b1bba2e201
When I initially released this project, I released it under my own copyright. I have since then worked on it in my 20% time at Google (and want to continue doing this) and my life becomes much simpler if the copyright is Google's. From the perspective of how this project is run and managed, **NOTHING** changes. YCM is not a Google product, merely a project run by someone who just happens to work for Google. Please note that the license of the project is **NOT** changing. People sending in future pull requests will have to sign the Google [CLA](https://developers.google.com/open-source/cla/individual) (you can sign online at the bottom of that page) before those pull requests could be merged in. People who sent in pull requests that were merged in the past will get an email from me asking them to sign the CLA as well.
141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
// Copyright (C) 2013 Google Inc.
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//
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// This file is part of YouCompleteMe.
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//
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// YouCompleteMe is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// YouCompleteMe is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with YouCompleteMe. If not, see <http://www.gnu.org/licenses/>.
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#include "TranslationUnitStore.h"
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#include "TranslationUnit.h"
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#include "Utils.h"
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#include "exceptions.h"
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#include <boost/thread/locks.hpp>
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#include <boost/make_shared.hpp>
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#include <boost/functional/hash.hpp>
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using boost::lock_guard;
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using boost::shared_ptr;
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using boost::make_shared;
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using boost::mutex;
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namespace YouCompleteMe {
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namespace {
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std::size_t HashForFlags( const std::vector< std::string > &flags ) {
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return boost::hash< std::vector< std::string > >()( flags );
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}
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} // unnamed namespace
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TranslationUnitStore::TranslationUnitStore( CXIndex clang_index )
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: clang_index_( clang_index ) {
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}
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TranslationUnitStore::~TranslationUnitStore() {
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RemoveAll();
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}
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shared_ptr< TranslationUnit > TranslationUnitStore::GetOrCreate(
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const std::string &filename,
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const std::vector< UnsavedFile > &unsaved_files,
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const std::vector< std::string > &flags ) {
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bool dont_care;
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return GetOrCreate( filename, unsaved_files, flags, dont_care );
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}
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shared_ptr< TranslationUnit > TranslationUnitStore::GetOrCreate(
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const std::string &filename,
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const std::vector< UnsavedFile > &unsaved_files,
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const std::vector< std::string > &flags,
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bool &translation_unit_created ) {
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translation_unit_created = false;
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{
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lock_guard< mutex > lock( filename_to_translation_unit_and_flags_mutex_ );
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shared_ptr< TranslationUnit > current_unit = GetNoLock( filename );
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if ( current_unit &&
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HashForFlags( flags ) == filename_to_flags_hash_[ filename ] ) {
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return current_unit;
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}
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// We create and store an invalid, sentinel TU so that other threads don't
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// try to create a TU for the same file while we are trying to create this
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// TU object. When we are done creating the TU, we will overwrite this value
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// with the valid object.
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filename_to_translation_unit_[ filename ] =
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make_shared< TranslationUnit >();
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// We need to store the flags for the sentinel TU so that other threads end
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// up returning the sentinel TU while the real one is being created.
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filename_to_flags_hash_[ filename ] = HashForFlags( flags );
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}
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boost::shared_ptr< TranslationUnit > unit;
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try {
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unit = boost::make_shared< TranslationUnit >( filename,
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unsaved_files,
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flags,
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clang_index_ );
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} catch ( ClangParseError & ) {
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Remove( filename );
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return unit;
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}
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{
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lock_guard< mutex > lock( filename_to_translation_unit_and_flags_mutex_ );
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filename_to_translation_unit_[ filename ] = unit;
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// Flags have already been stored.
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}
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translation_unit_created = true;
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return unit;
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}
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shared_ptr< TranslationUnit > TranslationUnitStore::Get(
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const std::string &filename ) {
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lock_guard< mutex > lock( filename_to_translation_unit_and_flags_mutex_ );
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return GetNoLock( filename );
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}
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bool TranslationUnitStore::Remove( const std::string &filename ) {
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lock_guard< mutex > lock( filename_to_translation_unit_and_flags_mutex_ );
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Erase( filename_to_flags_hash_, filename );
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return Erase( filename_to_translation_unit_, filename );
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}
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void TranslationUnitStore::RemoveAll() {
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lock_guard< mutex > lock( filename_to_translation_unit_and_flags_mutex_ );
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filename_to_translation_unit_.clear();
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filename_to_flags_hash_.clear();
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}
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shared_ptr< TranslationUnit > TranslationUnitStore::GetNoLock(
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const std::string &filename ) {
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return FindWithDefault( filename_to_translation_unit_,
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filename,
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shared_ptr< TranslationUnit >() );
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}
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} // namespace YouCompleteMe
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