llvm/clang-tools-extra/clangd/index/Background.h

//===--- Background.h - Build an index in a background thread ----*- C++-*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_INDEX_BACKGROUND_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_INDEX_BACKGROUND_H

#include "GlobalCompilationDatabase.h"
#include "SourceCode.h"
#include "index/BackgroundRebuild.h"
#include "index/FileIndex.h"
#include "index/Index.h"
#include "index/Serialization.h"
#include "support/Context.h"
#include "support/MemoryTree.h"
#include "support/Path.h"
#include "support/Threading.h"
#include "support/ThreadsafeFS.h"
#include "clang/Tooling/CompilationDatabase.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/Threading.h"
#include <atomic>
#include <condition_variable>
#include <deque>
#include <mutex>
#include <optional>
#include <queue>
#include <string>
#include <thread>
#include <vector>

namespace clang {
namespace clangd {

// Handles storage and retrieval of index shards. Both store and load
// operations can be called from multiple-threads concurrently.
class BackgroundIndexStorage { … };

// A priority queue of tasks which can be run on (external) worker threads.
class BackgroundQueue { … };

// Builds an in-memory index by by running the static indexer action over
// all commands in a compilation database. Indexing happens in the background.
// FIXME: it should watch for changes to files on disk.
class BackgroundIndex : public SwapIndex { … };

} // namespace clangd
} // namespace clang

#endif