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| author | John Högberg <john@erlang.org> | 2018-02-13 16:12:30 +0100 |
|---|---|---|
| committer | John Högberg <john@erlang.org> | 2018-02-15 17:00:06 +0100 |
| commit | c47c8ed7da8c222c5d3b99d0f109fe126a86c632 (patch) | |
| tree | 48689c610fdffa9fce8b5420715ca6971801e74d /erts/emulator/test/nif_SUITE.erl | |
| parent | 13497e652a9b9495fbefd52396620bfccc6d7a7c (diff) | |
| download | erlang-c47c8ed7da8c222c5d3b99d0f109fe126a86c632.tar.gz | |
Handle unaligned binaries in enif_inspect_iovec
Diffstat (limited to 'erts/emulator/test/nif_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/nif_SUITE.erl | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl index 4811244b98..ac2b136a38 100644 --- a/erts/emulator/test/nif_SUITE.erl +++ b/erts/emulator/test/nif_SUITE.erl @@ -2983,8 +2983,24 @@ nif_ioq(Config) -> {enqv, a, 5, iolist_size(nif_ioq_payload(5)) - 1}, {peek, a}, - %% Test to enqueue a bunch of refc binaries + %% Ensure that enqueued refc binaries are intact after a roundtrip. + %% + %% This test and the ones immediately following it does not go through + %% erlang:iolist_to_iovec/1 {enqv, a, [nif_ioq_payload(refcbin) || _ <- lists:seq(1,20)], 0}, + {peek, a}, + + %% ... heap binaries + {enqv, a, [nif_ioq_payload(heapbin) || _ <- lists:seq(1,20)], 0}, + {peek, a}, + + %% ... plain sub-binaries + {enqv, a, [nif_ioq_payload(subbin) || _ <- lists:seq(1,20)], 0}, + {peek, a}, + + %% ... unaligned binaries + {enqv, a, [nif_ioq_payload(unaligned_bin) || _ <- lists:seq(1,20)], 0}, + {peek, a}, %% Enq stuff to destroy with data in queue {enqv, a, 2, 100}, @@ -3120,13 +3136,16 @@ nif_ioq_payload(N) when is_integer(N) -> Tail = if N > 3 -> nif_ioq_payload(N-3); true -> [] end, Head = element(1, lists:split(N,[nif_ioq_payload(subbin), nif_ioq_payload(heapbin), - nif_ioq_payload(refcbin) | Tail])), + nif_ioq_payload(refcbin), + nif_ioq_payload(unaligned_bin) | Tail])), erlang:iolist_to_iovec(Head); nif_ioq_payload(subbin) -> Bin = nif_ioq_payload(refcbin), Sz = size(Bin) - 1, <<_:8,SubBin:Sz/binary,_/bits>> = Bin, SubBin; +nif_ioq_payload(unaligned_bin) -> + make_unaligned_binary(<< <<I>> || I <- lists:seq(1, 255) >>); nif_ioq_payload(heapbin) -> <<"a literal heap binary">>; nif_ioq_payload(refcbin) -> @@ -3134,6 +3153,13 @@ nif_ioq_payload(refcbin) -> nif_ioq_payload(Else) -> Else. +make_unaligned_binary(Bin0) -> + Size = byte_size(Bin0), + <<0:3,Bin:Size/binary,31:5>> = id(<<0:3,Bin0/binary,31:5>>), + Bin. + +id(I) -> I. + %% The NIFs: lib_version() -> undefined. call_history() -> ?nif_stub. |