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/* SPDX-License-Identifier: MIT */
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/*
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* Description: Check to see if wait_nr is being honored.
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*/
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#include <stdio.h>
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#include "liburing.h"
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int main(int argc, char *argv[])
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{
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struct io_uring_sqe *sqe;
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struct io_uring_cqe *cqe;
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struct io_uring ring;
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int ret;
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struct __kernel_timespec ts = {
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.tv_sec = 0,
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.tv_nsec = 10000000
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};
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if (argc > 1)
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return 0;
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if (io_uring_queue_init(4, &ring, 0) != 0) {
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fprintf(stderr, "ring setup failed\n");
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return 1;
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}
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/*
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* First, submit the timeout sqe so we can actually finish the test
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* if everything is in working order.
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*/
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sqe = io_uring_get_sqe(&ring);
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if (!sqe) {
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fprintf(stderr, "get sqe failed\n");
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return 1;
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}
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io_uring_prep_timeout(sqe, &ts, (unsigned)-1, 0);
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ret = io_uring_submit(&ring);
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if (ret != 1) {
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fprintf(stderr, "Got submit %d, expected 1\n", ret);
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return 1;
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}
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/*
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* Next, submit a nop and wait for two events. If everything is working
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* as it should, we should be waiting for more than a millisecond and we
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* should see two cqes. Otherwise, execution continues immediately
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* and we see only one cqe.
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*/
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sqe = io_uring_get_sqe(&ring);
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if (!sqe) {
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fprintf(stderr, "get sqe failed\n");
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return 1;
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}
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io_uring_prep_nop(sqe);
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ret = io_uring_submit_and_wait(&ring, 2);
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if (ret != 1) {
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fprintf(stderr, "Got submit %d, expected 1\n", ret);
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return 1;
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}
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if (io_uring_peek_cqe(&ring, &cqe) != 0) {
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fprintf(stderr, "Unable to peek cqe!\n");
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return 1;
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}
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io_uring_cqe_seen(&ring, cqe);
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if (io_uring_peek_cqe(&ring, &cqe) != 0) {
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fprintf(stderr, "Unable to peek cqe!\n");
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return 1;
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}
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io_uring_queue_exit(&ring);
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return 0;
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}
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