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kawaii-ghost/iouring-hello.c

Last active September 30, 2023 06:04
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iouring-hello.c
#include <liburing.h>
#include <stdio.h>
#include <unistd.h>
#include <wchar.h>
int main(void)
{
struct io_uring ring;
io_uring_queue_init(1, &ring, 0);
struct io_uring_sqe *sqe = io_uring_get_sqe(&ring);
const wchar_t wstr[] = L"Hello, world!\n"
io_uring_prep_write(sqe, STDOUT_FILENO, wstr, sizeof(wstr) - sizeof(wstr[0]), 0);
io_uring_submit(&ring);
struct io_uring_cqe *cqe;
int ret = io_uring_wait_cqe(&ring, &cqe);
if (ret < 0) {
perror("io_uring_wait_cqe");
return 1;
}
if (cqe->res < 0) {
fprintf(stderr, "Sync write failed.\n");
return 1;
}
io_uring_cqe_seen(&ring, cqe);
io_uring_queue_exit(&ring);
}
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