39e0ebd4fc
We have io_uring_get_sqe() on the submission side, yet the completion side is named _completion. Rename as follows: io_uring_get_completion() io_uring_peek_cqe() iO_uring_wait_completion() io_uring_wait_cqe() This better tells the user what the _get variant does by calling it _peek instead, and we move to using _cqe() as the postfix instead of _completion. Signed-off-by: Jens Axboe <axboe@kernel.dk>
88 lines
1.4 KiB
C
88 lines
1.4 KiB
C
/*
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* Description: test CQ ring overflow
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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 "../src/liburing.h"
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static int queue_n_nops(struct io_uring *ring, int n)
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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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}
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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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int main(int argc, char *argv[])
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{
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struct io_uring_cqe *cqe;
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struct io_uring ring;
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int i, ret;
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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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if (queue_n_nops(&ring, 4))
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goto err;
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if (queue_n_nops(&ring, 4))
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goto err;
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if (queue_n_nops(&ring, 4))
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goto err;
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i = 0;
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do {
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ret = io_uring_peek_cqe(&ring, &cqe);
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if (ret < 0) {
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printf("wait completion %d\n", ret);
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goto err;
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}
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io_uring_cqe_seen(&ring, cqe);
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if (!cqe)
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break;
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i++;
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} while (1);
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if (i != 8 || *ring.cq.koverflow != 4) {
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printf("CQ overflow fail: %d completions, %u overflow\n", i,
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*ring.cq.koverflow);
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goto err;
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}
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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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