Commit eb2cee8a authored by Eisenhauer, Greg's avatar Eisenhauer, Greg Committed by Bolea Sanchez, Vicente Adolfo
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Tweak POSIX fail on EOF to kill heisenbug (#4035) 

Tweak POSIX fail on EOF to kill heisenbug
parent 7e88591a

source/adios2/toolkit/transport/file/FilePOSIX.cpp

+13 −5
Original line number Diff line number Diff line 
/*

 * Distributed under the OSI-approved Apache License, Version 2.0.  See

 * accompanying file Copyright.txt for details.

 *

 * FilePOSIX.cpp file I/O using POSIX I/O library

 *
@@ -437,9 +435,19 @@ void FilePOSIX::Read(char *buffer, size_t size, size_t start) 
            {

                if (m_FailOnEOF)

                {

                    // we got an EOF on data that *should* be present,

                    // but maybe we've got filesystem consistency

                    // issues.  We'll wait, but if the backoff time

                    // reaches 30 seconds (nearly 45 seconds total

                    // wait time) and we still don't have data, treat

                    // this as a real failure and throw an exception.

                    std::this_thread::sleep_for(std::chrono::nanoseconds(backoff_ns));

                    backoff_ns *= 2;

                    if (std::chrono::nanoseconds(backoff_ns) > std::chrono::seconds(30))

                        helper::Throw<std::ios_base::failure>(

                            "Toolkit", "transport::file::FilePOSIX", "Read",

                        "Read past end of file on " + m_Name + " " + SysErrMsg());

                            "Read past end of file on " + m_Name + " trying to read " +

                                std::to_string(size) + " bytes " + SysErrMsg());

                }

                else

                {