src/gromacs/mdrunutility/logging.cpp

   1 /*
   2  * This file is part of the GROMACS molecular simulation package.
   3  *
   4  * Copyright (c) 2018,2019, by the GROMACS development team, led by
   5  * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
   6  * and including many others, as listed in the AUTHORS file in the
   7  * top-level source directory and at http://www.gromacs.org.
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  35 /*! \internal \file
  36  *
  37  * \brief Implements the MD log file handling routines.
  38  *
  39  * \author Mark Abraham <mark.j.abraham@gmail.com>
  40  * \ingroup module_mdrunutility
  41  */
  42 #include "gmxpre.h"
  43
  44 #include "logging.h"
  45
  46 #include <memory>
  47
  48 #include "gromacs/fileio/gmxfio.h"
  49 #include "gromacs/utility/binaryinformation.h"
  50 #include "gromacs/utility/cstringutil.h"
  51 #include "gromacs/utility/exceptions.h"
  52 #include "gromacs/utility/fatalerror.h"
  53 #include "gromacs/utility/programcontext.h"
  54 #include "gromacs/utility/smalloc.h"
  55
  56 namespace gmx
  57 {
  58
  59 //! Implements aspects of logfile handling common to opening either for writing or appending.
  60 static void prepareLogFile(BinaryInformationSettings settings, FILE* fplog)
  61 {
  62     GMX_RELEASE_ASSERT(fplog != nullptr, "Log file must be already open");
  63     // TODO This function is writing initial content to the log
  64     // file. Preparing the error output handling should happen at some
  65     // later point, using this log file, but should not be done at the
  66     // same time as writing content. Move this call there.
  67     gmx_fatal_set_log_file(fplog);
  68
  69     try
  70     {
  71         settings.extendedInfo(true).processId(true);
  72         printBinaryInformation(fplog, getProgramContext(), settings);
  73     }
  74     GMX_CATCH_ALL_AND_EXIT_WITH_FATAL_ERROR
  75     fprintf(fplog, "\n");
  76
  77     fflush(fplog);
  78 }
  79
  80 LogFilePtr openLogFile(const char* lognm, bool appendFiles)
  81 {
  82     const char* fileOpeningMode = "w+";
  83     if (appendFiles)
  84     {
  85         fileOpeningMode = GMX_FAHCORE ? "a" : "r+";
  86     }
  87
  88     LogFilePtr logfio(gmx_fio_open(lognm, fileOpeningMode));
  89     if (!logfio)
  90     {
  91         GMX_THROW(FileIOError("Could not open log file" + std::string(lognm)));
  92     }
  93     // If appending, then there is no need to write this header
  94     // information, and we don't want to change the file until the
  95     // checksum has been computed.
  96     if (!appendFiles)
  97     {
  98         FILE*                          fplog = gmx_fio_getfp(logfio.get());
  99         gmx::BinaryInformationSettings settings;
 100         settings.copyright(true);
 101         prepareLogFile(settings, fplog);
 102     }
 103     return logfio;
 104 }
 105
 106 void prepareLogAppending(FILE* fplog)
 107 {
 108     GMX_RELEASE_ASSERT(fplog != nullptr, "Log file must be already open");
 109     fprintf(fplog,
 110             "\n"
 111             "\n"
 112             "-----------------------------------------------------------\n"
 113             "Restarting from checkpoint, appending to previous log file.\n"
 114             "\n");
 115     gmx::BinaryInformationSettings settings;
 116     settings.copyright(false);
 117     prepareLogFile(settings, fplog);
 118 }
 119
 120 void closeLogFile(t_fileio* logfio)
 121 {
 122     if (logfio)
 123     {
 124         gmx_fatal_set_log_file(nullptr);
 125         gmx_fio_close(logfio);
 126     }
 127 }
 128
 129 } // namespace gmx