cpp/liburing
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Update to newer API

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Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2019-01-09 15:26:20 -07:00
parent 66a7d05bd8
commit 7bf7e8e8e5
5 changed files with 129 additions and 115 deletions
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46
test/io_uring-test.c
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@@ -11,13 +11,16 @@
#include <unistd.h>
#include "../src/liburing.h"
#define QD 4
int main(int argc, char *argv[])
{
struct io_uring_params p;
struct io_uring ring;
int i, fd, ret, pending, done;
struct io_uring_iocb *iocb;
struct io_uring_event *ev;
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct iovec *iovecs;
off_t offset;
void *buf;
@@ -29,7 +32,7 @@ int main(int argc, char *argv[])
memset(&p, 0, sizeof(p));
p.flags = IORING_SETUP_IOPOLL;
ret = io_uring_queue_init(4, &p, NULL, &ring);
ret = io_uring_queue_init(QD, &p, NULL, &ring);
if (ret < 0) {
fprintf(stderr, "queue_init: %s\n", strerror(-ret));
return 1;
@@ -41,22 +44,28 @@ int main(int argc, char *argv[])
return 1;
}
if (posix_memalign(&buf, 4096, 4096))
return 1;
iovecs = calloc(QD, sizeof(struct iovec));
for (i = 0; i < QD; i++) {
if (posix_memalign(&buf, 4096, 4096))
return 1;
iovecs[i].iov_base = buf;
iovecs[i].iov_len = 4096;
}
offset = 0;
i = 0;
do {
iocb = io_uring_get_iocb(&ring);
if (!iocb)
sqe = io_uring_get_sqe(&ring);
if (!sqe)
break;
iocb->opcode = IORING_OP_READ;
iocb->flags = 0;
iocb->ioprio = 0;
iocb->fd = fd;
iocb->off = offset;
iocb->addr = buf;
iocb->len = 4096;
offset += 4096;
sqe->opcode = IORING_OP_READV;
sqe->flags = 0;
sqe->ioprio = 0;
sqe->fd = fd;
sqe->off = offset;
sqe->addr = &iovecs[i];
sqe->len = 1;
offset += iovecs[i].iov_len;
} while (1);
ret = io_uring_submit(&ring);
@@ -68,16 +77,15 @@ int main(int argc, char *argv[])
done = 0;
pending = ret;
for (i = 0; i < pending; i++) {
ev = NULL;
ret = io_uring_get_completion(&ring, &ev);
ret = io_uring_get_completion(&ring, &cqe);
if (ret < 0) {
fprintf(stderr, "io_uring_get_completion: %s\n", strerror(-ret));
return 1;
}
done++;
if (ev->res != 4096) {
fprintf(stderr, "ret=%d, wanted 4096\n", ev->res);
if (cqe->res != 4096) {
fprintf(stderr, "ret=%d, wanted 4096\n", cqe->res);
return 1;
}
}