Commit 89660575 authored by Caitlin Ross's avatar Caitlin Ross
Browse files

allow an inline writer to be created and used without an inline reader

parent d244fdd0

source/adios2/engine/inline/InlineWriter.cpp

+11 −4
Original line number Diff line number Diff line
@@ -41,12 +41,19 @@ InlineWriter::InlineWriter(IO &io, const std::string &name, const Mode mode, 
const InlineReader *InlineWriter::GetReader() const

{

    const auto &engine_map = m_IO.GetEngines();

    if (engine_map.size() != 2)

    if (engine_map.size() == 1)

    {

        // it should be fine for a writer to be created and start running,

        // without the reader having been created. This is necessary to run

        // correctly with ParaView Catalyst Live.

        return nullptr;

    }

    else if (engine_map.size() > 2)

    {

        helper::Throw<std::runtime_error>(

            "Engine", "InlineWriter", "GetReader",

            "There must be exactly one reader and one "

            "writer for the inline engine.");

            "There must be only one inline writer and at most "

            "one inline reader.");

    }



    std::shared_ptr<Engine> e = engine_map.begin()->second;
@@ -77,7 +84,7 @@ StepStatus InlineWriter::BeginStep(StepMode mode, const float timeoutSeconds) 
    }



    auto reader = GetReader();

    if (reader->IsInsideStep())

    if (reader && reader->IsInsideStep())

    {

        m_InsideStep = false;

        return StepStatus::NotReady;