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/*
* Description: Single depth submit+wait poll hang test
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
#define BLOCKS 4096
int main(int argc, char *argv[])
{
struct io_uring ring;
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct iovec iov;
char buf[32];
off_t offset;
unsigned blocks;
int ret, fd;
if (posix_memalign(&iov.iov_base, 4096, 4096)) {
fprintf(stderr, "memalign failed\n");
return 1;
}
iov.iov_len = 4096;
ret = io_uring_queue_init(1, &ring, IORING_SETUP_IOPOLL);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
sprintf(buf, "./XXXXXX");
mktemp(buf);
fd = open(buf, O_WRONLY | O_DIRECT | O_CREAT, 0644);
if (fd < 0) {
perror("mkstemp");
return 1;
}
offset = 0;
blocks = BLOCKS;
do {
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_writev(sqe, fd, &iov, 1, offset);
ret = io_uring_submit_and_wait(&ring, 1);
if (ret < 0) {
fprintf(stderr, "submit_and_wait: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(&ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion: %d\n", ret);
goto err;
}
if (cqe->res != 4096) {
if (cqe->res == -EOPNOTSUPP)
goto skipped;
goto err;
}
io_uring_cqe_seen(&ring, cqe);
offset += 4096;
} while (--blocks);
close(fd);
unlink(buf);
return 0;
err:
close(fd);
unlink(buf);
return 1;
skipped:
fprintf(stderr, "Polling not supported in current dir, test skipped\n");
close(fd);
unlink(buf);
return 0;
}
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