) {
printf("Got user_data %" PRIu64 ", expected %d\n",
(uint64_t) cqes[i]->user_data, i + 4);
goto err;
}
}
io_uring_cq_advance(&ring, 8);
io_uring_queue_exit(&ring);
return T_EXIT_PASS;
err:
io_uring_queue_exit(&ring);
return T_EXIT_FAIL;
}
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