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| //----------------------------------------------------------- | ||
| // | ||
| // Copyright (C) 2021 by the deal.II authors | ||
| // | ||
| // This file is part of the deal.II library. | ||
| // | ||
| // The deal.II library is free software; you can use it, redistribute | ||
| // it, and/or modify it under the terms of the GNU Lesser General | ||
| // Public License as published by the Free Software Foundation; either | ||
| // version 2.1 of the License, or (at your option) any later version. | ||
| // The full text of the license can be found in the file LICENSE.md at | ||
| // the top level directory of deal.II. | ||
| // | ||
| //--------------------------------------------------------------- | ||
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| #ifndef dealii_tests_tests_h | ||
| #define dealii_tests_tests_h | ||
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| #include <deal.II/base/logstream.h> | ||
| #include <deal.II/base/mpi.h> | ||
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| #include <fstream> | ||
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| DEAL_II_NAMESPACE_OPEN | ||
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| namespace Testing | ||
| { | ||
| // given the name of a file, copy it to deallog | ||
| // and then delete it | ||
| void | ||
| cat_file(const char *filename) | ||
| { | ||
| { | ||
| std::ifstream in(filename); | ||
| Assert(in, dealii::ExcIO()); | ||
| deallog.get_file_stream() << in.rdbuf() << "\n"; | ||
| } | ||
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| std::remove(filename); | ||
| } | ||
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| // Function to initialize deallog. Normally, it should be called at | ||
| // the beginning of main() like | ||
| // | ||
| // initlog(); | ||
| // | ||
| // This will open the correct output file, divert log output there and | ||
| // switch off screen output. If screen output is desired, provide the | ||
| // optional first argument as 'true'. | ||
| std::string deallogname; | ||
| std::ofstream deallogfile; | ||
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| void | ||
| initlog(const bool console = false, | ||
| const std::ios_base::fmtflags flags = std::ios::showpoint | | ||
| std::ios::left) | ||
| { | ||
| deallogname = "output"; | ||
| deallogfile.open(deallogname); | ||
| deallog.attach(deallogfile, true, flags); | ||
| deallog.depth_console(console ? 10 : 0); | ||
| } | ||
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| inline void | ||
| mpi_initlog(const bool console = false, | ||
| const std::ios_base::fmtflags flags = std::ios::showpoint | | ||
| std::ios::left) | ||
| { | ||
| #ifdef DEAL_II_WITH_MPI | ||
| unsigned int myid = Utilities::MPI::this_mpi_process(MPI_COMM_WORLD); | ||
| if (myid == 0) | ||
| { | ||
| deallogname = "output"; | ||
| deallogfile.open(deallogname.c_str()); | ||
| deallog.attach(deallogfile, true, flags); | ||
| deallog.depth_console(console ? 10 : 0); | ||
| } | ||
| #else | ||
| (void)console; | ||
| (void)flags; | ||
| // can't use this function if not using MPI | ||
| Assert(false, ExcInternalError()); | ||
| #endif | ||
| } | ||
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| /** | ||
| * A helper class that gives each MPI process its own output file | ||
| * for the `deallog` stream, and at the end of the program (or, | ||
| * more correctly, the end of the current object), concatenates them | ||
| * all into the output file used on processor 0. | ||
| */ | ||
| struct MPILogInitAll | ||
| { | ||
| MPILogInitAll(const bool console = false, | ||
| const std::ios_base::fmtflags flags = std::ios::showpoint | | ||
| std::ios::left) | ||
| { | ||
| #ifdef DEAL_II_WITH_MPI | ||
| const unsigned int myid = | ||
| Utilities::MPI::this_mpi_process(MPI_COMM_WORLD); | ||
| #else | ||
| constexpr unsigned int myid = 0; | ||
| #endif | ||
| if (myid == 0) | ||
| { | ||
| if (!deallog.has_file()) | ||
| { | ||
| deallogfile.open("output"); | ||
| deallog.attach(deallogfile, true, flags); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| deallogname = "output" + Utilities::int_to_string(myid); | ||
| deallogfile.open(deallogname.c_str()); | ||
| deallog.attach(deallogfile, true, flags); | ||
| } | ||
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| deallog.depth_console(console ? 10 : 0); | ||
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| deallog.push(Utilities::int_to_string(myid)); | ||
| } | ||
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| ~MPILogInitAll() | ||
| { | ||
| // pop the prefix for the MPI rank of the current process | ||
| deallog.pop(); | ||
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| #ifdef DEAL_II_WITH_MPI | ||
| const unsigned int myid = | ||
| Utilities::MPI::this_mpi_process(MPI_COMM_WORLD); | ||
| const unsigned int nproc = | ||
| Utilities::MPI::n_mpi_processes(MPI_COMM_WORLD); | ||
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| if (myid != 0) | ||
| { | ||
| deallog.detach(); | ||
| deallogfile.close(); | ||
| } | ||
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| MPI_Barrier(MPI_COMM_WORLD); | ||
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| # ifdef DEAL_II_WITH_PETSC | ||
| check_petsc_allocations(); | ||
| MPI_Barrier(MPI_COMM_WORLD); | ||
| # endif | ||
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| if (myid == 0) | ||
| { | ||
| for (unsigned int i = 1; i < nproc; ++i) | ||
| { | ||
| std::string filename = "output" + Utilities::int_to_string(i); | ||
| cat_file(filename.c_str()); | ||
| } | ||
| } | ||
| MPI_Barrier(MPI_COMM_WORLD); | ||
| #endif | ||
| } | ||
| }; | ||
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| } // namespace Testing | ||
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| DEAL_II_NAMESPACE_CLOSE | ||
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| #endif |
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