82 lines
1.4 KiB
C
82 lines
1.4 KiB
C
/*
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* Test that closed pipe reads returns 0, instead of waiting for more
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* data.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <string.h>
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#include "liburing.h"
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#define BUFSIZE 512
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struct data {
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char *str;
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int fds[2];
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};
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static void *t(void *data)
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{
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struct data *d = data;
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int ret;
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strcpy(d->str, "This is a test string");
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ret = write(d->fds[1], d->str, strlen(d->str));
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close(d->fds[1]);
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if (ret < 0)
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perror("write");
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return NULL;
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}
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int main(int argc, char *argv[])
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{
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static char buf[BUFSIZE];
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struct io_uring ring;
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pthread_t thread;
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struct data d;
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int ret;
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if (pipe(d.fds) < 0) {
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perror("pipe");
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return 1;
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}
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d.str = buf;
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io_uring_queue_init(8, &ring, 0);
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pthread_create(&thread, NULL, t, &d);
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while (1) {
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struct io_uring_sqe *sqe;
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struct io_uring_cqe *cqe;
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sqe = io_uring_get_sqe(&ring);
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io_uring_prep_read(sqe, d.fds[0], buf, BUFSIZE, 0);
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ret = io_uring_submit(&ring);
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if (ret != 1) {
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fprintf(stderr, "submit: %d\n", ret);
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return 1;
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}
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ret = io_uring_wait_cqe(&ring, &cqe);
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if (ret) {
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fprintf(stderr, "wait: %d\n", ret);
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return 1;
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}
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if (cqe->res < 0) {
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fprintf(stderr, "Read error: %s\n", strerror(-cqe->res));
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return 1;
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}
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if (cqe->res == 0)
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break;
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io_uring_cqe_seen(&ring, cqe);
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}
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pthread_join(thread, NULL);
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io_uring_queue_exit(&ring);
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return 0;
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}
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