cpp/liburing
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Add sqe prep helpers

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Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2019-01-17 18:12:22 -07:00
parent 980cc0f025
commit 5789a6351a
5 changed files with 67 additions and 49 deletions
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22
test/poll-cancel.c
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@@ -18,7 +18,7 @@ int main(int argc, char *argv[])
int pipe1[2];
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
unsigned long addr;
void *addr;
int ret;
if (pipe(pipe1) != 0) {
@@ -37,11 +37,10 @@ int main(int argc, char *argv[])
printf("child: get sqe failed\n");
return 1;
}
memset(sqe, 0, sizeof(*sqe));
sqe->opcode = IORING_OP_POLL;
sqe->fd = pipe1[0];
sqe->poll_events = POLLIN;
sqe->user_data = addr = (unsigned long) &sqe;
io_uring_prep_poll(sqe, pipe1[0], POLLIN);
io_uring_sqe_set_data(sqe, sqe);
addr = sqe;
ret = io_uring_submit(&ring);
if (ret <= 0) {
@@ -54,10 +53,9 @@ int main(int argc, char *argv[])
printf("child: get sqe failed\n");
return 1;
}
memset(sqe, 0, sizeof(*sqe));
sqe->opcode = IORING_OP_POLL_CANCEL;
sqe->addr = addr;
sqe->user_data = (unsigned long) &sqe;
io_uring_prep_poll_cancel(sqe, addr);
io_uring_sqe_set_data(sqe, sqe);
ret = io_uring_submit(&ring);
if (ret <= 0) {
@@ -71,7 +69,7 @@ int main(int argc, char *argv[])
return 1;
}
if (cqe->user_data != addr) {
if (cqe->user_data != (unsigned long) addr) {
printf("first complete not poll\n");
return 1;
}
@@ -81,7 +79,7 @@ int main(int argc, char *argv[])
printf("parent: get failed\n");
return 1;
}
if (cqe->user_data != (unsigned long) &sqe) {
if (cqe->user_data != (unsigned long) sqe) {
printf("second not cancel\n");
return 1;
}