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io_uring: don't assume completions order (2) #20291

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Jun 20, 2024
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io_uring: don't assume completions order (2) #20291

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14 changes: 7 additions & 7 deletions lib/std/os/linux/IoUring.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -3524,12 +3524,7 @@ test "accept/connect/send_zc/recv" {
_ = try ring.recv(0xffffffff, socket_test_harness.server, .{ .buffer = buffer_recv[0..] }, 0);
try testing.expectEqual(@as(u32, 2), try ring.submit());

var cqe_send, const cqe_recv = brk: {
const cqe1 = try ring.copy_cqe();
const cqe2 = try ring.copy_cqe();
break :brk if (cqe1.user_data == 0xeeeeeeee) .{ cqe1, cqe2 } else .{ cqe2, cqe1 };
};

var cqe_send = try ring.copy_cqe();
// First completion of zero-copy send.
// IORING_CQE_F_MORE, means that there
// will be a second completion event / notification for the
Expand All @@ -3541,6 +3536,12 @@ test "accept/connect/send_zc/recv" {
.flags = linux.IORING_CQE_F_MORE,
}, cqe_send);

cqe_send, const cqe_recv = brk: {
const cqe1 = try ring.copy_cqe();
const cqe2 = try ring.copy_cqe();
break :brk if (cqe1.user_data == 0xeeeeeeee) .{ cqe1, cqe2 } else .{ cqe2, cqe1 };
};

try testing.expectEqual(linux.io_uring_cqe{
.user_data = 0xffffffff,
.res = buffer_recv.len,
Expand All @@ -3550,7 +3551,6 @@ test "accept/connect/send_zc/recv" {

// Second completion of zero-copy send.
// IORING_CQE_F_NOTIF in flags signals that kernel is done with send_buffer
cqe_send = try ring.copy_cqe();
try testing.expectEqual(linux.io_uring_cqe{
.user_data = 0xeeeeeeee,
.res = 0,
Expand Down