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