working on mxx::future and mxx::comm

.gitignore

@@ -0,0 +1,2 @@
+.ycm_extra_conf.pyc
+build

.ycm_extra_conf.py

@@ -0,0 +1,221 @@
+# This file is NOT licensed under the GPLv3, which is the license for the rest
+# of YouCompleteMe.
+#
+# Here's the license text for this file:
+#
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+# For more information, please refer to <http:https://unlicense.org/>
+
+import os
+import ycm_core
+
+# These are the compilation flags that will be used in case there's no
+# compilation database set (by default, one is not set).
+# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
+flags = [
+'-Wall',
+'-Wextra',
+'-Werror',
+#'-Wc++98-compat',
+'-Wno-long-long',
+'-Wno-variadic-macros',
+'-fexceptions',
+#'-DNDEBUG',
+# THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
+# language to use when compiling headers. So it will guess. Badly. So C++
+# headers will be compiled as C headers. You don't want that so ALWAYS specify
+# a "-std=<something>".
+# For a C project, you would set this to something like 'c99' instead of
+# 'c++11'.
+'-std=c++11',
+# ...and the same thing goes for the magic -x option which specifies the
+# language that the files to be compiled are written in. This is mostly
+# relevant for c++ headers.
+# For a C project, you would set this to 'c' instead of 'c++'.
+'-x',
+'c++',
+# includes some local folders (only useful if this file is
+# actually in the folder of the project)
+#'-I',
+#'.',
+#'-I',
+#'..',
+#'-I',
+#'../..',
+#'-I',
+#'./include',
+#'-I',
+#'../include',
+#'-I',
+#'../../include',
+#'-I',
+#'./src',
+#'-I',
+#'../src',
+#'-I',
+#'../../src',
+# add additional include (for clang to find omp.h, even if it doesn't support it)
+'-I',
+'/home/patrick/.vim/ycm_include',
+'-I',
+'./',
+'-I',
+'./src',
+'-I',
+'./ext',
+'-I',
+'./ext/cxx-prettyprint',
+'-I',
+'./include',
+'-I',
+'..',
+'-I',
+'../..',
+'-I',
+'../include',
+'-I',
+'../src',
+'-I',
+'../../include',
+'-I',
+'../../src',
+'-I',
+'/usr/lib/openmpi/include',
+# as workaround for libclang to find includes, output of:
+# echo | clang -v -E -x c++ -
+#'-isystem',
+#'/usr/include/c++/4.8',
+#'-isystem',
+#'/usr/include/c++/4.8/backward',
+#'-isystem',
+#'/usr/include/x86_64-linux-gnu/c++/4.8',
+#'-isystem',
+#'/usr/local/include',
+#'-isystem',
+#'usr/lib/clang/3.4/include',
+#'-isystem',
+#'/usr/lib/gcc/x86_64-linux-gnu/4.8/include',
+#'-isystem',
+#'/usr/include/x86_64-linux-gnu',
+#'-isystem',
+#'/usr/include',
+]
+
+
+# Set this to the absolute path to the folder (NOT the file!) containing the
+# compile_commands.json file to use that instead of 'flags'. See here for
+# more details: http:https://clang.llvm.org/docs/JSONCompilationDatabase.html
+#
+# You can get CMake to generate this file for you by adding:
+# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
+# to your CMakeLists.txt file.
+#
+# Most projects will NOT need to set this to anything; you can just change the
+# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
+compilation_database_folder = ''
+
+if os.path.exists( compilation_database_folder ):
+ database = ycm_core.CompilationDatabase( compilation_database_folder )
+else:
+ database = None
+
+SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
+
+def DirectoryOfThisScript():
+ return os.path.dirname( os.path.abspath( __file__ ) )
+
+
+def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
+ if not working_directory:
+ return list( flags )
+ new_flags = []
+ make_next_absolute = False
+ path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
+ for flag in flags:
+ new_flag = flag
+
+ if make_next_absolute:
+ make_next_absolute = False
+ if not flag.startswith( '/' ):
+ new_flag = os.path.join( working_directory, flag )
+
+ for path_flag in path_flags:
+ if flag == path_flag:
+ make_next_absolute = True
+ break
+
+ if flag.startswith( path_flag ):
+ path = flag[ len( path_flag ): ]
+ new_flag = path_flag + os.path.join( working_directory, path )
+ break
+
+ if new_flag:
+ new_flags.append( new_flag )
+ return new_flags
+
+
+def IsHeaderFile( filename ):
+ extension = os.path.splitext( filename )[ 1 ]
+ return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
+
+
+def GetCompilationInfoForFile( filename ):
+ # The compilation_commands.json file generated by CMake does not have entries
+ # for header files. So we do our best by asking the db for flags for a
+ # corresponding source file, if any. If one exists, the flags for that file
+ # should be good enough.
+ if IsHeaderFile( filename ):
+ basename = os.path.splitext( filename )[ 0 ]
+ for extension in SOURCE_EXTENSIONS:
+ replacement_file = basename + extension
+ if os.path.exists( replacement_file ):
+ compilation_info = database.GetCompilationInfoForFile(
+ replacement_file )
+ if compilation_info.compiler_flags_:
+ return compilation_info
+ return None
+ return database.GetCompilationInfoForFile( filename )
+
+
+def FlagsForFile( filename, **kwargs ):
+ if database:
+ # Bear in mind that compilation_info.compiler_flags_ does NOT return a
+ # python list, but a "list-like" StringVec object
+ compilation_info = GetCompilationInfoForFile( filename )
+ if not compilation_info:
+ return None
+
+ final_flags = MakeRelativePathsInFlagsAbsolute(
+ compilation_info.compiler_flags_,
+ compilation_info.compiler_working_dir_ )
+
+ else:
+ relative_to = DirectoryOfThisScript()
+ final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
+
+ return {
+ 'flags': final_flags,
+ 'do_cache': True
+ }

include/mxx/comm.hpp

@@ -0,0 +1,108 @@
+/**
+ * @file comm.hpp
+ * @author Patrick Flick <[email protected]>
+ * @brief Implements a wrapper for MPI_Comm.
+ *
+ * Copyright (c) 2014 Georgia Institute of Technology. All Rights Reserved.
+ *
+ * TODO add Licence
+ */
+
+#ifndef MXX_COMM_HPP
+#define MXX_COMM_HPP
+
+#include <mpi.h>
+
+namespace mxx {
+
+class comm {
+public:
+ /// Default constructor defaults to COMM_WORLD
+ comm() : mpi_comm(MPI_COMM_WORLD) {
+ MPI_Comm_size(mpi_comm, &m_size);
+ MPI_Comm_rank(mpi_comm, &m_rank);
+ }
+
+ /// Taking an MPI_Comm object
+ comm(const MPI_Comm& c) {
+ MPI_Comm_dup(c, &mpi_comm);
+ MPI_Comm_size(mpi_comm, &m_size);
+ MPI_Comm_rank(mpi_comm, &m_rank);
+ }
+
+ /// Copy constructor
+ comm(const comm& o) : m_size(o.m_size), m_rank(o.m_rank) {
+ MPI_Comm_dup(o.mpi_comm, &mpi_comm);
+ }
+
+ /// Move constructor
+ comm(comm&& o) : mpi_comm(o.mpi_comm), m_size(o.m_size), m_rank(o.m_rank) {
+ o.mpi_comm = MPI_COMM_NULL;
+ o.m_size = o.m_rank = 0;
+ }
+
+ /// Copy assignment
+ comm& operator=(const comm& o) {
+ free();
+ MPI_Comm_dup(o.mpi_comm, &mpi_comm);
+ m_size = o.m_size;
+ m_rank = o.m_rank;
+ return *this;
+ }
+
+ /// Move assignment
+ comm& operator=(comm&& o) {
+ free();
+ mpi_comm = o.mpi_comm;
+ m_size = o.m_size;
+ m_rank = o.m_rank;
+ o.mpi_comm = MPI_COMM_NULL;
+ o.m_size = o.m_rank = 0;
+ return *this;
+ }
+
+ /// Assigned a MPI_Comm object
+ comm& operator=(const MPI_Comm& c) {
+ free();
+ MPI_Comm_dup(c, &mpi_comm);
+ MPI_Comm_size(mpi_comm, &m_size);
+ MPI_Comm_rank(mpi_comm, &m_rank);
+ return *this;
+ }
+
+ /// Implicit conversion to MPI_Comm
+ operator MPI_Comm() const {
+ return mpi_comm;
+ }
+
+ /// Destructor (frees the MPI_Comm object)
+ virtual ~comm() {
+ free();
+ }
+
+ /// Returns the size of the communicator
+ int size() const {
+ return m_size;
+ }
+
+ /// Returns the rank of this process in the communicator
+ int rank() const {
+ return m_rank;
+ }
+
+private:
+ void free() {
+ if (mpi_comm != MPI_COMM_WORLD && mpi_comm != MPI_COMM_NULL)
+ MPI_Comm_free(&mpi_comm);
+ }
+
+private:
+ MPI_Comm mpi_comm;
+ int m_size;
+ int m_rank;
+};
+
+} // namespace mxx
+
+
+#endif // MXX_COMM_HPP