90 lines
1.6 KiB
C
90 lines
1.6 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Description: Single depth submit+wait poll hang test
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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 "helpers.h"
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#include "liburing.h"
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#define BLOCKS 4096
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int main(int argc, char *argv[])
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{
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struct io_uring ring;
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struct io_uring_sqe *sqe;
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struct io_uring_cqe *cqe;
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struct iovec iov;
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char buf[32];
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off_t offset;
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unsigned blocks;
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int ret, fd;
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if (argc > 1)
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return 0;
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t_posix_memalign(&iov.iov_base, 4096, 4096);
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iov.iov_len = 4096;
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ret = io_uring_queue_init(1, &ring, IORING_SETUP_IOPOLL);
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if (ret) {
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fprintf(stderr, "ring setup failed\n");
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return 1;
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}
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sprintf(buf, "./XXXXXX");
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fd = mkostemp(buf, O_WRONLY | O_DIRECT | O_CREAT);
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if (fd < 0) {
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perror("mkostemp");
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return 1;
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}
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offset = 0;
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blocks = BLOCKS;
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do {
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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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goto err;
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}
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io_uring_prep_writev(sqe, fd, &iov, 1, offset);
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ret = io_uring_submit_and_wait(&ring, 1);
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if (ret < 0) {
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fprintf(stderr, "submit_and_wait: %d\n", ret);
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goto err;
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}
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ret = io_uring_wait_cqe(&ring, &cqe);
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if (ret < 0) {
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fprintf(stderr, "wait completion: %d\n", ret);
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goto err;
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}
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if (cqe->res != 4096) {
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if (cqe->res == -EOPNOTSUPP)
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goto skipped;
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goto err;
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}
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io_uring_cqe_seen(&ring, cqe);
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offset += 4096;
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} while (--blocks);
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close(fd);
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unlink(buf);
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return 0;
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err:
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close(fd);
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unlink(buf);
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return 1;
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skipped:
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fprintf(stderr, "Polling not supported in current dir, test skipped\n");
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close(fd);
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unlink(buf);
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return 0;
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}
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